WO2006021033A2 - A system for disseminating data - Google Patents

A system for disseminating data Download PDF

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Publication number
WO2006021033A2
WO2006021033A2 PCT/AU2005/001266 AU2005001266W WO2006021033A2 WO 2006021033 A2 WO2006021033 A2 WO 2006021033A2 AU 2005001266 W AU2005001266 W AU 2005001266W WO 2006021033 A2 WO2006021033 A2 WO 2006021033A2
Authority
WO
WIPO (PCT)
Prior art keywords
data
signal
identifier
user
unit
Prior art date
Application number
PCT/AU2005/001266
Other languages
French (fr)
Other versions
WO2006021033A8 (en
WO2006021033A3 (en
Inventor
Warren Richard Lesnie
Anthony Blackwood
Original Assignee
Audio-Read Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004904792A external-priority patent/AU2004904792A0/en
Application filed by Audio-Read Pty Ltd filed Critical Audio-Read Pty Ltd
Publication of WO2006021033A2 publication Critical patent/WO2006021033A2/en
Publication of WO2006021033A3 publication Critical patent/WO2006021033A3/en
Publication of WO2006021033A8 publication Critical patent/WO2006021033A8/en

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001Teaching or communicating with blind persons
    • G09B21/006Teaching or communicating with blind persons using audible presentation of the information
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866Management of end-user data
    • H04N21/25875Management of end-user data involving end-user authentication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/426Internal components of the client ; Characteristics thereof
    • H04N21/42684Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/472End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65Transmission of management data between client and server
    • H04N21/658Transmission by the client directed to the server
    • H04N21/6581Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/8106Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17318Direct or substantially direct transmission and handling of requests

Definitions

  • TITLE A SYSTEM FOR DISSEMINATING DATA
  • the present invention relates to a system for disseminating data.
  • the invention has been developed primarily for delivering audible media to visually impaired persons, and will be described hereinafter with reference to that application.
  • the invention is not limited to that particular field of use and is also suitable for providing visual and other information to visually impaired persons and able-bodied persons alike.
  • BACKGROUND There have been a variety of attempts to provide visually impaired persons with access to a larger portion of the great wealth of written material that is available. Historically the proportion of the population requiring such assistance has been considered minimal and this has hindered investment in possible solutions, certainly from the private sector.
  • a known system for assisting visually impaired persons in Australia to access and enjoy the benefits of written material includes a central library that retains a selection of voice recorded four track magnetic tapes.
  • the content contained on the tapes is a sound recording of a person or persons reading a predetermined published book.
  • the cost of these recordings is considerable and limits the range of book titles that are ultimately available for use with the system.
  • the available titles are of books that were published some time previously.
  • a user of such a system must be supplied with a four track tape player.
  • These players are not readily available to the consumer market, are specialised devices and are typically expensive. Manufacturers of such devices include Plextor, Visuaide, LP Pro and Sigtuna. Use is made of four track players to act as a deterrent to those less scrupulous members of the community who would otherwise copy the tapes for sale or otherwise. Given the cost of actually recording the tapes, there is considerable financial incentive for piracy.
  • the user contacts the library via a residential telephone and interacts with an operator who has been assigned to the role. If the user does not have a suitable 4-track player, arrangements are made to have one sent to the residence through the postal system or other similar arrangement.
  • the cost of the postage is carried by the public sector and not passed directly onto the user.
  • the user also interacts with the operator via telephone to select one or more tapes from the available range.
  • the selected tape or tapes physically located by the operator and placed in the postal system to be subsequently delivered to the residence.
  • the postage costs are also met by the public sector in the example of Australia.
  • the existing system is disadvantageous for many reasons, including:
  • a system for disseminating data including: a data gateway for: selectively accessing the data from a storage device; defining a signal identifier; packaging the data to provide a data signal indicative of the data and the signal identifier; and outputting the data signal; and a playback unit that is responsive to the signal identifier for selectively extracting the data from the data signal to provide an output signal that is derived from the data.
  • the signal identifier is indicative of one or more delivery rules. More preferably the playback unit is responsive to the delivery rules for extracting the data.
  • the data and data signal are digital and the output signal is analogue. More preferably, the data and data signal are not digitally obtainable from the playback unit.
  • packaging the data includes compression of the data, and extracting the data includes decompression of the data from the data signal. More preferably, - A - packaging the data includes encryption of the data, and extracting the data includes decryption of the data from the data signal.
  • the output signal is an audible representation of the data.
  • the data is indicative of text
  • the playback unit includes a text-to-speech converter for generating the audible representation from the text.
  • the playback unit includes: data indicative of a unit identifier; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the data is to be extracted from the data signal.
  • the playback unit validates the signal identifier to determine a tier of access to the output signal.
  • the access tier is selected from one or more of the following: time-limited audible representations; time-limited visual representations; time-limited tactile representations; use-limited audible representations; use-limited visual representations; use-limited tactile representations; open audible representations; open visual representations; and open tactile representations.
  • the data gateway includes an interface for receiving a request from a user having an associated playback unit, and the gateway is responsive to the request for outputting the data signal for extraction by the associated playback unit. More preferably the request is indicative of the data. Still preferably the gateway is controlled by an administrator and is selectively responsive to the request for accessing and packaging the data to provide the data signal.
  • the user has an account.
  • the account is debited in response to the request.
  • the gateway is responsive to the account for defining the signal identifier.
  • the system includes a protocol for identifying a visually impaired candidate to whom the playback unit is to be assigned.
  • a playback unit for selectively providing an output signal derived from data, the unit including: a unit identifier; an input for receiving a data signal indicative of: a signal identifier; and the data; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the output signal is to be provided.
  • a system for disseminating data including: a storage device for storing the data; a data gateway for selectively accessing and packaging the data to provide a data signal having a signal identifier; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a wireless receiver of a user for receiving the wireless signal and extracting the identifier; a playback unit being responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
  • the packaging of the data to form the data signal includes compressing the data. More preferably, the packaging of the data to form the data signal includes encrypting the data. Even more preferably, the extracting of the data by the playback unit includes the decompression and/or decryption of the data from the wireless signal.
  • the output signal is such as to allow an audible representation of the data to the user. More preferably, the output signal is such as to allow a visual representation of the data to the user, hi some embodiments, output signal is such as to allow both visual and audible representations of the data to the user.
  • the data includes text and the playback unit includes a text-to- voice converter for providing the output signal.
  • the playback unit includes a unique identifier which is compared with the signal identifier to select whether or not the data is to be extracted from the data signal. More preferably, the playback unit compares the signal identifier with the unique identifier to determine a type of access to the output signal that is provided to the user. Even more preferably, the type of access to the output signal provided to the user is selected from one or more of the following types: time-limited audible representations; time-limited visual representations; time-limited tactile representations; open audible representations; open visual representations; and open tactile representations.
  • the system includes an ordering facility and the user interacts with the facility to place an order of the data.
  • the gateway is controlled by an administrator and is selectively responsive to the order for accessing and packaging the data to provide the data signal.
  • the facility includes an account for the user that is debited in response to the order and credited in response to a payment from the user to the administrator.
  • the gateway is responsive to the account for determining the signal identifier. That is, if the account is acceptable to the administrator - that is, the user has sufficient funds or credit within the account -the identifier is determined such that the playback unit is able to provide the user with predetermined access to the data. Conversely, if the user has insufficient funds or credit within the account, the identifier is determined such that the playback unit is unable to provide the user with predetermined access to the data. In this way, the administrator is provided with complete discretion as to whether or not the user able to access the data.
  • the playback unit is securely contained within a housing such that the data is not available to be accessed by the user. More preferably, the unit includes memory contained within the housing for storing the unique identifier. Even more preferably, the housing, in use, is in a locked configuration and movement of the housing from the locked configuration erases the unique identifier from the memory.
  • a system for disseminating data including: a storage device for storing a plurality of data groups; a data gateway for selectively accessing and packaging the data groups to provide respective data signals, each having a signal identifier; a wireless transmitter that is responsive to the data signals for transmitting respective wireless signals; a plurality of wireless receivers of a corresponding number of users for receiving the wireless signals and extracting the identifiers; a playback unit for each receiver, each unit being responsive to only predetermined identifiers for selectively extracting the respective data groups from the relevant data signals to provide the respective users with predetermined access to selected ones of the data groups.
  • each user is a separate party.
  • a user includes more than one person.
  • the packaging of the data groups to form the respective data signals includes compressing the data groups. More preferably, the packaging of the data groups to form the respective data signals includes encrypting the data. Even more preferably, the extracting of the data groups by the playback units includes the decompression and/or decryption of the data groups from the respective wireless signals.
  • the playback unit audibly represents the extracted data groups to the user with predetermined access. More preferably, the playback unit visually represents the data groups to the users with predetermined access. In some embodiments, the playback unit both visually and audibly represents the data to the user.
  • the data groups include text and the playback units include respective text-to-voice converters for allowing the data groups to be audibly represented to the user.
  • each playback unit includes a unique identifier which is compared with the signal identifier to determine whether or not the data group is to be extracted from the data signal. More preferably, each playback unit compares the signal identifier with the unique identifier to determine a type of access to each data group that is provided to the user. Even more preferably, the type of access provided to the user a respective data group is selected from one or more of the following types: time- limited audible access; time-limited visual access; time-limited tactile access; open audible access; open visual access; and open tactile access.
  • the system includes an ordering facility and the user interacts with the facility to place an order of the desired data group.
  • the gateway is controlled by an administrator and is selectively responsive to the order for accessing and packaging the data groups to provide the data signal.
  • the facility includes an account for each user, where the accounts are debited in response to respective orders from the users and credited in response to payments from the respective users to the administrator. More preferably, the gateway is responsive to the accounts for determining the signal identifier.
  • the identifier is determined such that all the playback units are able to provide the user with predetermined access to the relevant data group. Conversely, if one user has insufficient funds or credit within the respective account, the identifier is determined such that the playback unit associated with that user is unable to provide the user with predetermined access to the relevant data group, hi this way, the administrator is provided with complete discretion as to whether or not each user able to access the data groups.
  • a playback unit for a user including: a wireless receiver for receiving a wireless signal containing a data signal and a signal identifier, wherein the receiver extracts the identifier from the wireless signal; a controller being responsive to the signal identifier and a unique identifier associated with the unit to determine whether the user has been granted access to the data signal; and an output port that is responsive to the controller if the user has been granted access to the data signal for providing an output signal that is derived from the data signal.
  • the data signal is compressed and the controller includes the step of decompressing the data signal. More preferably, the data signal is compressed and the controller includes the step of decompressing the data signal.
  • the playback unit includes memory for selectively storing the data signal. More preferably, the memory is non- volatile and stores the unique identifier.
  • the receiver, the controller, the memory and the output port are contained within a housing. More preferably, the housing is securely sealed. Even more preferably, the controller is responsive to a break of the seal to erase the unique identifier from the memory.
  • the output signal is provided to a reproduction device that provides an interface for the user.
  • the reproduction device is an audio device such as an audio amplifier and associated speakers.
  • the reproduction device is a visual device such as a video monitor.
  • the reproduction device an audiovisual device such as a television monitor.
  • the output signal while being derived from the data signal, is configured specifically to drive the reproduction device.
  • the output port includes data lines and at least one control line. More preferably, the data lines are read only. Even more preferably, the control lines are read and write capable for allowing the user to determine which of the data is used to provide the output signal.
  • a playback unit for a user including: a housing that is locked into a closed configuration; a memory device disposed within the housing and which stores a unique identifier for the unit; a wireless receiver disposed within the housing for receiving a wireless signal that contains a data signal, the receiver being responsive to the wireless signal and the unique identifier for determining whether the user has been granted access to the data signal; an output port mounted to the housing and which is externally accessible from the housing, wherein the port is responsive to the receiver for selectively providing an output signal that is derived from the data signal; and a security device that is responsive to movement of the housing from the closed configuration for clearing the memory device of the unique identifier.
  • the housing includes two complementary plastics members that are opposed and interlockingly engaged in the closed configuration.
  • the security device includes two stations that are engaged with respective members and a link that spans between the stations, whereby movement of the members from the closed configuration severs the link and initiates the clearing of the memory device.
  • one of the stations defines a first electrical contact and the other of the stations and the link collectively define a second electrical contact. More preferably, in the closed configuration, the first and second contacts are engaged with each other. Even more preferably, the contacts move out of engagement with each other as the housing is moved from the closed configuration.
  • a system for disseminating data including: a storage device for storing the data; a data gateway for selectively accessing and packaging the data to provide a data signal having a signal identifier; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a plurality of wireless receivers for a corresponding number of users, each receiver having a unique identifier and being adapted for receiving the wireless signal and extracting the signal identifier; a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal identifier for permitting or preventing the respective units from extracting the data from the data signal.
  • the receivers receive the wireless signal substantially simultaneously.
  • the gateway is controlled by an administrator and the signal identifier is determined such that a selected one or more of the units are able to extract the data from the data signal.
  • the data if extracted, is converted into an output signal for driving a display device. That is, the output signal, while being derived from the data, is not the data itself and is not open to be easily reproduced by the user. That is, the output signal is in a read only format.
  • the read only format is viewable by the user. In other embodiments, the read only format is audible to the user. More preferably, the read only format is both viewable and audible to the user.
  • a system for disseminating data including: a storage device for storing the data; a data gateway for selectively accessing and compressing the data to provide a data signal, the data signal including a signal handshake; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a plurality of wireless receivers for receiving the wireless signal and for extracting the signal handshake, wherein each receiver is associated with a corresponding user and has a unique handshake identifier that, if compatible with the signal handshake, allows the receiver to extract the compressed data from the data signal; and a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal handshake for selectively allowing progressive decompression of the data into an output signal.
  • the decompression of the data occurs progressively in real time.
  • the output signal drives an audio amplifier
  • the data is progressively decompressed to allow the user to listen serially to the audible sequence resulting from the output signal.
  • a ninth aspect of the invention there is provided a method for disseminating data, the method including: storing the data in a storage device; selectively accessing and packaging the data to provide a data signal having a signal identifier; being responsive to the data signal for transmitting a wireless signal; receiving the wireless signal with a wireless receiver of a user, the receiver extracting the identifier; being responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
  • a method for disseminating data including: storing a plurality of data groups in a storage device; selectively accessing and packaging the data groups to provide respective data signals, each data signal having a signal identifier; being responsive to the data signals for transmitting respective wireless signals; receiving the wireless signals and extracting the identifiers at a plurality of wireless receivers of a corresponding number of users; providing a playback unit for each receiver, each unit being responsive to only predetermined identifiers for selectively extracting the respective data groups from the relevant data signals to provide the respective users with predetermined access to selected ones of the data groups.
  • a method of providing a user with an output signal from a playback unit including: using the unit to receive a wireless signal containing a data signal and a signal identifier, wherein the unit extracts the identifier from the wireless signal; providing a controller that is responsive to the signal identifier and a unique identifier associated with the unit to determine whether the user has been granted access to the data signal; and providing an output port that is responsive to the controller if the user has been granted access to the data signal for providing the output signal, wherein the output signal is derived from the data signal.
  • a method of securing a playback unit that has been allocated to a user including: providing a housing that is locked into a closed configuration; disposing a memory device within the housing for storing a unique identifier for the unit; disposing a wireless receiver within the housing for receiving a wireless signal that contains a data signal, the receiver being responsive to the wireless signal and the unique identifier for determining whether the user has been granted access to the data signal; mounting an output port to the housing such that it is externally accessible from the housing, wherein the port is responsive to the receiver for selectively providing an output signal that is derived from the data signal; and providing a security device that is responsive to movement of the housing from the closed configuration for clearing the memory device of the unique identifier.
  • a method for disseminating data including: storing the data in a storage device; selectively accessing and packaging the data to provide a data signal having a signal identifier; being responsive to the data signal for transmitting a wireless signal; providing a plurality of wireless receivers for a corresponding number of users, each receiver having a unique identifier and being adapted for receiving the wireless signal and extracting the signal identifier; providing a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal identifier for permitting or preventing the respective units from extracting the data from the data signal.
  • a method for disseminating data including: storing the data in a storage device; selectively accessing and compressing the data to provide a data signal, the data signal including a signal handshake; being responsive to the data signal for transmitting a wireless signal; providing a plurality of wireless receivers for receiving the wireless signal and for extracting the signal handshake, wherein each receiver is associated with a corresponding user and has a unique handshake identifier that, if compatible with the signal handshake, allows the receiver to extract the compressed data from the data signal; and providing a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal handshake for selectively allowing progressive decompression of the data into an output signal.
  • Figure 1 is a schematic representation of a system for disseminating data in accordance with an embodiment of the present invention
  • Figure 2 is a schematic representation of an exemplary implementation of the system of Figure 1;
  • Figure 3 is a schematic representation of a further exemplary implementation of the system of Figure 1;
  • Figure 4 is a schematic representation of another exemplary implementation of the system of Figure 1;
  • Figure 5 is schematic front view of a playback unit
  • Figure 6 is a schematic side view of the exemplary playback unit of Figure 5;
  • Figure 7 illustrates an exemplary method for processing a request;
  • Figure 8 illustrates an exemplary method for defining a signal identifier;
  • Figure 9 is a schematic representation of an implementation similar to that of Figure 4.
  • System 1 for disseminating media data 2.
  • System 1 includes a data gateway 3 for selectively accessing data 2 from a media database 4.
  • gateway 3 defines a signal identifier 5and packages data 2 to provide a data signal 6 indicative of data 2 and identifier 5.
  • Gateway 3 then outputs this signal to a playback unit 10.
  • Unit 10 is responsive to identifier 5 for selectively extracting data 2 from signal 6 to provide an output signal 11 that is derived from the data 2.
  • signal 11 is an audible representation of that audio file.
  • system 1 is configured for the primary purpose of providing media to a visually impaired user 15, who has access to unit 10.
  • system 1 configured for other purposes. For example: disseminating data in a broader context. For the present purposes, a group of visually impaired candidates are selected.
  • This group includes user 15. These include both persons born with visual impairment, as well as persons who have developed or incurred such a disability at some point - such as sufferers of macular degeneration. Techniques and protocols for identifying candidates vary between embodiments. The underlying rationale is typically that public policy subsidises the costs of access to various media to assist the visually impaired. System 1 allows convenient dissemination of such media — which is electronically stored in database 4 - to identified candidates. Importantly, accessing media through system 1 requires very little intervention from a candidate, which is particularly advantageous in the case of the visually impaired. A candidate simply requests the desired media, which is delivered to that candidate's unit 10. There is no need for an intermediate step whereby media is delivered to a secondary location for subsequent pro-active download by the candidate.
  • System 1 also restricts persons who are not candidates from accessing media that should not be freely available to them. As will be described below, in some embodiments such persons are provided access to the media, however in accordance with protection standards and typically on a user-pays basis.
  • a unit 10 having a unique identifier, as described in greater detail further below.
  • This identifier is used to for the purposes of delivery location, media protection, and account maintenance. This effectively removes the need for two-way communication between gateway 2 and unit 10, which reduces per-unit costs and simplifies communication infrastructure required for implementation.
  • system 1 is shown with a single user 15, this is for simplicity of illustration, hi practice, system 1 includes a plurality of geographically spaced apart users with respective units 10.
  • Database 4 includes many separate sets of data 2 that are representative of different digital contents. For example, some of the sets are representative of the text of particular written works of respective authors. Other sets are representative of text from a periodic or regular publication such as a magazine, a newspaper or a comic. Other sets include, but are not limited to, audio books, short stories, old time radio shows, serials, community information, and journals. Among these are written works that have been translated to Braille. Both DAISY and Non-DAIS Y compliant data is held.
  • a particular class of data 2 that is well suited to the present embodiment is a digitally annotated text file. This is a text file adapted to allow convenient searching across a number of searching levels, as described in greater detail further below.
  • signal 11 is an audible representation of data 2.
  • unit 10 includes a text-to-speech converter for generating an appropriate audible representation from the text. Such converters will be known to those skilled in the art.
  • Output signal 11 in this embodiment, is suitable as in input for an audio amplifier. That is, the user is able to listen to a sound sequence provided through a headset or speakers. In embodiments making use of visually displayable data, signal 11 is viewable through a television or other screen. In some such embodiments, unit 10 is integrated with a set-top box or cable signal decoder.
  • All the sets of data referred to above include "content”. That is, they include material that is authored, in some way, and which is thought to be desired by the users of system 1. This content is, in many cases, proprietary. Accordingly, the author and/or owner of the content will not wish for that content to be copied or used in an unauthorised way. As will be described below, the system of the present embodiment addresses this issue effectively.
  • Gateway 2 includes an interface 16 for receiving a request 17 from user 15.
  • this request is typically provided by telephone.
  • a variety of other communication means are also available, such as SMS, email, facsimile, and inter-personal communication.
  • user 15 provides request 17 directly to interface 16.
  • the request is provided to an operator who, in due course, enters the request into interface 16.
  • interface 16 includes a human operator.
  • this request is placed with a human operator, an automated telephone answering system, or an Internet interface.
  • the automated telephone answering system is voice activated, while in other cases it is activated by the user keying numerals via the telephone.
  • request 17 is indicative of data 2.
  • request 17 is indicative of a particular subscription service - such as a service for a newspaper that each day provides a digitally annotated text file of the newspaper for that day.
  • gateway 2 Upon receipt request 17, gateway 2 is responsive to the request for outputting data signal 6 for extraction by the associated playback unit 10. As such request 17 must identify unit 10. To this end, unit 10 includes data indicative of a unit identifier 20. Identifier 20 is communicated by user 15 in request 17 to facilitate identification of unit 10. Identifier 20 is also used for user account rights management and for enforcing delivery rules, as discussed below.
  • Figure 7 illustrates an exemplary method for handling request 17. This method is exemplary only, and should not be considered as limiting in any way. Moreover, those skilled in the art will recognise a variety of possible additions, modifications, and permutations that are applied to the example.
  • identifier 20 for the unit 10 of user 15, and media data that is being requested.
  • interface 16 includes a keypad activated telephone answering system
  • identifier 20 and a numeric string identifying data 2 are manually entered by user 15 via telephone keypad.
  • voice recognition is used.
  • user 15 has a user account.
  • This user account is maintained in a database accessible to interface 16, and includes various fields of information relating to user 15.
  • this information includes user account privileges, and user account credit information.
  • User account privileges are used to restrict or grant the user access to particular data 2.
  • some data 2 is only accessible by certain users. Alternately, some data 2 is accessible to some users at no cost, whilst other users must pay for that data.
  • This is relevant in situations where a subsidy is arranged to provide visually impaired persons free access to particular media, typically due to governmental policy. In such a case, a visually impaired user is granted free access to particular types of data 2, whilst a visually capable user is required to pay for the right to access that data.
  • the visually impaired user is provided with a unit 10 having an identifier 20 associated with a higher level of user account privilege to facilitate this.
  • interface 16 determines the user account and requested media data, it is determined whether user 15 has the necessary privilege to access that data. If not, the process is terminated and the user informed. Otherwise, it is determined whether user 15 has sufficient privilege to access the data for free. If this is the case, the data is extracted, an identifier 5 is defined, and a data signal is sent to unit 10. Otherwise a credit check is performed and, assuming sufficient credit exists, the user account is debited for a cost associated with the requested data. Following this, the data is extracted, an identifier 5 is defined, and a data signal is sent to unit 10. If there is insufficient credit the process is terminated and the user is informed. In some embodiments users are allowed to have less than zero credit for predetermined time periods.
  • Informing the user is carried out optionally by several techniques, primarily dependant on the nature of interface 16. For example, one technique involves informing user 15 of difficulties by telephone at the time of receiving the request. In another example, a message is sent to unit 10 informing user 15 of reasons for which the process was terminated. Typically, this message is outputted as signal 11.
  • the scheduling of the dissemination through system 1 is dynamically reconfigurable - through use of gateway 2- in response to changing demands for the different data.
  • Figures 2 to 4 schematically illustrate various models for providing such a service to visually impaired candidates such as user 15.
  • FIG. 2 illustrates an example wherein gateway 2 is maintained within a terminal 21 located in a public library.
  • User 15 physically visits that library, and interacts with the terminal to gain access to media.
  • a human operator controls terminal 21, and communicates verbally with user 15 to provide the necessary assistance.
  • Customer service levels vary between cases, however typically the user and controller are at liberty to discuss media that is available and that may be of interest.
  • User 15 selects one or more media items, and the controller uses terminal 21 to download data 2 indicative of that media to the unit 10 of user 15.
  • unit 10 is a portable unit that user 15 carries to the library, and signal 6 is downloaded via local transfer means 22. These include physical cable connections with the terminal - such as USB cable - and wireless connections - such as Bluetooth or infrared.
  • unit 10 is not portable, and left at the residence of user 15. In such cases signal 6 is transmitted from terminal 2 to unit 10 via wide area communications (not shown), such as the internet, telephone, GPRS 5 satellite, and so on.
  • unit 10 includes both portable and non-portable components.
  • unit 10 includes a removable flash drive that is taken to the library.
  • unit 10 is a non-portable machine located within the library, and user 15 experiences media through that machine.
  • user 15 is supplied with an identification code for accessing such a machine.
  • FIG 3 illustrates an at-home lending model. This is similar to the example of Figure 2, however gateway 2 is maintained on a portable terminal, such as a laptop computer 23.
  • a service provider takes this laptop to the residency of user 15, and this residency effectively functionally imitates the library of the previous example. That is, user 15 personally deals with the service provider, and is provided with media upon request.
  • database 4 is not entirely contained on the internal storage of laptop 23, and some data 2 is accessed from a remote location - such as servers located on participating libraries or other facilities worldwide.
  • the laptop has a wireless Internet connection, and downloads data 2 from a remote server over the Internet. This data is then packaged into data signal 6 using the laptop, which is transmitted to unit 10.
  • FIG. 4 illustrates a typical example that makes use of a remote server 24 to maintain gateway 2, and user 15 interacts with this server via wide area communication means 25 - such as telephone. Examples of this implementation have been provided above.
  • data gateway 2 includes a wireless transmitter for outputting the data signal in a wireless communication, and unit 10 a wireless receiver for receiving the wireless communication. More specifically, gateway 2 is provided in the form of a computer network 123, which selectively accesses and packages the data to provide a data signal having a signal identifier.
  • a wireless transmitter 124 is responsive to the data signal for transmitting a wireless signal to a satellite 125.
  • a wireless receiver 126 located at a user's residence 127 receives the wireless signal via satellite 125 and extracts the identifier.
  • Unit 10 is responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
  • network 123 accesses the required data or data 2 from database 4 and compresses and encrypts it into a data file. This is passed to the transmitter 124 where it is combined with a signal identifier and thereafter transmitted wirelessly to satellite 125.
  • the signal identifier includes a coded string that is indicative of which of the users are permitted to playback the data 2 contained within the data file.
  • the users are identified by way of a unique identifier that is associated with unit 10.
  • the satellite retransmits the signal such that it is received by all the receivers 126 in system 1 that are operative at that time. That is, a single transmission of the data 2 is sufficient to ensure dissemination to all active users.
  • Receivers 126 extract the signal identifier and the data file from the wireless signal and pass these onto unit 10.
  • the unit includes a control circuit (not shown) for reading the signal identifier and a memory circuit (not shown) that stores the unique identifier.
  • the control circuit compares the two identifiers and, if compatible, allows further processing of the data file. Otherwise, no further processing of that file is permitted.
  • the data file is not even extracted from the wireless signal unless the handshake between the signal identifier and the unique identifier has occurred. Moreover, in other embodiments, the comparison of the identifiers occurs in the receiver.
  • data 2 is compressed and encrypted.
  • the compression is intended to reduce communication requirements by reducing the amount of digital information. Indeed, the compression of the data file allows a short wireless transmission to provide many hours of playback. For example, a wireless transmission lasting one minute would be sufficient to transmit enough data for many hours or audio playback to user 15.
  • the encryption is intended to prevent unauthorised users from accessing data 2.
  • unit 10 engages in decompression and decryption of signal 6 prior to outputting signal 11.
  • unit 10 is enabled to only perform this decompression and decryption when certain predetermined conditions are met. This is determined by reference to identifiers 5 and 20. More specifically, unit 10 includes a processor 30 that is responsive to the identifier 20 and unit identifier 5 for validating identifier 20. From this, processor 30 to selects whether or not data 2 is to be extracted from the data signal 6. This validation is commonly referred to as a handshake.
  • unit 10 determines that it is permitted to extract signal 6, it typically awaits commands from the user before doing so. hi this embodiment, unit 10 is able only to playback a representation of the signal 6. The unit cannot download the file itself nor transmit the file to another medium. Accordingly, when instructed to commence playback, unit 10 decrypts and decompresses a portion of the signal. That is, the data file is progressively converted to a format for providing the playback, hi some cases, on the other hand, the whole data file is converted to the playback format prior to any playback occurring. It will be therefore appreciated that gateway 2 defines identifier 5 by reference to identifier 20 such that extraction is allowed by the relevant unit 10.
  • Figure 8 illustrates an exemplary method for defining identifier 5.
  • Gateway 2 is responsive to two major sources of information: identifier 5, and data indicative of delivery rules. In some embodiments, however, delivery rules are not used. Delivery rules are, in this case, used to selectively limit the usage of data 2 in unit 10, and are defined in terms of access tiers. There are three major categories of access tier, as set out below. Time-limited. This provides a window of time during which data 2 is extractable. For example, data 2 is extractable for a predetermined period of time, such as one week. During that week, data signal 6 is extractable in unit 10 on a substantially unlimited number of occasions. Once that week ends, identifier 5 is no longer validated in a manner to allow extraction of data signal 6. Use limited. In this case, signal 6 is only extractable on a single or limited number of occasions.
  • gateway 2 transmits a signal indicative of a command to automatically delete one or more signals stored in the internal memory of unit 11. For example, a previous issue of an e-newsletter is automatically deleted upon receipt of a newer issue.
  • unit 10 is contained within a secure housing such that the data is not available to be accessed by the user except as delivered in the playback format.
  • the memory is contained within the housing and is responsive tampering with the housing for erasing the unique identifier. That is, should a less scrupulous person attempt to gain access to the data file, as opposed to the output signal, unit 10 will be disabled. This provides a significant barrier to copying of the data 2 provided through system 1.
  • the housing includes an electromechanical switch that is connected between two portions of the housing, hi the event of relative movement between those portions the switch toggles to actuate the controller to erase the unique identifier from the memory.
  • FIG. 5 An exemplary unit 10 is illustrated in Figures 5 and 6, this being a handheld device for use by the visually impaired. As with other examples provided herein, it should not be regarded as limiting in any way.
  • a speaker 40 is provided for audibly communicating signal 11.
  • Unit 10 includes a plurality of depressible control buttons, which are relatively similar to those found on known audio devices. The buttons are:
  • Levels 1, 2 and 3 are used to navigate between and within content.
  • level 1 selects between particular publications from with a stored set of data — such as different magazines or newspapers.
  • Level 2 selects major sections from within a publication - such as "business" or “sports” sections of a newspaper.
  • Level 3 selects sub-sections within a major section - such as individual articles.
  • Annotated text refers to a data type that includes digital textual information that is digitally bookmarked to define one more sections and subsections.
  • a data file is representative of the text of a newspaper, and is annotated such that headlines and other headings are searchable.
  • the users who have ordered this newspaper are typically provided with an updated version each day. That is, system 1 is able to assist a visually impaired user to enjoy the usual newspaper reading habits and regimes of an able-bodied person. Similar comments apply to other examples where the data file is representative of a book or other work.
  • Unit 10 includes a plurality of ports on side 50. These include a headphone port 51 for connecting headphones or other suitably adapted audio jacks.
  • a plurality of multi use ports 52 are provided for receiving data from an external source - such as a USB device or computer network - or transmitting data to a peripheral device - such as a monitor, television, Braille device, printer, or the like. Other arrangements will be evident to those skilled in the art.
  • further wireless ports are provided for receiving and transmitting data, such as via GPRS, satellite links, Bluetooth, WLAN and other various wireless protocols.
  • a key lock mechanism 54 is provided to selectively preclude the functionality of buttons 41 to 49. It will be appreciated that this reduces the risk of inadvertent operation.
  • unit 10 is capable of storing the desired font size and reproducing that automatically for the user.
  • the user is able to playback the data file as many times as desired and search functionality is provided, at least insofar as allowed by delivery rules that apply.
  • the data 2 being a newspaper
  • the user is able to skip stories, or progress to an index and the like.
  • system 1 is then able to alert those users to new data 2 that, based upon their historical preferences, may well be of interest.
  • system 1 As the data 2 is digitally stored and disseminated the costs of system 1 are able to be contained, even in the event of many users. This allows system 1 to more easily provide newer data 2 than was possible with prior art systems. Moreover, the increased security offered by units 10 gives a greater assurance to the data 2 providers that unauthorised copying or piracy will not be such a cause for concern.
  • An alternative playback unit is an MPEG-3 playback device with appropriate modifications to interface with gateway 2.
  • the receiver and playback unit are configured to:
  • unit 10 is simply updated to all users simultaneously. • Allows for a revenue model as outlined above.
  • system 1 Other functionality that is offered by system 1 includes:
  • the benefits of the embodiments of the invention include: • Low Cost Per Delivery.
  • the transmission or dissemination of the data file is totally at the discretion of the administrator of system 1. Accordingly, if a user does not have enough funds in their account to allow an order to be approved by the administrator, the signal identifier will not be such as to allow the user's unit 10 to decode the relevant information.
  • Unit 10 has no facility to allow copying of the digital data.
  • the only access provided to that data is when it is converted in real time to the playback format.
  • this format is an analogue format, and provided in real time, it provides a significant barrier to reproduction.
  • system 1 is able to be implemented in a far more cost effective way - on a per user basis - this further reduces the incentive for person to copy the data. That is, the cost differential between the original and a copy - if that were made - is reduced so as to be far less unattractive or plausible to a person contemplating making such copies.
  • the data file is not sent in real time, in that it is compressed. This facilitates the handshaking operation between the unit - by means of the unique identifier - and the signal - by means of the signal identifier.

Abstract

A system (1) is provided for disseminating media data (2). System (1) includes a data gateway (3) for selectively accessing data (2) from a media database (4). Upon accessing data (2), gateway (3) defines a signal identifier (5) and packages data (2) to provide a data signal (6) indicative of data (2) and identifier (5). Gateway (3) then outputs this signal to a playback unit (10). Unit (10) is responsive to identifier (5) for selectively extracting data (2) from signal (6) to provide an output signal (11) that is derived from the data (2). For example, where data (2) is a digital audio file, signal (11) is an audible representation of that audio file. Embodiments of the invention are suitable for distributing audible media for the visually impaired.

Description

TITLE: A SYSTEM FOR DISSEMINATING DATA
FIELD OF INVENTION
The present invention relates to a system for disseminating data. The invention has been developed primarily for delivering audible media to visually impaired persons, and will be described hereinafter with reference to that application. However, the invention is not limited to that particular field of use and is also suitable for providing visual and other information to visually impaired persons and able-bodied persons alike. BACKGROUND There have been a variety of attempts to provide visually impaired persons with access to a larger portion of the great wealth of written material that is available. Historically the proportion of the population requiring such assistance has been considered minimal and this has hindered investment in possible solutions, certainly from the private sector. However, with increases in the average life expectancies and the progressive degradation of a person's vision with age - for example, the condition of macular degeneration - has significantly broadened the number of people who would benefit from the type of tools previously used only for those persons with severe vision impairment. There is also an increased use of the written word in every day life, and to have an increasingly large segment of the population effectively excluded from using such forms of communication is culturally isolating for those persons and can lead to discomfort, a lack of confidence, and a fracturing of society. A known system for assisting visually impaired persons in Australia to access and enjoy the benefits of written material includes a central library that retains a selection of voice recorded four track magnetic tapes. The content contained on the tapes is a sound recording of a person or persons reading a predetermined published book. The cost of these recordings is considerable and limits the range of book titles that are ultimately available for use with the system. Typically, the available titles are of books that were published some time previously.
A user of such a system must be supplied with a four track tape player. These players are not readily available to the consumer market, are specialised devices and are typically expensive. Manufacturers of such devices include Plextor, Visuaide, LP Pro and Sigtuna. Use is made of four track players to act as a deterrent to those less scrupulous members of the community who would otherwise copy the tapes for sale or otherwise. Given the cost of actually recording the tapes, there is considerable financial incentive for piracy. The user contacts the library via a residential telephone and interacts with an operator who has been assigned to the role. If the user does not have a suitable 4-track player, arrangements are made to have one sent to the residence through the postal system or other similar arrangement. In Australia, the cost of the postage is carried by the public sector and not passed directly onto the user. The user also interacts with the operator via telephone to select one or more tapes from the available range. The selected tape or tapes physically located by the operator and placed in the postal system to be subsequently delivered to the residence. The postage costs are also met by the public sector in the example of Australia.
Once the user has listened to the tape or tapes, they are returned to the library, again via the postal system. While the same applies for the player, in that they are returned by post, there is usually a little more inertia involved, particularly if the user subsequently orders additional tapes within a short time period. In Australia, the postal costs for the return of tapes and players are fully subsidised by the relevant government agency. As the number of users of such a system increases, there are considerable barriers to expansion. These include the capital cost of new equipment — players and tapes - and the running costs - including staffing and postage. With increasing pressure on the allocation of government spending, and the rise of the user pay mentality, such systems are proving difficult to sustain, let alone expand. Moreover, the delays inherent are also a source of frustration to users.
In summary, the existing system is disadvantageous for many reasons, including:
• The fluctuating time between order and delivery of the tapes.
• The limited number of copies of the tapes. • The significant maintenance costs for the players and tapes.
• The geographic location of the libraries.
• The labour intensive delivery and retrieval process. Some thought has gone into alternative systems making use of electronic media to disseminate the required content to users. However, there is considerable hesitation on behalf of the commercial sector to involve themselves in catering to this market due to concerns over the security of any content that is offered. This has to date proved to be an insurmountable barrier.
The discussion of the prior art within this specification is to assist the addressee understand the invention and is not an admission of the extent of the common general knowledge in the field of the invention. SUMMARY OF THE INVENTION It is an object of the present invention to overcome, or at least substantially ameliorate, one or more of the disadvantages of the prior art or at least to provide a useful alternative.
According to a first aspect of the present invention, there is provided a system for disseminating data, the system including: a data gateway for: selectively accessing the data from a storage device; defining a signal identifier; packaging the data to provide a data signal indicative of the data and the signal identifier; and outputting the data signal; and a playback unit that is responsive to the signal identifier for selectively extracting the data from the data signal to provide an output signal that is derived from the data.
Preferably the signal identifier is indicative of one or more delivery rules. More preferably the playback unit is responsive to the delivery rules for extracting the data.
Preferably the data and data signal are digital and the output signal is analogue. More preferably, the data and data signal are not digitally obtainable from the playback unit. Preferably packaging the data includes compression of the data, and extracting the data includes decompression of the data from the data signal. More preferably, - A - packaging the data includes encryption of the data, and extracting the data includes decryption of the data from the data signal.
Preferably the output signal is an audible representation of the data. More preferably the data is indicative of text, and the playback unit includes a text-to-speech converter for generating the audible representation from the text. Preferably the playback unit includes: data indicative of a unit identifier; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the data is to be extracted from the data signal.
Preferably the playback unit validates the signal identifier to determine a tier of access to the output signal. Also preferably, the access tier is selected from one or more of the following: time-limited audible representations; time-limited visual representations; time-limited tactile representations; use-limited audible representations; use-limited visual representations; use-limited tactile representations; open audible representations; open visual representations; and open tactile representations.
Preferably the data gateway includes an interface for receiving a request from a user having an associated playback unit, and the gateway is responsive to the request for outputting the data signal for extraction by the associated playback unit. More preferably the request is indicative of the data. Still preferably the gateway is controlled by an administrator and is selectively responsive to the request for accessing and packaging the data to provide the data signal.
In a preferred embodiment, the user has an account. In some cases the account is debited in response to the request. Preferably the gateway is responsive to the account for defining the signal identifier. Preferably the system includes a protocol for identifying a visually impaired candidate to whom the playback unit is to be assigned.
According to a second aspect of the invention, there is provided a playback unit for selectively providing an output signal derived from data, the unit including: a unit identifier; an input for receiving a data signal indicative of: a signal identifier; and the data; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the output signal is to be provided.
According to a third aspect of the invention there is provided a system for disseminating data, the system including: a storage device for storing the data; a data gateway for selectively accessing and packaging the data to provide a data signal having a signal identifier; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a wireless receiver of a user for receiving the wireless signal and extracting the identifier; a playback unit being responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
Preferably, the packaging of the data to form the data signal includes compressing the data. More preferably, the packaging of the data to form the data signal includes encrypting the data. Even more preferably, the extracting of the data by the playback unit includes the decompression and/or decryption of the data from the wireless signal.
Preferably also, the output signal is such as to allow an audible representation of the data to the user. More preferably, the output signal is such as to allow a visual representation of the data to the user, hi some embodiments, output signal is such as to allow both visual and audible representations of the data to the user. In a preferred form, the data includes text and the playback unit includes a text-to- voice converter for providing the output signal.
Preferably, the playback unit includes a unique identifier which is compared with the signal identifier to select whether or not the data is to be extracted from the data signal. More preferably, the playback unit compares the signal identifier with the unique identifier to determine a type of access to the output signal that is provided to the user. Even more preferably, the type of access to the output signal provided to the user is selected from one or more of the following types: time-limited audible representations; time-limited visual representations; time-limited tactile representations; open audible representations; open visual representations; and open tactile representations.
Preferably also, the system includes an ordering facility and the user interacts with the facility to place an order of the data. More preferably, the gateway is controlled by an administrator and is selectively responsive to the order for accessing and packaging the data to provide the data signal.
In a preferred form, the facility includes an account for the user that is debited in response to the order and credited in response to a payment from the user to the administrator. More preferably, the gateway is responsive to the account for determining the signal identifier. That is, if the account is acceptable to the administrator - that is, the user has sufficient funds or credit within the account -the identifier is determined such that the playback unit is able to provide the user with predetermined access to the data. Conversely, if the user has insufficient funds or credit within the account, the identifier is determined such that the playback unit is unable to provide the user with predetermined access to the data. In this way, the administrator is provided with complete discretion as to whether or not the user able to access the data.
Preferably, the playback unit is securely contained within a housing such that the data is not available to be accessed by the user. More preferably, the unit includes memory contained within the housing for storing the unique identifier. Even more preferably, the housing, in use, is in a locked configuration and movement of the housing from the locked configuration erases the unique identifier from the memory. According to a fourth aspect of the invention there is provided a system for disseminating data, the system including: a storage device for storing a plurality of data groups; a data gateway for selectively accessing and packaging the data groups to provide respective data signals, each having a signal identifier; a wireless transmitter that is responsive to the data signals for transmitting respective wireless signals; a plurality of wireless receivers of a corresponding number of users for receiving the wireless signals and extracting the identifiers; a playback unit for each receiver, each unit being responsive to only predetermined identifiers for selectively extracting the respective data groups from the relevant data signals to provide the respective users with predetermined access to selected ones of the data groups.
Preferably, each user is a separate party. However, in some embodiments, a user includes more than one person.
Preferably also, the packaging of the data groups to form the respective data signals includes compressing the data groups. More preferably, the packaging of the data groups to form the respective data signals includes encrypting the data. Even more preferably, the extracting of the data groups by the playback units includes the decompression and/or decryption of the data groups from the respective wireless signals.
Preferably also, the playback unit audibly represents the extracted data groups to the user with predetermined access. More preferably, the playback unit visually represents the data groups to the users with predetermined access. In some embodiments, the playback unit both visually and audibly represents the data to the user.
In a preferred form, the data groups include text and the playback units include respective text-to-voice converters for allowing the data groups to be audibly represented to the user. Preferably, each playback unit includes a unique identifier which is compared with the signal identifier to determine whether or not the data group is to be extracted from the data signal. More preferably, each playback unit compares the signal identifier with the unique identifier to determine a type of access to each data group that is provided to the user. Even more preferably, the type of access provided to the user a respective data group is selected from one or more of the following types: time- limited audible access; time-limited visual access; time-limited tactile access; open audible access; open visual access; and open tactile access.
Preferably also, the system includes an ordering facility and the user interacts with the facility to place an order of the desired data group. More preferably, the gateway is controlled by an administrator and is selectively responsive to the order for accessing and packaging the data groups to provide the data signal. hi a preferred form, the facility includes an account for each user, where the accounts are debited in response to respective orders from the users and credited in response to payments from the respective users to the administrator. More preferably, the gateway is responsive to the accounts for determining the signal identifier. That is, if the users place respective orders, and the accounts are acceptable to the administrator - that is, the users each have sufficient funds or credit within the account —the identifier is determined such that all the playback units are able to provide the user with predetermined access to the relevant data group. Conversely, if one user has insufficient funds or credit within the respective account, the identifier is determined such that the playback unit associated with that user is unable to provide the user with predetermined access to the relevant data group, hi this way, the administrator is provided with complete discretion as to whether or not each user able to access the data groups.
According to a fifth aspect of the invention there is provided a playback unit for a user, the unit including: a wireless receiver for receiving a wireless signal containing a data signal and a signal identifier, wherein the receiver extracts the identifier from the wireless signal; a controller being responsive to the signal identifier and a unique identifier associated with the unit to determine whether the user has been granted access to the data signal; and an output port that is responsive to the controller if the user has been granted access to the data signal for providing an output signal that is derived from the data signal.
Preferably, the data signal is compressed and the controller includes the step of decompressing the data signal. More preferably, the data signal is compressed and the controller includes the step of decompressing the data signal.
Preferably also, the playback unit includes memory for selectively storing the data signal. More preferably, the memory is non- volatile and stores the unique identifier. In a preferred form, the receiver, the controller, the memory and the output port are contained within a housing. More preferably, the housing is securely sealed. Even more preferably, the controller is responsive to a break of the seal to erase the unique identifier from the memory.
Preferably, the output signal is provided to a reproduction device that provides an interface for the user. For example, in some embodiments, the reproduction device is an audio device such as an audio amplifier and associated speakers. In other embodiments, however, the reproduction device is a visual device such as a video monitor. In further embodiments, the reproduction device an audiovisual device such as a television monitor. Preferably also, the output signal, while being derived from the data signal, is configured specifically to drive the reproduction device.
In a preferred form, the output port includes data lines and at least one control line. More preferably, the data lines are read only. Even more preferably, the control lines are read and write capable for allowing the user to determine which of the data is used to provide the output signal.
Preferably, the wireless signal is routed through one or more satellites. According to a sixth aspect of the invention there is provided a playback unit for a user, the unit including: a housing that is locked into a closed configuration; a memory device disposed within the housing and which stores a unique identifier for the unit; a wireless receiver disposed within the housing for receiving a wireless signal that contains a data signal, the receiver being responsive to the wireless signal and the unique identifier for determining whether the user has been granted access to the data signal; an output port mounted to the housing and which is externally accessible from the housing, wherein the port is responsive to the receiver for selectively providing an output signal that is derived from the data signal; and a security device that is responsive to movement of the housing from the closed configuration for clearing the memory device of the unique identifier. Preferably, the housing includes two complementary plastics members that are opposed and interlockingly engaged in the closed configuration. More preferably, the security device includes two stations that are engaged with respective members and a link that spans between the stations, whereby movement of the members from the closed configuration severs the link and initiates the clearing of the memory device. Preferably also, one of the stations defines a first electrical contact and the other of the stations and the link collectively define a second electrical contact. More preferably, in the closed configuration, the first and second contacts are engaged with each other. Even more preferably, the contacts move out of engagement with each other as the housing is moved from the closed configuration. According to a seventh aspect of the invention there is provided a system for disseminating data, the system including: a storage device for storing the data; a data gateway for selectively accessing and packaging the data to provide a data signal having a signal identifier; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a plurality of wireless receivers for a corresponding number of users, each receiver having a unique identifier and being adapted for receiving the wireless signal and extracting the signal identifier; a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal identifier for permitting or preventing the respective units from extracting the data from the data signal.
Preferably, the receivers receive the wireless signal substantially simultaneously. Preferably also, the gateway is controlled by an administrator and the signal identifier is determined such that a selected one or more of the units are able to extract the data from the data signal.
Preferably also, the data, if extracted, is converted into an output signal for driving a display device. That is, the output signal, while being derived from the data, is not the data itself and is not open to be easily reproduced by the user. That is, the output signal is in a read only format. In some embodiments the read only format is viewable by the user. In other embodiments, the read only format is audible to the user. More preferably, the read only format is both viewable and audible to the user.
According to a eighth aspect of the invention there is provided a system for disseminating data, the system including: a storage device for storing the data; a data gateway for selectively accessing and compressing the data to provide a data signal, the data signal including a signal handshake; a wireless transmitter that is responsive to the data signal for transmitting a wireless signal; a plurality of wireless receivers for receiving the wireless signal and for extracting the signal handshake, wherein each receiver is associated with a corresponding user and has a unique handshake identifier that, if compatible with the signal handshake, allows the receiver to extract the compressed data from the data signal; and a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal handshake for selectively allowing progressive decompression of the data into an output signal.
Preferably, the decompression of the data occurs progressively in real time. For example, in embodiments where the output signal drives an audio amplifier, the data is progressively decompressed to allow the user to listen serially to the audible sequence resulting from the output signal. According to a ninth aspect of the invention there is provided a method for disseminating data, the method including: storing the data in a storage device; selectively accessing and packaging the data to provide a data signal having a signal identifier; being responsive to the data signal for transmitting a wireless signal; receiving the wireless signal with a wireless receiver of a user, the receiver extracting the identifier; being responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
According to an tenth aspect of the invention there is provided a method for disseminating data, the method including: storing a plurality of data groups in a storage device; selectively accessing and packaging the data groups to provide respective data signals, each data signal having a signal identifier; being responsive to the data signals for transmitting respective wireless signals; receiving the wireless signals and extracting the identifiers at a plurality of wireless receivers of a corresponding number of users; providing a playback unit for each receiver, each unit being responsive to only predetermined identifiers for selectively extracting the respective data groups from the relevant data signals to provide the respective users with predetermined access to selected ones of the data groups. According to a eleventh aspect of the invention there is provided a method of providing a user with an output signal from a playback unit, the method including: using the unit to receive a wireless signal containing a data signal and a signal identifier, wherein the unit extracts the identifier from the wireless signal; providing a controller that is responsive to the signal identifier and a unique identifier associated with the unit to determine whether the user has been granted access to the data signal; and providing an output port that is responsive to the controller if the user has been granted access to the data signal for providing the output signal, wherein the output signal is derived from the data signal.
According to a twelfth aspect of the invention there is provided a method of securing a playback unit that has been allocated to a user, the method including: providing a housing that is locked into a closed configuration; disposing a memory device within the housing for storing a unique identifier for the unit; disposing a wireless receiver within the housing for receiving a wireless signal that contains a data signal, the receiver being responsive to the wireless signal and the unique identifier for determining whether the user has been granted access to the data signal; mounting an output port to the housing such that it is externally accessible from the housing, wherein the port is responsive to the receiver for selectively providing an output signal that is derived from the data signal; and providing a security device that is responsive to movement of the housing from the closed configuration for clearing the memory device of the unique identifier.
According to an thirteenth aspect of the invention there is provided a method for disseminating data, the method including: storing the data in a storage device; selectively accessing and packaging the data to provide a data signal having a signal identifier; being responsive to the data signal for transmitting a wireless signal; providing a plurality of wireless receivers for a corresponding number of users, each receiver having a unique identifier and being adapted for receiving the wireless signal and extracting the signal identifier; providing a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal identifier for permitting or preventing the respective units from extracting the data from the data signal. According to a further aspect of the invention there is provided a method for disseminating data, the method including: storing the data in a storage device; selectively accessing and compressing the data to provide a data signal, the data signal including a signal handshake; being responsive to the data signal for transmitting a wireless signal; providing a plurality of wireless receivers for receiving the wireless signal and for extracting the signal handshake, wherein each receiver is associated with a corresponding user and has a unique handshake identifier that, if compatible with the signal handshake, allows the receiver to extract the compressed data from the data signal; and providing a plurality of playback units associated with respective receivers, the units being responsive to respective unique identifiers and the signal handshake for selectively allowing progressive decompression of the data into an output signal.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a schematic representation of a system for disseminating data in accordance with an embodiment of the present invention;
Figure 2 is a schematic representation of an exemplary implementation of the system of Figure 1;
Figure 3 is a schematic representation of a further exemplary implementation of the system of Figure 1; Figure 4 is a schematic representation of another exemplary implementation of the system of Figure 1;
Figure 5 is schematic front view of a playback unit;
Figure 6 is a schematic side view of the exemplary playback unit of Figure 5; Figure 7 illustrates an exemplary method for processing a request; Figure 8 illustrates an exemplary method for defining a signal identifier; and
Figure 9 is a schematic representation of an implementation similar to that of Figure 4. DETAILED DESCRIPTION
Referring to Figure 1, there is illustrated a system 1 for disseminating media data 2. System 1 includes a data gateway 3 for selectively accessing data 2 from a media database 4. Upon accessing data 2, gateway 3 defines a signal identifier 5and packages data 2 to provide a data signal 6 indicative of data 2 and identifier 5. Gateway 3 then outputs this signal to a playback unit 10. Unit 10 is responsive to identifier 5 for selectively extracting data 2 from signal 6 to provide an output signal 11 that is derived from the data 2. For example, where data 2 is a digital audio file, signal 11 is an audible representation of that audio file. In the present embodiment, system 1 is configured for the primary purpose of providing media to a visually impaired user 15, who has access to unit 10. It will be appreciated, however, that user 15 need not be visually handicapped. It will further be appreciated that in other embodiments system 1 configured for other purposes. For example: disseminating data in a broader context. For the present purposes, a group of visually impaired candidates are selected.
This group includes user 15. These include both persons born with visual impairment, as well as persons who have developed or incurred such a disability at some point - such as sufferers of macular degeneration. Techniques and protocols for identifying candidates vary between embodiments. The underlying rationale is typically that public policy subsidises the costs of access to various media to assist the visually impaired. System 1 allows convenient dissemination of such media — which is electronically stored in database 4 - to identified candidates. Importantly, accessing media through system 1 requires very little intervention from a candidate, which is particularly advantageous in the case of the visually impaired. A candidate simply requests the desired media, which is delivered to that candidate's unit 10. There is no need for an intermediate step whereby media is delivered to a secondary location for subsequent pro-active download by the candidate. Such an intermediate step is seen to render a similar system too difficult for certain visually impaired users, such as elderly users with little or know experience in using media transfer technology. System 1 also restricts persons who are not candidates from accessing media that should not be freely available to them. As will be described below, in some embodiments such persons are provided access to the media, however in accordance with protection standards and typically on a user-pays basis.
Once user 15 is identified as a candidate, he or she is provided with a unit 10 having a unique identifier, as described in greater detail further below. This identifier is used to for the purposes of delivery location, media protection, and account maintenance. This effectively removes the need for two-way communication between gateway 2 and unit 10, which reduces per-unit costs and simplifies communication infrastructure required for implementation.
Although system 1 is shown with a single user 15, this is for simplicity of illustration, hi practice, system 1 includes a plurality of geographically spaced apart users with respective units 10.
Database 4 includes many separate sets of data 2 that are representative of different digital contents. For example, some of the sets are representative of the text of particular written works of respective authors. Other sets are representative of text from a periodic or regular publication such as a magazine, a newspaper or a comic. Other sets include, but are not limited to, audio books, short stories, old time radio shows, serials, community information, and journals. Among these are written works that have been translated to Braille. Both DAISY and Non-DAIS Y compliant data is held. A particular class of data 2 that is well suited to the present embodiment is a digitally annotated text file. This is a text file adapted to allow convenient searching across a number of searching levels, as described in greater detail further below.
Typically signal 11 is an audible representation of data 2. Given that data 2 is often indicative of text, unit 10 includes a text-to-speech converter for generating an appropriate audible representation from the text. Such converters will be known to those skilled in the art.
In other embodiments sets are representative of video works such as theatrical performances, general interest programs, special interest programs, children's programs, sporting events and the like. Image files are also considered. It will, however, be appreciated that content typically suitable for visual representation is less ideal for the present embodiment, given that user 15 is visually impaired. Output signal 11, in this embodiment, is suitable as in input for an audio amplifier. That is, the user is able to listen to a sound sequence provided through a headset or speakers. In embodiments making use of visually displayable data, signal 11 is viewable through a television or other screen. In some such embodiments, unit 10 is integrated with a set-top box or cable signal decoder.
All the sets of data referred to above include "content". That is, they include material that is authored, in some way, and which is thought to be desired by the users of system 1. This content is, in many cases, proprietary. Accordingly, the author and/or owner of the content will not wish for that content to be copied or used in an unauthorised way. As will be described below, the system of the present embodiment addresses this issue effectively.
Gateway 2 includes an interface 16 for receiving a request 17 from user 15. In the present embodiment, this request is typically provided by telephone. Despite this, a variety of other communication means are also available, such as SMS, email, facsimile, and inter-personal communication. In some embodiments user 15 provides request 17 directly to interface 16. In other embodiments the request is provided to an operator who, in due course, enters the request into interface 16. In some embodiments interface 16 includes a human operator.
Where user 15 places request 17 by telephone, this request is placed with a human operator, an automated telephone answering system, or an Internet interface. In some cases the automated telephone answering system is voice activated, while in other cases it is activated by the user keying numerals via the telephone.
In some cases, request 17 is indicative of data 2. For example, one or more particular audio books are ordered. In other cases, request 17 is indicative of a particular subscription service - such as a service for a newspaper that each day provides a digitally annotated text file of the newspaper for that day.
Upon receipt request 17, gateway 2 is responsive to the request for outputting data signal 6 for extraction by the associated playback unit 10. As such request 17 must identify unit 10. To this end, unit 10 includes data indicative of a unit identifier 20. Identifier 20 is communicated by user 15 in request 17 to facilitate identification of unit 10. Identifier 20 is also used for user account rights management and for enforcing delivery rules, as discussed below. Figure 7 illustrates an exemplary method for handling request 17. This method is exemplary only, and should not be considered as limiting in any way. Moreover, those skilled in the art will recognise a variety of possible additions, modifications, and permutations that are applied to the example. Once request 17 is received, the necessary information is extracted to determine the unit identifier 20 for the unit 10 of user 15, and media data that is being requested. As an example, in an embodiment where interface 16 includes a keypad activated telephone answering system, identifier 20 and a numeric string identifying data 2 are manually entered by user 15 via telephone keypad. In some embodiments voice recognition is used.
In the present embodiment, user 15 has a user account. This user account is maintained in a database accessible to interface 16, and includes various fields of information relating to user 15. In particular, this information includes user account privileges, and user account credit information. User account privileges are used to restrict or grant the user access to particular data 2. For example, some data 2 is only accessible by certain users. Alternately, some data 2 is accessible to some users at no cost, whilst other users must pay for that data. This is relevant in situations where a subsidy is arranged to provide visually impaired persons free access to particular media, typically due to governmental policy. In such a case, a visually impaired user is granted free access to particular types of data 2, whilst a visually capable user is required to pay for the right to access that data. It will be appreciated that the visually impaired user is provided with a unit 10 having an identifier 20 associated with a higher level of user account privilege to facilitate this.
Once interface 16 determines the user account and requested media data, it is determined whether user 15 has the necessary privilege to access that data. If not, the process is terminated and the user informed. Otherwise, it is determined whether user 15 has sufficient privilege to access the data for free. If this is the case, the data is extracted, an identifier 5 is defined, and a data signal is sent to unit 10. Otherwise a credit check is performed and, assuming sufficient credit exists, the user account is debited for a cost associated with the requested data. Following this, the data is extracted, an identifier 5 is defined, and a data signal is sent to unit 10. If there is insufficient credit the process is terminated and the user is informed. In some embodiments users are allowed to have less than zero credit for predetermined time periods.
Informing the user is carried out optionally by several techniques, primarily dependant on the nature of interface 16. For example, one technique involves informing user 15 of difficulties by telephone at the time of receiving the request. In another example, a message is sent to unit 10 informing user 15 of reasons for which the process was terminated. Typically, this message is outputted as signal 11.
It will be appreciated that there exist a number of further reasons for which the process is terminated. For example: failure to identify a valid identifier 20, or failure to identify available data 2. hi some embodiments, user 15 places a request with through interface 16 for the desired data 2. Interface 16 provides the user with an indication as to what the financial status of the account will be should that order be followed through. Once the user confirms that this is in accordance with their desires, the order is completed and the account updated accordingly. Interface 16 then informs the user as to the time or times that the content will be disseminated through system 1.
For some data there will be little or no demand from users for access. For other data there will be high demand. The scheduling of the dissemination through system 1 is dynamically reconfigurable - through use of gateway 2- in response to changing demands for the different data.
Figures 2 to 4 schematically illustrate various models for providing such a service to visually impaired candidates such as user 15.
Figure 2 illustrates an example wherein gateway 2 is maintained within a terminal 21 located in a public library. User 15 physically visits that library, and interacts with the terminal to gain access to media. In the present embodiment, a human operator controls terminal 21, and communicates verbally with user 15 to provide the necessary assistance. Customer service levels vary between cases, however typically the user and controller are at liberty to discuss media that is available and that may be of interest. User 15 then selects one or more media items, and the controller uses terminal 21 to download data 2 indicative of that media to the unit 10 of user 15. In some embodiments unit 10 is a portable unit that user 15 carries to the library, and signal 6 is downloaded via local transfer means 22. These include physical cable connections with the terminal - such as USB cable - and wireless connections - such as Bluetooth or infrared. In other embodiments, unit 10 is not portable, and left at the residence of user 15. In such cases signal 6 is transmitted from terminal 2 to unit 10 via wide area communications (not shown), such as the internet, telephone, GPRS5 satellite, and so on. In further embodiments unit 10 includes both portable and non-portable components. For example, unit 10 includes a removable flash drive that is taken to the library.
Li some library implementations, unit 10 is a non-portable machine located within the library, and user 15 experiences media through that machine. Typically, user 15 is supplied with an identification code for accessing such a machine.
Figure 3 illustrates an at-home lending model. This is similar to the example of Figure 2, however gateway 2 is maintained on a portable terminal, such as a laptop computer 23. A service provider takes this laptop to the residency of user 15, and this residency effectively functionally imitates the library of the previous example. That is, user 15 personally deals with the service provider, and is provided with media upon request. In some cases, database 4 is not entirely contained on the internal storage of laptop 23, and some data 2 is accessed from a remote location - such as servers located on participating libraries or other facilities worldwide. For example, the laptop has a wireless Internet connection, and downloads data 2 from a remote server over the Internet. This data is then packaged into data signal 6 using the laptop, which is transmitted to unit 10. It will be appreciated that this implementation allows a virtually unlimited library of information (limited only by the quantity of data 2 available in database 4 in a worldwide sense) to the residency of a visually impaired candidate such as user 15. Figure 4 illustrates a typical example that makes use of a remote server 24 to maintain gateway 2, and user 15 interacts with this server via wide area communication means 25 - such as telephone. Examples of this implementation have been provided above. A more specific example is provided in Figure 9. In this example, data gateway 2 includes a wireless transmitter for outputting the data signal in a wireless communication, and unit 10 a wireless receiver for receiving the wireless communication. More specifically, gateway 2 is provided in the form of a computer network 123, which selectively accesses and packages the data to provide a data signal having a signal identifier. A wireless transmitter 124 is responsive to the data signal for transmitting a wireless signal to a satellite 125. A wireless receiver 126 located at a user's residence 127 receives the wireless signal via satellite 125 and extracts the identifier. Unit 10 is responsive to the identifier for selectively extracting the data from the data signal to provide the user with an output signal that is derived from the data.
At the scheduled time, network 123 accesses the required data or data 2 from database 4 and compresses and encrypts it into a data file. This is passed to the transmitter 124 where it is combined with a signal identifier and thereafter transmitted wirelessly to satellite 125. The signal identifier includes a coded string that is indicative of which of the users are permitted to playback the data 2 contained within the data file. In this embodiment, the users are identified by way of a unique identifier that is associated with unit 10.
The satellite retransmits the signal such that it is received by all the receivers 126 in system 1 that are operative at that time. That is, a single transmission of the data 2 is sufficient to ensure dissemination to all active users.
Receivers 126 extract the signal identifier and the data file from the wireless signal and pass these onto unit 10. The unit includes a control circuit (not shown) for reading the signal identifier and a memory circuit (not shown) that stores the unique identifier. The control circuit compares the two identifiers and, if compatible, allows further processing of the data file. Otherwise, no further processing of that file is permitted.
In other embodiments, the data file is not even extracted from the wireless signal unless the handshake between the signal identifier and the unique identifier has occurred. Moreover, in other embodiments, the comparison of the identifiers occurs in the receiver.
Referring again to Figure 1, when packaging data 2 to provide data signal 6, data 2 is compressed and encrypted. The compression is intended to reduce communication requirements by reducing the amount of digital information. Indeed, the compression of the data file allows a short wireless transmission to provide many hours of playback. For example, a wireless transmission lasting one minute would be sufficient to transmit enough data for many hours or audio playback to user 15. The encryption is intended to prevent unauthorised users from accessing data 2.
It will be appreciated that, due to the compression and encryption, unit 10 engages in decompression and decryption of signal 6 prior to outputting signal 11. To facilitate electronic rights management, unit 10 is enabled to only perform this decompression and decryption when certain predetermined conditions are met. This is determined by reference to identifiers 5 and 20. More specifically, unit 10 includes a processor 30 that is responsive to the identifier 20 and unit identifier 5 for validating identifier 20. From this, processor 30 to selects whether or not data 2 is to be extracted from the data signal 6. This validation is commonly referred to as a handshake.
If unit 10 determines that it is permitted to extract signal 6, it typically awaits commands from the user before doing so. hi this embodiment, unit 10 is able only to playback a representation of the signal 6. The unit cannot download the file itself nor transmit the file to another medium. Accordingly, when instructed to commence playback, unit 10 decrypts and decompresses a portion of the signal. That is, the data file is progressively converted to a format for providing the playback, hi some cases, on the other hand, the whole data file is converted to the playback format prior to any playback occurring. It will be therefore appreciated that gateway 2 defines identifier 5 by reference to identifier 20 such that extraction is allowed by the relevant unit 10. Figure 8 illustrates an exemplary method for defining identifier 5. Again, this example is not to be considered as limiting in any way. Gateway 2 is responsive to two major sources of information: identifier 5, and data indicative of delivery rules. In some embodiments, however, delivery rules are not used. Delivery rules are, in this case, used to selectively limit the usage of data 2 in unit 10, and are defined in terms of access tiers. There are three major categories of access tier, as set out below. Time-limited. This provides a window of time during which data 2 is extractable. For example, data 2 is extractable for a predetermined period of time, such as one week. During that week, data signal 6 is extractable in unit 10 on a substantially unlimited number of occasions. Once that week ends, identifier 5 is no longer validated in a manner to allow extraction of data signal 6. Use limited. In this case, signal 6 is only extractable on a single or limited number of occasions.
Open. In this case, signal 6 is extractable an unlimited number of occasions. In some cases, "open" is equivalent to there being no defined delivery rules. In the present embodiment, where a signal 6 is validated in a manner that results in extraction being rejected, that signal 6 is automatically deleted form the internal memory of unit 11. In other embodiments all deletion is carried out manually. In some further embodiments gateway 2 transmits a signal indicative of a command to automatically delete one or more signals stored in the internal memory of unit 11. For example, a previous issue of an e-newsletter is automatically deleted upon receipt of a newer issue.
It will be appreciated that the use of validation within processor 20 reduces the risk of data 2 being reproduced for authorised use. To further assist in this, data 2 and data signal 6 are digital, whilst output signal 11 is analogue. It will be appreciate that an analogue signal is not conveniently reproduced, at least in comparison to digital counterparts. To assist further, data 2 and data signal 6 are not digitally obtainable from the playback unit.
In some embodiments unit 10 is contained within a secure housing such that the data is not available to be accessed by the user except as delivered in the playback format. Moreover, the memory is contained within the housing and is responsive tampering with the housing for erasing the unique identifier. That is, should a less scrupulous person attempt to gain access to the data file, as opposed to the output signal, unit 10 will be disabled. This provides a significant barrier to copying of the data 2 provided through system 1. In some embodiments, the housing includes an electromechanical switch that is connected between two portions of the housing, hi the event of relative movement between those portions the switch toggles to actuate the controller to erase the unique identifier from the memory.
In other embodiments alternative triggers are used to actuate the controller. An exemplary unit 10 is illustrated in Figures 5 and 6, this being a handheld device for use by the visually impaired. As with other examples provided herein, it should not be regarded as limiting in any way. In this example, a speaker 40 is provided for audibly communicating signal 11. Unit 10 includes a plurality of depressible control buttons, which are relatively similar to those found on known audio devices. The buttons are:
• Button 41 : increases output volume. • Button 42: decreases output volume.
• Button 43: searches forward at level 3.
• Button 44: searches backward at level 3.
• Button 45: searches forward at level 2.
• Button 46: searches backward at level 2. • Button 47: searches forward at level 1.
• Button 48: searches backward at level 1.
• Button 49: starts or pauses output signal.
Levels 1, 2 and 3 are used to navigate between and within content. In particular, level 1 selects between particular publications from with a stored set of data — such as different magazines or newspapers. Level 2 selects major sections from within a publication - such as "business" or "sports" sections of a newspaper. Level 3 selects sub-sections within a major section - such as individual articles.
Levels 1, 2 and 3 are particularly useful where annotated text files are used. Annotated text refers to a data type that includes digital textual information that is digitally bookmarked to define one more sections and subsections. In one example, a data file is representative of the text of a newspaper, and is annotated such that headlines and other headings are searchable. The users who have ordered this newspaper are typically provided with an updated version each day. That is, system 1 is able to assist a visually impaired user to enjoy the usual newspaper reading habits and regimes of an able-bodied person. Similar comments apply to other examples where the data file is representative of a book or other work.
Unit 10 includes a plurality of ports on side 50. These include a headphone port 51 for connecting headphones or other suitably adapted audio jacks. A plurality of multi use ports 52 are provided for receiving data from an external source - such as a USB device or computer network - or transmitting data to a peripheral device - such as a monitor, television, Braille device, printer, or the like. Other arrangements will be evident to those skilled in the art. In some cases further wireless ports are provided for receiving and transmitting data, such as via GPRS, satellite links, Bluetooth, WLAN and other various wireless protocols.
A key lock mechanism 54 is provided to selectively preclude the functionality of buttons 41 to 49. It will be appreciated that this reduces the risk of inadvertent operation.
In some embodiments the text itself is displayed on a screen (not shown), and is enlarged to a size that best allows the user to view it. hi some embodiments, unit 10 is capable of storing the desired font size and reproducing that automatically for the user.
The user is able to playback the data file as many times as desired and search functionality is provided, at least insofar as allowed by delivery rules that apply. In the example of the data 2 being a newspaper, the user is able to skip stories, or progress to an index and the like. As users progressively gain experience with system 1, it is possible to provide individuals with information about usage patterns, hi turn, system 1 is then able to alert those users to new data 2 that, based upon their historical preferences, may well be of interest.
As the data 2 is digitally stored and disseminated the costs of system 1 are able to be contained, even in the event of many users. This allows system 1 to more easily provide newer data 2 than was possible with prior art systems. Moreover, the increased security offered by units 10 gives a greater assurance to the data 2 providers that unauthorised copying or piracy will not be such a cause for concern.
An alternative playback unit is an MPEG-3 playback device with appropriate modifications to interface with gateway 2. In combination, the receiver and playback unit:
• Consists of a "Black Box", satellite dish and remote control.
• Available 24 hours a day, seven days a week. That is, data files are able to be sent at anytime. • Interfaces to a standard television or other household devices and can be operated by a small hand-held remote.
• Takes control of all digital management rights issues. • Store over 100 hours of audio.
• Utilise any new technology through satellite firmware broadcast. Accordingly, in the event of a new audio codec is released, unit 10 is simply updated to all users simultaneously. • Allows for a revenue model as outlined above.
• Interfaces to external equipment - refreshable Braille displays. CCTV etc.
The revenue models of the preferred embodiments include:
• Sponsorship - Library/Genre/Title • Spot Advertising
• Reminders
• Government Announcements
• Pay Per Listen (Premium Service)
• Gifts of Audio from Third Parties to Clients • Training
Other functionality that is offered by system 1 includes:
• Best Sellers List.
• Short Stories.
• Old Time Radio (Serials). • SeIfHeIp.
• Educational.
• Historical Figures.
• Humour.
• Previews. • Community Service Announcements.
• Birthday and Special Reminders.
• Third Part Messages (SMS).
• Interviews.
• TV/Radio/Theatre Guides. • Refreshable Braille Display.
• CCTV Image Magnifier. • Entertainment Interface.
• Internet & E-mail.
• Medical Alert & Security.
In broad terms, the benefits of the embodiments of the invention include: • Low Cost Per Delivery.
• Immediate Delivery.
• Use of Proven Technology.
• Scalable and Upgradable.
• Centralised Library. • New Library Opportunities.
• Automation.
• Zero Media Costs.
• Revenue Streams.
The transmission or dissemination of the data file is totally at the discretion of the administrator of system 1. Accordingly, if a user does not have enough funds in their account to allow an order to be approved by the administrator, the signal identifier will not be such as to allow the user's unit 10 to decode the relevant information.
Unit 10 has no facility to allow copying of the digital data. The only access provided to that data is when it is converted in real time to the playback format. As this format is an analogue format, and provided in real time, it provides a significant barrier to reproduction. Additionally, as system 1 is able to be implemented in a far more cost effective way - on a per user basis - this further reduces the incentive for person to copy the data. That is, the cost differential between the original and a copy - if that were made - is reduced so as to be far less unattractive or tempting to a person contemplating making such copies.
In the preferred embodiment the data file is not sent in real time, in that it is compressed. This facilitates the handshaking operation between the unit - by means of the unique identifier - and the signal - by means of the signal identifier. The invention has been described with reference to a number of specific examples, and it will be appreciated that by those skilled in the art that the invention can be embodied in many other forms.

Claims

CLAMS:-
1. A system for disseminating data, the system including: a data gateway for: selectively accessing the data from a storage device; defining a signal identifier; packaging the data to provide a data signal indicative of the data and the signal identifier; and outputting the data signal; and a playback unit that is responsive to the signal identifier for selectively extracting the data from the data signal to provide an output signal that is derived from the data.
2. A system according to claim 1 wherein the signal identifier is indicative of one or more delivery rales.
3. A system according to claim 2 wherein the playback unit is responsive to the delivery rales for extracting the data.
4. A system according to claim 1 wherein the data and data signal are digital and the output signal is analogue.
5. A system according to claim 1 wherein the data and data signal are not digitally obtainable from the playback unit.
6. A system according to claim 1 wherein packaging the data includes compression of the data, and extracting the data includes decompression of the data from the data signal.
7. A system according to claim 1 wherein packaging the data includes encryption of the data, and extracting the data includes decryption of the data from the data signal.
8. A system according to claim 1 wherein the output signal is an audible representation of the data.
9. A system according to claim 8 wherein the data is indicative of text, and the playback unit includes a text-to-speech converter for generating the audible representation from the text.
10. A system according to claim 1 wherein the playback unit includes: data indicative of a unit identifier; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the data is to be extracted from the data signal.
11. A system according to claim 10 wherein the playback unit validates the signal identifier to determine a tier of access to the output signal.
12. A system according to claim 11 wherein the access tier is selected from one or more of the following: time-limited audible representations; time-limited visual representations; time-limited tactile representations; use-limited audible representations; use -limited visual representations; use -limited tactile representations; open audible representations; open visual representations; and open tactile representations.
13. A system according to claim 1 wherein the data gateway includes an interface for receiving a request from a user having an associated playback unit, and the gateway is responsive to the request for outputting the data signal for extraction by the associated playback unit.
14. A system according to claim 13 wherein the request is indicative of the data.
15. A system according to claim 13 wherein the gateway is controlled by an administrator and is selectively responsive to the request for accessing and packaging the data to provide the data signal.
16. A system according to claim 13 wherein the user has an account.
17. A system according to claim 16 wherein the account is debited in response to the request.
18. A system according to claim 16 wherein the gateway is responsive to the account for defining the signal identifier.
19. A system according to claim 1 including a protocol for identifying a visually impaired candidate to whom the playback unit is to be assigned.
20. A playback unit for selectively providing an output signal derived from data, the unit including: a unit identifier; an input for receiving a data signal indicative of: a signal identifier; and the data; and a processor responsive to the signal identifier and the unit identifier for validating the signal identifier to thereby select whether or not the output signal is to be provided.
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