WO2003026162A2 - Telephony control in the flight deck - Google Patents

Telephony control in the flight deck Download PDF

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Publication number
WO2003026162A2
WO2003026162A2 PCT/US2002/029910 US0229910W WO03026162A2 WO 2003026162 A2 WO2003026162 A2 WO 2003026162A2 US 0229910 W US0229910 W US 0229910W WO 03026162 A2 WO03026162 A2 WO 03026162A2
Authority
WO
WIPO (PCT)
Prior art keywords
audio
radiotelephony
panel
selected telephone
telephony
Prior art date
Application number
PCT/US2002/029910
Other languages
French (fr)
Other versions
WO2003026162A3 (en
Inventor
Mark L. Goldberg
Ken L. Snodgrass
Joe Reyes
Original Assignee
Honeywell, Inc.
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
Application filed by Honeywell, Inc. filed Critical Honeywell, Inc.
Priority to DE60204333T priority Critical patent/DE60204333T2/en
Priority to EP02763674A priority patent/EP1428330B1/en
Publication of WO2003026162A2 publication Critical patent/WO2003026162A2/en
Publication of WO2003026162A3 publication Critical patent/WO2003026162A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0284—Relative positioning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G01S19/15—Aircraft landing systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/51—Relative positioning
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0004—Transmission of traffic-related information to or from an aircraft
    • G08G5/0008—Transmission of traffic-related information to or from an aircraft with other aircraft
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0004—Transmission of traffic-related information to or from an aircraft
    • G08G5/0013—Transmission of traffic-related information to or from an aircraft with a ground station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/0017—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information
    • G08G5/0021—Arrangements for implementing traffic-related aircraft activities, e.g. arrangements for generating, displaying, acquiring or managing traffic information located in the aircraft
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/02—Automatic approach or landing aids, i.e. systems in which flight data of incoming planes are processed to provide landing data
    • G08G5/025—Navigation or guidance aids
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H04B7/18508—Communications with or from aircraft, i.e. aeronautical mobile service with satellite system used as relay, i.e. aeronautical mobile satellite service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40019—Details regarding a bus master
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection (CSMA-CD)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/022—Part of keyboard not operable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40267—Bus for use in transportation systems
    • H04L2012/4028—Bus for use in transportation systems the transportation system being an aircraft
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/18—Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Definitions

  • the present invention relates to an aircraft communications system, and more particularly to a telephony communications system.
  • Aircraft telephony communications systems are systems that allow an aircraft crewmember to place telephone calls through a ground based telephone system such as a Public Switched Telephone Network (PSTN).
  • PSTN Public Switched Telephone Network
  • a crew member may place telephone calls to ground based telephone customers or mobile telephone customers similarly as a person on the ground may place a call to another terrestrial user.
  • MCDU Multifunction Control and Display Unit
  • the MCDU is a common on-board system that performs many aircraft functions including flight plan management, communications, and the like.
  • An MCDU has a display screen, which may be a CRT, LCD, flat panel display, or other suitable display and an associated control panel consisting of keypads and switches to select the various functions performed by the unit.
  • a crewmember To place a telephone call through a PSTN, a crewmember must select the telephone function on the MCDU and, using a keypad or other selection mechanism, usually on the MCDU, select or dial the desired number. After selecting the function and number, the crewmember must select the proper function (telephone) on an audio panel to initiate the call. Since the MCDU and the audio panel are usually not conterminously located, the crewmember is required to divert his attention unnecessarily from device to device, thus increasing the workload on the crewmember.
  • the invention comprises a method for integrating the radiotelephony audio component with the audio panel, by providing an interface between the audio panel and the radiotelephony device, coupling the audio input of the radiotelephony mode to the audio panel, and directing the audio input of the radiotelephony mode to the interface, the interface coupling the audio input of the radiotelephony mode to the radiotelephony device.
  • FIG. 1 shows a generalized block diagram of an aircraft telephony system.
  • FIG. 2 shows a detailed block diagram of one implementation of the aircraft telephony system of the instant invention.
  • FIG. 1 shows a generalized block diagram of an aircraft telephony system 100 in accordance with one embodiment of the invention.
  • the cockpit telephony system comprises an audio panel 102 having a telephony control panel 104 as illustrated in the enlarged view.
  • An aircraft operator located within the cockpit 106 of the aircraft can initiate and control a communication session between the cockpit 106 and a communication device 108 connected to a Public Switched Telephone Network 110.
  • the audio panel 102 comprises a plurality of buttons or switches 112, 114, 116, 118, 120, and 122 for selecting the particular radio the audio of which it is desired to hear through the earphones 124 of a headset 126 worn by the pilot or a crewmember of the aircraft.
  • the headset 126 also has a microphone 128 through which the crewmember can provide audio input to the audio panel.
  • Each of the switches 112-122 selects one of the radios on board the aircraft, which may include a first communications radio (not shown) selected by switch 112 for communicating with other communications radios whether airborne, terrestrial, or satellite. Likewise, a second communications radio (not shown) may be selected by switch 114.
  • Switches 116 and 118 may select first and second navigation radios (not shown) and switch 120 may select another navigation radio such as an Automatic Direction Finder (ADF). These navigation radios may be selected so that a crewmember may listen on his headset to the audio identifier of the navigation facility to which the radio is tuned to verify that the navigation radio is, in fact, properly tuned and the navigation facility is operative.
  • Switch 122 may select a telephony communications radio whereby the crewmember may communicate through his headset with a terrestrial Public Switched Telephone Network (PSTN).
  • PSTN Public Switched Telephone Network
  • a crewmember typically in order for a crewmember to place a telephone call through a PSTN, either the crewmember must remove his headset and utilize a separate telephone handset with a separate control apparatus for, for example, dialing a desired number, or he accesses the radio link to the PSTN through a Multifunction Control and Display Unit (MCDU).
  • MCDU Multifunction Control and Display Unit
  • a crewmember To place a telephone call through a PSTN, a crewmember must select the telephone function on the MCDU and, using a keypad or other selection mechanism, usually on the MCDU, select or dial the desired number. After selecting the function and number, the crewmember must select the proper function (telephone) on an audio panel to initiate the call. Since the MCDU and the audio panel are usually not conterminously located, the crewmember is required to divert his attention unnecessarily from device to device, thus increasing the workload on the crewmember.
  • the audio panel 102 By integrating the audio of the telephony system into the audio panel 102, and incorporating a telephone keypad 104 into the audio panel, a crewmember may now use his usual communications headset 126 to provide audio input to the audio panel 102. Since the audio panel 102 also has integrated therewith a telephone keypad having a dialing mechanism and the required function keys, the audio panel may be interfaced to an audio controller 132 which converts the signals from the audio panel to the appropriate signals to drive a telephony device 134 which includes a transceiver for communicating with the PSTN 110.
  • FIG. 2 shows a block diagram of another embodiment of the invention.
  • an audio panel 202 is provided and an expansion bus 204 couples the audio panel to a cell pad 206, the function of which is to provide the necessary telephonic control functions such as dialing the phone number and initiating the telephone call.
  • the expansion bus 204 also couples the audio panel 202 to other control panels 208, such that the audio of other radios 242 may be controlled by the audio panel.
  • the audio panel itself has a series of buttons or switches 210, 212, 214, 216, and 218 for selecting one of the radios 242 the audio of which it is desired to hear through the earpieces 124 of a headset 126.
  • the headset 126 also has a microphone 128.
  • the audio panel 202 additionally has a switch 220 which is used to select the telephony system as will be discussed below.
  • a switch 220 which is used to select the telephony system as will be discussed below.
  • On the audio panel there is also a display 222 and a selection knob or switch 224 the functions of which will be explained below.
  • An audio processor 226 is coupled to the audio panel 202 by a microphone (mic) bus 228.
  • the mic bus 228 carries audio and control information between the audio panel
  • audio input to the audio panel 202 by the microphone 128 of headset 126 is carried to the audio processor 226 and then either to a selected one of the other radios 242 or to the telephony device 230 in the event that the phone switch 220 is selected.
  • a telephony device 230 is coupled to the audio processor 226 by a bus 231 which carries audio and discrete signaling such as "off hook", "ring”, etc. between the audio processor and the telephony device 230.
  • the telephony device 230 comprises interfaces to phones on the aircraft 232, such as phones used by cabin crewmembers and “flight phones " that may be used by passengers on the aircraft to place telephone calls through a terrestrial PSTN to other telephones on the PSTN network.
  • Telephony device 230 also comprises a radiotelephony transceiver to which the phones 232 are interfaced, and which, through antenna 234 or other radiating means, transmits and receives audio to and from a terrestrial PSTN 236.
  • the audio transmitted and received by the telephony transceiver may be analog or digital and may be in one of many different forms.
  • the telephony device 230 may be of several types, including SatCom (with which transmissions to and from a terrestrial system are directed through a satellite system) or flight phone systems such as Magna Star.
  • an MCDU 240 Also coupled to the audio processor 226 by means of an MAU 244 and an ASCB bus 238 is an MCDU 240, the functions of which have previously been discussed.
  • One of the functions of the MCDU/MAU pair is to store telephone identification numbers and the like to assist in placing calls through the PSTN.
  • the MCDU/MAU is capable of entering and storing a large number of telephone numbers and other data.
  • a crewmember may wish to communicate with an air traffic controller.
  • the crewmember selects the appropriate radio 242 by activating one of the switches 210, 212.
  • the audio panel directs the audio from microphone 128 over the microphone bus 228 to the appropriate radio 242 for transmission to the air traffic controller.
  • the audio from the air traffic controller is likewise passed over an audio bus 246 to the audio panel and then to the earphones 124 of headset 126. If it is desired only to monitor one of the navigation radios to confirm the radio's settings, switch 214, 216, or 218 may be activated to select the desired radio 242.
  • the audio identifier or other information from the navigation facility will be directed over the audio bus 246 to the earphone 124 of the headset 126.
  • phone switch 220 on the audio panel 202 is selected.
  • the crewmember selects the identifier of the desired phone by means of selection knob 224 or another selection mechanism such as a cell pad 206 or the like.
  • An electronic rotary switch can access a large number of phone identifiers, such as telephone numbers in a local memory. Alternatively, the numbers or identifiers may be stored only in the MCDU/MAU.
  • Display 222 on the audio panel 202 displays the selected identifier.
  • the identifier may be a series of numbers, such as telephone numbers, or may be textual, such as "Cabin” or "Rear” for phones on-board the aircraft, or "operations" for a terrestrial phone of a particular airline office.
  • the audio panel directs the control information (phone identifier) and a "send" or other signal over the mic bus 228 to the audio processor. If the actual phone number is stored only in the MCDU/MAU 240, the audio processor 226 may request the identifier from the MCDU/MAU 240.
  • the audio processor 230 through it's interfacing circuitry, converts the telephone identifier, other control information, and audio levels to signals and levels compatible with the particular telephony device in use, and passes those signals and levels over bus 231 to the telephony device 230.
  • the telephony device connects the crewmember' s headset to the appropriate phone. If the identifier relates to a telephone or other user connected to the PSTN, the control and audio from the headset 126 and the audio panel 202 is directed to the telephony transceiver that forms a part of the telephony device 230 for transmission to the PSTN 236. Likewise, audio returned from the PSTN over the radio link to the telephony transceiver is directed to the audio processor 226 and converted to levels and signals usable by the audio panel 202 over the audio bus 246. The audio panel 202 then passes the audio information to the headset 126.

Abstract

A communications system having a plurality of radio communication modes with an audio component, the audio component of the radio communication modes being controlled through an audio panel, and a radiotelephony mode with an audio component being controlled by a radiotelephony device, the audio component of the radiotelephony mode having an audio input for supplying audio to the radiotelephony device. The radiotelephony audio component is integrated with the audio panel, by providing an interface between the audio panel and the radiotelephony device, coupling the audio input of the radiotelephony mode to the audio panel, and directing the audio input of the radiotelephony mode to the interface, the interface coupling the audio input of the radiotelephony mode to the radiotelephony device.

Description

TELEPHONY CONTROL IN THE FLIGHT DECK
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Patent Application No. 60/324,035, filed September 20, 2001.
TECHNICAL FIELD
[0002] The present invention relates to an aircraft communications system, and more particularly to a telephony communications system.
BACKGROUND OF THE INVENTION
[0003] Aircraft telephony communications systems are systems that allow an aircraft crewmember to place telephone calls through a ground based telephone system such as a Public Switched Telephone Network (PSTN). Thus a crew member may place telephone calls to ground based telephone customers or mobile telephone customers similarly as a person on the ground may place a call to another terrestrial user.
[0004] In present aircraft telephony systems there exists a radio link between the aircraft and the terrestrial PSTN system. One such link may be through a SatCom digital radio system that accesses terrestrial PSTN through communications satellites. Another possible link is through a conventional Flight Phone system as is employed in many commercial aircraft today, that may have either an analog or a digital radio link to the PSTN.
[0005] In order for a crewmember to place a telephone call through the PSTN, typically either the crewmember must remove his headset and utilize a separate telephone handset with a separate control apparatus for, for example, dialing a desired number, or he accesses the radio link to the PSTN through a Multifunction Control and Display Unit (MCDU). The MCDU is a common on-board system that performs many aircraft functions including flight plan management, communications, and the like. An MCDU has a display screen, which may be a CRT, LCD, flat panel display, or other suitable display and an associated control panel consisting of keypads and switches to select the various functions performed by the unit. To place a telephone call through a PSTN, a crewmember must select the telephone function on the MCDU and, using a keypad or other selection mechanism, usually on the MCDU, select or dial the desired number. After selecting the function and number, the crewmember must select the proper function (telephone) on an audio panel to initiate the call. Since the MCDU and the audio panel are usually not conterminously located, the crewmember is required to divert his attention unnecessarily from device to device, thus increasing the workload on the crewmember.
[0006] Consequently, it would be desirable to provide a system in which all, or virtually all, audio related functions may be controlled through a single control point, such as the audio panel.
BRIEF SUMMARY OF THE INVENTION
[0007] In a communications system having a plurality of radio communication modes with an audio component, the audio component of the radio communication modes being controlled through an audio panel, and a radiotelephony mode with an audio component being controlled by a radiotelephony device, the audio component of the radiotelephony mode having an audio input for supplying audio to the radiotelephony device the invention comprises a method for integrating the radiotelephony audio component with the audio panel, by providing an interface between the audio panel and the radiotelephony device, coupling the audio input of the radiotelephony mode to the audio panel, and directing the audio input of the radiotelephony mode to the interface, the interface coupling the audio input of the radiotelephony mode to the radiotelephony device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will hereinafter be described in conjunction with the appended drawing figures, where:
[0009] FIG. 1 shows a generalized block diagram of an aircraft telephony system.
[0010] FIG. 2 shows a detailed block diagram of one implementation of the aircraft telephony system of the instant invention. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0011] The following detailed description of preferred embodiments is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention.
[0012] FIG. 1 shows a generalized block diagram of an aircraft telephony system 100 in accordance with one embodiment of the invention. The cockpit telephony system comprises an audio panel 102 having a telephony control panel 104 as illustrated in the enlarged view. An aircraft operator (not shown) located within the cockpit 106 of the aircraft can initiate and control a communication session between the cockpit 106 and a communication device 108 connected to a Public Switched Telephone Network 110.
[0013] In this embodiment of the invention, the audio panel 102 comprises a plurality of buttons or switches 112, 114, 116, 118, 120, and 122 for selecting the particular radio the audio of which it is desired to hear through the earphones 124 of a headset 126 worn by the pilot or a crewmember of the aircraft. The headset 126 also has a microphone 128 through which the crewmember can provide audio input to the audio panel. Each of the switches 112-122 selects one of the radios on board the aircraft, which may include a first communications radio (not shown) selected by switch 112 for communicating with other communications radios whether airborne, terrestrial, or satellite. Likewise, a second communications radio (not shown) may be selected by switch 114. Switches 116 and 118 may select first and second navigation radios (not shown) and switch 120 may select another navigation radio such as an Automatic Direction Finder (ADF). These navigation radios may be selected so that a crewmember may listen on his headset to the audio identifier of the navigation facility to which the radio is tuned to verify that the navigation radio is, in fact, properly tuned and the navigation facility is operative. Switch 122 may select a telephony communications radio whereby the crewmember may communicate through his headset with a terrestrial Public Switched Telephone Network (PSTN).
[0014] As previously noted, typically in order for a crewmember to place a telephone call through a PSTN, either the crewmember must remove his headset and utilize a separate telephone handset with a separate control apparatus for, for example, dialing a desired number, or he accesses the radio link to the PSTN through a Multifunction Control and Display Unit (MCDU). To place a telephone call through a PSTN, a crewmember must select the telephone function on the MCDU and, using a keypad or other selection mechanism, usually on the MCDU, select or dial the desired number. After selecting the function and number, the crewmember must select the proper function (telephone) on an audio panel to initiate the call. Since the MCDU and the audio panel are usually not conterminously located, the crewmember is required to divert his attention unnecessarily from device to device, thus increasing the workload on the crewmember.
[0015] By integrating the audio of the telephony system into the audio panel 102, and incorporating a telephone keypad 104 into the audio panel, a crewmember may now use his usual communications headset 126 to provide audio input to the audio panel 102. Since the audio panel 102 also has integrated therewith a telephone keypad having a dialing mechanism and the required function keys, the audio panel may be interfaced to an audio controller 132 which converts the signals from the audio panel to the appropriate signals to drive a telephony device 134 which includes a transceiver for communicating with the PSTN 110.
[0016] FIG. 2 shows a block diagram of another embodiment of the invention. In this case, an audio panel 202 is provided and an expansion bus 204 couples the audio panel to a cell pad 206, the function of which is to provide the necessary telephonic control functions such as dialing the phone number and initiating the telephone call. The expansion bus 204 also couples the audio panel 202 to other control panels 208, such that the audio of other radios 242 may be controlled by the audio panel. The audio panel itself has a series of buttons or switches 210, 212, 214, 216, and 218 for selecting one of the radios 242 the audio of which it is desired to hear through the earpieces 124 of a headset 126. The headset 126 also has a microphone 128.
[0017] The audio panel 202 additionally has a switch 220 which is used to select the telephony system as will be discussed below. On the audio panel there is also a display 222 and a selection knob or switch 224 the functions of which will be explained below.
[0018] An audio processor 226 is coupled to the audio panel 202 by a microphone (mic) bus 228. The mic bus 228 carries audio and control information between the audio panel
202 and the audio processor 226. For example, audio input to the audio panel 202 by the microphone 128 of headset 126 is carried to the audio processor 226 and then either to a selected one of the other radios 242 or to the telephony device 230 in the event that the phone switch 220 is selected.
[0019] A telephony device 230 is coupled to the audio processor 226 by a bus 231 which carries audio and discrete signaling such as "off hook", "ring", etc. between the audio processor and the telephony device 230. The telephony device 230 comprises interfaces to phones on the aircraft 232, such as phones used by cabin crewmembers and "flight phones " that may be used by passengers on the aircraft to place telephone calls through a terrestrial PSTN to other telephones on the PSTN network. Telephony device 230 also comprises a radiotelephony transceiver to which the phones 232 are interfaced, and which, through antenna 234 or other radiating means, transmits and receives audio to and from a terrestrial PSTN 236. Depending upon the radio modulation technique employed by the telephony transceiver and the PSTN, of course, the audio transmitted and received by the telephony transceiver may be analog or digital and may be in one of many different forms. The telephony device 230 may be of several types, including SatCom (with which transmissions to and from a terrestrial system are directed through a satellite system) or flight phone systems such as Magna Star.
[0020] Also coupled to the audio processor 226 by means of an MAU 244 and an ASCB bus 238 is an MCDU 240, the functions of which have previously been discussed. One of the functions of the MCDU/MAU pair is to store telephone identification numbers and the like to assist in placing calls through the PSTN. The MCDU/MAU is capable of entering and storing a large number of telephone numbers and other data.
[0021] In operation, a crewmember, using headset 126, may wish to communicate with an air traffic controller. The crewmember selects the appropriate radio 242 by activating one of the switches 210, 212. The audio panel directs the audio from microphone 128 over the microphone bus 228 to the appropriate radio 242 for transmission to the air traffic controller. The audio from the air traffic controller is likewise passed over an audio bus 246 to the audio panel and then to the earphones 124 of headset 126. If it is desired only to monitor one of the navigation radios to confirm the radio's settings, switch 214, 216, or 218 may be activated to select the desired radio 242. The audio identifier or other information from the navigation facility will be directed over the audio bus 246 to the earphone 124 of the headset 126.
[0022] If, however, the crewmember desires to place a telephone call to another telephone on the aircraft 232 or to a terrestrial PSTN, phone switch 220 on the audio panel 202 is selected. The crewmember then selects the identifier of the desired phone by means of selection knob 224 or another selection mechanism such as a cell pad 206 or the like. An electronic rotary switch can access a large number of phone identifiers, such as telephone numbers in a local memory. Alternatively, the numbers or identifiers may be stored only in the MCDU/MAU. Display 222 on the audio panel 202 displays the selected identifier. The identifier may be a series of numbers, such as telephone numbers, or may be textual, such as "Cabin" or "Rear" for phones on-board the aircraft, or "operations" for a terrestrial phone of a particular airline office.
[0023] When switch 220 is selected and the telephone identifier is selected, the audio panel directs the control information (phone identifier) and a "send" or other signal over the mic bus 228 to the audio processor. If the actual phone number is stored only in the MCDU/MAU 240, the audio processor 226 may request the identifier from the MCDU/MAU 240. The audio processor 230, through it's interfacing circuitry, converts the telephone identifier, other control information, and audio levels to signals and levels compatible with the particular telephony device in use, and passes those signals and levels over bus 231 to the telephony device 230. If the identifier is associated with one of the phones on the aircraft, the telephony device connects the crewmember' s headset to the appropriate phone. If the identifier relates to a telephone or other user connected to the PSTN, the control and audio from the headset 126 and the audio panel 202 is directed to the telephony transceiver that forms a part of the telephony device 230 for transmission to the PSTN 236. Likewise, audio returned from the PSTN over the radio link to the telephony transceiver is directed to the audio processor 226 and converted to levels and signals usable by the audio panel 202 over the audio bus 246. The audio panel 202 then passes the audio information to the headset 126.
[0024] Thus has been described an aircraft telephony control system wherein telephony features are combined with other radio communications feature in a single control location in order to reduce crew workload when switching from radio communication to radiotelephony. Of course, while the system has been described in terms of an aircraft implementation, the principles can be applied broadly to other similar communication systems.
[0025] While preferred exemplary embodiments have been presented in the foregoing detailed description of preferred exemplary embodiments, it should be appreciated that other variations may exist. It should also be appreciated that these preferred exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. Rather, the ensuing detailed description will provide those skilled in the art with a convenient road map for implementing a preferred embodiment of the invention. It being understood that various changes may be made in the function and arrangement of elements described in an exemplary preferred embodiment without departing from the spirit and scope of the invention as set forth in the appended claims.

Claims

1. A communication system for an aircraft comprising: a radiotelephony device comprising a radiotelephony transceiver for providing communication between a telephone in the aircraft coupled to the radiotelephony transceiver and a terrestrial Public Switched Telephone Network (PSTN), a radio communications transceiver for providing communication with other communications transceivers not located in the aircraft, an audio panel for receiving audio from the radio communications transceiver and providing audio to a headset coupled to the audio panel, an audio processor coupled to the audio panel and to the radiotelephony device for providing communication between the headset and the radiotelephony device, whereby a user of the headset may communicate through the headset to a terrestrial PSTN.
2. A communications system as set forth in claim 1 wherein the audio panel comprises means for identifying a selected telephone and identification of the selected telephone is transmitted through the audio processor to the telephony device.
3. A communications system as set forth in claim 2 wherein the audio panel further comprises a display for displaying a representation of the selected telephone.
4. A communications system as set forth in claim 2 wherein the telephony device couples the headset to the selected telephone if the selected telephone is in the aircraft, and transmits the identification of the selected telephone to the PSTN through the radiotelephony transceiver if the selected telephone is not in the aircraft.
5. A communications system as set forth in claim 1 further comprising a Multifunction Control and Display Unit (MCDU), the MCDU coupled to the audio processor and operative to provide the identification of a selected telephone to the audio processor.
6. In a communications system having a plurality if radio communication modes with an audio component, the audio component of the radio communication modes being controlled through an audio panel, and a radiotelephony mode with an audio component being controlled by a radiotelephony device, the audio component of the radiotelephony mode having an audio input for supplying audio to the radiotelephony device, a method for integrating the radiotelephony audio component with the audio panel, comprising: providing an interface between the audio panel and the radiotelephony device, coupling the audio input of the radiotelephony mode to the audio panel, directing the audio input of the radiotelephony mode to the interface, the interface coupling the audio input of the radiotelephony mode to the radiotelephony device.
7. A communications system as set forth in claim 6 wherein the audio panel comprises means for identifying a selected telephone and identification of the selected telephone is transmitted through the audio processor to the telephony device.
8. A communications system as set forth in claim 7 wherein the audio panel further comprises a display for displaying a representation of the selected telephone.
9. A communications system as set forth in claim 7 further comprising coupling the telephony device to the selected telephone if the selected telephone is in the aircraft, and transmitting the identification of the selected telephone to the PSTN through the radiotelephony transceiver if the selected telephone is not in the aircraft.
10. A communications system as set forth in claim 6 further comprising a Multifunction Control and Display Unit (MCDU), the method further comprising coupling the MCDU to the audio processor to provide the identification of a selected telephone to the audio processor.
11. In a communications system having a telephony system with an audio component and an audio processor; the audio component of the telephony system supplying audio to the audio processor, a method for integrating the telephony system with an audio panel, comprising: providing an interface between the audio panel and the audio processor, coupling the audio input of the telephony system to the audio panel, directing the audio input of the telephony system to the interface, the interface coupling the audio input of the telephony system to the audio processor.
12. In a communications system as set forth in claim 11, the telephony system further comprising a link to a Public Switched telephone Network (PSTN), the method further comprising: providing a path from the audio processor to communicate by means of radio signals with a PSTN.
PCT/US2002/029910 2001-09-20 2002-09-19 Telephony control in the flight deck WO2003026162A2 (en)

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EP02763674A EP1428330B1 (en) 2001-09-20 2002-09-19 Telephony control in the flight deck

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PCT/US2002/029909 WO2003025508A2 (en) 2001-09-20 2002-09-19 Station identification for a local area augmentation system on a visual display
PCT/US2002/029908 WO2003025905A1 (en) 2001-09-20 2002-09-19 Active noise filtering for voice communication systems
PCT/US2002/030040 WO2003026174A2 (en) 2001-09-20 2002-09-19 Digital audio system
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PCT/US2002/029908 WO2003025905A1 (en) 2001-09-20 2002-09-19 Active noise filtering for voice communication systems
PCT/US2002/030040 WO2003026174A2 (en) 2001-09-20 2002-09-19 Digital audio system
PCT/US2002/029926 WO2003025617A2 (en) 2001-09-20 2002-09-19 Annunciation of the distance to a target position in a gps landing system

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AU2002335775A1 (en) 2003-04-01
WO2003025508A3 (en) 2003-09-04
EP1427995A2 (en) 2004-06-16
EP1428354A2 (en) 2004-06-16
EP1428234B1 (en) 2010-10-27
US20030052220A1 (en) 2003-03-20
WO2003025617A3 (en) 2003-11-27
AU2002326997A1 (en) 2003-04-01
US6801158B2 (en) 2004-10-05
WO2003025617A2 (en) 2003-03-27
EP1428207B1 (en) 2007-10-24
AU2002327021A1 (en) 2003-04-01
US6950036B2 (en) 2005-09-27
WO2003026174A2 (en) 2003-03-27
US20030052800A1 (en) 2003-03-20
US20030054817A1 (en) 2003-03-20
WO2003025508A2 (en) 2003-03-27
EP1428207A1 (en) 2004-06-16
US20030052816A1 (en) 2003-03-20
DE60223156T2 (en) 2008-09-04
US20030053636A1 (en) 2003-03-20
US6659392B2 (en) 2003-12-09
WO2003025962A1 (en) 2003-03-27
US20030055519A1 (en) 2003-03-20
EP1428330A2 (en) 2004-06-16
EP1428234A1 (en) 2004-06-16
EP1428036A2 (en) 2004-06-16
WO2003026162A3 (en) 2003-05-22
WO2003025905A1 (en) 2003-03-27
DE60204333T2 (en) 2006-01-26
EP1428330B1 (en) 2005-05-25
WO2003026174A3 (en) 2003-08-28
DE60204333D1 (en) 2005-06-30

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