CA2035777C - Pager terminal apparatus and radio pager system employing the same - Google Patents
Pager terminal apparatus and radio pager system employing the sameInfo
- Publication number
- CA2035777C CA2035777C CA002035777A CA2035777A CA2035777C CA 2035777 C CA2035777 C CA 2035777C CA 002035777 A CA002035777 A CA 002035777A CA 2035777 A CA2035777 A CA 2035777A CA 2035777 C CA2035777 C CA 2035777C
- Authority
- CA
- Canada
- Prior art keywords
- message
- pager
- signal
- specifying information
- terminal apparatus
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/222—Personal calling arrangements or devices, i.e. paging systems
- G08B5/223—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
- G08B5/224—Paging receivers with visible signalling details
- G08B5/227—Paging receivers with visible signalling details with call or message storage means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/222—Personal calling arrangements or devices, i.e. paging systems
- G08B5/223—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
- G08B5/224—Paging receivers with visible signalling details
- G08B5/229—Paging receivers with visible signalling details with other provisions not elsewhere provided for
Abstract
A radio pager system and pager terminal apparatus used in the system are disclosed. A pager signal to be transmitted includes destination information and message specifying information for specifying a message to be transmitted. The pager terminal apparatus includes a receiver for receiving an incoming pager signal, a detector for detecting that the received pager signal is a signal destined for the pager terminal apparatus itself, an extracting circuit for extracting message specifying information from the pager signal transmitted to the pager terminal apparatus itself, and message displaying apparatus responsive to the extracted message specifying information for displaying a message corresponding to it in a visually recognizable manner. The radio pager system includes the above pager terminal apparatus, a station for radio-transmitting a pager signal, and transmission terminal apparatus for supplying the destination information and the message information to the station. The data to be transmitted is not the body of the message but message specifying information, so that the amount of data to be transmitted is reduced. The communication is also kept secret.
Description
-The invention relates generally to radio pager systems and, more particularly, it relates to improvements in a radio pager system and a pager terminal apparatus used in this system, in which a registered caller accesses a pager base station over the 2ublic telephone line, znd calls a desired pager ter~i nal via the pager base station.
Description of the Related Art ~ paper system is one of the systems for calling 2 person who is absent. A radio pager system particularly gives a service of callins a persor. by radio who is 2bsent, znd transmitting a message tc him. One example is "poc~et ~ell service' provided by Nippon Telegr2ph &
Telephone Corporation (NTT) in Japan.
Fig. 1 is a typical diagram showing the configuration of 2 conventional pzger system. Referring to Fig. 1, the radio pager system includes a public telephone line 1 used by a caller, an exchange 2, a pager base station 3 for transmitting a pager signai, and a pager terminal apparatus 4, which a callee carries about, for receiving a pager signal from the pager base station 3.
. ~
The system shown in Fig. 1 operates as folLows. The registered caller accesses the pager base station 3 over the public telephone line 1. The pager base station 3 gi~es the caller instructions as to the procedure of calling in accordance with a predeter~ined program. The caller inputs a calling code assigned in advance, and stored in the pager terminal apparatus carried by the callee of concern by way of push-buttons of a telephone and the like, in 2ccordance with the given instructions.
0 The calling code is temporarily stored in the pager base station. The caller further inputs a message which he intends to transmit to the callee. The pager base station 3 radio-t-ansmits the gi~en czlling code and message in z predeter~ined communication for~2t.
The input of the mess2ge from the caller is conducted as follows. In 2 control computer of the pager base station 3, 'here are stored stand2rdized sentences to each of which a code is assigned for specifying the sentence, and a table for converting the given code to character strings of the standardlzed sentence. The caller selects a desired standard sentence referring to a table identic21 with this converting table, 2nd assigns a code corresponding to the selected standard sentence by way of push-buttons and so on. The pager base station 3 converts the inputted code to a character string in accordance with -the converting table. The base s.ation 3 further radio-transmits the message including the character strings obtained by conversion along with the assigned calling code.
~ig. 2 shows one example of a communication format.
Referring to Fig. 2, data to be transmitted includes a synchronous signal bit string "S'~NC", a calling code "ADDRESS", and a transmission message "~ESSAGE" including char2cter strings from the caller.
0 In such a radio pager system, a short calling code inputted is converted to a message at the base station, so that it is possible to cut down the amount of key manipulation by the caller. Howeve~, a pager radiowave transmitted from the base station includes data converted to char2cter strings. Therefore, in spite of the fact that there is a need to limit the zmount of data in order to keep the traffic in an appropri2te rznge for smooth communication, the amount of data transmitted is large.
As character strings of a message are transmitted, as they are, by a radiowave which anyone can pickup, it is impossible to keep a secret of the communication. The table for converting the fixed form of sentence code to character strings OL a message is stored within the computer of the pager base station. ~herefore, a large amount of wor~ is needed for making converting tables ~P~ 71 .ully corres~onding to the needs or a muLtiplicity of subscribers. Even the message frequently used between a caller and a callee needs to have the whole sentence inputted as stated above if it is not included in the S convertins table of the base station. ~hile it seems possible that this problem may be solved using individual converting table with respect to respective subscriber, it is technicaily impossible to prepare individual converting table for each subscriber in tne conventionzl pager base station.
IL each user inputs all the messages without using such a converting table, he can tr~nsmit any messages. In this case, however, not only the amount of operation by the caller is incre2sed, but also the secr^~ of the communication cannot be kept.
~ herefore, an object of the present in~ention is to provide a pager ter~inal apparatus 2nd z radio pager system allowing cutting down the amount of data transmitted and attaining the increase in the number of subscribers.
Another object of the present in~-ention is to provide a pager terminal apparatus and a radio pager system allowing cutting down the amount of data transmitted and the amount of key operation required for message ~'~
transmission. 2035777 Still another object of the invention is to provide a pager terminal apparatus and a radio pager system allowing keeping a secret of communication as well as cutting down the amount of data transmitted and the number of key operations.
A pager terminal apparatus, comprising: receiving means for receiving an incoming pager signal, said pager signal including destination information representing the destination and message specifying information for specifying a message to be transmitted to said destination;
detection means for detecting that the pager signal received by said receiving means is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal;
extracting means responsive to said detection signal for extracting said message specifying information from said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information assigned by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to a paper signal base prepared in advance in order to radio-transmit said paper signal over a predetermined signal line in accordance with a predetermined protocol.
In the pager terminal apparatus above, the receiver receives the paper signal, and the detector detects that -5a-the pager signal is a signal transmitted to itself and outputs a predetermined detection signal. The extracting circuit extracts the message specifying information from the pager signal received and supplies the same to the S message displaying apparatus in response to the detection signal. The message displaying appar2tus displays the message specified by the message specifyinq information in a visually recognizable manner in response to the message specifying information. The pager signaL employed in I0 accordance with the present invention includes message specifying information for specifying a message along with destination information, which is different from the ~ager signal employed in a conventional apparatus including destination information and a message itself. The message S specifying information includes less number of char2cters comp2red with the body of the message. Therefore, in accord2nce with the p2ger terminal apparatus, the 2mount of data to be transmitted may be cut down. In transmission as well, not the body of the message, but the message specifying information only may be inputted.
Therefore, the amount of operation by the caller may also be cut down. Further~ore, the page signal does not include the body of the message, so that the secret o~ the communication can be kept.
In accordance with another aspect of the invention, `- 2035777 a radio pager system comprising a station for transmitting a pager signal including destination information representing the destination and message information to be transmitted to said destination; transmission terminal apparatus for supplying said destination information and said message information to said station; and pager terminal apparatus for receiving said pager signal and for presenting a message based on the message information included in said received pager signal when said received pager signal is destined for said pager terminal apparatus said pager terminal apparatus comprising; receiving means for receiving an incoming pager signal; detection means for detecting that said received pager signal is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal based on said destination information included in the pager signal received by said receiving means; extracting means responsive to said detection signal for extracting message specifying information for specifying said message from said message information of said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner and wherein, 2S said transmission terminal apparatus comprises converting means for converting said message specifying information into a message specified by said message specifying 203~777 information, displaying means for displaying said message supplied by said converting means, destination information storage means for storing said destination information associated with a predetermined destination, manually operable keyboard means capable of generating a desired signal sequence, transmission signal generating means for generating a signal to be transmitted including said message specifying information designated by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means, and transmission means for transmitting said signal to be transmitted to said station over a predetermined signal line in accordance with a predetermined protocol.
This radio pager system operates as follows. The caller provides the destination information and the -7a--~035777 message infor~ation to the station, using the tr2nsmission termin21 apparatus. The station radio-transmits a pager signal including the destination information 2nd the message information provided. The radio-transmitted ~ager S signal is received by the receiver of the pager ter~inal apparatus. If the detector detects that this pager signal is destined for itself, the extracting circuit extrzcts the message specifying information from the message information of the pager signal. The message displaying ci}cuit displays the message specified by the message specifying information in a visually recognizable manner in response to the extracted messzge specifying information. The body of the message need not be necessarily included in the pager signal. If the message specifying information is included, it is possible to dispLay the message to the callee. The c211er may provide only the message specifying infor~ation to the st2~ion if the correspondence between the message specifying information and the messages have been previously specified between the c211er and the callee and included in the message displaying circuit. There is no need to provide a long mess2ge to the station, nor tc transmit the body of message from the station.
The foregoing and other objects, features, 2spects and advantages of the present invention will beccme more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a typical diagram showing the structure of a conventional radio pager system;
Fig. 2 is a typical diagram showing a communication format of a pager signal in a conventional radio pager system;
Fig. 3 is a schematic diagram showing the structure of a first preferred embodiment of the present invention;
Fig. 4 is a block diagram of a pager terminal apparatus in accordance with the first preferred embodiment of the present invention; and Fig. 5 is a block diagram of a pager terminal apparatus in accordance with a second preferred embodiment of the present invention.
Fig. 3 is a schematic diagram showing the structure of a radio pager system in accordance with a first preferred embodiment of the invention. Referring to Fig. 3, this radio pager system includes a so-called electronic pocketbook carried about by the caller. A memory card MC
may be detachably provided in the electronic pocketbook M, which stores a table including a plurality of messages predetermined between the caller and the callee, and a message code corresponding to each message. The table is hereinafter referred to as 2 "message table~'. The radio pager system further includès a pager base station P
S capable of being connected to a telephone T over a public telephone line and an exchanae L, a transmitting station S
for transmitting a pager signal supplied from the pager base station ~, and an electronic pocketbook PT carried about by the callee, having a pager receiver for receiving a pager signal. The electronic pocketbook PT carried by the callee can also be provided detachably with a memory c2rd MC in which is stored a message table identical to that of the electronic pocketbook M carried about by the caller.
The p2ger system shown in Fig. 3 operates as Collows.
The caller and the calle , as stated above, make a common message table in advznce. Both of them ha~e memory cards MC store it and carry the memor-y cards MC with them. A
table for a calling code assigned to each electronic pocketbook is also stored in the memo~Y card MC. The caller, at first, obtains a calling code or the callee by referring to the calling code table stored in the memory card MC using the electronic pocketbook M. The caller further selects the message which he intends to transmit to the callee from the message table stored in the memory 20~777 card ~C using the electronic pocketbook M. The caller obtains the message code assigned to the desired message.
The caller calls the pager base station P over the public telephone line and the exchange L, operating the telephone S T. At this time, if the electronic pocketbook ~ has an automatic calling function, the function of the electronic pocketbook M may be utilized.
The pager base station P, like in the conventional system, gives the caller an instruction to input a call number of the pager termln~l and a message code in accordance with a predetermined program. The caller, following the instruction from the pager base station P, provides a call number of the pager ter~inal i.e., the electronic pocketbook PT carried about by the callee, and a message code o~ 2 desired message to the pager base sta~ion P by ~anipulating the push-buttons of the telephone T. The pager base station P radio-transmits the call number of the electronic pocketbook PT and the given message code in a predetermined format, from the transmitting station S.
The pager signal receiver of the electronic pocketbook PT receives the pager signal radio-transmitted from the transmitting station S of the pager base station, and supplies the same to the pager terminal PT. The pager terminal PT compares the call number included in the received pager signal with the call number assigned to the pager terminal itself. When both of the numbers coincide with each other, the electronic pocketbook PT determines that the pager signal is destined for itself. In that case, the electronic pocketbook PT extracts a message code from the pager signal which it received. The pager terminal PT
then searches the message table stored in the memory card MC
attached to the pager terminal PT, using obtained message code as a key. The message having a corresponding message code is thereby retrieved from the message table. The pager terminal PT displays the retrieved message on a display such as a liquid crystal display device. Accordingly, the owner of the pager terminal PT may know the incoming call of the message for him in the pager terminal PT and the contents of the message.
In this system, the information included in the pager signal transmitted from the transmitting station S
includes a call number of the pager terminal PT carried about by the callee and a message code for specifying a message to be transmitted. In general, a message code is represented by a much smaller number of characters than the body of the corresponding message. The amount of the traffic of the signal transmitted from the transmitting station S is by far decreased compared with the case in which the ~t -12-~035777 body of the message is transmitted without using a message code. The caller may transmit a considerably long message to the callee simply by searching the message table prepared in advance, finding a desired message, and supplying a message code corresponding to the desired message to the pager base station P. It is not necessary to operate the telephone T for a long period of time in order to input a long message. The message table is prepared in the memory card ~C, not in the pager base station P.
0 Therefore, transmitting and receiving of a necessary znd sufficient message between the caller and the callee may be effected only by making a common message table in advance between the caller and the callee and preparing the same in a memory card ~C. Informa~ion transmitted as ~5 stated above are a call number and a message code only.
The body of the message is not transmitted, so that the communication is kept secret.
Fig. ~ is a bloc~ diagram of an embodiment of the pager ter~inal apparatus PT used in the radio pager system ~0 of the present invention. Referring to Fig. ~, this pager terminal apDaratus includes a pager signal re~eiver 5 for receiving a pager signal transmitted from the transmitting station S, a call number memory 7 for storing a call number assigned to this pager terminal apparatus in advance, a call number detector 6 for detecting whether .e~
-the call number stored in the call number memory 7 is included in the received pager signal which the pager signal receiver 5 supplies, a message code extracting circuit 8 responsive to the call number detector detecting that the call number stored in the call number memory 7 is included in the pager signal for extracting a message code from the received pager signal, standardized sentence code-character string converting table 9 for converting the message code extracted by the message code extracting circuit 8 to a predetermined message information, and a display 10 for displaying character strings representing the message supplied from the converting table 9.
The pager terminal apparatus further includes a control circuit 11 for controlling the operations of the call number detector 6, the message code extracting circuit 8, the standardized sentence code-character string converting table (message table) 9 and the display 10 in accordance with a program prepared in advance, an ROM
(Read-Only Memory) 13 in which a program to be executed by the control circuit 11 is stored in advance, an RAM
(Random- Access Memory) 14 which the program uses as a working region, a speaker 15 driven by the control circuit 11 for generating a beep sound representing that there has been an incoming call in the pager terminal from the transmitting station S, a printer 16 for printing the ~ -14-``- 2035777 information stored in the RAM 14 and the standardized sentence code-character string converting table 9, under the control of the control circuit 11, and a manually operable keyboard 12 for generating a desired signal sequence in response to the operation by the operator and supplying the same to the control circuit 11.
The structure of the outline of the communication format used in the radio pager system in accordance with the present invention includes: a synchronous signal bit string "SYNC" which is a special signal sent for establishing and maintaining a fixed relationship in a synchronous system such as one between the pager terminal PT and the pager base station P; a calling code "ADDRESS" representing an address for specifying a station and so on in the communication network; and a message code "MESSAGE NO." for specifying a message transmitted from the caller to the callee.
Referring to the table l, the message code and the message are prepared in advance in the form of the message table as shown in Table l. The message code is preferably a 2-digit number, and takes lO0 patterns of 0 to 99. A
message, such as shown in the right section of the table l, is assigned to each message code in advance. This message converting table is predetermined between the caller and Q~,i the callee, converted to data which can be electronically processed, and stored in the memorY card MC.
Table 1 Messaae Code Messa~e ~00 Please cive a tele~hone call to the office ~01 Please come ~ac~ to the office immediatelY
~02 Your client has been here to see YOU
O ~ -~g~ I
The radio pager syste~ and the pzger termi n~l apparatus in accordance with the invention opera~es as follows with reference to Figs. 3 to 5.
Initialization When the pager system in accordance with the present invention is used, it is necessary to make a message converting table, as shown in Table 1, having a plurality of respective message codes and corresponding messages, between the caller and the callee. Furthermore, it is necessary to convert the message converting table into data which can be electronically processed and store it in h ~
,~ , the standardized sentence code-character string converting table 9 or the pager tPrmi n~ 1 PT .
In order to create this converting table within the MC, the o~erator inputs the message converting table shown in Table 1 in the pager tPr~i n~l PT, and have the table stored in the standardized sentence code-character string converting table ~ in accordance with the command of the control circuit 11 which operates according to the program stored in advance in the ROM 13, utilizing the numeric key '0 and the alphabetic ~ey (not shown) of the keyboard 12.
During input, the data ~nputted is displayed on the display 10 for confirmation by the operator.
The standardized sentence code-character string converting table 9 needs to be made in advznce in the lS memory card MC carried abaut by the caller and the memory card MC carried about by the callee. In general, the memory cards ~C which store two identical data may be obtained by making this converting table in either one of the memory cards MC, and then copying this converting table in the other.
Operation of Transmission Suppose that the caller is to transmit a message to a person who carries a pager terminal apparatus. The caller, at first, calls the pager base station P over the telephone T and the exchange L, and inputs a call number A ~
or the callee and 2 message code corresponding to the message to be transmitted in the pager base station P in accordance with the instruction of the control computer of the pager ~ase station T. The pager base station P radio-transmits the inputted call number and the message codefrom the transmitting station S in accordance with a predetermined communication protocol. -As is apparent from the description above, thedata transmitted from the transmitting station S does not include the body of the message. Even if some other person should pick up this radio communication, all that he can obtain is the call number and the message code only, so that the body of the message cannot be obtained.
Operation of Receiving The ~ager signal receiver S of the pager t~rmi n~ 1 receives the ~ager signal transmitted from the transmitting station S, and supplies it to the c211 number detector 6 and the message code extracting circuit 8.
The call number detector 6 checks if the call number included in the received pager signal coincides with the number stored in the call number memory 7. When the call number in the pager signal coincides with the call number stored in the call number memory 7, the call number detector 6 supplies a signal indicating to the control circuit 11 the detection of a pager signal destined for itself.
The control ci-cuit 11 causes the message extracting circuit 8 to operate in response to the signal applied from the call number detector 6. The message extracting circuit 8 extracts a message code "MESSAGE NO." directly following the call number identical with the call number stored in the call number memory 7, and supplies it to the standardized sentence code-character string converting table g. The st~n~rdized sentence code-character string iO converting ta~le 9 retrieves 2 message corresponding to the message code supplied from the message code extracting circuit 8 Irom the converting table shown in Table 1 in accordance with the instruction of the control circuit 11.
The retrieved character string is displayed on the display 15 10.
The control circuit 11 zlso drives the speaker 15 in response to the signal Lrom the call number detector 6, and causes it to generate a beep sound reporting that there has been an incoming call. The callee is allowed to know that there has been an incoming call by this beep sound, see the display 10 of the pager t~r~in~l PT, and know the message displayed thereon.
In the embodiment described above, the standardized sentence code-character string converting table 9 is described as a memory which is rewritable. The invention, however, is A' not limited to this, and the converting ta~le may be prepared in advance in an ROM and the like which cannot be rewritten. The standardized sentence code-character string converting ta~le g need not be stored in the memory card MC, and it may be prepared in an R~ or an ROM
incorporated in the tPrmin~l.
Fig. 5 is a block diagram illustrating another embodiment of the pager terminal apparatus used in the radio pager system or the present invention. Referring to Fig. S, this pager termin~l apparatus includes a pager signal receiver 31 for receiving a pager signal transmitted from the transmitting station S (Fig. 3) of the pager base station P, a call number memory 33 in which the call num~er assigned to this pager tPrmi n~l in advznce is stored, a call number detector 32 for detecting if there is one which coincides with the call number stored in the call number memory 33 in the pager signal received ~y the pager signal receiver 31, a message code extracting circuit 34 responsive to the call num~er detector 32 detecting that there is included a call numbe which coincides with the call number memory 33 in the received pager signal for extracting a message code associated with the call number from the pager signal, and an IC card 35 which is a memory card where there is stored a message table for converting a message code extracted by the 2~3~777 circuit 3g to a character string representing a message speclfied by the message code.
The pager te~min~l apparatus further includes a display 36 including a liquid crystal display device and so on for displaying a message obtained by the message table of the IC card 35, a CPU (Central Processing Unit) 37 which is control means for controlling the operations of the call number detector 32, the message code extracting circuit 34, the IC card 35, and the display 36 in accordance with a program prepared in advance, a manually operable key~oard 39 for generating a desired signal sequence and supplying it to the CPU 37 in response to the operation of the operator, a speaker 41 driven by a speaker d-iver 45 for generating a beep sound corresponding to the signal applied from the CPU 37, an ROM 38 where a program which the CPU 37 e~ecutes is written in advance, an R~M 40 which the CPU 37 uses as a worXing region, and a printer 42 controlled by the CPU 37 for printing the data stored in the RA~ 40 and the IC card 35.
The pager terminal apparatus further includes a transmission buffer 43 connected to the CPU 37 for temporarily storing a call number of the callee and a message code supplied from the CPU 37, a transmission control circuit 44 for supplying the transmission data 2035~77 which has been temporarily stored in the transmission buffer 43 to the speaker driver 45 based on the comm~n~
gi~en by the operator over the keyboard 3~, thereby causing the speaker 41 to generate a beep sound corresponding to the transmission data, and an incoming call signal senerating circuit 46 connected to the CPU 37 for generating an incoming call signal to ~e given to the speaker driver g5 when there is an incoming call in this pager tPrmi n~ 1 a~paratus. The speaker 41 is acoustically coupled to a handset 47 connected to the ~ublic telephone line, and the transmission data which has been temporarily stored in the transmission buffer 43 is sent on the public telephone line over the handset 47.
The message tzble stored in the IC card 35 is identical with the above-mentioned one shown in Tzble 1.
Therefore, the detailed description thereof will not be repeated here.
The operation of this pager tPrmi n~l apparatus will be described in the following.
Initialization The initializing process in the pager tPrmin~1 apparatus of the second embodiment is the same zs the initializing process conducted in the ~ager tPrmin~l apparatus (Fig. 4) of the first embodiment. The operator makes the message table shown in Table 1 in the IC card 35 ~.
by operating the keyboard 39 in accordance with a program for message ta~le input stored in the ROM 38 and executed by the CPU 37. As stated above, the IC card 35 is detachable from the pager termin~l apparatus. The IC card 35 may be copied using a personal computer or an electronic poc~etbook and the like, and a common message table may be readily shared by a plurality of users.
Operation of Transmission When the user of the pager terminal apparatus shown in Fig. 5 transmits a message to another user, the operation below is conducted. The operator operates the keyboard 39 and causes the CPU 37 to display the call number table stored in the IC card 35 on the display 36. The operator finds the number of the desired person from the displayed call number table. The storage region prepared in the RAM 40 stores the value. Then the operator gives a necessary command for the CPU 37, by operating the keyboard 39 to cause the display 36 to display the message table stored in the IC card 35. The operator operates the keyboard 39 and obtains a message code corresponding to the desired message from the message table displayed on the display 36. The storage region prepared in advance in the RAM 40 stores the obtained value.
The call number and the message code selected and stored in the RAM 40 are displayed on the display 36 by ~'`;, the CPU 37. The message corresponding to the message code displayed is also retrieved from the message table of the IC card 35, and then displayed on the display 36. The operator confirms that the data displayed on the display 36 is the desired data, and presses a predetermined transmission start key (not shown) prepared in the keyboard 39.
The cail number and the message code which have been stored in the RAM 40 are supplied to the transmission bufIer 43 by the C~U 37, and te~porarily stored therein.
The commllnication control circuit 44 converts the transmission data stored in the transmission buffer 43 to a DMF (Dual Mode Freauency) signal in accordance with the instruction from the C~U 37, and supplies it to the 1~ spea~er driver 45. The speaker driver 45 drives the speaker 41 ln response to the signal applied from the transmission control circuit 44, and the spea~er generates a sound corresponding to the transmission data which has been stored in the transmission buffer 43. The generated sound is converted to an analog electric signal by the handset 47, and supplied to the public telephone line.
The above mentioned DM~ signal is the same as a signal generated by operating the push-buttons in a telephone having normal push-buttons.
2S On receiving the call number and the message code A~
- 2035~7~
from the pager terminal, the pager base station P radio-transmits the data which it has received in accordance with a predetermined communication protocol.
Operation of Receiving S In the pager termi n~l apparatus shown in Fig. S, the receiving section has the same structure as that of the pager t~rmin~l apparatus of the first embo~iment shown in Fig. 4. Accordingly, the detailed description of the operation thereof is not repeated here.
As stated above, in accordance with the pager termi~l appar2tus according to the second embo~im~nt, in transmittin~ a message, the selected call number, selected message code and a message corresponding to the selected message code are displayed on the display 36. ~aking of a 7 5 message to be transmitted, therefore, mzy be conducted readily and without an error. The transmission data is transmitted to the pager base station P over the speaker acoustically coupled to the handset of the telephone. It is not necessary for the operator to operate the push-buttons of the telephone, and the labor and errors of the operation are reduced compared with the case in which the operator directly operates the telephone T as in the first e.~bodiment.
Although the present invention has been described and illustrated in detail, it is clearly understood that the same is by way of illustration and exampl~ only and is not to be taken by way of limitation, the spirit and scope of the present in~ention ~eing limited only by the terms of ~he appended claims.
~'
Description of the Related Art ~ paper system is one of the systems for calling 2 person who is absent. A radio pager system particularly gives a service of callins a persor. by radio who is 2bsent, znd transmitting a message tc him. One example is "poc~et ~ell service' provided by Nippon Telegr2ph &
Telephone Corporation (NTT) in Japan.
Fig. 1 is a typical diagram showing the configuration of 2 conventional pzger system. Referring to Fig. 1, the radio pager system includes a public telephone line 1 used by a caller, an exchange 2, a pager base station 3 for transmitting a pager signai, and a pager terminal apparatus 4, which a callee carries about, for receiving a pager signal from the pager base station 3.
. ~
The system shown in Fig. 1 operates as folLows. The registered caller accesses the pager base station 3 over the public telephone line 1. The pager base station 3 gi~es the caller instructions as to the procedure of calling in accordance with a predeter~ined program. The caller inputs a calling code assigned in advance, and stored in the pager terminal apparatus carried by the callee of concern by way of push-buttons of a telephone and the like, in 2ccordance with the given instructions.
0 The calling code is temporarily stored in the pager base station. The caller further inputs a message which he intends to transmit to the callee. The pager base station 3 radio-t-ansmits the gi~en czlling code and message in z predeter~ined communication for~2t.
The input of the mess2ge from the caller is conducted as follows. In 2 control computer of the pager base station 3, 'here are stored stand2rdized sentences to each of which a code is assigned for specifying the sentence, and a table for converting the given code to character strings of the standardlzed sentence. The caller selects a desired standard sentence referring to a table identic21 with this converting table, 2nd assigns a code corresponding to the selected standard sentence by way of push-buttons and so on. The pager base station 3 converts the inputted code to a character string in accordance with -the converting table. The base s.ation 3 further radio-transmits the message including the character strings obtained by conversion along with the assigned calling code.
~ig. 2 shows one example of a communication format.
Referring to Fig. 2, data to be transmitted includes a synchronous signal bit string "S'~NC", a calling code "ADDRESS", and a transmission message "~ESSAGE" including char2cter strings from the caller.
0 In such a radio pager system, a short calling code inputted is converted to a message at the base station, so that it is possible to cut down the amount of key manipulation by the caller. Howeve~, a pager radiowave transmitted from the base station includes data converted to char2cter strings. Therefore, in spite of the fact that there is a need to limit the zmount of data in order to keep the traffic in an appropri2te rznge for smooth communication, the amount of data transmitted is large.
As character strings of a message are transmitted, as they are, by a radiowave which anyone can pickup, it is impossible to keep a secret of the communication. The table for converting the fixed form of sentence code to character strings OL a message is stored within the computer of the pager base station. ~herefore, a large amount of wor~ is needed for making converting tables ~P~ 71 .ully corres~onding to the needs or a muLtiplicity of subscribers. Even the message frequently used between a caller and a callee needs to have the whole sentence inputted as stated above if it is not included in the S convertins table of the base station. ~hile it seems possible that this problem may be solved using individual converting table with respect to respective subscriber, it is technicaily impossible to prepare individual converting table for each subscriber in tne conventionzl pager base station.
IL each user inputs all the messages without using such a converting table, he can tr~nsmit any messages. In this case, however, not only the amount of operation by the caller is incre2sed, but also the secr^~ of the communication cannot be kept.
~ herefore, an object of the present in~ention is to provide a pager ter~inal apparatus 2nd z radio pager system allowing cutting down the amount of data transmitted and attaining the increase in the number of subscribers.
Another object of the present in~-ention is to provide a pager terminal apparatus and a radio pager system allowing cutting down the amount of data transmitted and the amount of key operation required for message ~'~
transmission. 2035777 Still another object of the invention is to provide a pager terminal apparatus and a radio pager system allowing keeping a secret of communication as well as cutting down the amount of data transmitted and the number of key operations.
A pager terminal apparatus, comprising: receiving means for receiving an incoming pager signal, said pager signal including destination information representing the destination and message specifying information for specifying a message to be transmitted to said destination;
detection means for detecting that the pager signal received by said receiving means is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal;
extracting means responsive to said detection signal for extracting said message specifying information from said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information assigned by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to a paper signal base prepared in advance in order to radio-transmit said paper signal over a predetermined signal line in accordance with a predetermined protocol.
In the pager terminal apparatus above, the receiver receives the paper signal, and the detector detects that -5a-the pager signal is a signal transmitted to itself and outputs a predetermined detection signal. The extracting circuit extracts the message specifying information from the pager signal received and supplies the same to the S message displaying apparatus in response to the detection signal. The message displaying appar2tus displays the message specified by the message specifyinq information in a visually recognizable manner in response to the message specifying information. The pager signaL employed in I0 accordance with the present invention includes message specifying information for specifying a message along with destination information, which is different from the ~ager signal employed in a conventional apparatus including destination information and a message itself. The message S specifying information includes less number of char2cters comp2red with the body of the message. Therefore, in accord2nce with the p2ger terminal apparatus, the 2mount of data to be transmitted may be cut down. In transmission as well, not the body of the message, but the message specifying information only may be inputted.
Therefore, the amount of operation by the caller may also be cut down. Further~ore, the page signal does not include the body of the message, so that the secret o~ the communication can be kept.
In accordance with another aspect of the invention, `- 2035777 a radio pager system comprising a station for transmitting a pager signal including destination information representing the destination and message information to be transmitted to said destination; transmission terminal apparatus for supplying said destination information and said message information to said station; and pager terminal apparatus for receiving said pager signal and for presenting a message based on the message information included in said received pager signal when said received pager signal is destined for said pager terminal apparatus said pager terminal apparatus comprising; receiving means for receiving an incoming pager signal; detection means for detecting that said received pager signal is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal based on said destination information included in the pager signal received by said receiving means; extracting means responsive to said detection signal for extracting message specifying information for specifying said message from said message information of said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner and wherein, 2S said transmission terminal apparatus comprises converting means for converting said message specifying information into a message specified by said message specifying 203~777 information, displaying means for displaying said message supplied by said converting means, destination information storage means for storing said destination information associated with a predetermined destination, manually operable keyboard means capable of generating a desired signal sequence, transmission signal generating means for generating a signal to be transmitted including said message specifying information designated by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means, and transmission means for transmitting said signal to be transmitted to said station over a predetermined signal line in accordance with a predetermined protocol.
This radio pager system operates as follows. The caller provides the destination information and the -7a--~035777 message infor~ation to the station, using the tr2nsmission termin21 apparatus. The station radio-transmits a pager signal including the destination information 2nd the message information provided. The radio-transmitted ~ager S signal is received by the receiver of the pager ter~inal apparatus. If the detector detects that this pager signal is destined for itself, the extracting circuit extrzcts the message specifying information from the message information of the pager signal. The message displaying ci}cuit displays the message specified by the message specifying information in a visually recognizable manner in response to the extracted messzge specifying information. The body of the message need not be necessarily included in the pager signal. If the message specifying information is included, it is possible to dispLay the message to the callee. The c211er may provide only the message specifying infor~ation to the st2~ion if the correspondence between the message specifying information and the messages have been previously specified between the c211er and the callee and included in the message displaying circuit. There is no need to provide a long mess2ge to the station, nor tc transmit the body of message from the station.
The foregoing and other objects, features, 2spects and advantages of the present invention will beccme more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a typical diagram showing the structure of a conventional radio pager system;
Fig. 2 is a typical diagram showing a communication format of a pager signal in a conventional radio pager system;
Fig. 3 is a schematic diagram showing the structure of a first preferred embodiment of the present invention;
Fig. 4 is a block diagram of a pager terminal apparatus in accordance with the first preferred embodiment of the present invention; and Fig. 5 is a block diagram of a pager terminal apparatus in accordance with a second preferred embodiment of the present invention.
Fig. 3 is a schematic diagram showing the structure of a radio pager system in accordance with a first preferred embodiment of the invention. Referring to Fig. 3, this radio pager system includes a so-called electronic pocketbook carried about by the caller. A memory card MC
may be detachably provided in the electronic pocketbook M, which stores a table including a plurality of messages predetermined between the caller and the callee, and a message code corresponding to each message. The table is hereinafter referred to as 2 "message table~'. The radio pager system further includès a pager base station P
S capable of being connected to a telephone T over a public telephone line and an exchanae L, a transmitting station S
for transmitting a pager signal supplied from the pager base station ~, and an electronic pocketbook PT carried about by the callee, having a pager receiver for receiving a pager signal. The electronic pocketbook PT carried by the callee can also be provided detachably with a memory c2rd MC in which is stored a message table identical to that of the electronic pocketbook M carried about by the caller.
The p2ger system shown in Fig. 3 operates as Collows.
The caller and the calle , as stated above, make a common message table in advznce. Both of them ha~e memory cards MC store it and carry the memor-y cards MC with them. A
table for a calling code assigned to each electronic pocketbook is also stored in the memo~Y card MC. The caller, at first, obtains a calling code or the callee by referring to the calling code table stored in the memory card MC using the electronic pocketbook M. The caller further selects the message which he intends to transmit to the callee from the message table stored in the memory 20~777 card ~C using the electronic pocketbook M. The caller obtains the message code assigned to the desired message.
The caller calls the pager base station P over the public telephone line and the exchange L, operating the telephone S T. At this time, if the electronic pocketbook ~ has an automatic calling function, the function of the electronic pocketbook M may be utilized.
The pager base station P, like in the conventional system, gives the caller an instruction to input a call number of the pager termln~l and a message code in accordance with a predetermined program. The caller, following the instruction from the pager base station P, provides a call number of the pager ter~inal i.e., the electronic pocketbook PT carried about by the callee, and a message code o~ 2 desired message to the pager base sta~ion P by ~anipulating the push-buttons of the telephone T. The pager base station P radio-transmits the call number of the electronic pocketbook PT and the given message code in a predetermined format, from the transmitting station S.
The pager signal receiver of the electronic pocketbook PT receives the pager signal radio-transmitted from the transmitting station S of the pager base station, and supplies the same to the pager terminal PT. The pager terminal PT compares the call number included in the received pager signal with the call number assigned to the pager terminal itself. When both of the numbers coincide with each other, the electronic pocketbook PT determines that the pager signal is destined for itself. In that case, the electronic pocketbook PT extracts a message code from the pager signal which it received. The pager terminal PT
then searches the message table stored in the memory card MC
attached to the pager terminal PT, using obtained message code as a key. The message having a corresponding message code is thereby retrieved from the message table. The pager terminal PT displays the retrieved message on a display such as a liquid crystal display device. Accordingly, the owner of the pager terminal PT may know the incoming call of the message for him in the pager terminal PT and the contents of the message.
In this system, the information included in the pager signal transmitted from the transmitting station S
includes a call number of the pager terminal PT carried about by the callee and a message code for specifying a message to be transmitted. In general, a message code is represented by a much smaller number of characters than the body of the corresponding message. The amount of the traffic of the signal transmitted from the transmitting station S is by far decreased compared with the case in which the ~t -12-~035777 body of the message is transmitted without using a message code. The caller may transmit a considerably long message to the callee simply by searching the message table prepared in advance, finding a desired message, and supplying a message code corresponding to the desired message to the pager base station P. It is not necessary to operate the telephone T for a long period of time in order to input a long message. The message table is prepared in the memory card ~C, not in the pager base station P.
0 Therefore, transmitting and receiving of a necessary znd sufficient message between the caller and the callee may be effected only by making a common message table in advance between the caller and the callee and preparing the same in a memory card ~C. Informa~ion transmitted as ~5 stated above are a call number and a message code only.
The body of the message is not transmitted, so that the communication is kept secret.
Fig. ~ is a bloc~ diagram of an embodiment of the pager ter~inal apparatus PT used in the radio pager system ~0 of the present invention. Referring to Fig. ~, this pager terminal apDaratus includes a pager signal re~eiver 5 for receiving a pager signal transmitted from the transmitting station S, a call number memory 7 for storing a call number assigned to this pager terminal apparatus in advance, a call number detector 6 for detecting whether .e~
-the call number stored in the call number memory 7 is included in the received pager signal which the pager signal receiver 5 supplies, a message code extracting circuit 8 responsive to the call number detector detecting that the call number stored in the call number memory 7 is included in the pager signal for extracting a message code from the received pager signal, standardized sentence code-character string converting table 9 for converting the message code extracted by the message code extracting circuit 8 to a predetermined message information, and a display 10 for displaying character strings representing the message supplied from the converting table 9.
The pager terminal apparatus further includes a control circuit 11 for controlling the operations of the call number detector 6, the message code extracting circuit 8, the standardized sentence code-character string converting table (message table) 9 and the display 10 in accordance with a program prepared in advance, an ROM
(Read-Only Memory) 13 in which a program to be executed by the control circuit 11 is stored in advance, an RAM
(Random- Access Memory) 14 which the program uses as a working region, a speaker 15 driven by the control circuit 11 for generating a beep sound representing that there has been an incoming call in the pager terminal from the transmitting station S, a printer 16 for printing the ~ -14-``- 2035777 information stored in the RAM 14 and the standardized sentence code-character string converting table 9, under the control of the control circuit 11, and a manually operable keyboard 12 for generating a desired signal sequence in response to the operation by the operator and supplying the same to the control circuit 11.
The structure of the outline of the communication format used in the radio pager system in accordance with the present invention includes: a synchronous signal bit string "SYNC" which is a special signal sent for establishing and maintaining a fixed relationship in a synchronous system such as one between the pager terminal PT and the pager base station P; a calling code "ADDRESS" representing an address for specifying a station and so on in the communication network; and a message code "MESSAGE NO." for specifying a message transmitted from the caller to the callee.
Referring to the table l, the message code and the message are prepared in advance in the form of the message table as shown in Table l. The message code is preferably a 2-digit number, and takes lO0 patterns of 0 to 99. A
message, such as shown in the right section of the table l, is assigned to each message code in advance. This message converting table is predetermined between the caller and Q~,i the callee, converted to data which can be electronically processed, and stored in the memorY card MC.
Table 1 Messaae Code Messa~e ~00 Please cive a tele~hone call to the office ~01 Please come ~ac~ to the office immediatelY
~02 Your client has been here to see YOU
O ~ -~g~ I
The radio pager syste~ and the pzger termi n~l apparatus in accordance with the invention opera~es as follows with reference to Figs. 3 to 5.
Initialization When the pager system in accordance with the present invention is used, it is necessary to make a message converting table, as shown in Table 1, having a plurality of respective message codes and corresponding messages, between the caller and the callee. Furthermore, it is necessary to convert the message converting table into data which can be electronically processed and store it in h ~
,~ , the standardized sentence code-character string converting table 9 or the pager tPrmi n~ 1 PT .
In order to create this converting table within the MC, the o~erator inputs the message converting table shown in Table 1 in the pager tPr~i n~l PT, and have the table stored in the standardized sentence code-character string converting table ~ in accordance with the command of the control circuit 11 which operates according to the program stored in advance in the ROM 13, utilizing the numeric key '0 and the alphabetic ~ey (not shown) of the keyboard 12.
During input, the data ~nputted is displayed on the display 10 for confirmation by the operator.
The standardized sentence code-character string converting table 9 needs to be made in advznce in the lS memory card MC carried abaut by the caller and the memory card MC carried about by the callee. In general, the memory cards ~C which store two identical data may be obtained by making this converting table in either one of the memory cards MC, and then copying this converting table in the other.
Operation of Transmission Suppose that the caller is to transmit a message to a person who carries a pager terminal apparatus. The caller, at first, calls the pager base station P over the telephone T and the exchange L, and inputs a call number A ~
or the callee and 2 message code corresponding to the message to be transmitted in the pager base station P in accordance with the instruction of the control computer of the pager ~ase station T. The pager base station P radio-transmits the inputted call number and the message codefrom the transmitting station S in accordance with a predetermined communication protocol. -As is apparent from the description above, thedata transmitted from the transmitting station S does not include the body of the message. Even if some other person should pick up this radio communication, all that he can obtain is the call number and the message code only, so that the body of the message cannot be obtained.
Operation of Receiving The ~ager signal receiver S of the pager t~rmi n~ 1 receives the ~ager signal transmitted from the transmitting station S, and supplies it to the c211 number detector 6 and the message code extracting circuit 8.
The call number detector 6 checks if the call number included in the received pager signal coincides with the number stored in the call number memory 7. When the call number in the pager signal coincides with the call number stored in the call number memory 7, the call number detector 6 supplies a signal indicating to the control circuit 11 the detection of a pager signal destined for itself.
The control ci-cuit 11 causes the message extracting circuit 8 to operate in response to the signal applied from the call number detector 6. The message extracting circuit 8 extracts a message code "MESSAGE NO." directly following the call number identical with the call number stored in the call number memory 7, and supplies it to the standardized sentence code-character string converting table g. The st~n~rdized sentence code-character string iO converting ta~le 9 retrieves 2 message corresponding to the message code supplied from the message code extracting circuit 8 Irom the converting table shown in Table 1 in accordance with the instruction of the control circuit 11.
The retrieved character string is displayed on the display 15 10.
The control circuit 11 zlso drives the speaker 15 in response to the signal Lrom the call number detector 6, and causes it to generate a beep sound reporting that there has been an incoming call. The callee is allowed to know that there has been an incoming call by this beep sound, see the display 10 of the pager t~r~in~l PT, and know the message displayed thereon.
In the embodiment described above, the standardized sentence code-character string converting table 9 is described as a memory which is rewritable. The invention, however, is A' not limited to this, and the converting ta~le may be prepared in advance in an ROM and the like which cannot be rewritten. The standardized sentence code-character string converting ta~le g need not be stored in the memory card MC, and it may be prepared in an R~ or an ROM
incorporated in the tPrmin~l.
Fig. 5 is a block diagram illustrating another embodiment of the pager terminal apparatus used in the radio pager system or the present invention. Referring to Fig. S, this pager termin~l apparatus includes a pager signal receiver 31 for receiving a pager signal transmitted from the transmitting station S (Fig. 3) of the pager base station P, a call number memory 33 in which the call num~er assigned to this pager tPrmi n~l in advznce is stored, a call number detector 32 for detecting if there is one which coincides with the call number stored in the call number memory 33 in the pager signal received ~y the pager signal receiver 31, a message code extracting circuit 34 responsive to the call num~er detector 32 detecting that there is included a call numbe which coincides with the call number memory 33 in the received pager signal for extracting a message code associated with the call number from the pager signal, and an IC card 35 which is a memory card where there is stored a message table for converting a message code extracted by the 2~3~777 circuit 3g to a character string representing a message speclfied by the message code.
The pager te~min~l apparatus further includes a display 36 including a liquid crystal display device and so on for displaying a message obtained by the message table of the IC card 35, a CPU (Central Processing Unit) 37 which is control means for controlling the operations of the call number detector 32, the message code extracting circuit 34, the IC card 35, and the display 36 in accordance with a program prepared in advance, a manually operable key~oard 39 for generating a desired signal sequence and supplying it to the CPU 37 in response to the operation of the operator, a speaker 41 driven by a speaker d-iver 45 for generating a beep sound corresponding to the signal applied from the CPU 37, an ROM 38 where a program which the CPU 37 e~ecutes is written in advance, an R~M 40 which the CPU 37 uses as a worXing region, and a printer 42 controlled by the CPU 37 for printing the data stored in the RA~ 40 and the IC card 35.
The pager terminal apparatus further includes a transmission buffer 43 connected to the CPU 37 for temporarily storing a call number of the callee and a message code supplied from the CPU 37, a transmission control circuit 44 for supplying the transmission data 2035~77 which has been temporarily stored in the transmission buffer 43 to the speaker driver 45 based on the comm~n~
gi~en by the operator over the keyboard 3~, thereby causing the speaker 41 to generate a beep sound corresponding to the transmission data, and an incoming call signal senerating circuit 46 connected to the CPU 37 for generating an incoming call signal to ~e given to the speaker driver g5 when there is an incoming call in this pager tPrmi n~ 1 a~paratus. The speaker 41 is acoustically coupled to a handset 47 connected to the ~ublic telephone line, and the transmission data which has been temporarily stored in the transmission buffer 43 is sent on the public telephone line over the handset 47.
The message tzble stored in the IC card 35 is identical with the above-mentioned one shown in Tzble 1.
Therefore, the detailed description thereof will not be repeated here.
The operation of this pager tPrmi n~l apparatus will be described in the following.
Initialization The initializing process in the pager tPrmin~1 apparatus of the second embodiment is the same zs the initializing process conducted in the ~ager tPrmin~l apparatus (Fig. 4) of the first embodiment. The operator makes the message table shown in Table 1 in the IC card 35 ~.
by operating the keyboard 39 in accordance with a program for message ta~le input stored in the ROM 38 and executed by the CPU 37. As stated above, the IC card 35 is detachable from the pager termin~l apparatus. The IC card 35 may be copied using a personal computer or an electronic poc~etbook and the like, and a common message table may be readily shared by a plurality of users.
Operation of Transmission When the user of the pager terminal apparatus shown in Fig. 5 transmits a message to another user, the operation below is conducted. The operator operates the keyboard 39 and causes the CPU 37 to display the call number table stored in the IC card 35 on the display 36. The operator finds the number of the desired person from the displayed call number table. The storage region prepared in the RAM 40 stores the value. Then the operator gives a necessary command for the CPU 37, by operating the keyboard 39 to cause the display 36 to display the message table stored in the IC card 35. The operator operates the keyboard 39 and obtains a message code corresponding to the desired message from the message table displayed on the display 36. The storage region prepared in advance in the RAM 40 stores the obtained value.
The call number and the message code selected and stored in the RAM 40 are displayed on the display 36 by ~'`;, the CPU 37. The message corresponding to the message code displayed is also retrieved from the message table of the IC card 35, and then displayed on the display 36. The operator confirms that the data displayed on the display 36 is the desired data, and presses a predetermined transmission start key (not shown) prepared in the keyboard 39.
The cail number and the message code which have been stored in the RAM 40 are supplied to the transmission bufIer 43 by the C~U 37, and te~porarily stored therein.
The commllnication control circuit 44 converts the transmission data stored in the transmission buffer 43 to a DMF (Dual Mode Freauency) signal in accordance with the instruction from the C~U 37, and supplies it to the 1~ spea~er driver 45. The speaker driver 45 drives the speaker 41 ln response to the signal applied from the transmission control circuit 44, and the spea~er generates a sound corresponding to the transmission data which has been stored in the transmission buffer 43. The generated sound is converted to an analog electric signal by the handset 47, and supplied to the public telephone line.
The above mentioned DM~ signal is the same as a signal generated by operating the push-buttons in a telephone having normal push-buttons.
2S On receiving the call number and the message code A~
- 2035~7~
from the pager terminal, the pager base station P radio-transmits the data which it has received in accordance with a predetermined communication protocol.
Operation of Receiving S In the pager termi n~l apparatus shown in Fig. S, the receiving section has the same structure as that of the pager t~rmin~l apparatus of the first embo~iment shown in Fig. 4. Accordingly, the detailed description of the operation thereof is not repeated here.
As stated above, in accordance with the pager termi~l appar2tus according to the second embo~im~nt, in transmittin~ a message, the selected call number, selected message code and a message corresponding to the selected message code are displayed on the display 36. ~aking of a 7 5 message to be transmitted, therefore, mzy be conducted readily and without an error. The transmission data is transmitted to the pager base station P over the speaker acoustically coupled to the handset of the telephone. It is not necessary for the operator to operate the push-buttons of the telephone, and the labor and errors of the operation are reduced compared with the case in which the operator directly operates the telephone T as in the first e.~bodiment.
Although the present invention has been described and illustrated in detail, it is clearly understood that the same is by way of illustration and exampl~ only and is not to be taken by way of limitation, the spirit and scope of the present in~ention ~eing limited only by the terms of ~he appended claims.
~'
Claims (25)
1. A pager terminal apparatus, comprising:
receiving means for receiving an incoming pager signal, said pager signal including destination information representing the destination and message specifying information for specifying a message to be transmitted to said destination;
detection means for detecting that the pager signal received by said receiving means is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal;
extracting means responsive to said detection signal for extracting said message specifying information from said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner, said message displaying means comprising converting means for converting said message specifying information to a message specified by said message specifying information, and displaying means for displaying said message supplied by said converting means;
destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information assigned by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to a pager signal base prepared in advance in order to radio-transmit said pager signal over a predetermined signal line in accordance with a predetermined protocol.
receiving means for receiving an incoming pager signal, said pager signal including destination information representing the destination and message specifying information for specifying a message to be transmitted to said destination;
detection means for detecting that the pager signal received by said receiving means is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal;
extracting means responsive to said detection signal for extracting said message specifying information from said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner, said message displaying means comprising converting means for converting said message specifying information to a message specified by said message specifying information, and displaying means for displaying said message supplied by said converting means;
destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information assigned by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to a pager signal base prepared in advance in order to radio-transmit said pager signal over a predetermined signal line in accordance with a predetermined protocol.
2. The pager terminal apparatus according to claim 1, wherein said converting means comprises storage means for storing a message converting table including a plurality of pairs of said message specifying information and a message specified by said message specifying information, said message specifying information included in said message converting table being different from each other, means for locating the message specifying information which coincides with said message specifying information extracted by said extracting means within said message converting table, and means for retrieving said message associated with said located message specifying information from said storage means.
3. The pager terminal apparatus according to claim 2, wherein said storage means comprises rewritable storage means.
4. The pager terminal apparatus according to claim 1, further comprising connecting means for detachably connecting storage means with said converting means, said storage means being for storing a message converting table including a plurality of pairs of said message specifying information and a message specified by said message specifying information, said message specifying information included in said message converting table being different from each other, wherein said converting means includes means coupled to said storage means by said connecting means for locating message specifying information which coincides with said message specifying information extracted by said extracting means within said message converting table, and means connected to said storage means by said connecting means for retrieving said message associated with said located message specifying information from said storage means.
5. The pager terminal apparatus according to claim 1, wherein said predetermined signal line includes a public telephone line.
6. The pager terminal apparatus according to claim 5, wherein said transmission means includes means for converting said signal to be transmitted into a sound modulated by said transmission signal, and said transmission signal modulated into said sound is supplied to a handset of a telephone connected to said public telephone line.
7. The pager terminal apparatus according to claim 1, wherein said destination information storage means stores a plurality of said destination information.
8. The pager terminal apparatus according to claim 7, further comprising means responsive to a specific signal sequence generated by said keyboard means for selecting one of said plurality of destination information stored in said destination information storage means, and supplying the same to said transmission signal generating means.
9. The pager terminal apparatus according to claim 1, further comprising means for supplying said message specifying information assigned by said signal sequence generated by said keyboard means to said converting means, wherein the message supplied by said converting means based on said message specifying information is displayed by said displaying means.
10. The pager terminal apparatus according to claim 3, further comprising table writing means for writing said desired message converting table in said rewritable storage means.
11. The pager terminal apparatus according to claim 10, wherein said table writing means comprises:
manually operable keyboard means for generating a desired signal sequence;
means responsive to the output of said keyboard means for generating a pair of designated message specifying information and a corresponding message; and means for writing said generated pair into said converting table of said rewritable storage means.
manually operable keyboard means for generating a desired signal sequence;
means responsive to the output of said keyboard means for generating a pair of designated message specifying information and a corresponding message; and means for writing said generated pair into said converting table of said rewritable storage means.
12. The pager terminal apparatus according to claim 11, further comprising means for supplying said generated pair of message specifying information and the message to said message displaying means to display the same.
13. The pager terminal apparatus according to claim 1, further comprising means responsive to said detection signal for calling the operators attention.
14. A radio pager system comprising:
a station for transmitting a paper signal including destination information representing the destination and message information to be transmitted to said destination;
transmission terminal apparatus for supplying said destination information and said message information to said station; and pager terminal apparatus for receiving said pager signal and for presenting a message based on the message information included in said received pager signal when said received pager signal is destined for said pager terminal apparatus;
said pager terminal apparatus comprising:
receiving means for receiving an incoming pager signal;
detection means for detecting that said received pager signal is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal based on said destination information included in the pager signal received by said receiving means;
extracting means responsive to said detection signal for extracting message specifying information for specifying said message from said message information of said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner;
and wherein said transmission terminal apparatus comprises:
converting means for converting said message specifying information into a message specified by said message specifying information;
displaying means for displaying said message supplied by said converting means;
destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information designated by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to said station over a predetermined signal line in accordance with a predetermined protocol.
a station for transmitting a paper signal including destination information representing the destination and message information to be transmitted to said destination;
transmission terminal apparatus for supplying said destination information and said message information to said station; and pager terminal apparatus for receiving said pager signal and for presenting a message based on the message information included in said received pager signal when said received pager signal is destined for said pager terminal apparatus;
said pager terminal apparatus comprising:
receiving means for receiving an incoming pager signal;
detection means for detecting that said received pager signal is a signal transmitted to said pager terminal apparatus, and supplying a predetermined detection signal based on said destination information included in the pager signal received by said receiving means;
extracting means responsive to said detection signal for extracting message specifying information for specifying said message from said message information of said pager signal received by said receiving means; and message displaying means responsive to said message specifying information extracted by said extracting means for displaying the message specified by said message specifying information in a visually recognizable manner;
and wherein said transmission terminal apparatus comprises:
converting means for converting said message specifying information into a message specified by said message specifying information;
displaying means for displaying said message supplied by said converting means;
destination information storage means for storing said destination information associated with a predetermined destination;
manually operable keyboard means capable of generating a desired signal sequence;
transmission signal generating means for generating a signal to be transmitted including said message specifying information designated by said signal sequence generated by said keyboard means and said destination information stored in said destination information storage means; and transmission means for transmitting said signal to be transmitted to said station over a predetermined signal line in accordance with a predetermined protocol.
15. The radio pager system according to claim 14, wherein said converting means of said pager terminal apparatus comprises storage means for storing a message converting table including a plurality of pairs of said message specifying information and the message specified by said message specifying information, said message specifying information included in said message converting table being different from each other, means for locating message specifying information which coincides with said message specifying information extracted by said extracting means within said message converting table, and means for retrieving said message associated with said located message specifying information from said storage means.
16. The radio pager system according to claim 15, wherein said storage means comprises rewritable storage means.
17. The radio pager system according to claim 14, wherein said pager terminal apparatus further comprises connecting means for detachably connecting a storage means for storing a message converting table including a plurality of pairs of said message specifying information and the message specified by said message specifying information which are associated with each other in advance, with said converting means, said message specifying information included in said message converting table being different from each other, and said converting means comprises means connected to said storage means by said connecting means for locating message specifying information which coincides with said message specifying information extracted by said extracting means, within said message converting table, and means connected to said storage means by said connecting means for retrieving said message associated with said located message specifying information from said storage means.
18. The radio pager system according to claim 14, wherein said predetermined signal line comprises a public telephone line.
19. The radio pager system according to claim 18, wherein said transmission means of said transmission terminal apparatus comprises means for converting said signal to be transmitted into a sound modulated by said signal to be transmitted, and said signal to be transmitted converted into said sound is supplied to a handset of a telephone connected to said public telephone line.
20. The radio pager system according to claim 14, wherein said destination information storage means stores a plurality of said destination information.
21. The radio pager system according to claim 20, wherein said transmission terminal apparatus further comprises means responsive to a specific signal sequence generated by said keyboard means for selecting one of said destination information stored in said destination information storage means and supplying the same to said transmission signal generating means.
22. The radio pager system according to claim 14, wherein said transmission terminal apparatus further comprises means for supplying said message specifying information designated by the signal sequence generated by said keyboard means, to said converting means, and the message supplied by said converting means based on said message specifying information is displayed by said displaying means.
23. The radio pager system according to claim 16, wherein said pager terminal apparatus further comprises table writing means for writing said desired message converting table into said rewritable storage means.
24. The radio pager system according to claim 23, wherein said table writing means of said pager terminal apparatus comprises:
manually operable keyboard means for generating a desired signal sequence;
means responsive to the signal sequence supplied by said keyboard means for generating a pair of assigned message specifying information and a message; and means for writing said generated pair into said converting table of said rewritable storage means.
manually operable keyboard means for generating a desired signal sequence;
means responsive to the signal sequence supplied by said keyboard means for generating a pair of assigned message specifying information and a message; and means for writing said generated pair into said converting table of said rewritable storage means.
25. The radio pager system according to claim 24, wherein said pager terminal apparatus further comprises means for supplying said generated pair of the message specifying information and the message to said displaying means to display the same.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-28684 | 1990-02-07 | ||
| JP2028684A JPH0834624B2 (en) | 1990-02-07 | 1990-02-07 | Pager system |
| JP2028686A JPH0834626B2 (en) | 1990-02-07 | 1990-02-07 | Electronic terminal |
| JP2028685A JPH0834625B2 (en) | 1990-02-07 | 1990-02-07 | Pager terminal equipment |
| JP2-28686 | 1990-02-07 | ||
| JP2-28685 | 1990-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2035777A1 CA2035777A1 (en) | 1991-08-08 |
| CA2035777C true CA2035777C (en) | 1996-04-09 |
Family
ID=27286282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002035777A Expired - Fee Related CA2035777C (en) | 1990-02-07 | 1991-02-06 | Pager terminal apparatus and radio pager system employing the same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5257307A (en) |
| EP (1) | EP0441385B1 (en) |
| CA (1) | CA2035777C (en) |
| DE (1) | DE69126451T2 (en) |
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-
1991
- 1991-02-04 US US07/650,094 patent/US5257307A/en not_active Expired - Lifetime
- 1991-02-06 CA CA002035777A patent/CA2035777C/en not_active Expired - Fee Related
- 1991-02-07 EP EP91101709A patent/EP0441385B1/en not_active Expired - Lifetime
- 1991-02-07 DE DE69126451T patent/DE69126451T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0441385A1 (en) | 1991-08-14 |
| EP0441385B1 (en) | 1997-06-11 |
| DE69126451D1 (en) | 1997-07-17 |
| US5257307A (en) | 1993-10-26 |
| DE69126451T2 (en) | 1998-01-22 |
| CA2035777A1 (en) | 1991-08-08 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |