JPH07298331A - Reception device and data communication system - Google Patents

Abstract

PURPOSE:To facilitate resending operation by storing data which are received for the 1st time and a specification code while making them correspond to each other, and extracting and displaying the 1st data when the specification code is detected at the time of 2nd reception. CONSTITUTION:A decoder part 4 internally has an ID-ROM wherein data set individually, pager by pager, are stored, collates a received call signal, and successively receives and outputs message data to a control part 5 on the basis of the collation result. The control part 5 when detecting a sender discrimination code (recognition data), stored in a data bank in a RAM 9, being added to the received message data reads display contents specified with the discrimination code out of the RAM 9 and displays them at a display part 7. At the same time, the message data stored in a message memory 10 are read out and displayed at the display part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory function for storing message data in a receiver represented by a paging receiver.

[0002]

2. Description of the Related Art Recently, pagers are cheaper to use than car phones and mobile phones, so not only companies have them for phone calls from outside offices but also friends who are out and about. The number of cases where it is used as an easy communication tool with is rapidly increasing. As a conventional access method to a pager, there is a telephone for an individual, a company, and an operation service company, a personal computer input, an information processing company, etc. for an individual information provider.

The information created by these access means is sent to the pager service company via the public line network, and the pager service company creates and sends the send information for each page number of the pager owned by the individual or the company. It The pager includes an NP (Numeric Pager) type capable of receiving numerical information and an IP (Information Pager) type capable of receiving character information.

In these pagers, a notification signal, lighting of a display lamp, or vibration indicating that telephone contact is required is made by a call signal transmitted from a data provider with message data stored in a pager service company. The telephone number of the telephone contact, the contact name, the contact time, or the like is displayed by notifying the user of the call signal or adding a message to the calling signal and transmitting the message.

Further, in a pager having a data bank function in which standard message data and the like are stored in advance,
The sender can specify the standard message data stored in the data bank and display it on the display section of the pager on the receiving side by a predetermined calling method (data matching, abbreviated number, etc.).

[0006]

However, in a pager having such a conventional data bank function, if the sender of the pager does not receive a response after the transmission, the sender of the pager on the receiving side does not respond. Since it was necessary to specify the same fixed message again and perform the send operation, there was a problem that the send operation became complicated and troublesome, especially when sending a long message by combining the fixed messages. .

An object of the present invention is to provide a receiving device and a data communication system which reduce the operation load when retransmitting the same message.

[0008]

The invention according to claim 1 is
A receiving means for receiving the data, a storage means for storing the data received by the data receiving means for the first time, and a data specifying code for specifying the data in association with each other,
Detection means for detecting the data designation code by the data received by the receiving means for the second time, and storage in the storage means in association with the data designation code based on the data designation code detected by the detection means. It is characterized in that it comprises an extracting means for extracting the first received data and a display means for displaying based on the first received data extracted by the extracting means.

Further, in this case, as described in claim 2, it is effective to provide a receiving means for receiving the data and a data designating code designating the data when the first data is received. .

Further, in this case, as described in claim 3, time measuring means for measuring the present time, time recording means for recording the first data reception time by the time measuring means, and recording by the time recording means. It is effective to include a storage unit that stores the received first data reception time in association with the first received data as a data designating code that designates the first received data.

According to a fourth aspect of the present invention, there is provided data comprising a transmitting device for transmitting data by a radio signal and a receiving device having a display means for receiving and displaying the data transmitted by the transmitting device. In the communication system, the transmitting device transmits the data designating code input by the inputting means for inputting the data designating code for designating the transmission data, and the data designating code input by the inputting means for the first transmission In the case of transmitting the same data as the data transmitted the first time, the transmitting device transmits only the data designation code, and the receiving device receives the data, and the receiving device. A memory device that stores the data received first by the device and the data specifying code that specifies this data in association with each other. And when a data designating code designating this data is received by the receiving means during the second data reception, a detecting means for detecting only this data designating code and a data designating code detected by this detecting means Based on the extraction means for extracting the first reception data stored in the storage means in association with the data designation code, and based on the first reception data extracted by the extraction means, to the display means. And a control unit for redisplaying.

[0012]

According to the first aspect of the present invention, the data received by the data receiving means for the first time and the data designating code for designating this data are stored in the storage means in association with each other. When the data designating code is detected by the detecting means by the data received the next time, the extracting means stores the data designating code in the storing means in association with the data designating code based on the detected data designating code. The first received data is extracted and displayed by the display means based on the extracted first received data.

Therefore, on the transmitting side, when performing a transmission operation to the receiving device, it is possible to designate and display the received message previously transmitted and stored in the receiving device only by inputting the data designation code. Therefore, the operation for retransmitting the same message can be simplified.

According to a second aspect of the invention, there is provided a receiving means for receiving the data and a data designation code for designating the data when the first data is received. According to this, the time measuring means for measuring the current time, the time recording means for recording the first data reception time by the time measuring means, and the first data reception time recorded by the time recording means for the first time. By including a storage unit that stores the received data in association with the data received at the first time as a data specifying code, the transmitting side only needs to input the data transmission time data as the data specifying code. , You can specify and display the received message that was sent earlier and stored in the receiving device, further simplifying the operation when re-sending the same message. It can be.

According to the invention described in claim 4, it is constituted by a transmitting device for transmitting data by a radio signal and a receiving device having a display means for receiving and displaying the data transmitted by the transmitting device. In the data communication system according to the first aspect, in the transmitting device, the transmitting unit transmits the data specifying code input by the input unit together with the data in the first transmitting, and the transmitting unit transmits the data in the first transmitting in the second transmitting. When transmitting the same data as the data, only the data designation code is transmitted, and in the receiving device, the data first received by the receiving unit and the data designation code designating this data are stored in association with each other. Means for storing the data, and when receiving the second data by the receiving means, the data specifying code for specifying this data When only the data designation code is detected by the detection means when the code is received, the extraction means stores the data designation code in the storage means in association with the data designation code based on the detected data designation code. The first received data is extracted, and by the control means,
Based on the extracted first reception data, the display means is caused to display again.

Therefore, in the data communication system, on the transmitting side, when the transmitting operation is performed on the receiving device, only by inputting the data designating code, the receiving message designated earlier and stored in the receiving device is designated. It is possible to simplify the operation when retransmitting the same message.

[0017]

EXAMPLES Examples will be described below with reference to FIGS.

1 to 7 and 16 are views showing a first embodiment of a pager to which the receiving apparatus of the present invention is applied.

First, the structure will be described.

FIG. 1 is a block diagram of the pager 1.

In this figure, a pager 1 is composed of an antenna 2, an RF receiving section 3, a decoder section 4, a control section 5, a key input section 6, a display section 7, a ROM 8, a RAM 9, a message memory 10 and a sound producing section 11. Has been done.

The antenna 2 receives a call signal wirelessly transmitted from a pager service company or the like (not shown) and outputs it to the RF receiver 3. The RF receiving unit 3 is controlled by the intermittent signal input from the decoder unit 4, intermittently receives the ringing signal input from the antenna 2, detects and amplifies the received signal, converts the received signal into digital data, and then decodes the digital signal. Output to.

The decoder unit 4 determines whether or not the calling number of the calling signal input from the RF receiving unit 3 matches its own calling number by using its own calling number registered in advance in the built-in ID-ROM. It is judged by collating, and if they match, the signal reception of the RF receiving unit 3 is continued, and the call detection signal is output to the control unit 5. Further, the decoder unit 4 outputs the message data received subsequently to the calling signal to the control unit 5 based on the request input from the control unit 5. Further, the decoder unit 4 has an ID-ROM that stores data individually set for each pager such as address data for collating the received call signal.

The control unit 5 stores the received message data input from the decoder unit 4 based on various control programs stored in the ROM 8 in the message memory 10.
In addition to storing the data in the key input section 6, each circuit section in the pager 1 is controlled according to a control signal input from the key input section 6.

Further, the control unit 5 has a function as a detection unit, an extraction unit, and a control unit, and at the time of a reception process accompanying the reception of message data described later, the sender discrimination stored in the data bank in the received message data. When it is detected that the code is added, the display designation content designated by the sender discrimination code is read from the data bank in the RAM 9 and displayed on the display unit 7, and the message data stored in the message memory 10 is displayed. Is read out and displayed on the display unit 7.

The key input unit 6 is composed of a ten-key pad, a mode key, etc., and outputs an instruction of each key to the control unit 5. The display unit 7 is composed of a liquid crystal display panel or the like, and displays a message displayed along with the message data.

A ROM (Read Only Memory) 8 stores various control programs executed by the control unit 5, and also stores and retains a recall recognition symbol and a received message once stored in the message memory 10 of the present invention. Data such as valid time and message data, and a program executed by the control unit 5 such as display processing and storage processing method when only the sender identification code and the recall recognition symbol are first received are stored. .

A RAM (Random Access Memory) 9 has a function as a storage means, forms a memory area for temporarily storing received message data, key input data, etc. input from the control section 5, and The memory area of the data bank shown in FIG. 2 is also formed. The data bank contains
As shown in FIG. 2, as the sender identification code, for example,
As the display contents of the pager corresponding to the sender's initials, for example, the sender's name and telephone number are set and registered, and these registration contents are registered by the receiver through the key input unit 6
It can be set by key input operation from.

The message memory 10 forms a memory area for storing message data. For example, as shown in FIG. 3, a recall recognition symbol and first and second incoming calls corresponding to the recall recognition symbol. Data is stored, and the message data corresponding to the recall identification symbol is already stored as the first message data, and the data received again includes the recall identification symbol and new message data. In this case, the received message data for the first time and for the second and subsequent times is called and sequentially displayed on the display unit 7. In FIG. 3, message data is not accepted after the third time. However, if the allocation of the memory area in the message memory 10 is changed, the message data after the third time can be sequentially stored. Is.

The sound generator 11 outputs a notification sound from the speaker according to the notification sound data input from the controller 5.

The message data stored in the message memory 10 is sequentially erased from the oldest one in time and is rewritten into a new message. However, if a message with a specific code such as a recall code is added to the message, it will be saved without being erased. In this case, the old message data without the specific code will be erased with priority. Shall be done. Next, the operation will be described.

The incoming call processing when the pager 1 of the first embodiment receives the message data together with the calling will be described with reference to the flowcharts shown in FIGS. 4 and 5.

First, the pager 1 detects the arrival of a calling signal to the pager 1 transmitted from the pager service company, and starts reception processing.

Further, it is judged whether or not the calling number (not shown) matches the calling number stored in the ID-ROM of the decoder section 4, and if they match, the reception is continued. (Step S1). Furthermore, the reception data input following the call detection signal from the decoder unit 4 is checked (step S2), it is determined whether or not the sender identification code is added to this reception data, and the sender identification code is the data. It is searched whether or not it is stored in the bank (steps S3 to S5).

If there is no sender identification code, a normal calling process is performed (step S7), and a notification sound is emitted by the sounding unit 1.
Notification is made from 1 (step S12). If the received sender identification code is in the data bank, the data after the sender identification code shown in FIGS. 6A and 6B is checked (step S6), and the data after the sender identification code is re-created. It is determined whether or not there is a recognition symbol indicating a call (step S8).

If there is a recall recognition symbol, it is judged whether or not there is message data after this recall recognition symbol (step S9), there is message data, and message data similar to this message data is also message data. When the message data is not stored in the memory area of the memory 10 corresponding to this recall recognition symbol, this message data is stored in the message memory 10,
The message is stored in the memory area corresponding to the recall recognition symbol, the message data received from the memory area for the first time is sequentially read, and these messages are displayed (step S15).

Then, it is determined whether or not the sent message data (first time) is stored in the corresponding memory area of the message memory 10 corresponding to this recall recognition symbol (step S10). The message data sent first is stored in the corresponding memory area, or the received message data after the recall identification symbol is the same as the message data already stored in the corresponding memory area. If this is the case, this message data is not newly stored, and the process of recalling the already stored message data and displaying it on the display unit 7 is performed (step S11), and the alarm sound output operation is performed (step S12). , This process ends.

Therefore, when the sender sends the same message to the pager 1 again, as shown in FIG. 3, the recall recognition symbol and the message data received for the first time are stored in association with each other. As shown in FIG. 6B, the message memory 10 displays the message contents for the first time by omitting the message and transmitting only the sender identification code and the recall identification symbol.

On the other hand, in the process of step S8, when there is no recall recognition symbol, the display content corresponding to the sender discrimination code is called from the data bank of the RAM 9 and displayed on the display unit 7 (step S13), and the notification is given. A sound output operation is performed (step S12), and this processing ends. Further, in the process of step S10, if only the recall recognition symbol is detected and the message data corresponding thereto is not stored in the message memory 10, the fact that there is no message data to call is displayed on the display unit 7 (step S14). The output operation of the notification sound is performed (step S12), and this processing is ended.

As a concrete example of the pager 1 that performs the above reception processing, a detailed description will be given with reference to the schematic diagram of the paging system in FIG. 16 and the example of the message displayed on the display unit 7 in FIG.

FIG. 16 shows a pager 1 utilizing the present invention.
1 is a schematic diagram of a paging system using a telephone, a public line network 13, a center 14, a transmission base station 15, and a pager 16.

The pager 16 is the pager 1 used in the first embodiment.

First, the caller gives the owner of the pager 16 the name and contact information of the caller, for example, "Taro Yamada TEL 1234 (56) 7890" in this embodiment.
When the caller wants to send a message such as "XX Demtail", the caller uses the telephone 12 to call the pager 16, and a message as shown in FIG.
Send to.

The center 14 having received the contents transmits the calling signal data for calling the pager 16 and the message data based on this message to the transmitting base station 15, and the transmitting base station 15 sends the calling signal by a radio signal. , This message data is transmitted to the pager 16. Then, in the pager 1, the message data (... T • Y01 ○) transmitted with the data structure shown in FIG.
(Demataire), the sender identification code indicated by “T / Y” is searched from the data bank in FIG. 2, and the corresponding display content “Taro Yamada TEL123” is displayed.
4 (56) 7890 ”, and further, the message data having the contents of the recall recognition symbol“ 01 ”and“ XX Demataire ”that follow are designated as the recall recognition symbol“ 01 ”in the message memory 10 of FIG. , As message data (first time) corresponding thereto. Then, the contents stored in the data bank and the message memory 10 are displayed on the display unit 7 as shown in FIG.

When the pager 16 receives the message data as shown in FIG. 6 (a), the caller again calls the name and contact information of the caller, for example, "Taro Yamada TE in this embodiment."
L1234 (56) 7890 "and a message such as" XX Demataire ", the caller uses the telephone 12 to send the pager 16
To send a message as shown in FIG. 6B to the center 14 through the public line network 13.

The center 14 receiving the contents transmits the calling signal data for calling the pager 16 and the message data based on this message to the transmitting base station 15, and the transmitting base station 15 sends the calling signal by a radio signal. , This message data is transmitted to the pager 16. Then, the pager 16 receives the data (... T.Y01) transmitted in the data structure shown in FIG. 6B from the data bank of FIG. 2 with the sender discrimination code indicated by "T.Y". After searching, the corresponding display content "Taro Yamada TEL1234 (56) 7890" is read, and the received recall recognition symbol "01"
Then, the message memory 10 is searched, and the message data received first is read out and displayed on the display unit 7 as shown in FIG. 7B.

Therefore, since the pager 1 having the data bank function is provided with the recall function for recalling the message data received in the past, the sender can retransmit the same transmission message to the pager 1. Can use the data bank function and the recall function of the pager 1 to enter the recall identification code corresponding to the same message as its own sender identification code, and the message can be re-displayed and re-transmitted. The operation content at the time of can be simplified.

8 to 16 are diagrams showing a second embodiment of a pager to which the receiver of the present invention is applied.

First, the structure will be described.

FIG. 8 is a block diagram of the pager 20, and the same components as those of the pager 1 shown in FIG.

In this figure, the pager 1 is composed of an antenna 2, an RF receiving section 3, a decoder section 4, a control section 21, a key input section 6, a display section 7, a ROM 22, a RAM 23, a message memory 24 and a sound producing section 11. Has been done.

The control unit 21 stores the received message data input from the decoder unit 4 in the message memory 24 on the basis of various control programs stored in the ROM 22, and inputs the input instruction signal input from the key input unit 6. According to the above, each circuit unit in the pager 20 is controlled.

Further, when the control unit 21 detects that the sender identification code stored in the data bank is added to the received message data in the reception processing accompanying the reception of the message data, which will be described later, the transmission thereof is performed. The display content designated by the person identification code is read from the data bank in the RAM 23 and displayed on the display unit 7, and the message data stored in the message memory 24 is read and displayed on the display unit 7.

The ROM 22 stores various control programs executed by the control unit 21, and also includes data such as the reception time once stored in the message memory 24 of the present invention and the effective time during which the received message is stored and held. At the time of receiving the message data, a program executed by the control unit 5 such as a display process and a storage processing method when only the sender name and the reception time are first received is stored.

The RAM 23 forms a memory area for temporarily storing the received message data input from the control unit 21, and also stores the memory area of the data bank shown in FIG. As shown in FIG. 9, a bank number, a sender's name, and a telephone number are set and registered in the data bank. The contents of these registrations are input by the receiver through the key input unit 6. It can be set by operation. The bank number is information that correlates with the content stored in the message memory 24.

The message memory 24 forms a memory area for storing message data input from the control section 21, and for example, as shown in FIG. 10, individually forms an area for storing received message data for each bank number. In the bank number area, as shown in FIG. 11, the date received, the message number for ordering the message data, the reception time and the message data within an allowable range of ± 5 minutes are set.

Next, the operation will be described.

The receiving process in the pager 20 of the second embodiment will be described with reference to the flowcharts shown in FIGS.

First, the pager 20 detects the arrival of a call signal transmitted from the pager service company and starts the reception process (step S21). Further, it is determined whether or not the calling number (not shown) matches the calling number of itself stored in the ID-ROM of the decoder unit 4,
If they match, the reception is continued and the received data input following the call detection signal from the decoder unit 4 is viewed (step S22), and it is determined whether or not the sender name of this received data is added. It is searched whether or not the sender name is stored in the data bank (steps S23 to S25).

If there is no sender name, a normal calling process is performed (step S27), and a notification sound is issued from the sound producing section 11 (step S32). When the received sender name is in the data bank, the data after the sender name shown in FIG. 14B is looked at (step S26), and the date after the sender name is shown in the data after the sender name. It is determined whether or not there is data (step S28).

If there is received date data, it is judged whether or not there is message data after this received date data (step S29).
Furthermore, if message data similar to this message data is not stored in the memory area of the message memory 24 at the bank number corresponding to this sender name, this message data is stored in the message memory 24,
The corresponding bank number is stored in the memory area in association with the message number, and the message is displayed (step S34).

Next, this reception date data is followed by reception time data or message data, and the message data (first time) sent corresponding to these data corresponds to the sender name in the message memory 24. It is determined whether or not the bank number is stored in the memory area (step S30). If the corresponding message data is stored in the memory area of the message memory 24, or if the received message data after the reception date data is the same as the message data already stored in the corresponding memory area, , This message data is not newly stored, only the reception time is changed, and the stored message data is called and displayed on the display unit 7 (step S31), and an alarm sound is output. (Step S3
2) Then, this process ends.

Therefore, when the sender sends the same message to the pager 20 again, the date, message number, reception time and message of the first received data are stored as shown in FIG. As shown in FIG. 14 (b) or FIG. 14 (c), the message memory 24 in which the message contents are displayed can be displayed by omitting the message and transmitting the sender name, the received date and the message number. To be done. In addition,
In the transmission data shown in FIGS. 14B and 14C, the last four digits of the telephone number indicating the contact information of the sender name may be set instead of the sender name. There is.

On the other hand, in the process of step S28, when there is no data indicating the date of the first reception, the display contents corresponding to the sender's name are called from the data bank and displayed on the display unit 7 ( In step S33, the notification sound is output (step S3).
2) Then, this process ends. In the process of step S30, when the data indicating the reception date is detected and the corresponding message data is not stored in the memory area of the message memory 24, the display unit 7 indicates that there is no message data to call. While displaying (step S34), the output operation of the notification sound is performed (step S34).
32), the present process is terminated.

By performing the above reception processing, the pager 2
As a specific example of 0, a detailed description will be given using a schematic diagram of the paging system in FIG. 16 and an example of a message displayed on the display unit 7 in FIG. 7.

FIG. 16 shows a pager 2 using the present invention.
Shows a schematic diagram of a paging system using 0,
The description of the duplicated numbers is omitted. The pager 16 is the pager 2 used in the second embodiment.
It is 0.

First, the owner of the pager 16 is given the name and contact information of the caller, for example, "Yamada" in this embodiment.
When a caller uses the telephone 12 to send a message such as "TEL seyo",
The pager 16 is called and a message as shown in FIG. 14A is transmitted to the center 14 through the public line network 13. The center 14 receiving this content transmits the calling signal data for calling the pager 16 and the message data based on this message to the transmitting base station 15, and the transmitting base station 15 sends a calling signal and this message by a radio signal. Send data to pager 16.

Then, in the pager 16, FIG.
With the reception of the message data (... Yamada TEL Seyo) transmitted in the data structure shown in (a), this received data is displayed as shown in FIG. 15 (a) and corresponds to the sender name "Yamada". Since the bank number is "1", the memory area corresponding to the bank number "1" is set to the message memory 24 from the data bank of FIG.
Search from inside.

Then, the received date "1994-01-10", the message number "1", the reception time "20:45" and the message content "TEL seyo" are stored in association with each other in the retrieved memory area.

When the pager 16 receives the message data as shown in FIG. 14 (a), the caller again calls the name and contact information of the caller, for example, "Yamada" in this embodiment,
If the caller wants to send a message such as "XX Demataire", the caller uses the telephone 12 to call the pager 16, as shown in FIGS.
A message as shown in (c) is transmitted to the center 14 through the public line network 13. The center 14 receiving this content calls the pager 16 with calling signal data,
The message data based on this message is transmitted to the transmission base station 15, and the transmission base station 15 transmits a calling signal by radio signal and this message data to the pager 16.

Then, in the pager 16, FIG.
(B) Or the message data (... Yamada 01-101) transmitted with the data structure shown in FIG.
6789 (01-10) 20:45),
Following the sender name indicated by "Yamada" or "6789", the date data "01-1" received the first time
"0", message number "1" following this date data
Alternatively, the memory area in the message memory 24 of FIG. 11 is searched based on the reception time “20:45” to read the message data received for the first time, and the sender name is searched from the data bank in the RAM 23. The data is read out and displayed on the display unit 7 as shown in FIG.

Therefore, since the pager 16 having the data bank function is added with the function of recalling the previously received message, when the sender retransmits the same message to the pager 16, By using the data bank function and recall function of 16, the message can be re-displayed by simply entering the last 4 digits of the sender's name or telephone number and the date or time of transmission. The operation content at the time of can be simplified.

In each of the above embodiments, the sender identification code, the sender's name, or the last 4 digits of the telephone number is used as the sender identification code. However, the sender identification code is not limited to these. Needless to say, various code data can be set and used as long as the code data can be used.

[0074]

According to the first aspect of the present invention, on the transmitting side, when the transmitting operation is performed on the receiving device, only by inputting the data designation code, the data is transmitted first and stored in the receiving device. The received message can be specified and displayed, and the operation when retransmitting the same message can be simplified.

According to the second and third aspects of the present invention, on the transmitting side, only by inputting the data transmission time data as the data designation code, the reception message previously transmitted and stored in the receiving device can be received. It can be designated and displayed, and the operation when retransmitting the same message can be further simplified.

According to the invention described in claim 4, in the data communication system, the transmitting side simply inputs the data designation code when performing the transmitting operation to the receiving device.
The received message previously transmitted and stored in the receiving device can be designated and displayed, and the operation when retransmitting the same message can be simplified.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a pager of a first embodiment to which a receiving device of the present invention is applied.

FIG. 2 is a configuration diagram of a data bank stored in the RAM of FIG.

FIG. 3 is a configuration diagram of a message memory in FIG.

FIG. 4 is a flowchart of reception processing executed by the pager of the first embodiment.

FIG. 5 is a flowchart of a reception process following FIG.

FIG. 6 is a diagram showing a data structure of a transmission message according to the first embodiment.

7 is a diagram showing a display example of a display unit according to the transmission message of FIG.

FIG. 8 is a block configuration diagram of a pager of a second embodiment to which the receiver of the invention is applied.

9 is a configuration diagram of a data bank stored in the RAM of FIG.

10 is a schematic configuration diagram of the message memory of FIG.

11 is a detailed configuration diagram in the message memory of FIG.

FIG. 12 is a flowchart of reception processing executed by the pager of the second embodiment.

FIG. 13 is a flowchart of a reception process following FIG.

FIG. 14 is a diagram showing a data structure of a transmission message according to the second embodiment.

FIG. 15 is a diagram showing a display example of the display unit according to the transmission message of FIG.

FIG. 16 is a schematic diagram of a paging system to which the pagers of the first and second embodiments are applied.

[Explanation of symbols]

 1, 20 Pager 2 Antenna 3 RF receiving unit 4 Decoder unit 5, 21 Control unit 6 Key input unit 7 Display unit 8, 22 ROM 9, 23 RAM 10, 24 Message memory 11 Sounding unit

Claims (4)

[Claims] 1. A receiving means for receiving data, a storage means for storing the data received by the data receiving means for the first time and a data designating code for designating the data in association with each other, and the receiving means for storing the data. Detection means for detecting the data designation code by the second data received, and the first time stored in the storage means in association with the data designation code based on the data designation code detected by the detection means. A receiving device comprising: an extraction unit that extracts the data received by the display unit; and a display unit that displays the received data based on the first reception data extracted by the extraction unit. 2. The receiving apparatus according to claim 1, further comprising receiving means for receiving the data and a data designation code designating the data when the first data is received. 3. A time measuring means for measuring the current time, a time recording means for recording the first data reception time by the time measuring means, and a first data reception time recorded by the time recording means for the first time. The receiving device according to claim 1, further comprising: a storage unit that stores the received data as a data designating code that designates the received data in association with the first received data. 4. A data communication system comprising: a transmitting device for transmitting data by a radio signal; and a receiving device having a display means for receiving and displaying the data transmitted by the transmitting device. The device transmits the data designating code input by this input means together with the input means for inputting the data designating code designating the transmission data and the data at the time of the first transmission, and the first time at the time of the second transmission. When transmitting the same data as the data transmitted to the receiver, the transmitter includes a transmitter that transmits only the data designation code, the receiver receives the data, and the receiver receives the data for the first time. Storage means for storing the stored data and a data designating code for designating this data in association with each other; If the time data received a second time, the data specifying code specifying the data has been received by,
Detection means for detecting only the data designation code, and extraction for extracting the first received data stored in the storage means in association with the data designation code based on the data designation code detected by the detection means A data communication system comprising: means, and control means for causing the display means to re-display based on the first received data extracted by the extracting means.