JP3858380B2 - Data communication system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a data communication system for transmitting and receiving data between a plurality of data communication terminals.
[0002]
[Prior art]
A communication system represented by a paging system today includes a data receiving terminal such as a pager, a service network for performing data communication, and a specific data receiving terminal connected to the service network by a radio signal to transmit message data. A central control station (hereinafter referred to as a center) is provided to perform data communication in both directions via the center and the service network.
[0003]
In recent years, some of these data receiving terminals have a data transmission function that converts messages created on the terminal body into dial sounds (or signals) and transmits data to the center via the nearest public telephone. Although it is simple, it functions as a data communication terminal.
[0004]
In such a data communication method using a data communication system using radio signals, for example, a message (hereinafter referred to as an answer request message) requesting an answer is transmitted from the data communication terminal on the transmission side to the data communication terminal on the reception side. In this case, the reply request message can be freely operated (deleted, edited, etc.) by the operator of the transmitting data communication terminal after the transmission of this data.
[0005]
[Problems to be solved by the invention]
However, the function as described above may delete or change the answer request message to be answered by the operation of the sending operator even if the answer message from the data communication terminal on the receiving side is not received. there were. In this way, if the reply request message is deleted or changed, even if the reply message is received at the data communication terminal on the sending side, the reply request message corresponding to the reply message is lost and the reply request is received. Since the response cannot be associated with the response, the transmission / reception of the response request message is wasted and the utility value of bidirectional data communication is reduced.
[0006]
  An object of the present invention is made in view of the above-described problems, and it is possible to enhance data protection so that correspondence between reply request message data and reply message data can be taken, and improve the utility value of bidirectional data communication. It is to provide a possible data communication system.
[0007]
[Means for Solving the Problems]
  BookinventionData communication systemsIs a data communication that performs two-way wireless data communication between at least two data communication terminalssystemInSaidData communication terminal,Message requesting an answerAnd the information that prohibits deletion of this messageRememberStorage means;To destination data communication terminalStored in the storage meansSend a message requesting an answerTransmitting means for receiving data, determining means for determining whether the received data is a reply message for a reply requesting a reply stored in the storage means, and a reply message by the judging means If it is determined that the message is deleted, a request for deletion of the message requesting the answer stored in the storage means is made, and the deletion prohibition state is set according to information for prohibiting deletion corresponding to the response request message of the deletion request. Change means for changing the information prohibiting the deletion to the information enabling the deletion when the deletion request is made again.It is characterized by that.
In the above-described data communication system according to the present invention, the determination means is stored in the communication management means for storing the source name of the message, the destination name and the identification information in association with each other, and stored in the communication management means. Collation means for collating whether or not there is identification information corresponding to the transmission source name included in the received data in the identification information corresponding to the transmission destination name.
Furthermore, in the above-described data communication system according to the present invention, when data is received, it is notified for a certain period of time, a notification means that can be forcibly stopped during the notification, and the determination means determines that it is a reply message, and Forcibly changing means for changing information prohibiting deletion stored in association with the message requesting the reply in the storage means to information enabling deletion when the notification means is forcibly stopped within a predetermined time And may further include
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
[0026]
(First embodiment)
FIG. 1 is a block diagram showing an embodiment of a data communication system according to the present invention. The data communication system 100 includes, for example, a pager 1 (for example, pagers 1A and 1B), a public line network 2, a center 3, a transmission base station 4, It is composed of receiving base stations 5 and terminals 6 such as a push-phone telephone connected to the public network 2 and a computer with a modem. The public line network 2, the transmission base station 4, the reception base station 5, and the public telephone 6 ... constitute a service network.
[0027]
Each pager 1... Has a transmission function capable of transmitting directly by radio, and details are shown in FIGS. The public line network 2 connects the receiving base stations 5 on the ring, and connects the center 3 and the transmitting base station 4 to the ring. The center 3 is a central control station of the data communication system, and when there is a data transmission request from the public telephone 6 connected to the public line network 2 or the pager 1 (for example, pager 1A) in the cell of the data communication system 100. The caller pager 1 (for example, pager 1B) has a function of calling the transmission base station 4 wirelessly and transmitting data to the pager 1B.
[0028]
The transmission base station 4 wirelessly transmits the data transmitted from the center 3 to the pager 1. The receiving base station 5 converts the wireless transmission data (information data such as its own call number, call number of the data transmission destination, and message data) received from the pager 1 into dial data and transmits it to the center 3.
[0029]
For example, when the data communication system 100 transmits a message to the pager 1A to 1B, the data communication system 100 issues a response request to the message, and the pager 1B transmits the response message to 1A in response to the response request instruction. Is.
[0030]
Next, the pager will be described in detail. FIG. 2 is a top view showing an example of the external shape of the pager 1, and FIG. 3 is a block diagram showing an example of the internal configuration of the pager 1. An operation surface 1a is provided on the upper surface of the pager 1 shown in FIG. In the operation surface 1a, an LCD display unit 12 using, for example, an LCD (liquid crystal display element) is provided on the upper stage, and a liquid crystal keyboard 131 for displaying a keyboard arrangement capable of data input by a touch screen system on the lower stage, on the right side. The screen is provided with a transmission / reception message read (hereinafter referred to as RTMR) mode key 132, a transmission (hereinafter referred to as TM) mode key 133, and a cursor key 134, and slides on the right side of the pager 1 body. A power switch 135 is provided as a return key when inputting characters by turning on and pressing the power.
[0031]
The input pen 136 is an input device that taps and presses the keyboard 131. The input pen 136 taps a desired character on the liquid crystal keyboard 131 to input characters and key layout conversion. Reference numerals 1311, 1312, and 1313 denote liquid crystal keys for designating a character input mode displayed on the liquid crystal keyboard 131. When “c” is selected, an uppercase character input mode is selected, “N” is a number input mode, and “a” is a lowercase character input mode. Is specified. Accordingly, when the liquid crystal key 1312 is tapped using the input pen 136, the liquid crystal keyboard 131 is changed to the numeric input mode as shown in FIG. 2A, and when the liquid crystal key 1311 is tapped, the liquid crystal keyboard 131 is changed as shown in FIG. Changes to a capital letter input mode like 131 '. When the “Kana” key indicated by 1314 is tapped in the state of the liquid crystal keyboard 131 ′ (FIG. 2B), the input alphabet data is converted to Kana. Further, a light emitting diode (hereinafter referred to as LED) 14 is disposed at the upper end of the operation surface 1a.
[0032]
In the above configuration, the RTMR mode key 132 is a key for operating when the transmission / reception message data stored in the data memory RTD is read, and the TM mode key 133 is the transmission data stored in the transmission data memory TD. This is a key for reading and transmitting message data. The cursor key 134 is a key for operating when moving the cursor position on the display screen of the LCD display 12. Note that the liquid crystal keyboard 131, the RTMR mode key 132, the TM mode key 133, and the cursor key 134 constitute the key input unit 13.
[0033]
The LCD display 12 has a function of displaying an image such as a character or a figure in accordance with each key operation and a cursor to be moved in accordance with an operation of the cursor key 134. The LED 14 has a function of turning on (or blinking) an incoming call such as a message.
[0034]
The pager 1 includes, for example, an antenna 15, a transmission / reception changeover switch 16, an RF reception unit 17, an ID-ROM 19, a decoder unit 18, a control unit 20, an encoder unit 21, a transmission unit 22, a ROM 23, and a detection unit 24. , A RAM 25 and a display buffer 26.
[0035]
The antenna 15 receives a modulated wave (address data, message data, etc.) wirelessly transmitted from the transmission base station 4 to the pager 1 and also receives a modulated wave (own call number data, data transmission destination) from the reception base station 5. ) And wirelessly transmits the data by being modulated, and is connected to the transmission / reception selector switch 16. The transmission / reception changeover switch 16 is a circuit for switching transmission / reception according to the control of the control unit 20, and is connected to the RF reception unit 17 and the transmission unit 22.
[0036]
The RF receiver 17 is intermittently driven according to the transmission timing of the self-frame periodically transmitted so that the data set in the frame data can be received according to the control of the decoder 18, and the signal received by the antenna 15. Is detected and demodulated, restored to digital data, and the digital data is output to the decoder unit 18. The ID-ROM 19 is a frame number indicating the address data set in the pager 1 and the intermittent reception timing. It is a memory for registering ID information such as data. The decoder unit 18 collates the address data decoded into digital data by the RF receiver unit 17 and the address data registered in the ID-ROM 19 and outputs a match signal to the control unit 20 when they match. Thus, the RF receiving unit 17 has a function of controlling the reception operation to be continued.
[0037]
The ROM 23 stores various programs for operating the control unit 20 and includes a character generator ROM unit for generating a character image (dot data) based on the character code. The RAM 25 has a memory area for storing a work area when the control unit 20 operates, a data bank memory DB described later, a data memory RTD (received data memory RD, transmission data memory TD) described later, and the like.
[0038]
Here, the RAM 25 will be described in detail. 4 is a diagram showing a main memory configuration of the RAM 4, and FIGS. 5, 6, and 7 are diagrams showing the memory configurations of the data bank memory DB, the transmission data memory TD, and the reception data memory RD allocated to the RAM 4, respectively. .
[0039]
As shown in FIG. 5, the data bank memory DB has an ID No. Are divided into an area 51 for storing name data displayed on the LCD display, and an area 53 for storing call number data actually transmitted by radio. The name data and the call number data are stored in correspondence with each other. For example, ID No. 1 (area 51) corresponds to name data “AA” (area 52), and the call number is “# 1 (dial data)” (area 53).
[0040]
As shown in FIG. 6, the transmission data memory TD has an address No. for storage management. Area 61 for storing data, area 62 for storing message data to be transmitted or transmitted, and an ID No. corresponding to the call number data of the transmission destination of this message. , And an answer request flag area 64 that sets whether or not this message data designates an answer request is turned on / off. Message data and ID No. corresponding to the data. If this message data is answer request message data, an answer request flag is set. This reply request flag prohibits deletion of reply request message data once transmitted corresponding to the on "1" state.
[0041]
TMSG1, 2, 3,... The message data stored corresponding to 1, 2, 3,. For example, address No. The message data stored and managed in TMSG1 and stored in TMSG1 is the response request message data because the response request flag is set to “1”, and deletion is prohibited. However, the address No. 2 and no. The message data TMSG2 and 3 in FIG. 3 are message data with no response request because the response request flag is set to “0”. The answer request flag (area 64) can be turned on when the name data is included in the message data to be transmitted.
[0042]
As shown in FIG. 7, the incoming data memory RD has an address number for storage management. Area 71 for storing data, area 72 for storing incoming message data, and the ID No. of the source pager that transmitted the message data. , And an answer flag area 74 that is set by judging whether the reply message data for the reply request message data transmitted in advance or the regular message data is received. Incoming message data and source ID No. corresponding to the data. And if the received message data is an answer message, an answer flag is set. When the answer flag is set to “1”, name data included in the received answer message is searched in the transmission message memory TD, and the ID No. corresponding to the name data is further searched. Is read from the data bank DB and the transmission destination ID No. of the response request message data transmitted in the past is read. If YES, the transmission result reply request flag is reset from ON “1” to OFF “0”. As a result, the ID No. The transmitted message (answer request message) data corresponding to is released from the deletion prohibition state and can be deleted.
[0043]
RMSG1, 2, 3... This is the incoming message data itself corresponding to 1, 2, 3,. For example, address No. The message data RMSG1 corresponding to 1 is response message data corresponding to the response request message data stored in the transmission data memory TD since the response flag “1” is set. In addition, the address No. 2 and no. Since the message data RMSG2 and 3 corresponding to each of 3 are set to the response flag “0”, it indicates that the message data is normal message data, not response message data. This answer flag (area 74) is set to ON when the name data of the transmission source is included in the received message data.
[0044]
The control unit 20 is a circuit that controls the operation of the entire pager 1 according to various programs stored in the ROM 23 described later. For example, the control unit 20 is controlled by switching control of the transmission / reception selector switch 16 for transmission / reception of message data, or by operating the key input unit 13. Screen display control of the LCD display unit 12 according to an instruction (key signal) to be performed, control of lighting (or blinking) of the LED 14 at the time of reception of address data, message data, etc., memory access control of the RAM 25, reception data in the incoming processing Perform processing such as error correction.
[0045]
Further, the control unit 20 is provided with a reception buffer 201 connected to the output of the decoder unit 18, a transmission buffer 202 connected to the input of the encoder unit 21, and a flag setting circuit 203, and has a built-in timer. is doing. The reception buffer 201 is a memory that temporarily stores message data decoded by the decoder unit 18. The transmission buffer 202 is a memory that temporarily stores transmission data to be output to the encoder unit 21. The detection unit 24 detects name data from the transmission data stored in the area 62 of the transmission data memory TD or the reception data stored in the area 72 of the reception data memory RD, and notifies the flag setting circuit 203 of the name data. It is. The flag setting circuit 203 has an ID No. set by the detection unit 24 to itself. If this is transmission data, the response request flag (area 64) of the transmission data memory TD is set to ON, and the response request message data is handled by the detection unit 24. IDNo. When it is notified that the same name data as the name data corresponding to is detected, if this is received data, the answer flag (area 74) of the received data memory RD is set to ON.
[0046]
The encoder unit 21 has a function of encoding the transmission data received from the control unit 20 by frequency modulation and outputting the encoded transmission data to the transmission unit 22. The transmission unit 22 has a function of amplifying the transmission data received from the encoder unit 21 and outputting it to the antenna 15 via the transmission / reception selector switch 16.
[0047]
Next, the operation of the data communication system 100 will be described.
[0048]
In the transmission process, for example, an answer request message data is transmitted from the pager 1A to the pager 1B, for example, in advance. In the incoming process, the pager 1B to the pager corresponds to the transmitted answer request message. An example will be described in which reply message data is received by 1A. Further, in the message reading process, an explanation will be given by taking as an example the display of the response message data transmitted from the pager 1B to the pager 1A and the deletion of the response request message data corresponding to the response message data. FIG. 8 is a flowchart for explaining the transmission process of the pager 1A, and FIGS. 9 and 10 are diagrams showing display examples during the transmission process according to the flow shown in FIG. FIG. 11 is a flowchart for explaining the incoming process of the pager 1A, and FIGS. 12 and 13 are diagrams showing a display example during the incoming process according to the flow shown in FIG. FIG. 14 is a flowchart for explaining message data reading and deleting processing on the pager 1A side, and FIGS. 15 to 17 are diagrams showing display examples at the time of reading and deleting message data of messages according to the flow shown in FIG. is there.
[0049]
As a specific example of the transmission process, from pager 1A (owner A.A) to pager 1B (owner BB),
“I want to take time after 7 o'clock tonight. AA”
The response request message data created by operating the keyboard 131 in advance and stored in the transmission data memory TD is transmitted. (An answer request flag (area 64) is set in a transmission mode to be described later.) This answer request message data is, for example, an address No. in the transmission data memory TD shown in FIG. 1 in the memory area corresponding to No.1. Stored in correspondence with (2). The answer request message data includes name data “AA (display contents)” indicating the transmission source of the data. This name data “AA” is stored in the data bank memory DB possessed by the destination pager 1B as shown in FIG. The name data in the transmission and reception data is searched for ID No. Can be identified.
[0050]
In the pager 1A, when the control unit 20 detects that the transmission mode key 133 of the key input unit 13 is pressed and the transmission mode is selected, the control unit 20 shifts the process to the transmission mode (step S1). On the other hand, when the read mode is selected by pressing the read mode key 132 (step S11), the process proceeds to step S12 and enters the read mode according to the flowchart shown in FIG. As for the reception mode, although not shown, the self frame No. Since the incoming call signal is detected from the reception of the incoming call, the incoming call process according to the flowchart shown in FIG.
[0051]
In the transmission mode, first, a message based on the message data stored in the transmission data memory TD and the reception data memory RD is displayed on the LCD display unit 12 as shown in FIG. Owner A. A moves the cursor on these messages displayed on the LCD display unit 12 by operating the up and down arrow portions of the cursor key 134, and among these, the arrow indicating the right of the cursor key 134 at the desired message position Operate (press) the part to select it. Although not shown in the flowchart of FIG. 8, in order to cancel the selected message, the arrow portion indicating the left of the cursor key 134 is operated (pressed). The control unit 20 detects a signal for operating each arrow portion from the operation of the cursor key 134, moves the cursor on the LCD display unit 12 and switches the screen, and operates the arrow portion indicating the right of the cursor key 134 ( The message at the selected position is highlighted as shown by a and recognized as a transmission message. Thereafter, as shown in FIG. 10, the transmission message (indicated by a ') selected in step S3 is displayed on the LCD display unit 12 (steps S2 and S3).
[0052]
Next, the address No. storing the transmission message data corresponding to the selected transmission message is displayed. The flag state of the answer request flag (area 64) corresponding to is determined (step S4). For example, when the transmission message data TMSG1 is selected, the address No. storing the transmission message data TMSG1 is displayed. The flag state of the answer request flag corresponding to 1 is determined. Since the response request flag (area 64) corresponding to the transmission message data TMSG1 has already been set to “1” in the transmission data memory TD, the process proceeds to step S7. In step S4, for example, when the response request flag is in a reset (“0”) state as in the case of transmission message data TMSG2 and TMSG3, the process proceeds to step S5, and the presence of own name data exists. Checked. If the own name data exists, it is determined that the transmission data is reply request message data, and the reply request flag is set to “1” (step S6). When this answer request flag is set to “1”, the answer request message data is treated as prohibition of deletion until it is reset to “0” thereafter. That is, for the response request message data that has been transmitted once, the corresponding response request flag is set to “1” like the transmission message data TMSG1 until the response message data is received.
[0053]
In the next step S7, destination information (name, call number) is designated by a key input operation on the liquid crystal keyboard 131 (or 131 '). In this key input operation, the input pen 136 is used. Owner A. A, for example, inputs “* 4 * 42” while changing the keyboard layout with the liquid crystal keys 1311 to 1313. In accordance with this key input “* 4 * 42”, the control unit 20 reads the ID No. from the data memory bank DB. The name data “BB” and the call number data “# 2” corresponding to 2 are read out, on the LCD display unit 12 based on these data, as shown in FIG.
“BB / ID No.2”
The character of is displayed. Here, “BB” is the name of the operator of the transmission destination, and “ID No. 2” is the ID No. of the transmission destination. Respectively.
[0054]
Thus, after the transmission destination is specified in step S7, the specified name data, call number data “# 2”, and answer request message data are stored in the transmission buffer 202 (step S8).
[0055]
Further, in the above-described step S3, along with the selection of the transmission message, along with the key input screen of the transmission destination, as shown in FIG.
“Yes / No”
Is displayed. The Yes / No selection instruction is valid after the pager 1B as the transmission destination in step S7 is designated. After the designation of the transmission destination, when execution (Yes) is selected by operating the cursor key 134, the transmission data stored in the temporary transmission buffer 202 is output. At this time, the transmission data output from the pager 1A is received by the receiving base station shown in FIG. 1 and transmitted to the center 3 via the public line network 2, but the transmission data is not output all at once. First, the center 3 receives the call number data of its own and the call number data of the transmission destination, and determines whether or not there is a subscriber corresponding to the call number data received by the center 3, so that the subscriber exists. Then, the data transmission permission is transmitted to the pager 1A via the transmission base station 4. Then, by detecting the reception of this transmission permission, it is transmitted from the pager 1A to the pager 1B (steps S9 and S10). On the other hand, when “No” (non-execution) is selected by operating the cursor key 134, the transmission process is canceled and ends.
[0056]
When the response message data is received from the pager 1B in response to the response request message data, the pager 1A executes the next incoming processing (see FIG. 11). Therefore, the incoming call processing will be described below. The pager 1A always accepts incoming calls from its own message data by intermittent reception as usual (step S21). The transmission data transmitted from the pager 1B is taken into the pager 1A. At that time, it is determined whether or not the incoming address data is destined for the pager 1A by collating with the information such as the address data registered in the ID-ROM 19 in the decoder unit 18. As a result, if it is confirmed in step S22 that it is addressed to the pager 1A, the received data is stored in the temporary reception buffer 202 (step S23).
[0057]
Next, the control unit 20 searches the received data stored in the reception buffer 201 for name data of the transmission source of this data (step S24). If the name data is detected (step S25), it is determined that the answer message data for the answer request message data has arrived. First, the ID No. corresponding to the name data is retrieved from the data bank memory DB. Is read out.
[0058]
For example, when answer message data from the pager 1B is received, the name data of the transmission source is detected from the received data (answer message data) stored in the reception buffer 202, and the ID No. corresponding to this name data is detected. Is retrieved from the data bank memory DB. Since the answer message data includes name data “BB”, the sender of the answer message data is the owner B.B of the pager 1B. B. Based on this name data “BB”, the transmission source ID No. 2 is detected.
[0059]
Further, the transmission source ID No. ID No. 2 The transmission destination ID No. of the transmission data memory TD. From the memory area (step S26). As a result of this search, the destination ID No. If there is, then the state of the response request flag (area 64) is checked, and if it is in the set state "1" (step S27), this is set to the reset state "0" and deletion of the response request message data is prohibited. The process of canceling from is executed (step S28). By canceling the deletion prohibition, the response request message data can be deleted at any time.
[0060]
In step S29, as shown in FIG.
“I understand. BB”
Is displayed on the LCD display section 12, and the owner A. A is notified.
[0061]
Subsequently, the above-mentioned reply message data is stored as RMSG1 in the area 72 of the reception data memory RD, and the transmission source ID No. is stored in the area 73. (2) is stored. Then, a reply flag is set to “1” to indicate the arrival of reply message data for reply request message data that has been transmitted once (step S30). In the case of normal message data reception, the process ends without setting an answer flag in step S30.
[0062]
If the answer request flag has already been reset in step S27, the reset process in step S28 is skipped and the process proceeds to step S29. If no name data is detected in step S25, it is determined that the received data is not reply message data, and the process proceeds to step S29. That is, when normal message data is received, a normal message such as “Please contact the head office” is displayed on the LCD display unit 12 as indicated by e in FIG. Therefore, the answer flag is held at “0” in the reception data memory RD.
[0063]
In the first embodiment, the owner of the pager 1 can arbitrarily read out a transmission message or a reception message and display it on the LCD display unit 12. This is executed as a read mode when the owner presses the RTMR mode key 132, and the flow is shown in FIG.
[0064]
In the flow of FIG. 8 described above, if the selection of the mode read by pressing the RTMR mode key 132 is determined in step S11, the read mode is entered and the process of step S41 of FIG. 14 is executed. That is, in this step S41, several transmission message data and reception message data are retrieved from the data memory RTD (transmission data memory TD and reception data memory RD), and the transmission message and the reception message are displayed based on these data. The
[0065]
As a result of this search, a list display is performed separately for the transmission message and the reception message, as shown in FIG. 15, based on the message data stored in the data memory RTD. In this list display, a desired message can be browsed while the cursor position is highlighted as shown by f in FIG. 15 by operating the up and down arrows of the cursor key 134. For example, if the cursor position indicates the position of the transmission message based on the transmission message data TMSG1 of the above-described response request, as shown by f in FIG.
“I want to take time after 7 o'clock tonight. AA”
Is highlighted (steps S42 and S43).
[0066]
The position of the message indicated by f is extracted, for example, when the operation (pressing) of the arrow portion indicating the right of the cursor key 134 is detected, and the message is extracted and displayed in reverse on the LCD display unit 12 as indicated by f. Is done. Further, a screen for selecting whether to delete with “Yes” or “No” is formed on the LCD display unit 12 together with the message, as indicated by g in FIG. 16 (step S44). When the cursor (inverted display) is moved to the “Yes” side by the operation of the arrow portion indicating the left and right of the cursor key 134 and “Yes” is selected (step S45), the process proceeds to step S46. .
[0067]
In step S46, it is determined whether or not the message selected in step 45 is a transmission message stored in the transmission data memory TD. If it is a transmission message, the transmission message is a response request message in the next step S47. Whether or not deletion is prohibited is determined from the state of the answer request flag. As a result, as shown in FIG. 7, if the reply message (received message data RMSG1) for the reply request message (transmission message data TMSG1) has been received, the reply request flag is set as described in the flow of FIG. Is automatically reset, it is determined that the deletion is not prohibited by looking at the reset “0” state, and the process proceeds to step S51.
[0068]
On the other hand, if the answer message is not received, the answer request message data RMSG1 remains set with the answer request flag set to “1”, so that it is determined to be in a deletion prohibited state. If a determination result indicating that this is a deletion prohibition state is obtained, the fact that this transmission message is in a deletion prohibition state is indicated by h in FIG.
“This message is forbidden to delete!”
Is displayed by displaying the message (step S48).
[0069]
Then, on the LCD display unit 12 again, a screen for selecting “Yes” or “No” as to whether or not to execute deletion is formed as shown by i in FIG. 17 together with a message indicating that deletion is prohibited. When the cursor (inverted display) is moved to the “Yes” side by the operation of the arrow portion indicating the left and right of the cursor key 134 and “Yes” is selected (step S49), the process is performed to execute the deletion forced execution. Shifts to steps S50 and S51, where the answer request flag is reset and the answer request message data TMSG1 is deleted along with the reset of the answer request flag. In the case of reply request message data in which the reply request flag has already been reset, the process jumps directly from step S47 to step S51 to delete the message data.
[0070]
As described above, the answer request message data in which the answer request flag is set is notified to the owner of the pager 1 that the answer request message data is in a deletion prohibition state even if deletion is attempted as usual. If it is desired to cancel the deletion of the reply request message, the process proceeds to step S52 by selecting “No” in step S49 described above. In this step S52, although not shown, a display screen for selecting “Yes” or “No” for “End” is formed on the LCD display unit 12. At this time, if “Yes” is selected by the cursor, The reading mode ends, and the process returns to step S1 in FIG. If “No” is selected by the cursor in step S52, the process returns to step S42 and the list display is resumed.
[0071]
In step S49 described above, the transmission message can be deleted by the owner's judgment. In this case, “Yes” is selected on the display screen indicated by i in FIG. Become. Here, “Yes” is selected after the owner confirms “This message is forbidden to delete!” (Indicated by h in FIG. 17). For example, even if the owner has not confirmed the answer message data corresponding to the answer request message data, the answer request message data can be deleted at the owner's own will.
[0072]
As described above, according to the first embodiment described above, when reply request message data is transmitted, the reply message data is not received until the reply message data for the reply request data is received. Although the answer request message data is not accidentally deleted, it is possible to strengthen the protection of the answer request message data and improve the utility value of data communication.
[0073]
In addition, when deleting response request message data with the response request flag indicating prohibition of deletion set, a message indicating that deletion is prohibited is displayed once, so that deletion cannot be performed with only one deletion designation. Therefore, it is not necessary to delete the answer request message data by mistake, and it is possible to improve the safety in answer request message data protection.
[0074]
(Second Embodiment)
In the first embodiment described above, if the condition that the received data is the reply message data corresponding to the reply request message data transmitted earlier is satisfied, the reply request flag is automatically reset and the reply message data is set. However, in the second embodiment described below, even if the above conditions are satisfied, after the incoming message is notified by blinking the LED 14 or the like, the notification is sent from the owner. If the stop operation is not performed within a certain period of time, the response request flag is not reset, and a flag indicating that the response message data is unconfirmed at the time of reception (hereinafter referred to as an unconfirmed flag) is set and read mode is set. The response message data is once read and displayed to reset the unconfirmed flag. In the following description, illustration and description of the configuration are omitted for the same configuration as the first embodiment, and the same reference numerals are used during the description.
[0075]
FIG. 18 is a diagram showing a memory configuration of the reception data memory RDD in the second embodiment. The reception data memory RDD according to the second embodiment is further provided with an area 75 for setting an unconfirmed flag. FIG. 19 is a flowchart for explaining the incoming process of the pager according to the second embodiment.
[0076]
Similarly to FIG. 11 described above, when the response message data from the pager 1B for the response request message data is received, the pager 1A executes the next incoming call processing. The pager 1A accepts incoming calls from the center 3 by intermittent reception as usual (step S61). The transmission data transmitted from the pager 1B is taken into the pager 1A. At that time, it is determined whether or not the incoming address data is destined for the pager 1A by collating with the information such as the address data registered in the ID-ROM 19 in the decoder unit 18. As a result, if it is confirmed by the determination in step S8 that it is addressed to the pager 1A, the received data is stored in the temporary reception buffer 202 (steps S62 and S63).
[0077]
Next, the controller 20 searches the received data stored in the reception buffer 202 for name data of the transmission source of this data (step S64). If name data is detected (step S65), it is determined that the answer message data for the answer request message data has arrived. First, an ID No. corresponding to this name data is retrieved from the data bank memory DB. Is read out. This ID No. Is the sender ID No. It becomes.
[0078]
Specifically, the name data of the transmission source is detected from the reply message data corresponding to the reply message stored in the reception buffer 202, and the corresponding ID No. Is retrieved from the data bank memory DB. In this case, the transmission source is the owner B. of pager 1B. Since it is B, the name data is “BB” (display content). Based on the name data “BB”, the transmission source ID No. 2 is detected.
[0079]
Further, the transmission source ID No. Same ID No. as (2) The transmission destination ID No. of the transmission data memory TD. From the memory area (step S66). As a result of this search, the transmission destination ID No. If there is, then the state of the answer request flag (area 64) is checked, and if it is in the set state “1” (step S67), in order to notify the next message arrival, the control unit 20 is not shown. The timer provided is started, measurement is started for a certain time, and during the certain time, for example, the LED 14 is blinked as notification means, and it is detected whether an instruction to reset the notification is operated by the owner. Processing is executed (steps S68, S69, S70 and S74).
[0080]
And if the instruction | indication which resets alerting | reporting is detected, alerting | reporting operation will stop, an answer request flag will be reset (step S70 and S71), and it will be released from deletion prohibition. By releasing the deletion prohibition, the response request message data can be deleted at any time.
[0081]
Then, in step S72, as shown in FIG.
“I understand. BB”
Is displayed on the LCD display section 12, and the owner A. A is notified.
[0082]
Subsequently, the above-described reply message data is stored as RMSG1 in each area 72 of the reception data memory RDD, and the transmission source ID No. is stored in the area 73. (2) is stored. Then, the answer flag (area 74) is set to “1” to indicate the arrival of the answer message data for the answer request message data once transmitted (step S73).
[0083]
If time-up is detected from the elapse of a certain time in step S74, the notification operation is stopped while the answer request flag is kept in the set state “1”, and the displayed message is deleted. The received message data is stored in the reception data memory RDD, and the corresponding unconfirmed flag is set to “1” in the area 75 (see FIG. 18), and the process proceeds to step S73.
[0084]
In the second embodiment, the normal timer data that is not the reply message data and the reply message data corresponding to the reply request message data in which the reply request flag has been reset are also received (steps S65 or S67). The process is started (step S76), the incoming of the message is notified, and the notification is reset or the time is detected (steps S77, S78 and S80). Also in this case, when an instruction to reset the notification is detected (step S78), the notification operation is stopped (step S79), a message is displayed on the LCD display unit 12, and the time is up after a certain period of time. When detected (step S80), the unconfirmed flag corresponding to the message data received in the reception data memory RDD is set to "1" in the area 75, and the process proceeds to step S73.
[0085]
Next, the reading mode in the second embodiment will be described. FIG. 20 is a flowchart for explaining a main part of the read and delete processing on the pager side according to the second embodiment.
[0086]
Also in the second embodiment, the processing of the entire read mode is executed according to the flowchart of FIG. 14 described above, but when the transmission / reception message list is displayed (steps S42 and S43), as shown in FIG. , Steps S91 to S94 are added.
[0087]
First, in step S91, among the transmission / reception messages currently displayed in the list, the reception message having the unconfirmed flag set is retrieved from the reception data memory RDD. For example, in the example of FIG. 18, the unconfirmed flag (area 75) of the reply message data (RMSG1) is set to “1”, which confirms the arrival of the reply message data transmitted from the pager 1B at the time of arrival. Indicates not.
[0088]
Therefore, when the unconfirmed reply message is confirmed by this list display, the unconfirmed flag corresponding to the reply message data is reset to “0” in the next step S93, and in the subsequent step S94, the reply message data RMSG1 is handled. The response request flag of the response request message data (TMSG1) is retrieved from the transmission data memory TD. This is the sender ID No. of the reply message data. Destination ID corresponding to data No. Data can be acquired by searching the transmission data memory TD. As a result of the search, the transmission destination ID No. The answer request flag corresponding to the data is reset, whereby the answer request message data (TMSG1) is released from the prohibition of deletion and can be deleted.
[0089]
As described above, according to the second embodiment, when reply request message data is transmitted, reply message data for the reply request data is received and cannot be deleted until it is confirmed or read. Although the confirmation request message data is not confirmed or read out, the response request message data is not erroneously deleted, thereby enhancing the protection of the response request message data and improving the utility value of data communication.
[0090]
Also in the second embodiment, when deleting the response request message data in which the response request flag indicating the prohibition of deletion is set, a message indicating the prohibition of deletion is once notified by display, and the deletion is designated once. Since it is not possible to delete the response request message data, it is not necessary to delete the response request message data subject to deletion prohibition, and this can improve the safety in protecting the response request message data. It is.
[0091]
Now, in this read mode, when an answer request message for which deletion is prohibited is displayed in step S48 (see FIG. 14), it is not shown in place of the “deletion prohibited message!” Indicated by h in FIG. But,
“Unconfirmed message!”
This message can be displayed, and it can be emphasized that it is a message that requires an answer, unlike simple deletion prohibition.
[0092]
In the present embodiment, a pager having a wireless transmission function is described. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to a wireless data communication system such as an MCA or a cellular phone. is there. The present invention is also effective for electronic mail systems and the like.
[0093]
【The invention's effect】
  As described above in detail, when deleting an answer request message in which information for prohibiting deletion is set, the present invention informs the user once by displaying a message indicating deletion prohibition once. Deletion cannot be performed only by specifying deletion. By doing so, it is possible to improve safety in protecting the answer request message without accidentally deleting the answer request message.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a data communication system according to the present invention.
FIG. 2 is a top view showing an example of an external shape of the pager shown in FIG.
3 is a block diagram showing an example of an internal configuration of the pager shown in FIG.
4 is a diagram showing one main memory configuration of the RAM shown in FIG. 2; FIG.
5 is a diagram showing a memory configuration of a data bank memory allocated to the RAM shown in FIG. 4 in the first embodiment.
6 is a diagram showing a memory configuration of a transmission data memory allocated to the RAM shown in FIG. 4 in the first embodiment.
7 is a diagram showing a memory configuration of a reception data memory allocated to the RAM shown in FIG. 4 in the first embodiment.
FIG. 8 is a flowchart for explaining pager transmission processing according to the first embodiment;
9 is a diagram showing a display example during transmission processing according to the flow shown in FIG. 8. FIG.
FIG. 10 is a diagram showing another display example during transmission processing according to the flow shown in FIG. 8;
FIG. 11 is a flowchart for explaining pager incoming processing according to the first embodiment;
12 is a diagram showing a display example during an incoming call process according to the flow shown in FIG.
13 is a diagram showing another display example during reception processing according to the flow shown in FIG. 11. FIG.
FIG. 14 is a flowchart illustrating read and delete processing on the pager side according to the first embodiment.
FIG. 15 is a diagram showing a display example at the time of read and delete processing according to the flow shown in FIG. 14;
FIG. 16 is a diagram showing another display example at the time of read and delete processing according to the flow shown in FIG. 14;
FIG. 17 is a diagram showing another display example at the time of read and delete processing according to the flow shown in FIG. 14;
FIG. 18 is a diagram showing a memory configuration of a reception data memory in the second embodiment.
FIG. 19 is a flowchart for explaining pager reception processing according to the second embodiment;
FIG. 20 is a flowchart for explaining a main part of read and delete processing on the pager side according to the second embodiment.
[Explanation of symbols]
1,1A, 1B Pager
2 Public network
3 Center
4 transmitting base station
5 receiving base stations
6 pay phone
11 Body
12 LCD display
14 LED
15 Antenna
16 Transmission / reception selector switch
17 RF receiver
18 Decoder part
19 ID-ROM
20 Control unit
21 Encoder section
22 Transmitter
23 ROM
24 ID number detector
25 RAM
26 Display buffer
131 LCD keyboard
132 RTMR mode key
133 TM mode key
134 Cursor keys
135 Power switch
136 Input pen
201 Receive buffer
202 Transmission buffer
203 Flag setting circuit
DB data bank memory
RD received data memory
TD transmission data memory

Claims (3)

In a data communication system that performs wireless data communication bidirectionally between at least two data communication terminals,
The data communication terminal,
Storage means for storing a message requesting an answer and information for prohibiting deletion of the message in association with each other ;
Transmitting means for transmitting a message requesting an answer stored in the storage means to a data communication terminal of a transmission destination ;
Determination means for determining whether the received data is an answer message to a message for requesting an answer stored in the storage means when data is received;
When the determination means determines that the message is an answer message, a request to delete the message requesting the answer stored in the storage means is made, and the information corresponding to the deletion request answer request message is prohibited. In response to the display of the deletion prohibition state, when a deletion request is made again, changing means for changing the information prohibiting the deletion into information enabling the deletion,
A data communication system characterized by comprising:   The determination means includes
  A communication management means for storing a message source name, a destination name and identification information in association with each other;
  Collation means for collating whether or not there is identification information corresponding to the transmission source name included in the received data in the identification information corresponding to the transmission destination name stored in the communication management means;
  The data communication system according to claim 1, further comprising: When the data is received, a notification means for notifying for a certain time and forcibly stopping during the notification,
  If the determination means determines that the message is a reply message and the notification means is forcibly stopped within the predetermined time, the deletion stored in association with the message requesting the reply in the storage means is prohibited. Forced change means to change the information to be information that can be deleted,
The data communication system according to claim 1, further comprising:

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