JPH02170251A - Information transmitting method - Google Patents

Abstract

PURPOSE:To ensure the transmission of accurate information by storing previously the information to be transmitted to a terminal of the remote side into a temporary memory part which is controlled by a system control part at a communication terminal and then storing the information into a temporary memory part which is controlled by a system control part of a terminal set at the opposite side of communication to collate these stored information with each other between both system control parts of both terminals. CONSTITUTION:At an operation terminal 10a, the information to be sent to a terminal 20a of the remote side is stored in a temporary memory 17 which is controlled by a system control part 11 and then sent to a temporary memory part 27 which is controlled by a system control part 21 of the terminal 20a. This transmitted information is sent back to the part 11 of the terminal 10a and collated with the information stored in the memory 17. Thus most parts of a transmission line having possibility of a transmission error of information are checked by collation. Thus it is possible to confirm whether the transmitted information itself is transmitted correctly or not.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a communication device in which terminals are connected via a communication line and one terminal, which is an operation terminal, controls a partner terminal, after confirming control information. The present invention relates to an information transmission method in which the other party's terminal is controlled by the user.

(Prior Art) FIG. 3 is a block diagram of a communication device illustrating a conventional information transmission method. The operation will be explained by taking as an example the case where a screen is selected in this communication device. In this figure, 10C and 20c are communication terminals, and when one becomes an operating terminal, the other becomes a partner terminal. These terminals 10c and 20c are connected via a communication line 30,
They are set up so that they can both send information to the other party's terminal and control the other party's terminal.

In the text/etc. information storage section 12 of the terminal 10C, text etc. manually entered from the image scanner 16 are stored as image data based on page number information. Information on the same screen as the plurality of screens stored in the text and other information storage section 12 is controlled by the system control section 11 and sent to the terminal 20c via the communication control section 15 and the communication line 30, together with page number information. 13 is a manual key; 14 is a display section. Further, the terminal 20c has the same configuration as the terminal 10c, and only the 10th digit number is different, and the same 1st digit number corresponds to the terminal 20c. The screen information sent to terminal 20c is sent to terminal 10.
It is stored in the text, etc. information storage section 22 of the terminal 20c based on the same page number information as the page number information in the text, etc. information storage section 12 of the terminal 20c.

Regarding the above communication device, a case will be described in which the operator inputs information from the terminal 10c and controls the terminal 20c. The operator operates the manual keys 13 of the terminal 10c and inputs information for selecting a screen to be displayed on the display section 14 from among the screens stored in the text and other information storage section 12. The system control unit 11 decodes the screen selection operation from the input key 13 and converts it into information such as a command representing selection of a screen and page number information in the information storage unit 12 such as text of the screen to be selected. The system control unit 11 transmits this command etc. control information and page number information as page selection information to the communication control unit 15, and reads out the specified screen from the text etc. information storage unit 12 based on this page selection information, and reads out the specified screen from the text etc. information storage unit 12, and 14. Communication control unit 15
transmits this page selection information along with parity check information to the communication control unit 25 of the terminal 20c via the communication line 30. The communication control unit 25 performs a parity check on the received page selection information, and if no error is detected, continues the predetermined procedure. When an error is detected, the communication control unit 15 of the terminal 10c retransmits predetermined information.
The communication control unit 15 retransmits the requested information to the communication control unit 25, and makes corrections to the previously transmitted information. If no error is detected in the parity check or if the error is corrected, the communication control unit 25 transmits the received page selection information to the system control unit 21, and the system control unit 21 sends the received page selection information to the terminal. 20c
The specified screen is retrieved from the information storage unit 22 such as sentences, and displayed on the display unit 24. As a result, the display section 1 of the terminal 10c
4 and the display unit 24 of the terminal 20c display the same screen.

[Problem to be solved by the invention] However, in the case of using the above method, both terminals 10c and 20
There is a high probability that the page selection information can be transmitted correctly between the communication control units 15 and 25 of terminal 10c, but since the transmitted information itself is not verified, it cannot be said that it is transmitted correctly. If the communication between the communication control unit 11 and the communication control unit 15 or the communication control unit 25 of the terminal 20c and the system control unit 21 fails to be performed correctly, the terminal 10C and the terminal 20c are the same. There was a problem in that it was impossible to display the screen.

This invention was made in order to solve the above problems, and includes a transmission path between both terminals to collate the transmitted information and to transmit information accurately to the other terminal with a higher probability. The purpose is to provide a transmission method.

[Means to solve the problem]

In the information transmission method according to the present invention, an operation terminal stores information to be sent to a partner terminal in a temporary storage device controlled by a system control unit of the own terminal, and also reads the information directly or from the temporary storage device to communicate. The other terminal stores the information received from the operating terminal in a temporary storage section controlled by the system control section of its own terminal and sends the information back to the operating terminal, and the operating terminal The information stored in the temporary storage of the own terminal is compared with the information sent back from the other party's terminal, and if the two pieces of information match, the information resulting from the comparison is sent to the other party's terminal, and the other terminal performs the verification. The system receives the information sent from the operation terminal when the result is found, and uses the information received before being stored in the own terminal.

In addition, if a mismatch is detected as a result of the comparison, the operating terminal reads out the information stored in the temporary storage device controlled by the system control unit of its own terminal and sends it to the other party's terminal, and the other party's terminal newly updates the information. Use the information received.

(Operation) In the present invention, in the operation terminal, information to be sent to the partner terminal is stored in a temporary storage device controlled by the system control section, and this information is stored in the temporary storage device controlled by the system control section in the partner terminal. The transmitted information is sent back to the system control unit of the operating terminal and is compared with the information stored in the temporary storage unit. As a result, most parts of the transmission path where errors may occur in the transmission of information are checked by comparison, and it is confirmed whether the transmitted information itself is being transmitted correctly.

In addition, when a mismatch is detected as a result of the verification, the operation terminal reads out the information stored in the temporary storage device controlled by the system control unit of the own terminal and sends it to the other party's terminal, and the other terminal transmits this information. use The present invention will be described in detail below using the drawings.

[Embodiment] FIG. 1 is a block diagram of a communication device for explaining the present invention in detail. In FIG. 1, 10a and 20a are terminals, and other parts that are the same as in FIG. 3 are given the same reference numerals. In the embodiment shown in FIG. 1, the text etc. information storage unit 12 shown in FIG. The difference is that an image scanner 16 is not provided and a temporary storage section 17 is provided. The terminal 20a is similarly provided with a temporary storage section 27, and does not have the text and other information storage section 22 and the image scanner 26 shown in FIG.

The present invention will be described in detail regarding the case where the terminal 20a is controlled from the terminal 10a in this communication device. When information for control is input from the input key 13, the system control unit 11 decodes the information input from the manual key 13 and converts it into control information such as a command representing performing a predetermined control. The system control unit 11 stores control information such as this command in a temporary storage unit 17 controlled by the system control unit 11, and also stores the control information such as this command in the communication control unit 15,
It is transmitted to the terminal 20a via the communication line 30 and the communication control unit 25.

The system control unit 21 of the terminal 20a stores the received control information in a temporary storage unit 27 controlled by the system control unit 21, and also stores the received control information in the communication control unit 25, communication line 30, communication control unit 15 to the system control unit 11. The system control unit 11 compares the control information stored in the temporary storage unit 17 and previously sent to the terminal 20a with the control information returned from the terminal 20a. If the comparison results in a match, information indicating that there is a match or information indicating that the terminal 20a may be controlled based on the previously transmitted control information is sent to the terminal 20a. The system control unit 21 of the terminal 20a receives the information of the verification result from the terminal 10a, and based on the control information stored in the temporary storage unit 27, executes control corresponding to the control information. Since control corresponding to the control information is performed after confirming whether the control information itself transmitted to the terminal 20a has been accurately transmitted, the control performed at the terminal 20a is accurate. Furthermore, if the terminal 10a also executes control information based on the control information, the terminal 10a and the terminal 20a will execute exactly the same control.

FIG. 2 is a block diagram of an example of another communication device to which the method of the present invention is applied, and the terminals 10c and 20c of the conventional communication device shown in FIG. 10b, 20b and t.

It is something that

In FIG. 2, sentences and the like inputted from the image scanner 16 are stored in the sentence and other information storage unit 12 of the terminal 10b as image data based on page number information (for example, directory information in the sentence and other information storage unit 12). . Information on the same screen as the plurality of screens stored in the text etc. information storage section 12 is displayed together with page number information under the control of the system control section 11 and sent to the communication control section 15 and the communication line 30.
, and is also sent to the terminal 20b via the communication control unit 25.

The screen information sent to the terminal 20b is controlled by the system control unit 21 and is sent to the terminal 2 based on the same page number information as the page number information in the text etc. information storage unit 12 of the terminal 10b.
It is stored in the text etc. information storage unit 22 of 0b.

A case where the operator performs manual operation from the terminal 10b will be described. An operator operates the manual keys 13 of the terminal 10b to input information for selecting a screen desired to be displayed on the display section 14 from among the screens stored in the text and other information storage section 12. The system control unit 11 decodes the operation information inputted from the manual key 13, and stores control information such as commands representing selection of a screen, and information storage unit 12 such as text of the screen to be selected.
Convert to page number information. The system control unit 11 stores this command etc. control information and page number information as page selection information in the temporary storage unit 17, and also reads out the specified screen from the text etc. information storage unit 12 based on this page selection information and displays it. section 14. Further, the system control section 11 transmits the above page selection information to the terminal 20b via the communication control section 15, the communication line 30, and the communication control section 25. System control unit 2 of terminal 20b
1 stores the received page selection information in the temporary storage section 27 and returns the received page selection information to the system control section 11 via the communication control section 25, communication line 30, and communication control section 15.

The system control unit 11 compares the page selection information stored in the temporary storage unit 17 and sent to the terminal 20b with the page selection information returned from the terminal 20b. As a result of matching,
If they match, the page screen information is searched from the text etc. information storage unit 22 of the terminal 20b based on the information indicating a match or the previously transmitted page selection information, and the page is displayed on the display unit 14. Terminal 2 displays information that represents good things.
Send to 0b. The system control unit 21 of the terminal 20b receives the information of the verification result from the terminal 10b, and stores it in the temporary storage unit 2.
Based on the page selection information stored in 7, the screen information of the corresponding page is retrieved from the text information storage section 22 and displayed on the display section 24. As a result, the display section 14 of the terminal 10b and the display section 24 of the terminal 20b display the same screen.

In the above example, the system control unit 21 of the terminal 20b stores the received control information and page selection information in the temporary storage unit 27, and directly sends it back to the terminal 10b (in other words, without reading it from the temporary storage unit 27, the system control unit 21 stores the received control information and page selection information in the temporary storage unit 27). Part 21
is a CPU, the information stored in the register is returned as is), but the system control unit 21 stores the received control information and page selection information in the temporary storage unit 27, and then stores the stored page selection information. Read out the terminal 10
You may send it back to b.

In the case of the embodiment shown in FIG. 2, the above storage and collation in the temporary storage section 27 may be performed on only the page number information among the page selection information.

In the above, an example of displaying an image input from the image scanner 16.26 was explained, but the same applies to documents that are input as characters using the manual keys 13.23 and handled on a page-by-page basis. Can be processed.

In addition, for example, when a digitizer is connected to the terminal, coordinate values input from the digitizer and information created based on the coordinate values can be handled in the same way.

If a mismatch is detected as a result of the above verification, the terminal 10b
The system control unit 11 transmits both the above-mentioned command control information and page number information, which are the control information or page selection information stored in the temporary storage unit 17, or at least the one that is inconsistent, to the other party terminal 20b. Send.

The partner terminal 20b controls its own terminal based on the retransmitted control information and page selection information.

Note that although the case where the operation is performed from the terminals 10a and 10b has been described above, the method of the present invention can be similarly applied to the case where the operation is performed from the terminals 20a and 20b.

Further, in FIGS. 1 and 2, the terminal 10a.

10b and the terminals 20a, 20b are directly connected by the communication line 30, but they may be connected via an exchange.

(Effects of the Invention) As is clear from the above description, in the present invention, information to be sent to the other party's terminal is stored in a temporary storage unit controlled by the system control unit in the communication terminal, and this information is transmitted to the other party's terminal. Since the data is stored in a temporary storage unit controlled by the system control unit of both terminals, and collation is performed between the system control units of both terminals, there are few parts that cannot be checked for errors in the transmission of information, and there are no errors in the connected terminal. This can significantly reduce the probability that different information will be transmitted or that different screens will be displayed on both terminals. In addition, if the verification results do not match, the information stored in the temporary storage device is read out and sent to the other party's terminal, and the other party's terminal uses this information, so when this communication device is used, the information transmitted from the other party is It has the advantage of being reliable and safe to use.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing an example of a communication device for explaining the information transmission method of the present invention, and FIG.
The figure is a block diagram of a communication device for explaining a conventional information transmission method. In the figure, 10a, 10b, 20a, 20b are terminals, 11.
21 is a system control section, 12.22 is a text and other information storage section, 13.23 is a manual key 14. 24 is a display section, 15.
25 is a communication control unit, 16.26 is an image scanner, 1
7.27 is a temporary storage section, and 3o is a communication line.

Claims (2)

[Claims] (1) In a communication device that has a function in which multiple terminals are connected via a communication line, information emitted from one operating terminal is transmitted to the other terminal, and the other terminal performs control based on the information. , the operating terminal stores information to be sent to the other party's terminal in a temporary storage device controlled by the system control unit of the own terminal, and also reads the information directly or from the temporary storage device and sends the information to the other party's terminal via a communication line. The other terminal stores the information received from the operating terminal in a temporary storage section controlled by the system control section of the own terminal and sends the information back to the operating terminal, and the operating terminal stores the information received from the operating terminal in the temporary storage section of the own terminal. The information stored in the unit is compared with the information returned from the other party's terminal, and if the two pieces of information match, the information of the comparison result is sent to the other party's terminal, and the other party's terminal An information transmitting method characterized in that the information transmitted from the terminal is received in advance, and the previously received information stored in the own terminal is used. (2) In a communication device that has a function in which multiple terminals are connected via a communication line, information emitted from one operating terminal is transmitted to the other terminal, and the other terminal performs control based on the information. , the operating terminal stores information to be sent to the other party's terminal in a temporary storage device controlled by the system control unit of the own terminal, and also reads the information directly or from the temporary storage device and sends the information to the other party's terminal via a communication line. The other terminal stores the information received from the operating terminal in a temporary storage section controlled by the system control section of the own terminal and sends the information back to the operating terminal, and the operating terminal stores the information received from the operating terminal in the temporary storage section of the own terminal. The information stored in the operating terminal is compared with the information sent back from the other party's terminal, and if a mismatch is detected as a result of the matching, the operating terminal stores the information in a temporary storage device controlled by the system control section of its own terminal. An information transmission method characterized by reading out information and transmitting it to the other party's terminal, and using the newly received information at the other party's terminal.