JPH01115243A - Data communication equipment - Google Patents

Abstract

PURPOSE:To communicate command information inherent in both pieces of equipment by confirming that both transmission and reception terminals have the same terminal function at the time of negotiation prescribed with CCIPP Recommendations T62 and T73. CONSTITUTION:When an opposite terminal and a session are established, a transmission side inputs the function of a terminal operation and information to indicate its command to the Recommendation T73 protocol element of the session user data part of a document function list command prescribed by the Recommendation T62, and sends them. The opposite terminal returns the self- function and the command by a document function list positive response. There, when the function of the opposite terminal and the command are the same as the self-terminal, the transmission side starts the exchange of the document by changing the information concerning the document into the form to use the command.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to a data communication device, and particularly to a device for communicating command information specific to a device for operating a terminal.

[Prior art]

Conventionally, in this type of device, during document exchange, information indicating the document structure, encoding method, terminal device characteristics, and document information in order to reproduce the document as intended by both the sender and the receiver was communicated according to a certain standard.

Therefore, even between the same terminal devices, it was necessary to create and communicate data in accordance with the above-mentioned standards in order to achieve what the sender and receiver intended.

〔the purpose〕

The present invention provides the CC
Document function list specified in ITT Recommendation T, 62 During command/response communication, by including terminal functions and their command information in the negotiation items performed using the above-mentioned Recommendation T, 73, it is possible to create a list of functions for operating a terminal device. Enables communication of command information unique to devices.

〔Example〕

Specific embodiments of the apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the apparatus of the present invention, and FIG. 2 is a diagram showing the flow of processing on the transmitting side of the apparatus of the present invention.

Here, the procedure for transmitting a document containing device-specific command information regarding an operation to a partner terminal is as follows.

First, the document creator uses the control information stored in the control section 4 and the control section storage section 5 to enter the document creation state of the terminal. (At this time, if necessary, the control information stored in the auxiliary storage section 8 may be used through the auxiliary storage section control section 7.) In this state, the operator can check the status of the display section storage section 2 on the display section 3. A document is created by manually inputting keys from the key input section 1 while viewing the document. At this time, the character document in the document is read by the key human power unit 1), the photographic document is read by the image reading unit 13, and the input/output control unit 1 reads the existing document.
1, or stored in the image storage section 10 through an operation according to control information for creating a photographic document stored in the control section storage section 5. At this time, the document stored in the image storage section 10 may be processed by the image processing section 9 in order to create a desired document. These character documents and photographic documents are character-encoded for character documents, facsimile-encoded for photographic documents by facsimile encoding/decoding section 6, and then stored in auxiliary storage section 8.

Next, the process flow on the sending side when the control unit 4 sends the document stored in the auxiliary storage unit 8 to the other party terminal via the communication unit 14 based on the control information in the control unit storage unit 5 will be explained with reference to FIG.

Of the seven layers of the communication standard in the O8I basic reference model (basic reference model for open system interconnection) of I5O (International Organization for Standardization), the data link layer is established in FIG. 21, and the network layer is established in 22. Furthermore, the transport layer was established at 23ff
At step 1 and step 24, the session control procedure of the session layer is executed. Once a session with the other party's device is established,
CCITT Recommendation 'r as a document control procedure in 25
- Recommendation T of the session user data section of the document function list command specified in 62, information indicating the terminal operation function and its command is sent in the 73 protocol element. The partner terminal returns its capabilities and their commands by means of a document capability list acknowledgment response.

Therefore, at step 26, on the sending side, if the functions and commands of the destination terminal are the same as those of the own terminal, then, at step 27, information regarding the document is converted into a form using commands.

If the functions and commands of the own terminal and the other terminal are different, proceed directly to step 28.

In 28, after considering the presence or absence of a command expression, T,7
The presentation layer data specified in step 3 is created, and document exchange is started in step 29.

Here, 27 specific examples are shown. When communicating a document as shown in FIG. 3, rectangular diagonal lines are exchanged.

Here, regarding the usage of the command %boxline and its parameters, consistency on the sending and receiving sides was confirmed in 26.

The present invention is not limited to the embodiments described above, and various modifications can be made without changing the gist thereof. For example, instead of determining whether operation command information can be sent to the other terminal based on the response to the document function list command shown in FIG. It may be stored in the auxiliary storage section and executed when the session shown in FIG. 24 is established.

〔effect〕

According to the present invention, the following effects can be obtained.

By exchanging command information for operating the terminal equipment between the sending and receiving terminals, it becomes possible to express the intentions of both the sending and receiving sides with simple information, and the same can be done in accordance with the CCITT recommendations mentioned above. The operation of the terminal can be simplified compared to the case where this method is used, and the transmission efficiency on the communication line can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the system of the present invention, Fig. 2 is a diagram showing the flow of processing on the transmitting side of the device of this embodiment, and Fig. 3 shows a specific example in this embodiment. It is a diagram. 1... Key manual section 2... Display storage section 3... Display section 4... Control section 5... Control section storage section 6... Facsimile encoding/decoding section 7... Auxiliary storage control section 8...Auxiliary storage section 9...Image processing section 10...Image storage section 11...Input/output control section 12...Document output section 13...Image reading section 14 ...Communication Department 15...Bus Bee Giant

Claims (1)

[Claims] In data communications, CCITT Recommendation T. 62 and T
．． 73, when it is confirmed that both transmitting and receiving terminals have the same terminal functions, including the operation method, to communicate command information specific to the device for operating the terminal. A data communication device featuring: