JPS63167546A - Document exchange system in data communication - Google Patents

Abstract

PURPOSE:To attain the exchange of composite document between communication equipments different in communication rule by converting a geometrical command in a composite document text into a dot image, and sending the signal in the mixed mode between the character code and the dot image. CONSTITUTION:A keyboard 3, a display device 4, a scanner 5 and a printer 6 or the like are used in common to generate the composite document by a composite document processing module 1 and it is stored in a disk storage device 7. In sending the composite document to other equipment, a transmission/ reception control module 2 discriminates the communication rules of the opposite party, and the data is sent as it is when the communication rules are the same. When the communication rules differ, the character string is converted into a character code, and the other part is converted into the dot image and the entire part is converted into the mixed mode text and sent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a document exchange system in data communications such as telematic services (services in which graphics can be sent along with text).

(Prior art) Generally, data communication systems such as telematics have 1
A mixed mode is provided as an optional function for exchanging (communication) text of a compound document in which character codes (character code information), dot images (facsimile code information), and geometric commands are mixed in blocks within a page.

According to this mode, for example, as shown in Figure 4, a character string (text) A, an image B composed of a bitmap,
A business graph consisting of a set of commands 01 A compound document containing a two-dimensional table D created by table operations and a figure E represented by a map etc. is created on the sending device, and the result is sent to the receiving device. , can be proofread, displayed, or printed on the receiving device in the same way as the sending device.

By the way, when executing this mode, if the transmitting side device and the receiving side device are made by different manufacturers and have different communication rules, a common document exchange rule is required.

In general, these rules include ■Construction rules for the entire compound document,
■Document processing rules, ■Graph processing rules, 0 figure processing rules,
There are six types of conventions: (1) image processing conventions, and (2) table manipulation processing conventions. If these conventions do not match between the sending and receiving devices, it will not be possible to exchange compound documents as described above.

(Problem to be solved by the invention) Currently, among such regulations, there is a movement toward standardization, such as the MIXTO by CCITT's T.73 (Recommendation regarding the Terms of Exchange for Telematic Services). However, compared to the case where devices made by the same manufacturer exchange according to their own rules, only compound documents in very limited formats can be exchanged.

In other words, there was a problem in that geometric commands such as maps, tables, and graphs could not be sent.

The present invention was made under these circumstances, and has the purpose of providing a document exchange method in data communication that allows highly flexible compound documents containing geometric commands to be exchanged even between devices with different communication protocols. There is.

[Structure of the Invention] (Means for Solving the Problems) The document exchange method in data communication of the present invention is such that the text of a compound document containing at least a character code and a geometric command created by a first communication device is When transmitting to a second communication device which has a different communication protocol than the first communication device, the geometric command is converted into a dot image, and the text of the compound document is made up of only the character code and the dot image. It is converted into exchange text and sent.

(Function) In the method of the present invention, geometric commands included in the text of a compound document to be transmitted are first converted into dot images, and the text of the compound document is converted into an exchange text consisting only of character codes and dot images. Therefore, using the conventional mixed mode, it is possible to exchange compound documents containing geometric commands between communication devices with different communication protocols.

(Example) Hereinafter, details of an example of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In the figure, 1 indicates a character code (character code information) and a dot image (facsimile code information) within one page.
, and a compound document processing module 2 that creates a compound document in which geometric command information is mixed block by block; This is a transmission/reception control module that receives document text from the other party's device.

3 is a keyboard for inputting instructions and selections;
Reference numeral 4 designates a display device that performs each display, 5 a scanner that scans and inputs images, 6 a printer that performs each print, and 7 a disk storage device that stores each data.

In this embodiment, first, the compound document processing module 1 includes a keyboard 3, a display device 4, a scanner 5, and a printer 6.
etc., to create character strings, images,
A compound document containing figures, graphs, and tables is created and stored in the disk storage device 7.

When this compound document is to be transmitted to the device, the transmission/reception control module 2 converts the text of the document through the process shown in FIG.

First, at the handshake or line selection stage, by recognizing the manufacturer of the other party's device, the communication protocol of the other party is determined. In step A), if the destination device has the same communication protocol, If so, the data of the compound document is transmitted as text according to the original mode without conversion (step B).

On the other hand, if the other party's device is made by another manufacturer and has a different communication protocol, the text of the compound document is converted into mixed mode text 1~ in the format shown in Figure 3 and sent ( Step C).

In the conversion of a compound document in this embodiment, in the base document,
The character string part is converted to a character code based on the rules of CCITT's T,61 (Recommendation for Japanese Teletex codes), and all other parts are converted to the character code based on the rules of CCITT's T,6 (Recommendation for data network facsimile codes and control functions). Convert it to a dot image based on the rules of
This is done by mixed-mode text conversion based on the rules of ITT T.73 (Recommendation for Document Conversion for Telematic Services).

In this embodiment, if the other party's device is made by another manufacturer and the communication protocol is different, image B, which is facsimile code information made up of bitmaps, and other geometric blocks other than character strings are used. It includes the data of the business graph C1 which is command information, the 2-dimensional table D, and the figure E such as a map, and then converts it into a dot image text TE2.
CCIT
Transmitted according to the rules of T, 73 of T.

Thus, according to this embodiment, even if any content other than character strings is assigned, it can be transmitted according to the conventional mixed mode rules, and the degree of freedom in documents that can be exchanged is greatly improved.

In this example, if the mixed mode text obtained by conversion is compressed and communicated using a method specified in G4/Class 1 and G4/Class 2, communication efficiency will be improved and document conversion will be easier. This makes it possible to absorb the required time lag.

In this embodiment, a case has been described in which the present invention is applied to a telematic service, but the present invention can also be widely applied to other data communication devices that exchange compound documents.

[Effect of the invention] As explained above, the document exchange method in data communication of the present invention converts the geometric commands in the text of a compound document into dot images, and converts the text of the compound document from character codes and dot images. Since the text is converted into mixed-mode text and sent, it is possible to exchange compound documents containing geometric commands with a high degree of freedom even between communication devices with different communication protocols.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a flow chart showing the operational process of the embodiment, Fig. 3 is a diagram showing the document conversion process in the embodiment, and Fig. 4 is a diagram showing the process of document conversion in the embodiment. FIG. 2 is a diagram showing an example of documents to be exchanged between a sending side and a receiving side in a conventional telematic service. 1...Compound document processing module 2...
・・・・・・Transmission/reception control module 3・・・・・・・・・
・Keyboard 4...Display device 5...
・・・Scanner 6・・・・・・Printer

Claims (2)

[Claims] (1) When transmitting the text of a compound document created by a first communication device that includes at least a character code and a geometry command to a second communication device whose communication protocol is different from that of the first communication device, A document exchange method in data communication, characterized in that the geometrical command is converted into a dot image, and the text of the compound document is converted into an exchange text consisting only of the character code and the dot image, and then transmitted. (2) The replacement text is T. The document exchange method in data communication according to claim 1, wherein the document exchange method is mixed-mode text in accordance with the rules of 73.