JPS5927912B2 - External character transfer method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for transferring custom characters between systems in which the correspondence between custom character codes and custom character patterns is different.

In terminals that handle a wide variety of characters, such as kanji terminals, it is generally difficult to constantly store patterns for all characters in a character generator within the device.

Therefore, a system is often adopted in which only patterns for a limited number of characters that are frequently used are stored at all times, and character patterns for other characters are imported from the center as needed. The former character is called the content, and the pattern corresponding to it is called the internal character pattern. The latter will be referred to as a custom character and a custom character pattern, respectively. Within one system consisting of the central office and a group of terminals, the correspondence between the above-mentioned external character codes and external character patterns is uniquely determined.

In addition, internal character codes and internal character patterns are almost unified by the standard. However, regarding custom characters, the correspondence between custom character codes and custom character patterns varies depending on the system. On the other hand, in recent years, there has been a growing trend toward open systems, and it has become necessary to communicate between independent systems.

However, since the correspondence between custom character codes and custom character patterns differs from system to system, this poses a problem in the transfer of custom characters between systems. Although the problem can be solved by uniquely assigning custom character codes and custom character patterns to all systems, it is extremely difficult in practice to change the assignment in an existing system. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a private character transfer method for achieving the transfer of private characters between systems in which the assignment of private character codes and private character patterns is different.

In the present invention, a correspondence table between the external character codes and external character patterns used in other systems is loaded into the center of each system at all times or as needed.

When transferring external characters from the center or terminal of one system to the center or terminal of another system, identification information unique to the own system is added to the external character code before transmission. The receiving system identifies the other system using the identification information received together with the external character code, and converts the received external character code into a corresponding external character pattern from the correspondence table applicable to this system. Hereinafter, the present invention will be explained in detail with reference to the drawings.

Now, as shown in FIG. 1, consider the transfer of custom characters between systems A and B, which have different assignments of custom character codes and custom character patterns. 1 is the center of system A (central processing unit,
3 is one of the terminals.

2 is the center of system B, one of the 4 terminals.

System A, . Each B is given unique identification information (identification number) at the time of system generation. In the center 1 of the system A, a correspondence table between the private character codes and the private character patterns in the system B is loaded in advance or as needed. Similarly, in the center 2 of system B, the correspondence table between the custom character codes and custom character patterns in system A is loaded. When transferring external characters from Central 1 to Central 2, the identification number of System A is added to the external character code before transmission. Upon receiving this external character code and identification number, the central 2 converts it into an internal code, finds the corresponding external character pattern using the preloaded correspondence table for system A, and stores it as a pair of internal code and external character pattern. and outputs the rendition pattern as necessary. The above conversion to the internal code may be performed at the receiving center 2, but
Relay device placed between centers 1 and 2 (code compression, storage,
This may be performed by a communication processing device (communication processing device) that executes processing such as speed conversion. This reduces central processing in the receiving system. The transfer of external characters between terminals of different systems or between a terminal and the center of a different system is basically the same as described above, but the difference is that the terminal refers to the central correspondence table as necessary.

Here, a case where the terminal 3 or 4 in FIG. 1 is a display terminal as shown in FIG. 2 will be explained.

In FIG. 2, 6 is a buffer, 7 is an internal character pattern generator, 8 is an output conversion circuit, 9 is a conversion table, and 10 is a display unit. The character code (internal character code or external character code with an identification number) transferred from the terminal 3 of another system (system A) is stored in the buffer 6 after being converted into an internal code.

The buffer 6 is scanned in synchronization with the display unit 10, and character codes that have been converted into internal codes are sequentially read out. Of the read character codes, internal character codes are converted into corresponding character patterns by the internal character pattern generator and sent to the display unit 10 for display. When the external character code is read, the conversion table 9 is indexed. If the conversion table 9 stores the pair of the external character code (converted the received external character code and identification number into an internal code) and the external character pattern, the corresponding external character pattern is output from the conversion table 9, and the output conversion circuit After receiving parallel/serial conversion and timing control by 8, display unit 1
0 and displayed. If the pair of private character code and private character pattern does not exist in the conversion table 9, the corresponding pair of private character code and private character pattern from the center 2 is added to the conversion table 9.
The external character pattern is then displayed in the same manner. In the above description, it has been stated that systems A and B are each given a unique identification number, but it goes without saying that a common identification number can be given to a system consisting of a plurality of systems with the same correspondence between the external character code and the external character pattern.

In addition, the term "external character code" is used to include both the external character number and the external character code.

The private character number is a number assigned to identify each private character, and the private character code is a code assigned to identify each private character. For example, an example of a code structure when three 2-byte Kanji code system graphic characters (6 bytes in total) are displayed using a non-standard character number is as follows. Here, E
XC is a control character indicating that it is a private character, and PlP2 is an identification number of the sending side.

If Ala2::! (3ra\A3a4Ott5na5
If a6: ri: Tt6 ra 9, this example is external character number 35.
Represents the external character 6. An example of a code structure in the case of a private character code is as follows, which represents the private character of the private character code Ala2.

Whether to use the external character number or external character code can be selected using another control character ``Character code configuration mode selection''. As described above, the present invention makes it possible to transfer external characters without changing the existing code system between systems in which the correspondence between the external character code and the external character pattern is different. It is possible to solve one communication problem in the network (a system consisting of a public network and a public line network), and its effects are significant.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system configuration diagram for explaining the external character transfer method of the present invention, and FIG. 2 is a main part block diagram showing an example of the configuration of the terminal in FIG. 1. 1, 2...System A. Center of B, 3, 4...
...System A. ．． Terminal B, 6... Buffer, 7... Internal character pattern generator, 8...
...Output conversion circuit, 9...Conversion table, 10
...Display unit.

Claims (1)

[Scope of Claims] 1. In a system for transferring external characters between systems in which the correspondence between a pattern of external characters (referred to as a external character pattern) and a number or code assigned to it (referred to as an external character code) is different, another system at the center of each system Load the correspondence table between custom character codes and custom character patterns in the system at all times or as needed, and when transferring custom characters from the center or terminal of one system to the center or terminal of another system, the correspondence table of custom character codes and custom character patterns in the system is loaded. Identification information is added and transmitted, the receiving system identifies the other system using the identification information received along with the external character code, and converts the received external character code into a corresponding external character pattern according to the above correspondence table applicable to that system. A private character transfer method that is characterized by the following. 2. The terminals in each system are equipped with a conversion table for storing pairs of private character codes and private character patterns that include identification information, and each terminal stores the received pairs of private character codes that include identification information and corresponding private character patterns in the above conversion table. 2. The private character transfer method according to claim 1, wherein if the private character pattern does not exist in the conversion table, the corresponding private character pattern is generated by importing the corresponding private character pattern from the center of the own system into the conversion table.