JPS58117043A - Screen address designation system - Google Patents

Abstract

PURPOSE:To eliminate a terminal control program of a host computer for recognition of a code system, by making the same a screen address represented with data of other code system obtained from the conversion of the same data of the 1st code system. CONSTITUTION:X''81'' is assigned to a screen address ''61'' and converted into X''61'' at a code conversion section 8-A, which represents a character ''a'' in the ASCII code system. When the character ''a'' comes to a display terminal 3-A in the screen position designation, it recognizes the designation of the screen address ''61''. X''81'' of the EBCDIC system is converted into X''31'' of the shift out side at a code conversion section 8-B, but this corresponds to a Japanese character ''A'' in the JIS code system. When the character ''A'' comes to a display terminal 3-B in the designation of screen position, it recognizes the designation of a screen address ''66''.

Description

Detailed Description of the Invention (1) Technical Field of the Invention The present invention provides a data processing system having display terminals with different code systems, in which a host computer can determine the display Ili surface position without being aware of the difference in the code systems of the terminals. It is KL & stuff that can be handled.

■ Prior art and problems Figure 1 shows an overview of a data processing system to which the present invention is applied, in which 1 is a host computer, 2 is a communication control processing device, and 3-A and 3-B are display terminals. are shown respectively. The display terminal 3-A is of the Mu80II code system, and the display terminal 3-B is of the JI8 code system.
This is number 4 of the chord system. FIG. 2 shows an overview of the ASOIX code system, and FIG. 3 shows an overview of the JI8 code system. The host computer 1 uses the alphabetic BBODIO code system when controlling the display terminal 3-A, and the host computer K uses the katakana FiBODIO code system when controlling the display terminal 3-B. Fourth
The figure shows an overview of the EBOIDIO code system for alphanumeric characters, and Figure 5 shows the FIBOD code system for katakana characters.
This shows an overview of the IO code system.

As can be seen from Figures 4 and 5, the EBODIO code system for alphabets and the BBODIO code system for katakana, one has lowercase English letters, and the other has substitutes for lowercase English letters and katakana. The only difference is that Other character codes are the same for both. The communication control processing device 2 transfers data between the host computer 1 and the line. The communication control processing device 2 includes a code conversion means for converting gBODIo code data into A30II code data, and a gBD.
It has code conversion means for converting IO code data to JIS code data.

FIG. 6 0) shows the command sent by the host computer when specifying a screen. The screen designation command is composed of an address designation code that indicates that the following data designates a screen address, a character code that represents a row address, and a character code that represents a column address. In a display terminal, when l1iWJ is specified, it is predefined that, for example, the character code ``person'' indicates the address I11, and the character code B indicates the address 12@. FIG. 6 (■) explains the screen address, and the number indicates the display screen.

One 11m surface is composed of unit areas of 24 rows and 80 columns.

FIG. 7 is a turtle explaining the conventional screen designation method. In FIG. 7, 5-A and 5-B indicate screen address conversion tables. In the screen address conversion table S-person, the left column shows the screen address, and the right column shows the EBODIO in hexadecimal.
Shows the code.

The same applies to the screen address conversion table 5-H.

If you want to obtain data indicating the iji surface position (20, 80), check whether the target device is the display terminal 3-A or
Alternatively, check if it is display terminal 3-B, and if display terminal 3-A, use gB from screen address conversion table 5-A.
Obtain ODIo code 31, 5-1. Furthermore, in the case of the display terminal 3-8, the gBODIo codes 21 and 31 are obtained from the screen address conversion table 5-B.

As mentioned above, in the prior art, when the terminal control program of the host computer handles display screen addresses, it is necessary to be aware of whether the display terminal is of the ASOII code system or the JI8 code system. However, the disadvantage is that the terminal control program becomes complicated.

(3) Purpose of the Invention The present invention is based on the above consideration, and the present invention is based on the above considerations, and is based on the above considerations.
The purpose of this invention is to provide a nine-screen addressing scheme that allows processing to be performed on liiiiiJ positions.

(4) Structure of the invention and therefore, the screen addressing method of the present invention includes a host computer using a first code system, a display terminal A using a second code system, a display terminal B using a third code system, and It has a code conversion means OA that performs code conversion between the first code system and the second code system, and a code conversion means OB that performs code conversion between the first code system and the third code system. A communication means is provided for communicating between the above host computer and each display terminal, and when specifying a screen address to each of the above display terminals, the above host computer sends an address specification code, and then the screen line In a data processing system that sends a character code indicating a column address, the screen address indicated by the second code series data at the display terminal B, and the third code series data at the display terminal B. It is characterized in that the Im screen addresses indicated by are made the same when they are obtained by converting data of the same first code system.

6) Examples of the invention Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 8 shows one coral of the present invention. In FIG. 8, 7-A is the gBODIo code system for alphabets, 7-B is the EBDIO code system for katakana, g-A is a code converter that converts the EBDIO code system into the A30II code system, and 8-B is the code converter that converts the EBDIO code system to the A30II code system. Code converter for converting EBODIO-7-code system to JISI-code system, 9-A
9 indicates the A30II code system, and 9-B indicates the JI8I code system.

As mentioned earlier, EBODIO for alphabet
The code system and the EBODIO code system for katakana differ only in the lowercase letters and the katakana part,
The other parts match.

When the lli surface has 24 rows and 80 columns, the matching gB
Sixty characters are selected from the ODIo code area, and each of these characters is associated with a screen address in a one-to-one correspondence. And although the code is the same, the corresponding I character is different for the alphabet and katakana.
Select 20 character codes from the O code system area, and assign each of these character codes to the screen address l to l.
Correlate with. For example, Xma 81ma indicates the character 1a'' in the alphabetic EBDIO code, and indicates the character 1a'' in the katakana gBODIo code system, but these are opened at the same screen address, for example 1661. In the case of jin, the matching characters are displayed on display terminal 3-
It is natural that A and 3-H are defined to indicate the same-iij plane address. X ma 81 ma is converted to X malo 1 ma by the code converter [3-A, but this is
Indicates the letter 1C in the 30II code system. In the display terminal 3-A, when the character 1a1 comes when specifying the screen position, the screen address #66# is changed to v81v by the code converter 8-A.
H converts the character to the X character 31 on the shift-out side, which corresponds to the character 1A1 in the JI8I-Code system.

The display terminal 3-B recognizes that the screen address 1661 has been specified when the character 1A1 appears when specifying the screen position.

FIG. 9 shows an example of a screen addressing method according to the present invention. In FIG. 9, lO indicates a screen address cost conversion table, the left column shows the screen address, and the right column shows the EBDIO code in hexadecimal. Screen position (2X80
), use iji address conversion table 1.
0 and a BBODIO code of 31.51 is obtained.

As is clear from the above description, according to the present invention, the terminal control program of the host computer does not need to be aware of differences in display terminals, and as a result, the terminal control program can be simplified.

[Brief explanation of drawings]

Figure 1 is a diagram showing an outline of a data processing system to which the present invention is applied, Figure 2 is a diagram showing an outline of the A30II code system, Figure 3 is a diagram showing an outline of the JISI code system, and Figure 4 is a diagram showing an outline of the JISI code system. Figure 5 is a diagram showing an overview of the EBODIO code system for alphabets, Figure 5 is a diagram showing an outline of the EBODIO code system for Katakana, Figure 6 is a diagram explaining screen specification commands and screen rows and columns, Figure 7 is FIG. 1 is a diagram illustrating a conventional screen designation method, FIG. 1 is a diagram illustrating the present invention in detail, and FIG. 9 shows an example of the II screen address designation method according to the present invention. l...Host computer, 2...Communication control processing device, 3
-A and 3-B...display terminals. Special Pestle Applicant Fujitsu Ltd. Agent Attorney Kyotani Yotsubehi 1 Figure (SL) (5o) Figure 4 Figure 51Z1 Figure 6 (A) Figure 7

Claims (1)

[Claims] The host computer uses the first code system, the display terminal A uses the second code system, the display terminal B1 uses the j13 code system, and code conversion is performed between the first code system and the second code system. Code conversion means OA
and a code conversion means OB for code conversion between the first code system and the third code system, and communication means for communication between the host computer and each display terminal, each of the display terminals In a data processing system in which, when specifying a screen address on a computer, the host computer sends an addressing code, followed by a character code indicating the row and column address of the screen, the display terminal , the screen address indicated by the second code system data, and 1iii indicated by the third code system data at the display terminal B.
An ImWJ addressing method characterized in that when nine l11 addresses are obtained by converting data of the same first code system, they are made the same.