KR950005823Y1 - Multi-language display unit on ibm pc - Google Patents

Abstract

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Description

Multilingual Controller on IBM Personal Computers

1 is a block diagram according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 2, 7: Register 3, 8: Multiplexer

4, 5: buffer 6: font

9: Latch Circuit 10: Image Control Unit

The present invention relates to a multilingual controller in an IBM personal computer capable of simultaneously controlling and displaying multilingual characters in a monochrome mode of an IBM personal computer without destroying the compatibility.

In general, in the monochrome mode of IBM personal computers, a character consists of one byte character code (C. C) and one byte attribute code (A. C). Will be displayed.

That is, the character code C. C distinguishes 256 characters, and the attribute code A. C represents the display form of the character.

However, in the conventional IBM monochrome mode, there are many bits that are rarely used for the attribute code (A.C).

Therefore, when the multi-language control mode to be used by the bit of the unused black-and-white mode is entered, the attribute code (A.C) switches to the function of decoding it, so that the bits of the attribute code (A.C) that are not necessary for actual operation When used as a part of selecting a bank (a memory logic unit) in the font of an output printing device, the data can be displayed by controlling multiple languages.

The present invention adds registers, buffers, and multiplexers to monochrome mode to display and display multiple languages in monochrome mode. Its purpose is to enable the display and control of multiple languages in.

This will be described with reference to the accompanying drawings.

1 is a block diagram according to the present invention.

When not using the multilingual mode, registers (1) for determining the default value for assigning the prepared standard values and registers (2) for determining whether the current display method is to be used for multilingual or monolingual. And selecting a multilingual memory logical unit by a character code (C. C) through a buffer (4) (5) for filtering the multiplexer (3) transmitted by selecting the register (1) (2). Default attribute code for accessing font 6, which is a typeface of an output printing apparatus equipped with a bank for designation, and specifying a standard value prepared when using the register 2 and a multilingual mode. The multiplexer 8, which selects and transfers the register 7 that determines (A. C), is connected to the latch circuit 9 that aligns the basic character and the default property code (A. C), and the property code (A). C) input to multiplexer (3) (8) and latch circuit (9) High, and configured to be input to the font (6) and the image control section which controls the output of the latch circuit 10 to reproduce the dagae language on the display unit 10.

Hereinafter, the operation and effect of the present invention will be described with reference to FIG. 1.

First, a multiplexer, which is a transmission path, has several kinds of character sets in a part for generating characters in the original black-and-white mode with a bank in which a multilingual character is stored in a font (6) of an output printing apparatus. According to (3), when not using multilingual mode, register (1) which decides the default for designating the prepared standard value and whether to use multilingual or single language for the present display method If the " set " of the register 2 is selected, the next operation becomes the same as that of the original black and white mode.

That is, the register 1 determines a default for designating a standard value when not using multiple languages, but the multiplexer 3 selects the register 1 without selecting an attribute code (A.C). In this case, the signal output from the register 1 is filtered through the multiplexer 3 and the filter 4 and then input to the font 6.

The font 6 inputs a "bank" of a certain character set to the default of the register 1 input through the multiplexer 3 into a data line in the main control section of the IBM personal computer (not shown in the present invention). The selected character is selected by the character code C and is transmitted to the image controller 10.

On the other hand, the multiplexer 8 supplies the original attribute code (A.C) or the default attribute code for designating a standard value prepared when using the multilingual mode determined by the register (7) mode signal. Select (A. C) and enter it into the lashing circuit (9).

At this time, when the output signal of the register 2 is at the "low" level, the multiplexer 8 receives the signal of the register 7 and corresponds to a mode corresponding thereto, that is, the current display mode is multilingual or fixed one language. When selected and inputted to the latch circuit 9, the latch circuit 9 aligns the basic characters and default attribute codes (A.C) of the multilingual or fixed one language input from the multiplexer 8 to the image control unit. To 10.

Therefore, the image controller 10 controls the image of the character code (C. C) data transmitted from the bank in the font 6 and the image of the attribute code (A. C) data transmitted from the latch circuit 9 to display the display unit ( (Not shown) to reproduce multilingual.

As described above, the present invention uses an attribute code (A.C) that is not used by forming a "bank" in the font (6) in an IBM personal computer, thereby controlling and displaying multilingual characters and displaying them on the display without destroying compatibility. You can do it.

Claims (1)

A "bank" is formed, the font 6 for outputting the data of the character code C. C, the latch circuit 9 for outputting the data of the attribute code A. C, and the character code C. C. In a conventional control device having an image control unit 10 for controlling the data of the data and the attribute code (A. C) and displaying the controlled data on the display unit, the control device may not use a multilingual mode. A register (1) for determining the "default" for designating the prepared standard value, a register (2) for determining whether the present display method is to be written in multiple languages or a single language, and the register (1) (2). A multiplexer (3) to select and send to the font (6), and a register (7) to determine the attribute code (A.C) of the "default" for designating the standard value prepared when using the multilingual mode. And a multiplex for selecting the registers (2) (7) and transferring them to the latch circuit (9). Dagae language control device according to the IBM personal computer (8), characterized in that it further comprises.