KR880002118B1 - Letter processor - Google Patents

Abstract

The circuit for processing Korean character data composed by 2 byte in one character clock comprises memories (9,10) for storing even and odd data of genus of the character respectively, generators (21,22) for storing half data of English character respectively, generators (23,24) for generating half-consonant data of Korean character respectively, generators (25,26) for generating half-vowl data of Korean character respectively, and controllers (29,30) for controlling even and odd data of the genus or character data exclusively so that the data processing is two times faster than using one genus controller.

Description

Character processing device

1 is a block diagram of a conventional character processing apparatus.

2 is a circuit diagram of a character processing apparatus according to an embodiment of the present invention.

3 is an input / output waveform diagram of the multiplexer shown in FIG.

* Explanation of symbols for main parts of the drawings

1: CPU 2 ~ 8: Transmitter

9,10: Storage device for specifying character data 11,12: Storage device for specifying attribute data

13 ~ 16: buffer 17 ~ 20: latch circuit

21,22: English letter generator 23,24: Korean letter generator

25,26: Hangul vowel generator 27: Buffer

28: CRT controller 29,30: property controller

31: Multiplexer 32: Monitor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character processing apparatus of a personal computer. In particular, in Korean terminal that requires high dot frequency, Hangul character data composed of 2 bytes is executed during 1 character clock, so that the video dot data is displayed on the monitor. The present invention relates to a character processing apparatus capable of outputting a video dot data having a high video dot frequency on a monitor by effectively outputting the same.

In general, Hangul is composed of a consonant, neutral, and Jongsung, and even when displaying Hangul having such a configuration as coded digital data, two bytes (16 bits) per character are required. In this case, for example, when Korean characters are defined as 2 bytes and displayed, Korean characters are allocated to the initial, neutral, and final letters by 5 bits, respectively, and the remaining 1 bit is used to determine whether the processed character data is Korean mode or English mode. In this way, Hangul is usually stored in the system's video memory with a 16-bit data length.

In the conventional method for outputting character data through a monitor, 16 bits of character data are stored in the first buffer for one character clock by 8 bits in the configuration of a logic circuit for signal processing. The 8-bit data stored in the buffer and the remaining 8-bit data stored in the video memory are stored in the second and third buffers at the second character clock, respectively, and then the data is temporarily stored in the second and third buffers. There has been a case in which the character data stored are addressed and the corresponding character is outputted. Thus, a block diagram according to the related art is shown in FIG. That is, in the configuration of one embodiment of the conventional character processing apparatus shown in FIG. 1, the English and Korean characters are composed of two bytes (16 bits) to be processed by eight bits.

In such a configuration, when outputting predetermined character address data stored in the video memory 33 under the control of a central processing unit (not shown), first, 8-bit data of the front end is outputted to a predetermined first buffer during one character clock. Stored in the first buffer 34 during the second character clock and the remaining 8-bit data stored in the video memory 33 are decoded by the second buffer 35, respectively. By designating the corresponding address for the character generator 38, the signals of the coded character generator 38 are converted into serial signals one by one by the parallel / serial converter 39 and applied to the monitor.

In the process of data processing, as two character clocks are required to address one character data, the processing speed of the data is slowed, and the character generator (38) is used to scan characters in the monitor. ) Output is converted into serial data by the parallel / serial converter. In this case, as the data processing speed of the parallel / serial converter 39 is low, the data scanning speed on the monitor is naturally slowed down. Hangul terminal with high video dot frequency subdivided to have more dots to output a single character or code with more beautiful fonts could not operate effectively due to differences in processing speed. In other words, one syllable can be written by a 5 × 7 dot matrix, but in Korean, a 16 × 16 dot matrix or more dot matrix configuration is required to have a more beautiful font. The converter 39 is required to have high data throughput, but the parallel / serial converter currently introduced has been unable to perform high speed data processing, which makes it difficult to construct the font beautifully.

On the other hand, another method of the conventional Hangul character processing was to process the initial, neutral, and finality sequentially, but according to this method, two character clocks are required to process the character data for one syllable. Therefore, the overall processing speed of the data is not only slowed down, but also when the signal output from the character generator is output to the monitor, it is output through the parallel / serial converter composed of TTL circuits. There was a disadvantage that it can not be printed in a more beautiful font.

The present invention is to improve the above-mentioned general disadvantages, and when processing Hangul character data consisting of two bytes, that is, 16 bits, 16 bits during one character clock while using a general 8-bit element in the logic circuit configuration By dividing the Korean data into radix and rain, it not only outputs Hangul characters to the monitor but also uses two attribute controllers that could not be used because of slow processing of Hangul characters. It is an object of the present invention to provide a character processing apparatus that can implement a Hangul terminal having a high video dot frequency by allowing it to be divided and processed.

Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is to improve the above-mentioned general disadvantages, and when processing Hangul character data consisting of two bytes, that is, 16 bits, 16 bits during one character clock while using a general 8-bit element in the logic circuit configuration Hangul data is divided into radix and rainwater to be processed in parallel to output Hangul characters to the monitor, as well as using two attribute controllers that were not available due to the slow processing of Hangul characters. It is an object of the present invention to provide a character processing apparatus that can implement a Hangul terminal having a high video dot frequency.

Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, the address terminal AD and the data terminal DT of the central processing unit 1 are transmitted through the transmitters 2 through 5 and the transmitters 6 through 8, and the memory device for specifying the character data 9 ( 10) and the storage device 11 and 12 for specifying attribute data, and the buffers 13 to 16 and the latch circuits 17 to the output terminals of the transmitters 4, 5 and 7, 8; The English alphabet generator 21, 22, the Hangul consonant generator 23, 24, the Hangul vowel generator 25, 26, and the property controller 29, 30 are connected to each other. A CRT controller 28 is connected to the output terminal of the transmitter 2 and 3 connected to the address terminal AD and the adapter terminal DT of (1), and at the other end of the attribute controllers 29 and 30, an English letter is used. As the generators 21 and 22 are directly connected, the Hangul consonants 23 and 24 and the Hangul vowel generators 25 and 26 are connected through the ORA gate OR2 and the buffer 27. At the output of this attribute controller 29, 30, The multiplexer 31 and the monitor 32, which selectively outputs even and odd character data according to the dot frequency applied to the central processing unit 1, are connected in order.

2 shows a circuit diagram of the character processing apparatus according to the first embodiment of the present invention having the above-described structure. In the character data designation storage device 9, the superior data of the Hangul data consisting of 16 bits is stored. Radix data of Korean data is stored in the data specifying storage device 10, and even and odd data of attribute data each consisting of 16 bits is stored in the attribute data specifying storage devices 11 and 12, respectively. .

The English alphabet generators 21 and 22 are divided into half of each English alphabet, and the Korean alphabet generators 23 and 24 and the Korean vowel generators 25 and 26 respectively contain Korean characters. The whole consonants and vowels are divided in half.

On the other hand, the attribute controller 29 and 30 which converts attribute data and character data paths output in parallel from each character generator 21 to 26 into serial data and sends them to the monitor 32 are excellent in the attribute and character data. And because it is configured to be used exclusively for cardinal data, it can process the signal almost twice as fast as using a single property controller.

Here, for example, with reference to the waveform diagram shown in FIG. 3 for the case of outputting the English character data, in the central processing unit 1, the address for the English character to be output is transmitted through the transmitter 2, and By the address signal, the data designation signal for the alphabetic character is stored in each of the buffers 13 and 14 in the even-numbered character data designation storage device 9 and the odd-character data designation storage device 10. By the address signal transmitted through 2), the attribute data designation signal stored in the even and odd attribute data storage devices 11 and 12 is latched in the latch circuits 19 and 20. FIG.

On the other hand, the data designation signals stored in the buffers 13 and 14 by the chip enable signal and the clock signal, which are not shown in FIG. 2, are provided through the latch circuits 17 and 18 through the English character generators 21 and 22. By assigning the corresponding character to the corresponding character, the data for the corresponding character is inputted to the property controllers 29 and 30, respectively, and the property data designation signal stored in the latch circuits 19 and 20 is also transferred to the property control. It is input to (19) (30). Accordingly, the signal inputted to the rainwater and odd attribute controllers 29 and 30 is outputted from the central processing unit 1 and inputted to the multiplexer 31 according to the dot frequency as shown in FIG. 3 (3-3). Since the multiplexer 31 selects, for example, even data of FIG. 3 or odd data shown in (3-2), a series of video dot data such as (3-4) is generated, and an alphabetic form is formed on the monitor 32. Will be output as That is, since the multiplexer 31 selects and outputs even data when the frequency shown in (3-3) of FIG. 3 is low level, the multiplexer 31 selects and outputs odd data when the dot frequency is high level. The video dot data shown in (3-4) of FIG.

On the other hand, the Hangul character processing method is made similar to the above-described English character processing method, but Hangul is divided into consonants and vowels, and each of the consonants and vowels separately to process the excellent and odd data.

That is, when processing Hangul characters, the address signal for the consonants and vowels of Hangul characters is designated by the central processing unit 1 through the transmitter 2, so that the address signals are transmitted to the character data specifying request storage device 9 and the like. The address signal, which is applied to the character data designation storage device 10 and is output and stored in each of the buffers 13 and 14, is stored in the buffer 13 and 14 for the corresponding character. By this, the even and odd attribute data designation signals stored in the attribute data designation storage devices 11 and 12 are latched in the latch circuits 19 and 20.

On the other hand, the data designation signal stored in the buffer 13 and 14 by the chip enable signal and the clock signal (not shown in FIG. 2) is transmitted through the latch circuits 17 and 18 to the Hangul consonant generator 23 ( 24) and the consonants and vowels of the corresponding excellent or odd numbers are stored because they are applied to the Korean vowel generators 25 and 26, so that the data for the consonants and vowels are buffered through the ORA (OR1) or OR2. And then input to the attribute controllers 29 and 30. Accordingly, the signals inputted to the rainwater and odd attribute controllers 29 and 30 are outputted from the central processing unit 1 so that stormwater or odd data is selected by the mucky tuner 31 so that a series of video dots are provided. Data is input to the monitor 32 to output the Hangul character form.

As described above, in the present invention, when processing a Hangul character composed of two or more bytes, a consonant and a vowel for the Hangul character are simultaneously processed during one collector clock while using a general-purpose 8-bit device. It is possible to output a character, and also by using a plurality of property controllers, the processing speed is high, so that a high video dot frequency can be used, which has the advantage of implementing a more beautiful Hangul character processing device.

Claims (1)

The address terminal AD and the data terminal DT of the central processing unit 1 are transmitted through the transmitters 2 to 5 and the transmitters 6 to 8 to store the character data designation storage devices 9 and 10 and the attributes. Data specifying storage devices 11 and 12 are connected, and buffers 13 to 16 and latch circuits 17 to 20 are provided at the output terminals of the transmitters 4 and 5 and the transmitters 7 and 8. One end of the English alphabet generator 21, 22, the Korean alphabet generator 23, 24, the Korean alphabet generator 25, 26 and the property controller 29, 30 are connected to each other. A CRT controller 28 is connected to an output terminal of the transmitter 2 or 3 connected to the address terminal AD data terminal DT of 1), and an English character generator 21 is connected to the other ends of the attribute controllers 29 and 30. (22) is directly connected and the Hangul consonants (23, 24) and Hangul vowel generators (25, 26) are connected through the oragate (OR1) (OR2) and the buffer 27, the property controller At the output of (29) (30) And a multiplexer (31) and a monitor (32), which in turn output and output character data of even and odd numbers according to the high dot frequency applied from the central processing unit (1), in turn.

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