KR880002129Y1 - Crt lecture display device - Google Patents

Abstract

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Description

Korean-English combined splitting 6-part CRT character display

1 is a simplified block diagram of the present invention system.

2 is a block diagram of character information division composition of the present invention.

Figure 3 (a)-Figure 3 (b) is an illustration of the present invention and the bungee division scheme.

4 is a truth table of address division.

5 is a circuit diagram of six divisions of boiling parts, which are essential parts of the present invention.

Fig. 6 (a) -Fig. 6 (d) is an example of a six-division pattern.

7 is a specific implementation circuit diagram.

8 is a carnotogram for a split circuit.

9 is a division example for modification.

The present invention relates to a character display device of a computer screen and a CRT that can quickly and easily process Korean and English with a special logic circuit.

In recent years, as computers become more and more popular, they are widely used in various social fields such as schools and factories. However, most of the computer's terminology is English only, so the robots, NC machines, and factory control devices that handle work with the language of the conversational computer and the independent central processing unit, as well as the high language, are only for English. In a country where industrialization is urgently needed, language barriers become a barrier to computer dissemination. However, Korean Hangul is not easy to use, but it is very difficult to use in terminal devices such as screens and printers. Sometimes, the synthesis device is researched and developed in various places, but the processing speed is higher than that of English-only screens and displays. , The number of printable characters, characters, price, etc. appeared a lot of problems, and by pushing the Korean output forcibly, not only the English output ability but also the ability to process Chinese characters to be expanded in the future was sacrificed. There was also little compatibility with.

In order to solve these obstacles and problems, the present invention connects the address of the text image displayed on the screen with a fixed circuit from the beginning, so that the text signal coming from various input devices in the central processing unit is All you have to do is to send the pattern through the character generator to a predetermined block.

This not only significantly reduces the time required for Hangul collection, but also saves the image pattern of Hangul, saving the memory and freeing up the ability of the central control unit for the terminal. There is a big feature in that it is possible to give the alphabetic character processing ability equivalent to that of the terminal device and at the same time have Hangul expression ability.

The present invention can be designed to be controllable as a variety of general-purpose microprocessors (8 bit Microprocessor) recently used to meet the requirements as described above, by simply remodeling the general English-only screens to date There is another feature to make it available.

Figures of the main configuration and output of the circuit are shown in Figs. 1 through 7, and Fig. 1 shows the input and output of the input and output devices, keyboards, and communication devices. In English, after moving the position of the cursor in English mode, finish the address drive to be displayed on the screen, receive the status signal from the control unit (CRT controller), and receive the status signal to output the text signal. Character information corresponding to the character signal input from is retrieved from the character information storage unit by dot pattern by 1 byte (8 bits), and the screen is output serially through the shift register at a predetermined address. It is possible.

Referring to the six-segment circuit again, FIG. 2 receives various status signals of the central processing unit and controls the screen controller while adjusting the state of the screen to match the period of the crystal oscillation circuit in the timing controller. The character information signal is input to the screen control unit. This signal is outputted through the video control circuit by outputting the character pattern of the character generator in the form of dot patterns in parallel to the video memory (image) memory designated by the address (Adderss Selector). That is, the point of this device is to concatenate a specific character pattern outputted from the character generator by dividing the screen address into finely divided up, down, left, and right sides so that the character information signal can enter only a specific block at the same time as the input signal is input. You don't have to synthesize the vowels and the base separately, and the place where each phoneme will be set is hardware.

In order to explain this in more detail according to FIGS. 3 (a) and 3 (c), the Korean and English mixed character information such as "Hangul-80 CRT" is inputted from the central processing unit. The width and height of Korean and English are not uniform, but the width of Korean characters is generally considered to be twice the width of English characters and the height is the same. -The third (c) can be divided into six addresses as well, and the Arabic numerals can be divided into three addresses.

Here, when the Hangul domain is divided into six equal parts from (1) to (6) as shown in FIG. 3, the shape can be included in the divided address of the consonants (1) (2) (4) (5). (2) (3) (4) (5) (6) may also be reshaped in the divided address, and the support may only enter (3) (6). This will be described in the following).

If a character signal input from the central processing unit is called through a screen control unit and a character pattern is recalled from the character information storage unit, the address for outputting the image pattern is already determined. You only need to print the character pattern quickly without the need for By doing address division, it is possible to display the exponential display of the exponential function or the special small number that is used in the scientific and technical formula without using a special device (eg, 2 ³ = 8, 10g 10 = 0.471254 ……).

In the case of high speed operation with the above function, it is preferable to use less than FF (H) (256) type when using 8-bit processor for the pattern to be transmitted to each block. Actually, 256 × 3 = 768 kinds of patterns can be put in place because it is smaller than the 8 × 8 dot pattern area. Especially, in Korean, there are many horizontal and vertical straight vowels. Since there are many, in fact, many patterns are saved, which has the effect of saving the memory double.

In this way, the English-only screen of the 5 × 7 and 7 × 9 type Dot Martix type used so far can be converted into both Korean and English by simply fixing it as an output address. As a hardware, general control and interactive type can be easily changed to several gate chips, and it provides the same processing power as the conventional English display device, and does not injure any English output function and prevents Hangul and other special characters. There is a great feature of this design in that it can be printed and turned off to save memory (CG ROM).

If this is explained as a whole through the accompanying drawings, for example, the text signal input from each input / output device is divided into Korean and English modes by the central processing unit. If you secure six divided screen output areas and secure three divided output areas in English, and input a character signal (hexadecimal), the screen control unit receives them and displays the Korean and English characters in the character information storage unit. The information is read in block units by using a character generator to read rows and columns in parallel in a dot pattern, and in the case of a screen by 1 byte, a high speed transmission is made to a predetermined division address to a video screen through a moving raster.

Here, the boiling division 6 division method, which is considered to be the gist of the present invention, will be described in more detail based on the boiling division 6 division circuit of FIG. 5. First, as shown in FIGS. 2 to 7 of the accompanying drawings, a general CG (character generator) is shown. When the CRT operation is explained, the contents of the video RAM (Refreshmemory) 2114 of 4044 are recalled by the basic frequency (CG CLOCK) of the oscillator of the CRT control unit, and the signal enters the address line of the CG 2716. The dot pattern is output in accordance with the period of the fundamental frequency.

Here, the C.G patterns in the areas (2) (3) or (5) (6) need only be one type. In the case of 4 divisions, it is possible to output as many CG patterns as possible without circuit modification, and the output can be made by dividing the system into 6 equal divisions by other methods, but the limitation of the number of display characters and the shape of characters is difficult in design such as the capacity of CG. In the present method, even if the CG pattern is the same pattern, the shapes appearing in the areas (2) and (3) are different, and thus the memory for the CG can be greatly reduced.

Therefore, the output of area (1) is not a problem, but the method of outputting areas (2) and (3) is difficult. Therefore, when the RA (Row Adress) line is encoded in the multiplex, When the contents of the video RAM are displayed on the screen as shown in Fig. 4, the address is (1), (4) areas o + n, (2) (5) areas 400 (H) + n, (3), (6) areas Is assumed to be 800 (H) + n (n: hexadecimal) (see Figure 4).

RA ₀ RA ₁ RA ₂ RA ₃ Row of dot patterns

0 0 0 1 8 lines

1 0 0 1 9 rows

0 1 0 1 row 10

Only in this case, if the (2) area is activated and the MA signal is sent (MA10 "1", MA11 "0") to output the pattern from the video RAM, only the top 3 dots of the pattern output from the CG appear on the screen ( 2) Area output is possible, and (3) In case of outputting area (refer to Figure 4).

RA ₀ RA ₁ RA ₂ RA ₃

1 1 0 1 line 11

0 0 1 1 line 12

1 0 1 1 row 13

0 1 1 1 line 14

1 1 1 1 15 rows

If you set MA11 to activate the area (3), only the lower 5 dots can be output.

Dot patterns that appear in parallel are video out after successive P-S conversion.

The above operation is repeated with horizontal synchronization of about 64μsec and vertical synchronization of about 16msec.When the signal comes from the keyboard, the video RAM becomes writable and the CG pattern number transmitted from the CPU is written in the predetermined RAM area. The binary counter (Cursor position indication) advances (+1). In other words, even if the keyboard is not pressed, the characters entered before are displayed on the screen and are always refreshed by the video RAM by a separate crystal oscillator on the CRTC side. Here, when a single character code enters the general video RAM, the typeface should be automatically advanced. However, in the present invention, in case of Hangeul, each pattern is input after the combination of phonemes is combined up, down, left, and right (1). (2) (3) (4) (5) (6) of the (6) pattern is entered, it is to advance. The problem of splitting Korean characters naturally occurs here, but if you use the CG memory (2761) which normally outputs the English dot pattern, it is 16000 ÷ 64 ((Width) 8 × 8 (Vertical)] ≒ FF (H), that is, about 256 (8 × 8 dots), can sufficiently create English and Korean patterns.

In the following description of the principle of six divisions of boiling, the horizontal (side) direction is divided into 2: 1 to facilitate the correspondence between Korean and English. On the other hand, it is not necessary to distinguish separately because the vertical division into three equal parts is the same height in Korean and English, but since the two patterns require eight dot lines vertically, the low red line (RA) line (2 ³ = 8) 3 You will need a dog (4 total because it is 16Dot overall).

If the RA line is not well organized, there is a fear that the first output image is deleted by the next output image.

Ex) 8 dots (1): Figure 3B (1)

3-dot (2) (2) contact pattern → upper part → full output: (2) in Figure 3B

5-dot (5) (3) contact pattern → lower part → full output: (3) in Figure 3B

The above sums can be made into 3 + 5 = 8 Dot. Investigating these phenomena in (1) (2) (3) of Figure 3B with a Carno diagram as shown in Figure 8 shows that by Boolean Algebra,

In other words, this is done by ANDing A ₀ and A _1, and ANDing IN ₂ and IN ₃ of A _2. The truth table of the division circuit we desire is completed. Therefore, one pattern of 8 × 8 dots is different for the area (2) and the area (3), thereby reducing the CG ROM.

Above the area (2) a hardware description, and area 3 as well as can configure independently circuits by Boolean algebra as discussed above, but RA ₃ in Carnot Table as in claim 8 In the case of about 1 And the number of cases other than the region 2, the circuit diagram of FIG. 8 can be simply configured. That is, F (H) = It will be A ₃ .

Fig. 6 (a) shows the change of the vowel followed by the initial consonant and the shape of the vowel. Fig. 6 (b) shows the synthesis of letters.

As shown in Fig. 6, as shown in Fig. 6 (c), the phonemes divided into six equal parts can be represented. Here, the method to configure the Hangul equal division 6 division method on the actual screen uses at least 13 CRT scan lines to represent the Hangul Hangul characters as shown in Fig. 4, and between 1-3 and between the string and the string The circuit for detecting the eight scan lines of the area 1, the three scan lines of the area 2, and the five scan lines of the area 3 in Fig. 6 (c), which is usually 16 lines (adjustable by a computer) by inserting the empty scan lines of It is shown in FIG. 5 and can be confirmed in the truth table of FIG.

As shown in Fig. 6 (d), the upper part of the "ㅏ" sound in the region 4 can be used in common with the upper part of the "ㅑ" sound, and the "ㅣ" sound in the region 5 is "1" in Korean and "i" in English. "" j "" l "" L ", etc. can be converted to parts such as.

7 is a circuit diagram centering on the CRT control unit when incorporated in a specific computer.

Modified Example

The dot patterns of 8, 3, and 5 described so far can also be obtained simply by modifying the above Boolean algebra (see Figure 7).

In the similarity transformation of Hangul boiling splitting 6 splitting, the basic pattern of Hangul boiling splitting 6 splitting can be modified to divide the upper middle part of boiling splitting 6 splitting as follows.

1. Korean (English) 6-part splitting When the line scan of the upper part is divided into 8-line splits by using a blank pattern in the line 2-3.

2. SCAN the upper part of the six divisions by subtracting 1-3 lines with hardware logic (H / W LOGIC).

3. Dividing by 6 divisions When splitting by 8 divisions with character patterns of upper 2-3 lines.

As shown in Fig. 9, the six-segment upper line is transformed into eight divisions or column position-based equivalent divisions or three divisions using the concept of six divisions.

As described above, it is a useful new design having the effect of not only significantly reducing the time required for collecting the Hangul, but also saving the memory by saving the image pattern of the Hangul.

Claims (1)

As shown in the figure, in a screen output device having an English output including a central processing unit, a screen control device, and a character information storage device, a character display address having a boolean number is boiled in Korean based on a six-division circuit. It divides into 6 areas in advance in hardware, and outputs Korean and English characters with less character patterns than the known character patterns at a predetermined division address without using separate parts for Hangul writing. : 3: In case of dividing into 5 dots, Multiplexer address that makes 3 Dot area active is called B, Multiplexer address which makes 5 Dot area active is called A, and Row Adress line is RA ₀ from above, RA ₁ , RA _2, RA ₃ la assuming, above equation takes the RA ₀ and RA ₁ aND to the inverter, the inverter ₃ and RA ₂ to RA of the taken and, the signal taken and to enter into the B signal The AND value of the inverter ₃ and the RA signal for the B to be a Hangul US Combine Unequal 6 divided CRT character display.