KR900000090B1 - Display control method - Google Patents

Abstract

The method for displaying the characters which are not registered in a font memory includes a first process for recording a special pattern in a third memory (102), a second process for makng a management table for managing the character code corresponding to the font not recorded in the third memory and for recording the code on the table, a third process for recording the special code corresponding to the special pattern on a first memory (101), a fourth process for shifting the font corresponding to the character code to a third memory, and a fifth process for replacing the special code into corresponding character code, and for eliminating the character code.

Description

Display control method

1 is a block diagram of a display system showing an embodiment of the present invention.

2A and 2D show a display screen.

2B is a diagram showing the contents of the refresh memory.

2C is a diagram showing a foreign capital management table.

3 and 4 are process flow charts.

The present invention relates to a display control method of a display device for displaying various types of font font patterns including, for example, Chinese characters, special symbols, and the like, in particular, not registered in a font pattern memory in a font pattern display device. The present invention relates to a display control method suitable for displaying so-called foreign characters.

Conventionally, as one of the display control methods of this kind, all the font patterns that can be displayed are registered in the memory (font pattern memory) in the display device, and the character codes are sequentially output in correspondence with the display screen, thereby supporting the character codes. Techniques for outputting a font pattern on this font pattern memory are known. According to this technique, however, a large amount of font patternions must be registered in this memory, including font patterns that are not necessary for display, and thus there is a drawback that the capacity of the font memory is increased. Normally, there are thousands or more of the font patterns that can be displayed, but the number of font patterns that are actually required for display is sufficient, and the drawback is remarkable.

Therefore, in order to eliminate this drawback, the high-frequency font patternion required for display is registered in the font-pattern memory in the display device, and the remaining low-frequency font patternon is externally stored as an external disk such as PROFI DIS. If there is a need to display a font pattern stored in the device and not registered in the font pattern memory, the font pattern is stored in the font pattern memory in the external memory device before the character code is written to the refresh memory. Then, the technique of displaying is known.

However, according to this technique, there is a problem that the display is interrupted as long as the font pattern is loaded for each occurrence of this foreign character, so that the display is difficult to see. Another problem is that it takes time to complete the display. This is a serious problem that, in particular, when displaying line reception data, a response cannot be made within a specified time.

SUMMARY OF THE INVENTION An object of the present invention is to enable display of all font patternians including foreign characters without increasing the capacity of the font pattern memory in the display device, and to make the display completion response relatively quick even in the display of foreign pattern. It is to provide a display control method.

According to the present invention, there is provided a first memory (i.e., a refresh memory) for storing a character code of a font pattern to be displayed on a display screen corresponding to a display position on a display screen, and a second memory for storing all displayable font patternions. Memory (i.e., external storage device), and a third memory (font pattern memory) for storing a part of the font pattern stored in the second memory, and corresponding to character codes sequentially output from the first memory This is realized in a display system that reads a font pattern from a third memory and displays it on a display screen. That is, when it is necessary to store a special font pattern in the third memory and to display any font pattern that is not stored in the third memory, the character code X corresponding to the certain font pattern is indicated. When stored in the first memory, instead, a special code for displaying the special pattern is written into the first memory. Therefore, the special pattern onion is displayed at a certain position on the display screen displaying the font pattern onion not registered in the third memory. After that, the font patternian corresponding to the character code X is read out from the second memory at a different timing than the above display process, and stored in the third memory. By substituting the special code, the font pattern corresponding to the original character code X is displayed on the display screen.

In a preferred embodiment, a management table for managing foreign capital codes is provided, and when it is necessary to display the foreign pattern, the foreign code is stored at the address of the management table corresponding to the storage address of the first memory. do. This management table is searched asynchronously from the normal display processing, and the foreign table to find the foreign code to be repaired is displayed. If a corresponding foreign-character code is found, it is loaded from the second memory of the original font pattern to the third memory as described above, and the foreign-character code on this management table is erased.

EMBODIMENT OF THE INVENTION Next, the Example of this invention is described in detail based on drawing.

1 is a block diagram of a display system showing an embodiment of the present invention. In the drawing, reference numeral 100 denotes a processing unit (CPU), 103 denotes a display unit, which stores a display refresh memory (RFM) 101 which stores a character code to be displayed, and a character font pattern. A font pattern memory (hereinafter referred to as CGM memory) 102 and a display unit DISPLAY 107. Numeral 104 denotes an external storage device such as a profi disk. Reference numeral 105 denotes a foreign capital management memory that stores a display refresh memory 101 and a foreign capital management table corresponding one-to-one as described later.

The processing apparatus 100 is connected to the display refresh memory 101 and the CGM memory 102 in the display apparatus 103, and writes and reads a font pattern on the CGM memory 102 through the data line 111. FIG. Then, the refresh memory 101 writes and reads character codes through the data line 110. The external storage device 104 registers all displayable font patterns. Then, a new font pattern is stored in the CGM memory 102 via the data line 112 and the data line 111 under the control of the processing apparatus 100, or any font pattern in the CGM memory 102 is externally stored. Or replace with a font pattern on the device 104.

The processing apparatus 100 is further connected with a foreign capital management memory 105 via a data line 113 and can store a character code corresponding to a font pattern that is not stored in the CGM memory 102. If necessary, the line controller 106 is connected via the data line 116 of the processing apparatus 100, and an external calculator (not shown) and transmission / reception of a character code or font pattern through the line 117 are provided. Do it.

Next, the functions of the refresh memory 101, foreign capital management table, and the like will be described in detail with reference to FIG. 2A and 2B show an example of a display screen, FIG. 2B shows the contents of the refresh memory 101, and FIG. 2C shows the contents of the foreign capital management table constituted in the foreign capital management memory 105. As shown in FIG.

The font pattern displayed on the display screen is given by the user program in the processing device 100 or by any of the character codes received via the line control device 106 via the line 116.

Given a character code, for example, as shown in Figure 2a, ＂ABC ア イ 山… … Consider the case where ＂is displayed. Firstly displayed character pattern 언 AB… … The character code corresponding to i is written to the refresh memory 101 as shown in FIG. 2B. In this example, each character code is represented by a 2-byte code, and each code shown in FIGS. 2B and 3C is represented by a hexadecimal code. The character 'A' is written on the refresh memory 101 as hexadecimal code (00C1) ₁₆ and the character 'B' is (00C2) ₁₆ . Unlike ordinary EBCDIK code characters (generally represented as single-byte code), Chinese character codes occupy a two-character quotient. Therefore, the character ＂山＂ is stored in the hexadecimal code 40D1 ₁₆ in the area of the EBCDIK code 2-letter share.

The case where the character ＂川＂ is given next to the above letter ＂山 ,, and furthermore, the case where the character＂ 川 ＂is an foreign pattern is explained.

Since the font patternion corresponding to the character code of the above-mentioned mountain is stored in the CGM memory 102 of the display device 103, as shown in FIG. 2, the refresh memory 101 has, for example, a character code. Two pieces of (40D1) ₁₆ are stored successively. By the way, since the font pattern of the Kazukawa font that follows this is not registered in the CGM memory 102, this character code is not written in the refresh memory 101. Instead, a predetermined special mark (for example, The code corresponding to the mark 201 painted by the black line in the display screen 200 of Fig. 2 is stored, as shown in Fig. 2, for example, unlike the usual character code, (4FFF) ₁₆ is used in which all three digits are (F) _16. Corresponding to this special mark code 4FFF ₁₆ , the special mark 201 is displayed on the display screen.

As long as it is understood by the operator that the special mark is not the original character pattern, it may not be the blacked mark 201 as shown here. In addition, the code corresponding to this special mark can be distinguished from other character codes, and it is not necessary to be ₁₆ (4FFF).

In the display device of the present embodiment, the character pattern of the Kazukawa letter which is not made into the CGM memory 102 is not displayed after being read by the external storage device 104, and as described above, the predetermined special The mark 201 is temporarily displayed and moved to the display of this character. That is, in this case, the code ₁₆ of the next character WUW is written into the refresh memory 101. The same operation is continued in the following to display all the display contents. Therefore, the processing waiting time for reading the foreign character character pattern from the external storage device 104 is not necessary, and the time until the completion of the display processing of the display contents can be minimized.

Here, the character cord (40D3) ₁₆ L Turn | character "川". Since the pattern is foreign, the timing is the same as that of the special mark code (4FFF) ₁₆ at the address of the refresh memory 101, and at the corresponding address of the foreign capital management memory 105, The character code 40D3 of ₁₆ is stored.

The foreign capital management table manages whether or not the font pattern corresponding to each character code is registered in the CGM memory 102 corresponding to the address where the character code of the refresh memory 101 is stored. That is, if the font pattern is registered in the CGM memory 102, ₁₆ codes are stored (0000) at the address of the foreign capital management table corresponding to the address of the refresh memory 101, and are not registered in the CGM memory 102. If the font pattern is a foreign pattern, the character code is stored at the corresponding address of the foreign capital management table.

This foreign capital management table is at a different timing than the normal display processing, i.e., when the refresh memory 101 or the CGM memory 102 is accessed, and can be accessed asynchronously with them.

Therefore, while the special mark is temporarily displayed on the display screen, the external memory management unit 104 searches for this character management table to find a character code other than (0000) _16, and outputs a font pattern corresponding to the character code in the external storage device 104. It reads out and writes to CGM memory 102. The character code is written to the refresh memory 101, and the character code is deleted from the table on the foreign capital management memory 105. The start of the asynchronous processing may be, for example, a timer start every 10 msec, or the like. It is sufficient to make a pattern for one character or write two or more characters at once in one operation.

는 할입금지를, 또

는 할입금지해제를 각기 나타내고 있다.3 is a flowchart art showing a process of writing screen display data into the refresh memory 101 one by one under the control of the processing apparatus 100. FIG. In the drawings

Prohibit assignment

Indicates an unassignment.

In the above writing, when a character code that becomes an external character is found, the code of the special mark is written in the refresh memory 101, and the character code is also written in the external character management memory 105. When writing the character code to the refresh memory 101, it is checked whether or not the character already written below is a special mark. In addition, in order not to conflict with the processing flow of FIG.

4 is a process flow chart for explaining the operation of retrieving the foreign capital management table and registering the foreign font pattern to the CGM memory 102. FIG. This process is performed asynchronously with the normal display process.

Under the control of the processing apparatus 100, a table on the foreign capital management memory 105 is searched and it is checked whether or not a character code is written. If the character code is written, the font pattern of the character code is taken out to the external storage device 104. While the read font pattern is prohibited from being allocated, the external character management memory 105 is read and checked again, the font pattern is written into the CGM memory 102, and the character code is written into the refresh memory 101 and the foreign capital is read. The character code of the foreign capital management table on the management memory 105 is deleted. After the end of the process, the prohibition of payment is released.

In the above process, the prohibition of assignment / release is to prevent the misjudgment caused by the contention processing occurring during the memory reading and writing. It is not necessary to set the arrangement as described above, and the contention management may be performed by other methods. For example, if the structure of FIG. 3 cannot be processed between the no-payment zones of FIG. 4, FIG. 4 does not need to be assigned / released.

In the above embodiment, the foreign capital does not wait for access and generally displays the special mark 201, but since most of the font patternians are registered in the CGM memory 102, the external memory device 104 selects the font patternians. The frequency of attraction is not very high. Therefore, even if a sentence with a special microphone is displayed on the display screen, the operator can understand the approximate meaning.

In addition, when the foreign mark display processing started at different timings as shown in FIG. 4 is performed, even if the special mark 201 becomes the key point of the sentence, if the character is waited as it is, the special mark is individuated one by one. Because of the substitution of patterns, the accuracy of reading is not lost.

Therefore, according to the present embodiment, even if there is foreign capital in the screen data to be sent through the line, even if there is foreign capital, it is displayed as a special mark and continues as it is. When you want to see the tongue, it is effective to replace it automatically if you wait with the brake. Of course, the special mark may be rewritten with other data before the original pattern is not converted.

In addition, when the external storage device 104 does not have an original pattern, it can be notified by writing the code 4FFF ₁₆ shown in 204 of FIG. 2B as the grating mark 202 shown in FIG. 2A, for example. The screen 2d without the black special marker 201 is obtained with time elapsed by repetition of the asynchronous processing shown in FIG. 4, and is used when the external storage device 104 does not have the original patternion. It goes without saying that the lattice mark 22 or its code 4FF1 may be replaced with another mark or code.

As described above, according to the present invention, when the font pattern of the character code to be displayed on the screen is not stored in the font memory, a predetermined special mark is displayed instead, thereby increasing the capacity of the font pattern memory. It is an effect that a display control method that can quickly return a display completion response can be realized. It is also possible to search the foreign capital management table corresponding to the position of the special mark asynchronously with the above process, load the font pattern into an external storage device, and replace the original character pattern with the original character pattern.

Claims (1)

A first memory 101 for storing character codes corresponding to a display position on the display screen, a second memory 104 for storing all displayable font patterns, and a font pattern stored in this second memory And a third memory 102 for storing a part of the turbine, and in response to the character codes sequentially output from the first memory, font patterns are output from the third memory, and displayed on the display screen 107. In the display system for displaying the font pattern, in the third memory 102, a special pattern is stored, and the character code corresponding to the font pattern is not stored in the third memory. A character code is stored in the management table, and a special code corresponding to the special pattern is stored in the address of the first memory 101 in which the character code is to be stored. By retrieving this management table after that, the font pattern corresponding to the character code stored in this management table is transferred from the second memory 104 to the third memory 102, A special code stored in the memory is replaced with the character code, and the character code is deleted from this management table.

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