KR940009746B1 - Ponte using method for epson and ibm - Google Patents

Abstract

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Description

Font Compatibility in EPSON / IBM Modes

1a, b, c or EPSON character map.

Chapter 2a, b, c, or IBM character map

Figure 3a or the conventional emulation plan, (b), (c) is a font ROM selection operation according to the conventional emulation flag.

Fig. 4a is a drawing illustrating a font rom driving of EPSON characters, (b) is a drawing showing a font rom driving of IBM characters.

5 is a conventional EPSON / IBM mode selection flowchart.

6 is a flowchart of the present invention.

Figure 7 is an explanatory view of the international flag principle according to the code in the present invention.

The present invention is a font compatible method of the EPSON / IBM mode in the printer, EPSON / IBM fonts to be compatible with EPSON / IBM fonts regardless of the initial emulation by selecting EPSON / IBM fonts in the international flag It is about the compatibility method.

All printers currently in use have a default version that can be set by the user. The emulation part used when initializing the printer is divided into EPSON and IBM. If the user selects EPSON, the printer prints the contents of the EPSON font. If the user selects IBM, the contents of the IBM code are printed.

In other words, the mode is selected by distinguishing IBM and EPSON in the menu setting, so only the fonts in the IBM CHARACTER TABLE can be used when selecting IBM, and the EPSON CHARACTER TABLE can be selected when selecting EPSON. It is.

At this time, EPSON mode supports the extended graphic code table in EPSON mode to be compatible with graphic characters of IBM character table. IBM also supports some EPSON codes for compatibility with EPSON, but only part of them.

The international characters supported by EPSON support characters from 14 countries (see also Sections 1a, b, and c), and IBM supports character sets 1 and 2 (multiple language code character charts (850) in addition to Sections 2a and b). 2c is added to support commercial characters in many countries, but of course, if more countries are added, there will be more phonons between EPSON and IBM.

The selection of these characters is done when the printer is powered on by pressing and holding one of the keys on the menu panel in the dip switch or power off of the printer. The item is printed and selected by the user. In other words, when the user selects EPSON, a bit related to EPSON is set in the flag FLAG. That is, as shown in FIG. 3A, when the user selects EPSON, the emulation flag shows "1", for example. Of course, if you choose IBM, the emulation flag is divided by "10".

Therefore, when the code (00 ~ FF) enters the printer from the computer (PC), the printer checks the value of this emulation flag and checks whether it is EPSON or IBM to get the corresponding font data from the font ROM. Once this emulation flag is set, the printer will print the data code of all PCs (Personal Computer) from the font ROM of the set contents (IBM or EPSOM) before powering off and rewashing. That is, if the emulation flag is EPSON in the code of the computer PC as shown in FIG. 3B, the font ROM 100 leaks the EPSON data and prints it.

Therefore, in the past, EPSON fonts and IBM fonts were not compatible with each other. When the EPSON font area is set as above, the contents of the international character table that EPSON has in accordance with the contents of the International Character Setting Flag You will be able to print, which is the same as in Article 4a. That is, a flag (for example, 00000: USA) is set for each country according to the international flag selected by the printer, and the font data of the font ROM 100 corresponding thereto is leaked and printed. In contrast, when the IBM font area is set (in the emulation flag), the international characters in the fontrom 200 are selected and printed according to the value of the international flag.

That is, the font data of the font ROM 200 is printed out according to the flag of each country or region (for example, 00000: 437,00001: 850, 00010: Russian) according to the international flag by PC code as shown in FIG. 4B. will be. That is, when receiving the computer code (PC Code) as shown in Figure 5, the printer checks what mode (EPSON or IBM) selected in the menu or dip (D19) switch (step A1). If EPSON is selected, EPSON international characters are selected in the font ROM 100 (step A2), and the font data corresponding to the PC code is read from the selected international characters and printed (step A3). On the other hand, if the IBM is selected in the step (A1), the IBM selected international characters in the fontron 200 (step A4), and prints the font data corresponding to the PC code from the selected international characters from IBM (Read). (Step A5). As a result, EPSON and IBM are incompatible.

The present invention is to solve this problem is characterized in that the user reselects the EPSON and IBM characters by the bit data of the top of the international flag even if the user selects one of the EPSON / IBM characters in the menu. That is, the first step of checking whether or not the control code according to the mode (EPSON or IBM) already set when the printer receives the PC code; A second step of checking whether the code is a low code of 00-7F or a high code of 80-FF when it is not a control code; The third step is to print the international font of EPSON or IBM regardless of the first step by the international flag of Todd selected according to the second step.

According to the present invention, the third step includes steps 3-1 for determining the most significant bit value of the low international flag, and steps 3-2 for printing font data of the corresponding country when the EPSON font is selected in step 3-1. If the IBM font is selected in step 3-1, steps 3-3 for printing international fonts in IBM, steps 3-4 for determining the most significant bit value of the high international flag, and step 3-4 If the EPSON font is selected in the step, steps 3-5 are performed to print font data of the corresponding country, and steps 3-6 are performed to print international fonts in IBM when the IBM font is selected at step 3-4. .

DETAILED DESCRIPTION Hereinafter, the present invention will be described in detail with reference to the drawings, but the same parts as in the related art are denoted by the same reference numerals, and description thereof will be omitted. 6 is a flowchart of the present invention, comprising: a first step B10 of checking whether a control code of a pre-selected printer mode (EPSON or IBM) is present; A second step (B20) of checking whether the code is a low code of 00-7F or a high code of 80-FF when the code is not a control code; Performing a third step (B30) of printing the international font of EPSON or IBM regardless of the first step by the international flag of the code selected according to the second step (B20); The third step (B30) is a step 3-1 (B31) for determining the most significant bit value of the low international flag, and if the EPSON font is selected in the step 3-1 (B31) to print the font data of the country Step 3-2 (B32), if the IBM font is selected in step 3-1 (B31), step 3-3 (B33) for printing the international character font in IBM, and the most significant bit of the high international flag. A third step (B34) of determining a value, a third step (B35) of printing font data of a corresponding country when the EPSON font is selected in the third step (B34), and the third If the IBM font is selected in step -4 (B34), steps 3-6 (B36) of printing international fonts in IBM are performed.

An example of an international flag in the present invention is divided into a low international flag and a high international flag as shown in FIG. 6, the low international flag has a 00-7F code, the high international flag has an 80-FF code, and the most significant bit of each flag. It is used as a bit that distinguishes EPSON from IBM. That is, for example, if the most significant bit is "0", EPSON is selected, and if "1", IBM is selected. Based on this principle, the present invention will be described with reference to FIG. When the code comes in from the PC, the emulation flag first checks whether it is in EPSON / IBM mode. If it is a control code, the control code is processed according to the selected mode (EPSON / IBM), and the data code other than the control code performs the following steps. (First step B10). At this time, if you select EPSON or IBM mode on the PC, and the user selects 00-7F code (Low International Flag) or 80-FF (High International Flag) from the menu, regardless of the first selected EPSON or IBM mode, You will select the characters in EPSON or IBM mode.

This is because the value of the selected code is set to change to the low international flag and the high international flag in FIG. Therefore, when a code comes in from the PC, it is necessary to determine whether the code is smaller than 80 and check whether it belongs to 00-7F code or 80-FF code (step 2 (B20)). At this time, if the code belongs to the 00-7F code smaller than 80, the value of the most significant bit of the low international flag is determined (step 3-1 (B31)) and the data is stored in the font ROM (100/200) in which the IBM / EPSON international character is stored. Will read and print.

That is, if the most significant bit is "0", EPSON font is selected to print the font data of the corresponding country (step 3-2 (B32)). If the most significant bit is not "0", the IBM font is selected and the IBM international character font is selected. Print (Step 3-3 (B33)). On the other hand, if the code belongs to 80-FF, the data is read from the font in which IBM or EPSON international characters are stored, depending on the value of the high international flag, that is, it is determined whether the most significant bit of the high international flag is "0" (3rd) -4 step (B34)), if "0", EPSON font is selected to print the font data of the corresponding country (steps 3-5) (B35), if not "0", IBM font is selected and IBM international Print the character font (steps 3-6 (B36)). Of course, if the user wants to use only IBM code or EPSON code, they can be changed using the printer's control code without powering off and resetting the menu.

As described above, in the present invention, when the user selects the IBM or EPSON mode, that is, when the EPSON mode is selected in the initial emulation, all the control code specifications except the font follow the EPSON specification, but the font is an international character (00). -7F code, 80-FF) can print out the font data selected by the user and achieve the compatibility of the characters according to IBM and EPSON.

Claims (2)

In selecting EPSON / IBM characters according to the PC code, a first step (B10) of checking whether or not the control code of the selected printer mode (EPSON or IBM) is selected; A second step (B20) of checking whether the code is a low code of 00-7F or a high code of 80-FF when the code is not a control code; EPSON / IBM mode, characterized in that the third step (B30) to print the EPSON or IBM international character font regardless of the first step by the international flag of the code selected in the second step (B20) Font compatibility for. The method of claim 1, wherein the third step B30 is a step 3-1 (B31) of determining the most significant bit value of the low international flag, and the EPSON font is selected when the EPSON font is selected in the third step (B31). Step 3-2 (B32) of printing font data of the corresponding country in the country, and Step 3-3 (B33) of printing international character fonts in IBM when the IBM font is selected in step 3-1 (B31). A third step (B34) of determining the highest bit value of the high international flag; and a third step of printing font data of the corresponding country in the EPSON font when the EPSON font is selected in the third step (B34). In step -35 (B35), and if the IBM font is selected in steps 3-4 (B34), steps 3-6 (B36) of printing international fonts in IBM are performed. Font compatibility.