JPS62178354A - Character generating method - Google Patents

Abstract

PURPOSE:To obtain a character generating method capable of narrowing a character area width by having character data provided with address information indicating a narrow area read data based on that information. CONSTITUTION:If a character area width reduction mode is determined by a mode decision means, 'reduction' information is retrieved by a reduction information storage means 2. If a narrower character area width than a conventional character area width is displayed, reduction address storage means 3 is further retrieved and character data of a character generator 4 is read based on a reduction address. If an ordinary character area width is displayed in the reduction information storage means 2, the full memory area of display or printing character data can be read in usual manner, without retrieving the reduction address storage means 3. In addition, if an ordinary character area width mode is determined by the mode decision means 1, both the reduction information storage means 2 and the reduction address storage means 3 are not retrieved and the full memory area of display or printing character data can be read as usual.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a character generation method for generating characters and symbols (hereinafter referred to as F1 characters, etc.) to be displayed or printed on a CRT display device, printer, etc.

[Prior art and its findings] Character data is stored in advance in a readout 1/1 memory (hereinafter referred to as ROM). In the conventional character generation method stored in this ROM, the memory area for each character of character data, that is, the number of bits for one character, is fixed.
All bits are accessed as character data.

Therefore, when displayed or printed based on this character data, one period mark ",", comma ",", comma ","
", Colon r: "hg, Characters with small character shapes, that is, characters with narrow character width, occupy the same display area or print area as characters with normal character width, and the display area of CRT display devices and printer printing It did not appear that the area was being utilized effectively. Also, in areas such as characters where the width of one character is narrow, the character area width is too wide and it looks stretched out.
There is also the disadvantage that it cannot be read smoothly as a communication,
Furthermore, even for characters with a normal character width, there are cases where it is desired to reduce the width of the character area depending on the manner of use, but conventional methods have not been able to deal with this.

[IJI's [IJ] This invention was made in view of the above-mentioned "philosophy," and the purpose of this invention is to adjust the width of the character area according to the unique character width of a single character, how it is used, etc. The object of the present invention is to provide a character generation method that can be narrowed down.

[Summary of the Invention J] In order to achieve the object described in 1, the present invention provides the following advantages: Character data whose address information indicating a narrow area is incremented by +1 or 11 is characterized in that the character data is read out based on the address information.

[Operation of the Invention] FIG. 1 is a diagram showing the concept of the present invention, in which the mode judgment "1 stage l determines that the character area width shortening mode is r (when it is determined that the character area width shortening mode is set, the shortening information record tf!L stage When the shortened information in step 2 is searched and a character area width narrower than the normal character area width is shown, the shortened address memory [row 3 is searched and the shortened address is searched] 6 (then the character generator 4 Abbreviated information storage stage 2 for reading character data of
When the normal character area width is indicated, the entire memory area of the character data of the displayed or printed character is read out as usual without searching the abbreviated address storage 1 stage 3. In addition, if the mode determining means 1 determines that the mode is the normal character area width mode, the shortened information record +2r1 stage 2 and the shortened address storage means 3 are not searched, and all of the character data of the displayed or printed characters is searched normally. A memory area is read.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram of a character generation method according to an embodiment of the present invention. When a mode setting signal - is output by key operation on the +- board 5, the CPU 6 accesses the character generator 4 according to the mode. This character generator 4 is constituted by a ROM, and this RO
Character data having both shape information of characters and character area width information is stored in M. CPU6 is
Character data read from the character generator 4 is stored in the memory area of the display RAM 7 corresponding to the display position of the CRT display device 9, and also stored in the memory area of the mark t-RAM 8 corresponding to the print position of the printer 10. . The character data thus stored in the display RAM 7 and print RAM 8 are displayed and printed at corresponding positions on the CRT display device 9 and printer 10, respectively.

FIG. 3 is a diagram showing the data structure of the character generator 4 shown in FIG. The relevant memory area is
It consists of one byte, and the addresses progress to the right as indicated by the arrows, such as 1st address, 2nd address, etc. Correspondingly, access to character data also progresses to the right. A flag A for shortening the character area width is added to this character data for each character, and the flag A is
'', start address data Bl and end address data B2 are added as shortened address data B. The start address data Bl and end address data B2 form the character generator 4 in 4R. Not the absolute ROM address.

It is indicated by an internal address (relative address) within a memory area for one character. For character data with flag A "0", abbreviated address data B is not added as shown in FIG. 4. Flag A is set to "1" when the comma shown in FIG. This is for character data such as characters with a narrow character width such as "," or characters for which it may be desired to shorten the character area width depending on the manner of use. For character data whose flag A is "1", in the character area width reduction mode, the memory area surrounded by two lines is accessed based on the start address data 81 and end address data B2.

The added flag A and shortened address data B are searched only when the character area width shortening mode is set.
If the character area width reduction mode is not set, it will not be searched.

Next, the operation of the above embodiment will be explained based on the flowchart of FIG.

First, the CPU 6 determines whether or not the character area width shortening mode is set by operating the keyboard 5 (step St). If the character area width shortening mode is set, the process proceeds to step 52. If there is 0-character manual data, the CPU 6 gives the character selection 0-gin corresponding to that character to the character generator 4, and determines whether there is input data such as characters to be displayed or printed. Select. When character data is selected, the CPU 6 searches for flag A added to the character data for specifying character area width, and selects flag A.
is "l" (step S3). If the flag A is "1", the shortened address data B has been added, so the start address data B1
, character data is read based on end address data B2.

The memory area indicated by the shortened address data B is a memory area narrower than the memory area for one character, so the character area width information of the character data read based on this shortened address data B is narrower than the memory area for one character. This indicates the character area width, and the character area width of characters displayed or printed based on this is naturally shorter than when the entire memory area for one character is read out (step S4).

By the way, the start address data B1 indicates the address at which access actually starts in the character area width reduction mode, but the end address data B2 is different from the actual access end address. The reason for this is that, as shown in FIG. 3, the memory area of the character generator 4 is divided into 192 areas, with 1 byte in the vertical direction per address.
Addresses start from the top left area and advance to the right.
The access direction is the same as the address progression direction.

For example, when accessing an area surrounded by two tree lines in FIG. 3, the addresses of that area are not consecutive.

Therefore, as end address data B2, store the right end address of the most partition in the area surrounded by two tree lines, and when accessing the middle partition, start address data Bl, end address data If you add 24 to each B2 and access the lower section,
CPUfl(%
I understand. In this way, adding multiples of 24 is
This is because each partition has 24 areas, so the address of each partition is indicated by a number obtained by adding a multiple of 24 to the 7 addresses of the top partition.

In step S3, if the flag A is "θ", the shortened address data B is not added, so the entire memory area of the selected character data is accessed according to normal processing, and the selection is made with the normal character area width. Characters are displayed or printed (step S5), step S4. S5
When the display or printing process is completed, the first step is step S.
Return to step 2 and perform the processing in the 1 character area width shortening mode for each character. If the character area width shortening mode is not set in step Sl, flag A and shortened address data B are set to normal without reno search. In order to access the entire memory area of the character data selected according to the process, it is displayed or printed with the normal character area width (step S6).
In this way, the character data to which the unique shortened address data B is added has its character area width reduced in the character area width reduction mode.

Note that in this embodiment, since a 1-bit flag is used as the 1-character area width reduction information storage stage, only two character area widths can be selected. By configuring , more character area widths can be selected.

[Effects of the Invention J] As explained below, the present invention is capable of reducing the width of a narrow area when a character area width shortening instruction is given to character data having both shape information such as one character and character area width information. Since character data to which address information indicating ``()'' is added is read out based on the address information (), (), it is possible to narrow the character area width according to the unique character width of the character and the manner of use. A character generation method can be realized.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the present invention, and FIG. 2 is a system configuration diagram to which an embodiment of the present invention is applied. 3 and 4 are structural diagrams of the character generator of FIG. 2, and FIG. 5 is a flowchart showing the operation of FIG. 2. ■... Mode determination r stage, 2... Shortened information storage means, 3... Shortened address storage means, 4
...Character generator. Patent Applicant Casio Computer Co., Ltd. Agent Patent Attorney Masashi Toshi Town 10 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In a character generation method using character data including shape information of characters/symbols, etc. to be displayed or printed and character area width information, a mode determining means for determining whether or not a character area width reduction mode is set; A shortened information storage means that stores shortened information for the width information and a shortened address storage means that stores a read address for the character data according to the shortened information stored in the shortened information storage means, and when the character area width shortened mode is set. The character generation method is characterized in that the character data is read based on the read address.