JPH0810396B2 - Character pattern control method - Google Patents

Description

The present invention relates to a character pattern control method for controlling the storage of a character pattern created according to enlargement / reduction information from a basic pattern. For the purpose of a cost-effective character pattern control method, in a character pattern generator, character pattern group storage means for storing a character pattern group created from a basic pattern in accordance with enlargement / reduction information, and the character pattern group storage means Arrangement information storage means for storing the arrangement in the character pattern group storage means and management means for managing the character pattern group storage means and the arrangement information storage means for each character pattern group are provided.

[Industrial applications]

The present invention relates to a character pattern generator that generates a character pattern, and more particularly to a character pattern control method for controlling storage of a character pattern created according to enlargement / reduction information from a basic pattern.

[Conventional technology]

In a display device such as a CRT display or a printer device, as the amount of information increases, it is required to display the information, that is, to speed up the so-called character display.

Conventionally, in a printer device, a character generator in the device holds a basic pattern having enlargement / reduction information, and when drawing each character, enlargement / reduction according to the designated character size. However, this method requires a processing time for enlarging / reducing each character drawing, which makes it impossible to meet the recent demand for speeding up.

Therefore, at present, when the character pattern is registered, the basic pattern is, for example, 7
It has become possible to use the method of enlarging / reducing the size to 12 or 12 and holding it in the device with the image at the time of drawing. With this method, a character pattern of a desired size can be immediately read out at the time of drawing.

FIG. 5 is a block diagram of the above-mentioned conventional character pattern control. A pattern memory (not shown) stores a basic pattern and enlargement / reduction information. Based on the basic pattern and the enlargement / reduction information, the size of each character, for example, 7, 9, 12
Generates a pattern for the character generator CG (Ch
aracter Generator). In order to manage the patterns stored in this character generator CG, a CG control information table CDV (Character Description Value) and a character code conversion table TT (Translated Table) are provided. The character code conversion table TT is for 9 ports each
The area is divided into TT1, TT2 for 7-po and TT3 for 12-po, and the numbers in the CG control information table of each character are stored according to the character size. The CG control information table CDV stores the start address of the pattern stored in the character generator CG.

When the character code to be displayed is input, the CDV number of the CG control information table CDV corresponding to each code stored in the character code conversion table TT is obtained. For example, 9-port table TT1, 7-port table TT2, 12-port table TT3
Each of them stores the CDV number of the character code'ABCD '. The pattern corresponding to the character code'ABCD 'is stored in the CG independently for 9-po, 7-po, and 12-po. From the CDV numbers for each character type 9-po, 7-po, and 12-po, access the area corresponding to that number in the CG control information table CDV, and use the 9-po CG address and 7-po
Read the CG address and CG address for 12-port. Then, a pattern corresponding to the size of each character is read out from the character generator CG and obtained.

[Problems to be Solved by the Invention]

In the above-mentioned conventional method, character sizes of 7, 9, and 12 characters used by a printer or the like are created in the apparatus for each character and held on the CG. In order to hold each pattern on this character generator CG, as described above, the CG control information table CDV and the character code conversion table T
T has to have tables for 7, 9 and 12 ports, respectively. For example, each table is needed for 7, 9, and 12 ports. Therefore, the character code conversion tables TT, CG
There is a problem that the control information table CDV requires three times as much as the storage time of the basic pattern (for 7, 9, 12 ports).

Further, for one character code, the information that the pattern of the character code has been registered must be set in the character code conversion table TT for the number of characters created by the enlargement / reduction information. There is a problem that the increase / decrease of the pattern further promotes the increase of the character pattern registration time.

An object of the present invention is to manage a character pattern group as a unit to speed up the process and reduce the cost.

[Means for solving the problem]

FIG. 1 is a block diagram of the present invention. The present invention relates to a character pattern generator.

The character pattern group storage means 1 stores a character pattern group created from a basic pattern according to enlargement / reduction information. The character pattern group is, for example, a fixed number of patterns that differ depending on the size of the character.

The arrangement information storage means 2 stores the arrangement, that is, the address in the character pattern group storage means 1 that stores each of the character pattern groups.

The management unit 3 controls the storage position in the character pattern group storage unit 1 and the storage of the storage position in the arrangement information storage unit 2 for each character pattern group.

[Action]

When the character pattern is input, the management unit 3 secures an area in the character pattern group storage unit 1 in which one character pattern group corresponding to the character code is to be stored, and the arrangement information storage unit is stored in the area. The pattern created by the enlargement / reduction information is stored in accordance with the arrangement information for each character size stored in 2.

When reading, the management unit 3 adds the relative address in the one character pattern group for each character size stored in the layout information storage unit 2 to the address in the unit of one character pattern group. The character pattern group storage means 1 is accessed and read from the address.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a conceptual diagram of the present invention. The CG control information table CDV1 stores addresses in the character generator CG1 corresponding to the codes of each character pattern group. That is, the CG address corresponding to the character code'ABCD 'or'ABC
The CG address corresponding to E'and the CG address corresponding to'ABCF 'are stored. This CG address is
The head address of the area for storing each one-character pattern group in the character generator CG1 is designated.

In the areas D, E, and F designated by each CG address, pattern groups created from the basic pattern of'ABCD ',
Area E stores a pattern group created from the basic pattern of'ABCE ', and area F stores a pattern group created from the basic pattern of'ABCF'. A plurality of character sizes n and m are stored in this pattern group, respectively. Alternatively, the number may be one.

In the embodiment of the present invention, the CG control information table CDV1 described above has a pattern arrangement information table FDV in addition to the character generator CG1. The pattern arrangement information table FDV is provided corresponding to each character size.
The pattern of size m in the area F storing the pattern group created from the basic pattern of F ′ is shown in the shaded area and the size n
Pattern is stored in the shaded area. The address at the upper left end of each area is ΔXm, ΔY for size m
The arrangement information is stored by setting ΔXn and ΔYn for m and size n.

With the above configuration, a pattern consisting of a plurality of patterns, that is, a pattern of ABCD, for example, is set as one pattern of the character, and data of 9 points, 7 points, 12 points, etc. are collected together for one pattern. Since one pattern is stored, the position where the pattern is stored can be obtained with 1/3 of the information as compared with the conventional one.

FIG. 3 is a block diagram of an embodiment of the present invention. As described above, the CG control information table CDV1 is stored in correspondence with the character code forming each character. This correspondence is obtained from the character code conversion table TT10. The character code conversion table TT10 corresponds to one character code pattern, that is, one character pattern such as'ABCD 'or'ABCE' and the CD
The V number is stored, and the CG control information table CDV1 is accessed from this CDV number to obtain the start address in the target character generator.

The character code conversion table TT10 stores a character code such as'ABCD 'and its CDV number in association with each other, and one code stores one CDV number. For example, the character code is used as an address and the CDV number corresponding to the code is stored. Further, the character code and the CDV number are stored in the character code area and the CDV number area, respectively. Conventionally, character code conversion tables TT1, TT2, TT3 are provided corresponding to the character sizes, and CDV numbers of each character size corresponding to the same code in each character code conversion table TT1, TT2, TT3. CG control information table CDV
, The CG address corresponding to the character code is stored, but according to the present invention, since it is collectively managed, the memory information becomes 1/3. Also, according to the pattern arrangement information table FDV, the 9-port FDV, the 7-port FDV, 1
In the 2-port FDV and the pattern layout information table, for example, pattern layout information such as a 9-po pattern area in 0 to α and a 7-po pattern area in 0 to β is stored. It is possible to obtain the storage address corresponding to that.

As shown in Fig. 3, the pattern group created from the basic pattern of'ABCE 'stores the pattern layout information for 9 ports in FDV1, 7 ports in FDV2, and 12 ports in FDV3. Therefore, the information corresponding to the target character size can be accurately obtained.

When registering the pattern group created by the basic pattern, the start address (address to be stored) of the area in the CG is set in the CG control table CDV1 and the CDV1
It can be registered by storing it in the character code conversion table TT10 corresponding to the number in the table. On the other hand, when it occurs, that is, when drawing is performed, the opposite may be followed. FIG. 4 is a processing flowchart of the embodiment of the present invention. When the character code is entered (S2), the character code conversion table
Obtain the CDV number by referring to TT10 (S3). Next, the FDV number is obtained from the character size (S4). From this CDV number, the start address of the memory for storing the pattern corresponding to the character code in the character generator CG1 is obtained from the CG control information table CDV1 (S5). Then, the in-pattern layout information of the target character pattern group is obtained from the FDV number obtained in step S4. Then, the CG address of the pattern of the specified character size is obtained from the CG address and the pattern arrangement information, and the character arrangement information for the drawing reference point is obtained from the FDV number and drawn (S7 to S8).

With the above operation, the conventional CG control information table CDV, and further, the character code conversion table TT, even if the same character code, if the pattern is different depending on the size of the character, it corresponds Although it was necessary to provide a CG control information table and a character code conversion table for each type, according to the present invention, it is sufficient to provide a character code conversion table and a CG control information table corresponding to one character code. The capacity can be reduced.

Also, when searching the character code conversion table, corresponding to each character size, that is, 9
Since it is not necessary to search for the Po, 12-Po, etc., one character code is searched sequentially to find the area storing the target pattern, and then the position is found from the pattern layout information table. The memory may be small and the time required for the search can be shortened.

〔The invention's effect〕

As described above, according to the present invention, it is possible to perform a high-speed processing, reduce the memory, and obtain a cheaper and faster character pattern control system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of the present invention, FIG. 2 is a conceptual diagram of the present invention, FIG. 3 is a configuration diagram of an embodiment of the present invention, and FIG. FIG. 5 is a configuration diagram of a conventional character pattern control of the embodiment. 1 ... Character pattern group storage means, 2 ... Arrangement information storage means, 3 ... Management means.

Claims (3)

[Claims] 1. A character pattern group storage means (1) for storing a character pattern group created from a basic pattern according to enlargement / reduction information in a character pattern generator.
An arrangement information storage means (2) for storing the arrangement of each of the character pattern groups in the character pattern group storage means (1), and the character pattern group storage means (1) and A character pattern control method comprising: a management means (3) for managing the arrangement information storage means (2). 2. The character pattern group comprises a fixed number of patterns corresponding to a character size.
Character pattern control method described. 3. The management means (3) stores a head address for storing a character pattern group in the character pattern group storage means (1) corresponding to a character code, and the arrangement information storage means (2). 3. The character pattern control method according to claim 2, wherein a relative address within the area of the character pattern group stored in the character pattern group storage means (1) is stored corresponding to the character size.