JPS59180583A - Character pattern generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a character pattern generating device in a printer, display device, printing device, etc. that prints and displays character patterns using a dot matrix method.

[Technical background of the invention and its problems]

Conventionally, character patterns in, for example, dot matrix type printers are patterns consisting of a predetermined order and number of data in a fixed area 1 in a memory only for entertainment (hereinafter referred to as FROM), as shown in Figure 1. was remembered as. When printing, when a printing character code is input, the storage area 2 of the corresponding character is read out, the printing data is temporarily stored in the printing data bath, and then the printing is performed under the control of the printing control section.

However, according to the conventional storage format of character patterns,
Since the pattern storage size for each character pattern is common, blank 3, which is useless as a character pattern, is also stored in 10M as data. Therefore, there was a problem in that a huge amount of memory capacity was required as a whole.

[Purpose of the invention]

The present invention has been made in consideration of the above circumstances, and it is an object of the present invention to provide a character pattern generating device that has a relatively simple configuration and can reduce the storage capacity of character patterns.

[Invention Woman]

In order to achieve the above object, a character pattern generating device according to the present invention includes a pattern portion storage device that stores a pattern portion obtained by removing a blank portion from a character pattern, and a pattern portion storage device that stores the size of the pattern portion stored in the pattern portion storage device. a pattern size storage device for storing the character width of the character pattern; a character spacing storage device for storing the character width of the character pattern; and a size of the pattern portion drawn in the pattern size storage device and the character width stored in the character width storage device. a blank calculation means for calculating the size of a blank part of an output character Bakun from the above, and an output character pattern is synthesized from the pattern part stored in the mJ pattern part storage device and the size of the blank part calculated by the blank calculation means. The present invention is characterized by comprising a character pattern synthesis device.

[Embodiments of the invention]

FIG. 2 shows a printer having a character pattern generating device according to an embodiment of the present invention. This printer consists of a printing section 4, a printing control section 5, and a character pattern generating device 100.

The character pattern generator t100 generates a character pattern corresponding to the input character code, and the character pattern generated by the character pattern generator 100 is printed by the printing unit 4 by the print control unit 5. The character pattern generating device 100 includes a pattern portion storage device 103 that stores the pattern portion of a character pattern, and a pattern size register 1.1 that stores the size of this pattern portion. has a device 102 and a character width storage device 101 that stores the character width of the character Bakun. These are specifically ROMs, and the third
(As shown in this figure, the pattern part storage area 13 stores the pattern part 12 obtained by removing the blank part from the character pattern, the pattern size table 14 stores the size of the pattern part, and the actual size including the pattern part 12. The ROM is composed of a character width table 15 storing the character widths to be printed on the ROM.This ROM is created in advance according to the character patterns Maki and Kenze.

The character pattern 1 generation device 100 further includes a blank calculation means 104 and a character pattern synthesis device 1f105. The blank calculation means 104 is a character 11g storage device 1.
The character width and pattern size memory stored in 01 (@
- Calculate the size of the blank part of the character pattern to be output from the size of partial pattern ■2 stored in 102,
do. The blank portion calculated by the blank calculation means 104 and the pattern portion stored in the pattern portion storage unit 103 are combined into an output character pattern by the character pattern synthesis device 105.

At the time of this synthesis, the pattern part storage area] 3, the pattern size table 14, the character width table 15, the start address table J6 containing the start address of the pattern part 12, and the character pattern buffer in the character pattern synthesis device t105. The relationship with 17 is as shown in FIG. That is, the pattern portion 12 of the character pattern buffer 17 is the content of the pattern portion storage area 13 from the address specified in the start address table 16 to the size specified in the pattern size table 14, and the blank in the character pattern buffer 17 is The character width of the character pattern including up to part 3 matches the character width of the character width table 15.

Next, the operation of the character pattern generator according to this embodiment will be explained in the fifth section.
This will be explained using FIG. First, a head address table 6 is created in advance. First, the first address of the character pattern of the character type is stored in the PA by a character type designation command sent prior to the print character code (step 2). Next, the youngest code number for that character type is X
(Step ■). Next, take BST (x) of "Character pattern size table" 4.
By updating Ai, the first address FAT (X) of the first address table 16 is created (steps ① to ①).

The character pattern to be printed when the next printing character code is input is generated as shown in θ2. The input character code number is stored in X (step ■), and the entry LST (x) on the character width table 15- corresponding to this character code number and the pattern size table 14
Once the upper entry BST (x) is determined, data LS and TS corresponding to the width of the necessary blank portion 3 before and after the butter 7 portion 12 are calculated from these (step ①). Thereafter, the data LS of the flank part 3 is stored in the address PSA of the character pattern buffer 17 (steps -Q), and one more head address table 16 is stored.
The pattern part 12 of the pattern part storage area 13 for the start address FAT(X), etc. is stored in the address PSA for the end ')BST(x) of the pattern size table 14 (steps O to o), and furthermore, the character pattern / X sofa 17 address PSA flank part 3
The data TS is stored (step 4° C.~@).

In the above embodiment, a dot matrix type splitter has been described, but the present invention can also be applied to other printing devices and display devices such as CRTs. . Furthermore, the pattern to be generated may be a figure or symbol other than characters.

〔Effect of the invention〕

As described above, according to the present invention, it is sufficient to store only the pattern portion in the writing device W, so that a large number of character patterns can be stored and generated with a small memory capacity. Furthermore, even if the character types are different, it is enough to just glance at the ROM in which the character patterns are stored without changing the firmware.

[Brief explanation of the drawing]

Figure 1 is a conventional character pattern generator! FIG. 2 is a pattern diagram showing the storage format of character patterns in tl. FIG. 3 is a block diagram of a printer having i-, FIG. 3 is a pattern lΔ showing the storage format of character patterns in the device, FIG. 4 is a pattern diagram showing the relationship between the storage format of character patterns and the character pattern buffer, and FIG. FIG. 6 is a flowchart showing the operation of the device. 2...Character pattern, 3...Blank part, 4...
・Printing section, 5...Print suppressing section, 12...Pattern section, 13.Pattern section storage area, 14.Pattern size table, ]5...Character width table, 1...Start address table, J7...Character pattern buffer,
100...Character pattern original throat is straight 〇 out, Yoshihito agent Tsuma Mata? -80' Procedural amendment written May 11, 1920, Director General of the Japan Patent Office Kazuo Wakasugi 1. Indication of the case, Showa era Patent Application No. 55555 2. Name of the invention Character pattern generator 3. Person making the amendment Relationship with the incident Special i? 'l'' Applicant (307) Tokyo Shibaura Electric Co., Ltd. 7, Drawing subject to amendment 8, Contents of amendment: Engraving of drawing (no change in content) 809-

Claims (1)

[Claims] A pattern portion storage device that stores a pattern portion obtained by removing a blank portion from a character pattern, a pattern size storage device that stores the size of the pattern portion stored in the pattern portion storage device, and a character width of the character pattern. a blank calculation means for calculating the size of the blank portion of the output character pattern from the size of the pattern portion stored in the pattern size storage device and the character width stored in the character width storage device; A character pattern generation device comprising a character pattern synthesis device for synthesizing an output character pattern from the pattern portion stored in the pattern portion storage device and the size of the blank portion calculated by the blank calculation means.