JPH0324975A - Character processor - 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 [Field of Industrial Application] The present invention relates to a character processing device that can develop bitmap data obtained by digitizing characters or symbols and output the character data to an output device.

(Prior Art) Conventionally, in this type of character processing device, a digital image of a character or symbol is developed on a bitmap memory and the output character data is transferred to a bitmap display or a printer device as an output means. It is configured.

[Problem to be solved by the invention]

By the way, in the above device, when changing the size of a device that uses bitmaps to express characters or symbols to be output, it is necessary to have bitmaps of all necessary point sizes, which is extremely difficult. There was a problem in that it required a large memory capacity, resulting in a very expensive device.

The present invention was made to solve the above problems, and the present invention has been made in order to solve the above problem. An object of the present invention is to obtain a character processing device capable of generating high-quality modified bitmap data from the same bitmap without degrading character quality by executing logical operations.

(Means for Solving the Problems) A character processing device according to the present invention performs logical operations in a predetermined direction with adjacent bits adjacent to a bit of interest of bitmap data aligned and expanded in a bitmap memory by an expansion means. This system is provided with a calculation means for sequentially calculating modification bit data during execution, and a development control means for controlling sequential development of the modification bit data calculated by the calculation means in the bit 1 map memory.

[Effect]

In this invention, when the bitmap data is expanded in the bitmap memory by the expansion means, the calculation means sequentially calculates the modified bit data while performing logical operations with adjacent bits adjacent to the bit of interest in a predetermined direction. The expansion control means sequentially controls expansion of the modified modification bit data onto the bitmap memory, thereby making it possible to generate a desired modification bitmap on the bitmap memory.

〔Example〕

FIG. 1 is a block diagram illustrating the structure of a character processing device according to an embodiment of the present invention, and 1 is a character processing device main body;
Reference numeral 2 denotes a CPU, which performs comprehensive C control on each device based on a control program stored in the program ROM 4 (including procedures in flowcharts shown in FIGS. 2 and 3, which will be described later). Reference numeral 3 denotes an input section for inputting instruction data regarding character modification.

A character font ROM 5 stores font patterns related to characters and symbols.

6 is RAM, which functions as a work memory for CPU2,
A pattern development section 6a is provided for developing the modified bitmap pattern, and the bitmap data developed in the pattern development section 6a is outputted to an output section 7, and characters, symbols, etc. are displayed or printed. Become. Note that R becomes a bitmap memory by the expansion means 2a.
When the bitmap data is expanded to AM6, the operation stage 2b sequentially calculates the modification bit data while performing logical operations with the adjacent bits adjacent to the bit of interest in a predetermined direction, and controls the expansion of the calculated modification bit data. The means 2c sequentially performs expansion control on the bitmap memory (RAM 6) and generates a desired modification bitmap on the pattern expansion section Sa.

Next, the operation shown in FIG. 1 will be explained with reference to FIGS. 2 and 3.

FIG. 2 is a flowchart showing an example of a character processing procedure according to the present invention. Note that (1) to (6) indicate each step.

First, when power is supplied to this device, it waits for instruction data such as which character to modify to be input (1), and the instruction data is input from the input section 3 to the switch. When input by an input signal, etc., it is determined whether the input instruction data is an end 7 command (2) If YES, the process is terminated, and if NO, the corresponding bitmap pattern is transferred to the character font RO.
Search from M5 and expand on RAMB (3).

Next, a modification processing routine for the vertical direction, which will be described later, is executed (4), and a modification processing routine for the horizontal direction, which will be described later, is executed (5).Then, the expanded modification bitmap pattern is output to the pattern expansion section 6a. (6) The process ends.

FIG. 3 is a flowchart showing an example of a bitmap modification processing routine according to the present invention. In addition, (1) to (
8) shows each step. Also, the contents in parentheses indicate the content of horizontal modification processing, which will be explained below using vertical processing as an example. Below, the fourth
The bit IA theory will be explained with reference to the figures and FIG.

First, the character code (3022
) corresponding to the 24x24 character pattern "唖" in RAM.
5, access each column going from the top or left of the bitmap and judge whether processing has been completed up to the lowest column going to the bottom (1) If YES, end the process. , if No, the previous column shifted by 1 bit to the right and upward, and the current column
Execute the AND operation (see Figure 5 (a)) with NOT (see Figure 5 (a)), which shifts 1 bit to the right and upward, and shifts 1 dot to the left and downward of the previous column. Execute the AND process (see Figure 5 (b)) with the result obtained by shifting the current column by one dot to the left and downward (3), and then perform the AND process (3), and then perform the AND process (see Fig. 5 (b)).
3) and the previous column (see FIG. 5(c)) is executed (4).

Then, the previous row (column) that is currently being accessed is shifted by 1 bit to the right and upwards, ε, the current column is shifted by 1 dot to the right (upward), and the next OR (
(See Figure 5(d)) (5). Next, the previous column that is currently being accessed is shifted to the left and downward by 1 dot, and the currently accessed column is shifted to the left and downward by 1 dot. OR with the next row (column) shifted one dot to the left (see Figure 5 (e)) (6). Next, combine the value of step (5) with the value of step (6). The AND result is ANDed with NOT in the next row (see FIG. 5(f)) (7).

Next, the value obtained by ORing the value of step (4) and step (7) is ANDed with the current column> (
(see FIG. 5(g)), written in the pattern development section 6a,
Move to the write column and the access column (8
), return to step (1).

As a result, a high-quality decorated character pattern (in this embodiment, narrowed modification) can be generated as shown in FIG. 4(b).

Note that in the above embodiment, predetermined logical operations are performed on the top, bottom, left and right sides of the pixel of interest. Although the case where the shift is performed for one diagonal dot has been described, the number of dots is not limited to one dot, but may be a plurality of dots, and the shifting direction may be shifted to only one direction.

Further, in the above embodiment, a case has been described in which the predetermined logical operation is executed by software processing, but it may be configured to be executed by a logic circuit configured by hardware to improve the processing speed.

Furthermore, this character processing device may function alone,
Even if it is incorporated into a part of another device, for example, a printing device or a display device, it does not depart from the spirit of the invention.

Further, in the above embodiment, the case where the bitmap pattern to be the expansion source is obtained from the character font ROM 5 has been described, but it may be downloaded from the host or generated from an outline font or the like and expanded into the RAM 6.

〔Effect of the invention〕

As explained above, the present invention sequentially converts modified bit data while performing logical operations in a predetermined direction with adjacent bits of bitmap data aligned and expanded in a bitmap memory by an expansion means. Since we have provided a calculation means for performing calculations and a development control means for sequentially controlling the expansion of the modified bit data calculated by this calculation means into the bitmap memory, high-quality modified bitmap data that has been modified in various ways from the same bitmap data is provided. can be generated. Therefore, it is freed from the conventional structure of having various biton map patterns resident, and character. The storage capacity of bitmap patterns for symbols can be significantly reduced, and inexpensive bitmap pattern processing can be realized.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating the configuration of a character processing device according to an embodiment of the invention, FIG. 2 is a flowchart showing two examples of character processing procedures according to the invention, and FIG. A flowchart showing an example of the map modification processing routine, and FIGS. 4 and 5 are schematic diagrams explaining the state of the bitmap modification processing according to the present invention. In the figure, 1 is the character processing device main body, 2 is the CPU, and 2a 2b is a calculation means, 2C is a development control means, 3 is an input section, 4 is a program ROM, 5 is a character font ROM,
6 is a RAM, 6a is a pattern development section, and 7 is an output section. Figure 1 Figure 3 (a) Figure 2 Figure 4 (b)

Claims (1)

[Claims] In a character processing device having a developing means for expanding bitmap data corresponding to a character or symbol into a bitmap memory, an adjacent bit adjacent to a target bit of the bitmap data aligned and developed in the bitmap memory by the developing means a calculation means for sequentially calculating the modified bit data while performing logical operations with the bits in a predetermined direction;
A character processing device comprising: expansion control means for sequentially controlling expansion of the modified bit data calculated by the calculation means into the bitmap memory.