JPS63274989A - Dot matrix character corrector - 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 devices such as printers and CRTs that print or display characters composed of dot matrices.

[Prior Art] In conventional character enlarging devices, when a basic dot matrix is enlarged vertically and horizontally by 2 N times, the basic dot matrix is simply enlarged by 2 N times, or A method with a unique dot matrix composed of N times 2 is adopted.

[Problems to be solved] In the above-mentioned prior art device for enlarging characters,
In the case of a method in which the basic dot matrix is simply expanded by N times 2, the length of consecutive dots in the vertical or horizontal direction is 2.
Since the number of dots is N times larger than that of the dot matrix, a defect occurs in that there is only one stepped dot in the diagonally structured dot matrix.

In addition, as a means to eliminate the above-mentioned drawbacks, if we have a unique dot matrix composed of 2 N times, it will require a huge amount of memory to store the dot data compared to a device that has only the basic dot matrix. The disadvantage arises that it requires

[Means for Solving Problems] The present invention solves the above-mentioned problems by enlarging a character composed of a dot matrix by 2 N times and printing or
This is a dot matrix character correction device for display, which has a character generator for storing one basic dot matrix, a basic search pattern for finding dot correction points, and expands horizontally and vertically with respect to the basic search pattern. A new dot matrix is generated by calculating the dot correction points in advance from the basic dot matrix and simply enlarging the basic dot matrix by 2 N times with the correction dots. and a means for doing so.

[Example] Hereinafter, examples of the present invention will be described in detail with reference to [7+ side].

In Figure 1, (1) means that the basic dot matrix is M
The character (2) consisting of columns and N rows indicates a dot matrix when the image is enlarged twice in the vertical and horizontal directions, and C in the figure indicates the position of the dot correction point. The basic search pattern is determined using A to P in FIG.

First, each row of the dot matrix is searched in the column direction, and the point at which a column moves from a column with no dots to a column with dots is determined. For example, in FIG. 1, point a (column 2, row 2) is the point.

Next, the point is applied to a dot matrix using dot 1 of the basic search pattern from A to H in FIG.
5, sequential comparisons are made to see if there is a basic search pattern that satisfies the condition that no dot exists.

At this time, if there is a basic search pattern that satisfies the above conditions, the coordinates of the dot correction point when each search pattern is enlarged twice vertically and horizontally are calculated using the calculation formula shown in FIG.

Also, each row of the dot matrix is searched in the column direction, and for the point where the dot moves from the column where the dot exists to the column where the dot does not exist, for example, point b (column 4, row 2) in Figure 1 (1). , This time, using the basic search pattern from ■ to P in Figure 2, similarly, apply dots to the dot matrix using dot 1 as a reference, and there are dots at 1 and 2, but 3,
Comparisons are made sequentially to see if there is a basic search pattern that satisfies the condition that no dot exists in 4.5.

At this time, if there is a basic search pattern that meets the above conditions, the coordinates of the dot correction point when each search pattern is enlarged twice vertically and horizontally are calculated using the following calculation formula.

Basic search pattern in Figure 2 Formula for calculating coordinates for Let the coordinates of dot 1 be (x, y).

Corrected coordinate formula (2x,
2y-2) B(2x-2,2y)(:
(2x, 2y-1) D (2x-2, 2y-
1) E (2x-2, 2y) F (2x, 2
y-2) G(2x-2, 2y-1) H(2x,
2y-1) I (2x-1, 2y-2) J(2
x+1,2y)K(2x-1,2rl)L(2
x+1,2y-1)M(2x+1,2y)N
(2x-1, 2y-2) 0 (2x+1, 2y-1)
P(2x-1, 2y+1) In the case of 4 times magnification of 2 times the length and width, there is always a correction point d for the dot as shown in Figure 1 (3) for the correction dot obtained by magnifying it by 2 times the length and width. I will do it.

Therefore, 4, 8, 16, etc. for the basic search patterns A to P in FIG. , , The coordinates of the N-fold dot correction point can be obtained by extending the above-mentioned calculation formula for the coordinates obtained by 2-fold enlargement in the vertical and horizontal directions.

By the above method, the basic dot matrix shown in Fig. 3 (1) is used to calculate dot correction points for 24 x 24 characters using the basic search pattern shown in Fig. 2 and the coordinate conversion formula shown in F. When the characters enlarged twice in the vertical and horizontal directions in Figure 3 (2) are combined with the correction dots, the characters shown in Figure 3 (3) are
A doubled dot matrix is obtained.

Note that FIG. 4 shows a block diagram of the apparatus in the present invention.

1 indicates a CPU that controls the present invention.

2 shows a character generator for storing the basic dot matrix.

3 indicates a memory for storing basic search patterns.

4 indicates a program and work memory for controlling the CPU.

[Effects of the Invention] According to the present invention, when a character composed of a dot matrix is enlarged vertically and horizontally by 2 N times, a huge amount of memory is required because the character does not have its own dot matrix composed of 2 N times. It becomes eye-catching when enlarged without having
This has the effect of making diagonal lines appear smoother.

In particular, it has the effect of being able to express kanji characters, etc. composed of dot matrices, without losing the Mincho font even if they are enlarged vertically and horizontally.

[Brief explanation of drawings]

FIG. 1(1) shows a character whose basic dot matrix is composed of M columns and N rows. FIG. 1(2) shows a dot matrix when the characters in (1) are enlarged twice in the vertical and horizontal directions. FIG. 1(3) shows a dot matrix when the characters in (1) are enlarged four times vertically and horizontally. A to P in FIG. 2 show basic search patterns in the present invention. FIG. 3(1) shows the character "Kan" whose basic dot matrix is composed of 24×24 dots. FIG. 3(2) shows a dot matrix in which the characters in (1) are simply enlarged twice in the vertical and horizontal directions. FIG. 3(3) shows a dot matrix resulting from correcting and synthesizing dots by means of the present invention. FIG. 4 shows a block diagram of the device according to the invention. 1: cPU 2: Character generator 3: Storage memory

Claims (1)

[Claims] A dot matrix character correction device that prints or displays a character composed of a dot matrix by enlarging it by 2 N times, the character being a character for storing one basic dot matrix. a generator, a means for having a basic search pattern for finding dot correction points and performing coordinate transformation when the basic search pattern is expanded vertically and horizontally; A dot matrix character correction device comprising means for generating a new dot matrix by combining a basic dot matrix enlarged by 2 N times and correction dots.