JPH02271394A - Font reduction system - Google Patents

Abstract

PURPOSE:To increase the processing speed and to enable reduction with uniform line thickness by varying and controlling the deletion of a specified line, etc., of an original pattern according to whether or not there is a lateral line pattern. CONSTITUTION:The original font which is stored in a font memory 4 has a line pattern deleted by the number of lines corresponding to a command by a font reduction part 5 through a processing part 2 which is driven by a keyboard 1 and the deletion is performed only in one direction to enable substantially fast processing. At the same time, a reduction part 5 decides whether or not there is a lateral line pattern and when there is a lateral line pattern, deleted lines are shifted in order and the deletion processing to perform the excellent reduction where the thickness of lateral lines, etc., of a font is uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a font reduction method that is used in information processing devices such as word processors and which reduces the font of characters or graphics.

(b) Conventional technology Characters with multiple types of points (multi-point characters)
In devices capable of displaying or printing, the original font representing characters or figures is generally stored in a font memory in advance, and when a character size is specified, the original font is processed according to the specified character size. , I am trying to generate a reduced font.

A conventional example of such font reduction is disclosed in Japanese Patent Application Laid-Open No. 59-53.
This is disclosed in Publication No. 42, and in the same publication, based on dividing the patterns constituting the font into blocks and taking a majority vote of "J * ' OJ within the block,
The font was reduced.

Furthermore, the simplest method is, for example, when reducing a 48x4B dot font only in the vertical direction to generate a 44x48 dot reduced font, 2.14, 26.
A designated line is set uniformly every 12 lines, such as 38 lines,
There was a method to delete the line pattern of this specified line.

(c) Problems to be Solved by the Invention Among the conventional techniques, the former method disclosed in the above publication is
Since the processing is complicated, it takes too much processing time and a long time is required for display or printing. On the other hand, in the latter method, the processing time is extremely short, but if a horizontal line happens to be included in the specified line, that horizontal line will be erased by deleting the line pattern.
Only some of the horizontal lines of the characters become thinner.Also, when the latter method is applied to the column pattern, if the specified column contains vertical lines, the vertical lines will be erased by deleting the column pattern. As a result, only the J [ of the character -i becomes thinner, and the overall balance of the font may become unbalanced, resulting in a font that looks bad.

(2) Means for Solving the Problems The present invention provides a font reduction method that generates a reduced font by deleting a line pattern of an original font, in which a check is made to determine whether or not a horizontal line pattern exists in a deletion designated line of the original font. The above problem is solved by determining and deleting the line pattern of the deletion specified line if it does not exist, and if it exists, sequentially changing the deletion specified line to the next line or the previous line and performing the determination and deletion process. It is something to do.

Further, in the font reduction method of generating a reduced font by deleting the column pattern of the original font, the present invention determines whether a vertical line pattern exists in the deletion specified column of the original font, and if it does not exist, The above-mentioned problem is solved by deleting the column pattern of the deletion designated column and, if it exists, sequentially changing the deletion designated column to the next column or the previous column and performing the determination and deletion processing.

(e) Effect In the present invention, row patterns that do not include horizontal line patterns or column patterns that do not include vertical line patterns are deleted from the original font, so that the thickness of horizontal or vertical lines of characters or figures is uniform. A reduced font is generated.

(F) Embodiment FIG. 2 is a block diagram showing the configuration of a word processor that implements the present invention. (4) is a font memory that stores original fonts of characters and figures; (5) is a font reduction unit that reduces the original font read from the font memory; (6) and (7) are the storage memory and expansion memory that can be used for reduction processing, (8) is the VRAM where the font of display characters is written, <9) is the print buffer where the font of print characters is written, and (10) is the display a control section, (11) a print control section, and (12)
is a display, and (13) is a printer.

When the standard character size is specified on the keyboard, the processing unit (2) reads the original font corresponding to the character code read from the text memory (3) from the font memory (4), and stores it in the VRAM (8) or for printing. buffer(
However, if a smaller font size is specified, the processing unit (2) writes to the font reduction unit (5).
is activated, and the original font read from the font memory (4) is stored in the storage memory (6). The font reduction node section (5) reduces the original font in the storage memory (6) according to the specified character size, expands the reduced font onto the expansion memory (7), and then processes the original font in the storage memory (6). )
reads the reduced font from the expansion memory (7) and
M<8) or write to print buffer (9).

The processing contents of the font reduction section (5) will be explained in detail below with reference to the brooch yard in FIG.

First, an example will be given in which a 48x4B dot font is reduced only in the vertical direction to a 44x48 dot font.

The font reduction unit (5) first selects a deletion designation line (LINE
) are set uniformly every 12 lines as the 2, 14, 26, and 38th lines. Then, the line pattern of the original font is sequentially read line by line from the first line while determining whether it is in the storage memory (6) (L I NE), and if it is not a line designated for deletion, it is transferred to the expansion memory (7). The row patterns read out are sequentially written into m, *, and if the read row is a row designated for deletion, it is determined whether or not there is a horizontal line pattern among the row patterns read out, and m, * C0UN if pattern does not exist
(increment of T) and update of the deletion designated line (increment of l). In other words, the read line pattern is deleted. On the other hand, when a horizontal line pattern exists, the read line pattern is written to the expansion memory (7) as in the case of lines other than the lines specified for deletion, and then ) to the next line (LINE+1) and repeat the same determination.

In this embodiment, a dot pattern of 10 or more consecutive dots is defined as a horizontal line pattern, and when this dot pattern is present in a row pattern, it is determined that a horizontal line is included.

In the case of the font rbi shown in Figure 3, there is no horizontal line pattern in the line pattern in lines 2, 14, and 38 of the lines specified for deletion, so the reduced font is expanded in the expansion memory (7). In (14), the line pattern at lines 2, 14, and 38 of the original font (15) is deleted, as in the conventional example shown in FIG. However, since there is a horizontal line pattern in the line pattern of the 26th line of the original font (15), the deletion specified line (LINE) is the 27th line of the next line.
It is determined whether a horizontal line pattern exists in the row pattern of this row. In this example, since there is no horizontal line pattern, in the reduced font (14), the line pattern in the 27th line of the original font (15) is deleted, and the thickness of the horizontal lines becomes uniform.

In the conventional example shown in Fig. 4, the line pattern of the 26th line, which was initially set as the deletion designated line, is deleted as is, and in the reduced font (16), the horizontal line in that part becomes thinner locally. ing.

By the way, in this embodiment, in order to deal with a solid font with a pure black negative side, if there are 12 consecutive horizontal line patterns from the first deletion designated line, the 12th line pattern will be deleted. I have to.

Next, FIG. 5 shows an example in which a 48x4B dot font is reduced only in the horizontal direction to a 48x44 dot font. In this case, the same process is performed on the column pattern instead of the row pattern. It is sufficient to determine whether there is a vertical line pattern.

That is, first, the deletion designated lines are set as lines 2, 14, 26, and 38, and the column pattern of the original font in the storage memory (6) is read out in order from the first line for each column, and the read column is deleted. If it is not the specified column, the read column pattern is stored in the expansion memory (
7), if the read column is the set deletion designation da, it is determined whether or not there is a vertical line pattern in the read column pattern, and if there is no vertical line pattern, the The readout column pattern is not written to the expansion memory (7), but only the readout column and the deletion designated column are updated. Also, when a vertical line pattern exists, the readout column pattern is expanded to the expansion memory (7). Then, the deletion specification column is sequentially changed to the next column, and the same judgment is repeated.

Therefore, in the case of the "product" font in Figure 5, vertical line patterns exist in the 14th and 38th columns of the original font (18), so the deletion specified column is the 15th column where no vertical line pattern exists. Column 1 and 39th column are changed, and these column patterns and 2nd subject and 26th subject
The column pattern of the column is completely deleted from the original font (18), and a reduced font (17) is generated.

Therefore, unlike the conventional reduced font (19) in FIG. 6, the vertical lines are uniform.

Note that the deletion designated row or deletion designated column does not necessarily need to be changed to the next row or column, but may be changed to the previous row or column.

In the embodiment described above, the original font (15)
Although only the row pattern or column pattern of the designated deletion row or designated column in (18) is deleted, it is also possible to reflect the characteristics of the deleted row or column pattern in the reduced font.

That is, as shown in FIG. 7, when a deletion designated line without a horizontal line pattern is determined, a reduced font can be generated by deleting the line pattern of the deletion designated line, as in the expanded method example, and the deletion designated line can also be deleted. Features of the row pattern of a row can be included in the row pattern of the preceding row. Of course, it can be similarly applied to column patterns, and furthermore, the OR process does not have to be limited to the previous row, but may be applied to the next row of the deletion designated row or the next column of the deletion designated column.

(←) Effects of the Invention The font reduction method according to the present invention can generate reduced fonts through simple processing, so it can speed up the processing, shorten the time required for display or printing, and reduce the thickness of horizontal or vertical lines. can produce uniformly balanced and beautiful reduced fonts.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a word processor that implements the present invention, and FIGS. 3 and 5 show examples of fonts reduced by the method of the present invention. 4 and 6 are diagrams showing examples of fonts reduced by the conventional method, and FIG. 7 is a main part flowchart showing another embodiment of the present invention. (1)...Keyboard, (2)...Processing unit, (
4)... Font memory, (5>... Font reduction unit, (6)... Storage memory, 7)... Expansion memory, (12)... Display, (13)...
・Printer, (14) (16) (17) (19)...
- Reduced font, (15) (18)...original font.

Claims (2)

[Claims] (1) In a font reduction method that generates a reduced font by deleting the line pattern of the original font, it is determined whether a horizontal line pattern exists in the deletion specified line of the original font, and if it does not exist, the deletion specified line A font reduction method characterized in that the determination and deletion process is performed by deleting the line pattern of , and if it exists, sequentially changing the deletion specified line to the next line or the previous line. (2) In a font reduction method that generates a reduced font by deleting the column pattern of the original font, it is determined whether a vertical line pattern exists in the deletion specified column of the original font, and if it does not exist, the deletion is specified. A font reduction method characterized in that the determination and deletion process is performed by deleting a column pattern of a column and, if it exists, sequentially changing the deletion designated column to the next column or the previous column.