JPS63129397A - Correction of dot pattern - 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 <Industrial Application Field> The present invention relates to a dot pattern output device such as a word processor that enlarges and prints or displays characters, symbols, designs, etc. made up of dots.

<Prior Art> In general, in word processors and the like, data such as characters, symbols, designs, etc. input manually through an input device are edited and then printed or displayed as dot patterns.

Conventionally, in this type of device, in order to emphasize characters, symbols, designs, etc., enlargement processing was performed and outputted. Since the image was enlarged as it was, the step-like distortion of the sloped portion, which was expressed as dots, was also emphasized.

<Problems to be Solved by the Invention> In order to minimize the step-like distortion of the sloped portion due to the expansion of the dot pattern, the present invention corrects the sloped portion before the expansion process, and then corrects the sloped portion. It is an object of the present invention to provide a dot pattern correction method characterized by performing enlargement processing according to the pattern.

<Means for Solving the Problems> The dot pattern correction method of the present invention includes a text memory for storing codes indicating characters, symbols, designs, etc., and a dot pattern corresponding to the code output from the text memory. A character generator, a pattern buffer that temporarily holds the dot pattern output from the character generator, a dot pattern correction circuit that sequentially extracts and corrects dot information from the pattern buffer that holds the dot pattern, and a dot pattern correction circuit that enlarges the corrected pattern and sends it to the printer. Further, the dot pattern correction circuit sequentially extracts dot information from a pattern buffer holding the dot patterns and identifies dots to be corrected (hereinafter referred to as dots of interest). attention dot discrimination means for separating the attention dot from adjacent dots (hereinafter referred to as reference dots); and white/black discrimination means for instructing the operation of the reference dot analysis means described hereinafter depending on whether the attention dot is white or black. and a reference dot analysis means for determining a target dot shape @ (hereinafter referred to as a correction pattern) according to the black and white arrangement state of the reference dots, and a correction white pattern memory and a correction black pattern memory in which correction patterns are stored in advance. It is characterized by:

Function> The dot pattern correction method of the present invention sequentially selects a dot of interest and the dots adjacent to the dot of interest from a pattern buffer that holds dot patterns of characters, symbols, designs, etc. supplied from a character generator that stores dot patterns. The shape of the noted dot is replaced with a correction pattern according to the black and white arrangement state of the reference dot, and this correction pattern is enlarged to reduce step-like distortion in slope analysis that occurs when enlarging the dot pattern. It becomes possible to do so.

<Example> Hereinafter, the dot pattern correction method of the present invention will be explained in detail with reference to the drawings.

FIG. 1 compares the conventional case in which a dot pattern character "8" is enlarged and output as is, and the present invention in which the dot pattern character is enlarged and output after being subjected to dot pattern correction processing.

FIG. 2 shows operational blocks related to the dot pattern correction of the present invention. Reference numeral 1 denotes a text memory that stores codes indicating characters, symbols, designs, etc. that are sequentially supplied from the human resources department. Reference numeral 2 denotes a character generator which stores in advance dot patterns corresponding to characters, symbols, designs, etc., and outputs dot patterns corresponding to the codes supplied from the text memory 1. A pattern buffer 3 temporarily holds the dot pattern supplied from the character generator 2, and outputs this dot pattern to an output device such as a printer when enlargement processing is not performed. Reference numeral 4 denotes a dot pattern correction circuit that sequentially extracts dot information from the pattern buffer 3, performs predetermined correction processing, and then outputs the corrected pattern. 5 is an enlargement processing circuit that enlarges the correction pattern supplied from the dot pattern correction circuit.

FIG. 3 shows the dot pattern correction circuit 4 shown in FIG. 2 above.
This figure shows the internal operation blocks of the system, and the specific operation will be explained using FIGS. 4, 5, and 6.

The pattern buffer 3 temporarily stores the dot pattern sequentially supplied from the character generator 2, for example, for one line of characters, and in normal cases (no enlargement processing is performed), outputs it as is to an external output device such as a printer. death,
When printing or displaying, the dot pattern correction circuit 4 operates when enlarging printing or displaying.
First, information for 9 dots shown in FIG. 4 is taken in from the pattern buffer 3. The captured dot information is used to distinguish between a dot of interest and a reference dot by a dot of interest discriminating means 41. The dot of interest is sent to a white/black discrimination means 42, and the dot of interest is sent to a reference dot analysis means [1] 43 and a reference dot analysis means. [2] 44 respectively. The white/black discrimination means 42 discriminates whether the supplied dot of interest is a white dot or a black dot, and if it is a white dot, it gives an operation instruction to the reference dot analysis means [1] 43, and if it is a black dot, it gives an operation instruction to the reference dot analysis means [1] 43. If so, an operation instruction is given to the reference dot analysis means [2] 44.

As described above, each reference dot analysis means that receives an operation instruction determines a correction pattern according to the state of the supplied reference dot. In other words, the reference dot analysis means is instructed to operate when the noted dot is white [1]
43 indicates the reference dots adjacent to the left, top, bottom, and right of the dot X of interest as shown in FIG. When each of the reference dots is defined as A, B, C, and D, it is analyzed to see which conditions shown in FIG. 5<a> apply to each of the supplied reference dots. In the condition table shown in Figure 5 a, the mark indicates that the reference dot concerned is a black dot, the mark ○ indicates that the reference dot concerned is a white dot, and the mark ★ indicates that the reference dot concerned is a white dot. If at least one of the dots is white and all three dots are white, this indicates that the correction pattern should be completely white.First, reference dots 1, 2, 3, and 4 are analyzed to determine the matching condition. Next A・B-C within
- Analyze the reference dot of D. If the conditions are completely matched through this analysis process, information indicating a correction pattern corresponding to the conditions is output to the correction white pattern memory 45. Incidentally, if the reference dot does not meet any of the conditions shown in FIG. The correction pattern memory 45 is the fifth
The enlargement processing circuit 5 stores each correction pattern as shown in FIG. Output to.

Further, the reference dot analysis means [2] 44, which is instructed to operate when the dot of interest is black, analyzes the reference dots adjacent to the left, above, below, and right of the dot of interest X as shown in FIG. When reference dots adjacent to the upper left, lower left, upper right, and lower right are defined as A-B-C-D in 1, 2, 3, and 4, each of the supplied reference dots is shown in Fig. 6. This involves analyzing which conditions shown in <a> apply. The circle mark in the condition table shown in Fig. 6<a> indicates that the reference dot concerned is a white dot, the mark or no mark indicates that the reference dot concerned may be a black dot or a white dot, and the mark mark indicates that the reference dot concerned may be a black dot or a white dot. The endogeneity of two reference dots shows that it is good if at least one dot is black, and initially it is l, 2, 3,
Analyze the reference dot in step 4 and find the next A within the matching condition.
-B Analyze the reference dots C, -, and D. If the conditions are completely matched by this analysis process, information indicating a correction pattern corresponding to the conditions is output to the correction black pattern memory 46. If the reference dot does not meet any of the conditions shown in Figure 6 <, a>, the information "0" indicating all black is set.
is output to the corrected white pattern memory 46.

The correction pattern memory 46 stores each correction pattern as shown in FIG. The pattern is output to the enlargement processing circuit 5.

When the correction of one dot of interest taken out from the pattern buffer 3 in the above manner is completed, the dots following this dot of interest and the 8 dots adjacent to this dot are taken out of the pattern buffer 3 as the second dot of interest and reference dots. The data is extracted and corrected using the same process as described above. By performing this series of processing on all the dots held in the pattern buffer 3 and sequentially outputting the correction patterns to the enlargement processing circuit 5, the sloped portions as shown in FIG. 1<b> are corrected. Dot pattern characters can be printed or displayed enlarged.

Next, the corrected white pattern of FIG. 5 <b> and the corrected white pattern of FIG. 6 <b>
The form of the corrected black pattern of > is shown in FIG. 7 and will be specifically explained. FIG. 7 <3> shows one correction pattern when the dot of interest is white. In the figure, A indicates the vertical and horizontal diameters of the correction pattern, and the hatched area indicates the black area. This black area is 1/2 of the diameter A of the two sides that touch each other, or A/2
This is an area surrounded by the side connecting the points of
This area is set large in order to output patterns such as designs with emphasis on black. On the other hand, when outputting with emphasis on white, it is also possible to set this black area small.

Similarly, what is shown in FIG. 7<b> is a correction pattern when the target dot is black, where A indicates the vertical and horizontal diameters of the correction pattern, and the shaded area indicates the black area. This black area is the two sides A-n that touch each other from the AXA area.
/ This is the area obtained by removing the area surrounded by the side connecting two points and the side of A-n/2 diameter that touches each other, and in this example, the corrected patterns of characters, symbols, designs, etc. are emphasized in black. This area is set large so that it can be output. Note that, similarly to the above, when outputting with emphasis on white, it is also possible to set this area small.

<Effects of the Invention> As explained above, according to the dot pattern correction method of the present invention, a dot to be corrected (a dot of interest) and a dot adjacent to it (a reference dot) are sequentially extracted from the pattern buffer, and the dot of interest is used as a reference dot. Since the pattern is replaced with a pattern corresponding to the white/black arrangement state of the image and the pattern is enlarged, it is possible to prevent the step-like distortion of the inclined portion from being emphasized, which would occur with the conventional simple enlargement process.

[Brief Description of the Drawings] Fig. 1 is a diagram showing a comparison between a conventional enlarged dot pattern character and an enlarged dot pattern character according to the dot pattern correction method of the present invention, and Fig. 2 shows operational blocks related to dot pattern correction. Figure 3 shows the internal operation block of the dot pattern correction circuit, Figure 4 shows the dot of interest and the reference dot adjacent to it, and Figure 5 shows the case where the dot of interest is white. 6 is a diagram showing a correction condition table and corresponding correction pattern when the target dot is black, and FIG. 7 is a diagram showing correction patterns for white and black. This is a diagram. 1: Text memory, 2: Character generator, 3: Pattern buffer, 4: Dot pattern correction circuit, 5: Enlargement processing circuit Agent Patent attorney Itaru Sugiyama Kaori (and 1 other person) Figure 1 <α><b> 4J〈α〉4? M: At least one of the two dots is a black dot F. <α> 81st O5 4? 〈bn

Claims (1)

[Claims] 1. A dot pattern correction method for a device that reads out a pre-stored basic dot pattern and prints it out in an enlarged manner or displays it, the dots to be corrected in the dot pattern to be enlarged being corrected by a plurality of dots adjacent to the dot. A dot pattern correction method characterized in that the dot pattern is replaced with a correction pattern according to the state of the dot pattern. 2. When the dot to be corrected is white, the shape of the correction pattern to be replaced is completely white or at least 1
2. The method according to item 1, wherein the corners are made of black, and further, when the dot to be corrected is black, the shape of the correction pattern to be replaced is made of all black or at least one corner is made of white. Dot pattern correction method.