JPH0560875B2 - - Google Patents

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> Generally, in a word processor or the like, data such as characters, symbols, and designs inputted from an input device are edited and then printed or displayed as a dot pattern.

By the way, conventionally, in this type of device, characters and
In order to give emphasis to symbols, designs, etc., enlargement processing was performed and then output, but since this processing enlarges the pre-stored dot pattern as it is, it cannot be expressed as dots. The step-like distortion of the sloped part was also emphasized.

<Problems to be Solved by the Invention> The present invention aims to minimize the step-like distortion of the inclined portion due to the enlargement of the dot pattern.
It is an object of the present invention to provide a dot pattern correction apparatus which is characterized in that, after correcting the inclined portion before enlarging processing, enlarging processing is performed in accordance with the corrected pattern.

<Means for Solving the Problems> The present invention provides dot pattern correction in which a basic dot pattern stored in advance is read out, each dot constituting the basic dot pattern is corrected based on the state of adjacent surrounding dots, and then enlarged and output. The apparatus includes an identification means for identifying the white/black state of a dot to be corrected in an expanding dot pattern, and an analysis of the white/black state of a plurality of dots adjacent to the dot to be corrected based on the identification result of the identification means. and a pattern including a pattern in which a partial area of one corner or a plurality of corners is made up of white, and partial areas of two opposing corners are made up of white. A white correction pattern that includes a black correction pattern that is related to the form of the black correction pattern, and a pattern in which one or more corner partial areas are composed of black and all four corner partial areas are composed of black. a correction pattern, and when the state of the dot to be corrected is a black dot, replacing the dot with the black correction pattern according to the state of surrounding dots;
The dot pattern correction apparatus further comprises a correction replacement means for replacing the dot with the white correction pattern according to the state of surrounding dots when the dot to be corrected is in a white state.

<Function> In the dot pattern correction device of the present invention,
In order to correct the step-like distortion of the sloped part due to the expansion of the dot character pattern, a correction replacement means corrects it to a supplementary pattern that supplements the white dot part of the slope part, and corrects it to a deletion pattern that deletes the black dot part. Equipped with. In other words, it is a means that has a deletion pattern corresponding to a supplementary pattern, and if supplementation is performed, deletion is performed.

<Example> Hereinafter, the dot pattern correction device of the present invention will be described 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, and numeral 1 is a text memory that stores codes indicating characters, symbols, designs, etc. that are sequentially supplied from the input section. 2 is a character generator in which dot patterns corresponding to characters, symbols, designs, etc. are stored in advance; a text memory 1;
A dot pattern corresponding to the code supplied from is output. Reference numeral 3 designates a pattern buffer that 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 an internal operation block of the dot pattern correction circuit 4 shown in FIG. 2, and the specific operation will be explained with reference to FIGS. 4, 5, and 6.

The pattern buffer 3 temporarily stores, for example, one line of dot patterns sequentially supplied from the character generator 2, and in the normal case (no enlargement processing is performed), the pattern buffer 3 outputs the dot patterns as they are to an external output device such as a printer. When performing enlarged printing or enlarged display, the dot pattern correction circuit 4 operates and first takes in information for 9 dots shown in FIG. 4 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 discriminator 41, and the dot of interest is discriminated by a dot of interest by a dot of white/black discriminator 42.
Then, the reference dot is a reference dot analysis means [1] 43
and 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 [1] 43, which is instructed to operate when the dot of interest is white, analyzes the reference dots adjacent to the left, upper, lower, and right of the dot of interest X as shown in FIG.・In addition to 2, 3, and 4, if the reference dots adjacent to the upper left, lower left, upper right, and lower right are defined as A, B, C, and D, each of the supplied reference dots is shown in Figure 5 a. It analyzes which of the following conditions apply. Figure 5a
In the condition table shown in the table, the ● mark indicates that the relevant reference dot is a black dot, the ○ mark indicates that the relevant reference dot is white, and the ★ mark indicates that at least one of the three reference dots concerned is a white dot. It is a white dot and 3
If the dots are both white, this indicates that the correction pattern should be completely white. First, reference dots 1, 2, 3, and 4 are analyzed, and then the next A and A within the matching conditions are analyzed.
Analyze reference dots B, C, and D. If the conditions are completely matched through this analysis process, information indicating the correction pattern corresponding to the conditions is stored in the correction white pattern memory 4.
Output to 5. If the reference dot does not meet any of the conditions shown in FIG. 5a, information "0" indicating complete white is supplied to the corrected white pattern memory 45. The correction pattern memory 45 stores each correction pattern as shown in FIG. is output to the enlargement processing circuit 5.

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. In addition to 1, 2, 3, and 4, if the reference dots adjacent to the upper left, lower left, upper right, and lower right are defined as A, B, C, and D, each of the supplied reference dots is shown in Fig. 6. This is to analyze which condition shown in a is applicable. Figure 6a
The ○ mark in the condition table shown in the figure indicates that the reference dot in question is a white dot, and the □ mark or no mark indicates that the reference dot in question may be either a black dot or a white dot.
Furthermore, the ▲ mark indicates that it is sufficient if at least one of the two reference dots is a black dot.First, reference dots 1, 2, 3, and 4 are analyzed, and the next A within the matching condition is analyzed. - Analyze reference dots B, 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 FIG. 6a, information "0" indicating all black is output to the corrected white pattern memory 46. The correction pattern memory 46 stores each correction pattern as shown in FIG. is output to the enlargement processing circuit 5.

When the correction of one dot of interest extracted from the pattern buffer 3 as described above is completed, the dots following this dot of interest and the 8 dots adjacent to this dot are referred to as the second dot of interest from the pattern buffer 3. It is extracted as a dot and corrected by the same processing as described above. By performing this series of processing on all dots held in the pattern buffer 3 and sequentially outputting the correction patterns to the enlargement processing circuit 5, dots with corrected sloped portions as shown in FIG. Pattern characters can be printed or displayed enlarged.

Next, the forms of the corrected white pattern shown in FIG. 5b and the corrected black pattern shown in FIG. 6b are shown in FIG. 7 and will be specifically described. FIG. 7a 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 the side connecting the points of 1/2 of the diameter A of the two mutually touching sides, that is, A/2,
This is an area surrounded by the A/2 diameter sides that touch each other, and in this embodiment, this area is set large in order to output corrected patterns of characters, symbols, designs, etc. 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, the one shown in FIG. 7b is a correction pattern when the dot of interest is black.
indicates the vertical and horizontal diameters of the correction pattern, and the hatched area indicates the black area. This black area is the side connecting A-n/2 points of two sides that touch each other from the A×A area,
This is the area from which the area surrounded by the A-n/2 diameter sides that touch each other is removed, and in this embodiment, this area is used to output corrected patterns of characters, symbols, designs, etc. with emphasis on black. It is set large.
In addition, if you want to output with emphasis on white as above,
It is also possible to set this area small.

<Effects of the Invention> As explained above, in the dot pattern correction device of the present invention, in order to correct the step-like distortion of the sloped portion due to the enlargement of the dot character pattern, the white dot portion of the sloped portion is corrected. A correction/replacement means is provided for correcting to a supplementary pattern to be supplemented and to a deletion pattern to delete a black dot part. In other words, it is a means that has a deletion pattern corresponding to the supplementary pattern, and if the supplementation is performed, the deletion is performed.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a comparison between a conventional enlarged dot pattern character and an enlarged dot pattern character produced by the dot pattern correction device of the present invention, FIG. 2 is a diagram showing operation blocks related to dot pattern correction, and FIG.
The figure shows the internal operation block of the dot pattern correction circuit, Fig. 4 shows the dot of interest and the reference dots adjacent to it, and Fig. 5 shows the correction condition table when the dot of interest is white. FIG. 6 is a diagram showing a correction condition table and corresponding correction patterns when the target dot is black, and FIG. 7 is a diagram showing correction patterns for white and black. 1: Text memory, 2: Character generator, 3: Pattern buffer, 4: Dot pattern correction circuit, 5: Enlargement processing circuit.

Claims (1)

[Scope of Claims] 1. A dot pattern correction device that reads a pre-stored basic dot pattern, corrects each dot constituting the basic dot pattern according to the state of adjacent surrounding dots, and outputs the enlarged dot pattern, comprising: an identification means for identifying the white/black state of a dot to be corrected; an analysis means for analyzing the white/black state of a plurality of dots adjacent to the dot to be corrected based on the identification result of the identification means; a black correction pattern including a pattern in which one corner or a plurality of corner partial regions are composed of white, and two opposing corner partial regions are composed of white, based on the analysis result of the means; and a white correction pattern including a pattern in which one or more corner partial areas are composed of black and all four corner partial areas are composed of black in relation to the form of the correction pattern, When the state of the target dot is a black dot, the dot is replaced with the black correction pattern according to the state of the surrounding dots, and when the state of the dot to be corrected is a white dot, the dot is replaced with the black correction pattern according to the state of the surrounding dots. A dot pattern correction device comprising: correction replacement means for replacing the white correction pattern with the white correction pattern.