JPH02134263A - Output apparatus - Google Patents

Abstract

PURPOSE:To obtain a well-balanced character which does not contain an extremely fine line having an one-dot width by correcting the one-dot width of a line to a line width of two or more dots when the line having the one-dot width is present in the development result of an outline font prior to output. CONSTITUTION:A means for correcting the one-dot width of the line in a character wherein an outline font is developed to a two-dot width is provided. By this method, even when the outline font is reduced to a certain number of dots or less, a well-balanced character containing no line having the one-dot width can be obtained. For example, in a character 'T' wherein the line width of a lateral line (L1) becomes the one-dot width by the contraction processing of the outline font, when contour processing with correction is performed, dots DN are newly added as On-dots (black dots) and the width of the lateral line L1 becomes the two-dot width and a well-balanced character shape is obtained.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Separation) The present invention relates to a device that develops and outputs a dot pattern of an outline font according to modification information, and particularly relates to a device that develops and outputs a dot pattern of an outline font according to modification information. The present invention relates to an outline font output device that can generate and output a well-balanced character pattern by correcting extremely thin line parts.

(Prior Art) Conventionally, in a document creation device that handles outline fonts, when an outline font is developed into a dot pattern according to modification information and outputted, the processing procedure shown in FIG. 30 is used. That is, read out the outline font (outline font data) for one character to be output (Step S1), calculate the modified coordinates using the outline font and character modification information (Step S2), and calculate the coordinates. Font development processing was performed according to the value (steps S3 to S5).

(Problem to be Solved by the Invention) However, in the above-mentioned conventional outline font development processing means, when an outline font is reduced to less than the number of dots that it consists of, the line width of a part of the outline font becomes inconspicuous and ultra-fine. An inconvenient problem arises in that the characters become lines and the characters become very unbalanced.

The present invention was developed in view of the above-mentioned circumstances, and is capable of outputting a balanced and easy-to-read outline font by correcting the 1-dot width lines that occur when an outline font is reduced to a certain number of dots or less. The purpose is to provide an output device.

[Structure of the Invention j (Means and Effects for Solving the Problems) The present invention has a structure in which means is provided for correcting a 1-dot width line in a character developed by an outline font to a 2-dot width. As a result, even if the outline font is reduced to a certain number of dots or less, it is possible to obtain well-balanced characters that do not contain lines of one dot width.

Here, the feature points in the embodiments of the present invention will be listed with related figure numbers.

1) It has a discrimination means that switches the outline drawing means according to conditions such as single character modification information and font type, and has an outline font development means that activates the outline drawing means with correction when it is determined that correction is necessary (see FIG. 1).

2) It has an outline font development means that adds set dots (on dots) so that lines with a width of one dot do not occur as a result of developing the outline font (see FIG. 6).

3), 1 that occurred as a result of expanding the outline font
It has an outline font expansion correction means for correcting a dot-width line to a width of two or more dots (see FIG. 29).

4) It has an outline font contour drawing means that adds set dots to the inner side of the contour when drawing contour line segments whose slopes are within a specific range (Figs. 6, 8, and 8). (See Figures 12 to 14).

5) An outline font expansion correction means is provided for adding set dots to the inner side of the contour of contour line segments whose inclinations are within a specific range (see FIGS. 29, 8, and 12 to 14).

6) In the configuration of item 4) above, when drawing a contour line segment whose slope is not within a specific range and has one or more reset dots toward the inside of the contour, Furthermore, it has an outline font contour drawing means that adds and draws set dots (Fig. 6, Fig. 15, Fig. 1).
(See Figures 8 to 21).

7) In the configuration of item 5) above, an outline in which set dots are further added to the outer side of the contour constituent line segment whose slope is not within a specific range and has one or more reset dots in the inner direction of the contour. Has font expansion correction means (
Figures 29 and 15.

(See Figures 18 to 21).

8) In the configuration of item 4) above, when drawing a contour constituent line segment whose slope is not within a specific range and has one or more reset dots inward of the contour other than the starting point, It has an outline font contour drawing means that adds set dots in the direction (Fig. 6, 16).
22 to M24).

9) In the configuration described in item 5) above, set dots are added in the outer direction of the contour constituent line segment whose slope is not within a specific range and has one or more reset dots in the inner direction of the contour other than the starting point. (See Figures 29, 16, and 22 to 24)
.

10), 6) and 8) above, the range in which set dots are added to the outside of the contour and drawn is
It has an outline font contour drawing means that limits the dots on the contour line segment that are on the same row or column as the dot on the contour line segment that has the reset dot toward the inside of the contour (FIG. 6).

(See FIGS. 17 and 26 to 29).

11) In the configurations of 7) and 9) above, the range in which set dots are added to the outside of the contour is set to the same line as the dot on the contour line segment where the reset dot is placed in the inside direction of the contour. Or, it has an outline font development correction means that limits the dots on the outline constituent line segments on the column (
Figures 29 and 17.

(See Figures 26 to 29).

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention.

In FIG. 1, ``■'' is a CPU that controls the entire device. 2 is a character code register that stores character codes to be output under the control of the CPUI. 3 is CPU
Under the control of I, the font type of the outline font to be output (Mincho typeface.

This is a font type register that stores fonts (such as Gothic). 4
is an outline font generating means that outputs an outline font according to the font type stored in the font type register 3 and the character code stored in the character code register 2 under the control of the CPUI. A font buffer 5 stores an outline font for one character generated by the outline font generating means 4. 6 is C
This is a character modification information register that stores character modification information of an outline font to be output under the control of the PUI.

Reference numeral 7 denotes a character modification coordinate calculation means which develops the outline font stored in the font buffer 5 into dot coordinates according to the character modification information stored in the character modification information register 6 under the control of the CPUI. 8 is the coordinate data for one character obtained by the character modification coordinate calculation means 7 (Figs. 4 and 5).
This is a coordinate buffer that stores the coordinates (see figure). 9 is CPUI
This is a discriminant point drawing means for drawing a discriminant point for filling out the contents of a character from the coordinate data contents stored in the coordinate buffer 8 under the control of the coordinate buffer 8. 1O is a coloring means for coloring the inside of a character under the control of the CPUI. Reference numeral 11 denotes correction necessary/unnecessary determining means for determining whether dot correction is necessary based on the font type stored in the font type register 3 and the character modification information stored in the character modification information register 6. Reference numeral 12 denotes a contour drawing means for drawing a contour without performing dot correction when the correction necessary/unnecessary determining means 11 determines that no correction is necessary. Reference numeral 13 denotes a contour drawing means with correction for drawing a dot-corrected bone contour. 14 is a contour drawing means 12. Alternatively, it is a dot pattern development buffer that stores a dot pattern for one character under the drawing control of the contour drawing means 13 with correction.

A page memory 15 stores dot patterns for one page. 16 is an output control device that controls the output of the contents of the page memory.

FIG. 2 is a diagram for explaining an outline font generated by the outline font generating means 4,
Here, the outline of the character is traced in a clockwise direction and approximated by a line segment. Therefore, the left side of the − line segment in the direction of movement is always inside the character.

FIG. 3 is a diagram for explaining the structure of the dot pattern expansion buffer 14. Here, the upper left is the origin, the horizontal direction is X, the vertical direction is y, and each dot is in the form of P (x, y). expressed.

4 and 5 are for explaining the structure of the coordinate buffer 8, and FIG. 4 shows an example of a pattern resulting from one of the outline fonts being developed into dot coordinates by the character modification coordinate calculation means 7. FIG. 5 shows how the pattern shown in FIG. 4 is set in the coordinate buffer 8.

6 to 9 each show the outline font development output processing procedure in the above embodiment, FIG. 6 is a flowchart for explaining the overall processing operation, and FIG. 7 is a flowchart for explaining the overall processing operation. FIG. 8 is a flowchart for explaining the corrected contour drawing processing operation in step S7 of FIG. 7, FIG. 9 is a flowchart for explaining the corrected contour drawing processing operation in step S19 of FIG. 8 is a flowchart for explaining the line segment slope classification processing operation in step S31 of FIG. 8. FIG.

FIG. 10 is a diagram showing the correspondence between the slope of the line segment and its classification data in step 31 of calculating and classifying the slope of the line segment in FIG. indicates the drawing direction.

FIG. 11 is a flowchart for explaining the next dot calculation processing operation in step 38 of FIG. 8 above.

FIGS. 12 to 14 are diagrams for explaining the dot development operation in the above embodiment, respectively.

Here, the operation in one embodiment of the present invention is illustrated in FIGS. 6 to 9.
The explanation will be made according to the flowchart shown in FIG.

First, during pattern development and output processing of an outline font, under the control of the CPU 11, the character code of the character to be output is stored in the character food register 2, the font type information is stored in the font type register 3, Character modification information is stored in character modification information register 6. After this data set processing, the processing shown in FIG. 6 is started.

First, the overall operation will be explained according to the flow shown in FIG.

6, in step S1, under the control of the CPUI, the outline font generating means 4 generates one character according to the character code stored in the character code register 2 and the font type stored in the font type register 3. An outline font for the vehicle position is generated and output, and the outline font is stored in a font buffer 5.

In step S2, the character modification coordinate calculation means 7 converts the outline font stored in the font buffer 5 into coordinate data according to the character modification information stored in the character modification information register 6, and the converted coordinate data is transferred to the coordinate buffer 8. to be memorized.

In step S3, according to the coordinate data stored in the coordinate buffer 8, the filling discriminating point drawing means 9 draws discriminating points for filling into the dot pattern development buffer 14.

In step S4, the inside of the character is filled in according to the discrimination points for filling drawn in the dot pattern development buffer 14 in step S3.

In step S5, based on the character modification information stored in the character modification information register 6 and the font type stored in the font type register 3, the correction necessary/unnecessary determining means 11 determines whether or not correction is necessary. (For example, Mincho typeface requires correction when reduced from 50 dots to 30 dots.
Gothic fonts are unnecessary because they are originally lined or thick, etc.)
.

In step S6, when the correction necessary/unnecessary determining means 11 determines that correction is not necessary, general outline drawing without correction is performed.

In step S7, when the correction necessary/unnecessary determining means 11 determines that correction is necessary, contour drawing with correction is performed. FIG. 7 shows details of the processing procedure for contour drawing accompanied by this correction.

FIG. 7 is a flowchart illustrating in detail the process of step S7 (the step of drawing the outline while applying correction) in FIG.

Here, data is read from the coordinate buffer 8, and the corrected contour drawing means 13 sets the starting points of each line segment forming the contour to xs and ys (step 514).
After setting the end points to xa and ye (step 5113), contour drawing processing with correction is executed (step 51).
9. (See Figure 8). In addition, in the figure, C, i, xs, ys, j
, xe, ye, and L are working registers, respectively.

Figure 8 shows step 519 (contour drawing with correction) in Figure 7.
3 is a flowchart for explaining the process in detail.

In FIG. 8, in step 31, the slope of the line segment, Δx
-l xe -xs l, Δy-tye-ysΔ
min −1n (ΔX, Δy).

Calculate Δ1Ilax - wax (Δx, Δy).

however, m1n (a, b) = a 1f (a<b).

Mi b 1f (a ≧ b ) IIFax (a, b) = a 1r (a
≧b).

Mi b If (a<b) shall be.

A detailed processing flow of this step 31 (tilt classification step) is shown in FIG. Further, the correspondence between the slope of the line segment at this time and the slope handled by the device is shown in Fig. 1θ. Here, the direction of the arrow indicates the drawing direction, and the slope of the line segment is 45@
It is classified into 8 units, and its slope is expressed as a value from 0 to 7.

After the slope classification process in step S31 in FIG. 8, parameters for drawing line segments are calculated in the next step S32. Here, the remainder specifies the contents of the register that stores the decimal part for line segment drawing, and sets the initial value to Δmax /
The reason why it is set to 2 is for rounding.

If steps S34 to S37 are excluded, the flowchart becomes a general line segment drawing process.

In steps S34 to S37, the slope is 0, 1, 57, .
Add one on dot (black) to the left side of the line segment in the direction of movement (-dot set).

That is, here, when drawing contour constituent line segments whose inclinations are within a specific range, without recognizing the presence or absence of a line width of 1 dot, set dots are added to the inner side of the contour and drawn. This prevents lines with a width of one dot from occurring.

Step 338 is a processing step for calculating the coordinates (x, y) of the next dot to be drawn and a new remainder from the remainders Δff1aX and Δmin, and the detailed processing flow is shown in FIG.

An example of actual pattern correction in the above-mentioned dot correction processing (contour processing with correction) will be explained with reference to FIGS. 12 to 14.

FIG. 12 shows a character rTJ whose horizontal line (Ll) has a line width of one dot due to the outline font being reduced. When the area surrounded by a circle in Fig. 12 is enlarged into dots, it becomes as shown in Fig. 13. When the contour processing with correction shown in FIG. 8 is applied to the pattern shown in FIG. 13, the dot DN is newly added as an on-dot (black dot), and the horizontal line L
The width of 1 becomes 2 dots, and the character shape is corrected to be well-balanced.

Next, with reference to FIGS. 15 to 28, a description will be given of a contour processing operation with correction according to another embodiment, which is different from the contour processing with correction in the embodiment according to the processing flow shown in FIG. 8 above.

FIGS. 15 to 17 are flowcharts for explaining the corrected contour processing operation, which is different from that shown in FIG. 8 above.

FIG. 15 is a flowchart in which a new process with a line segment slope of 2.3.4.6 is added to the flowchart of FIG. 8 above.

The newly added process is to change the slope of the line segment to 2°3.4
．． In case 6, look to the left in the direction of travel (
Steps 5l13, 8118), if even one dot is not set (a pattern in which there is only one dot being traced), the flag register F is set.
Set "1" to "1" (step 5117), and also set the dot on the right side in the direction of movement from the beginning of the line segment (the right dot of the 1-dot width line being traced) (steps 5112 to 5115). .

FIG. 16 is a flowchart showing a processing operation in which new processing is added to the processing shown in FIG. 15 above.

Here, the newly added process is that the slope of the line segment is 2.3,
4. In the process of looking at the left side in case 6, the first 1 dot (F
--1 state) is a process of not looking to the left (steps 5211 and 321B).

FIG. 17 is a flowchart showing a processing operation in which new processing is added to the processing shown in FIG. 16 above.

The newly added process is that when the slope of the line segment is 2°3, the
Store the coordinates in register S (step 5315
), when adding a dot to the right side, look at the X coordinate of the register S and add a dot (dot set) to the right side only at x-3 (step 5319).

If the slope of the line segment is 4.6, dots are added to the right side (dot set) only to those dots with the same y coordinate as the y coordinate when a dot that is not set on the left side is found (step 5330).

Examples of actual patterns in each of the above dot correction processes (contour processing with correction) will be explained with reference to FIGS. 18 to 28.

First, the processing operation shown in the flowchart of FIG. 15 will be explained.

FIG. 18 shows the character "earth" whose horizontal line (L2) has a line width of one dot due to the outline font being reduced.

When the area surrounded by a circle in FIG. 18 is enlarged into dots, it becomes as shown in FIG. 19.

If the contour processing with correction shown in FIG. 8 according to the above embodiment is applied to the pattern shown in FIG. 19, the result will be as shown in FIG. 20. In other words, the center portion of the horizontal line (L2) is recessed. Therefore, when the contour processing with correction shown in FIG. 15 is applied to the pattern shown in FIG. 19, the pattern shown in FIG. 21 is obtained. Here, DN2 is the dot newly added in the process shown in FIG. 15 above.

Next, the processing operation shown in the flowchart of FIG. 16 will be explained.

In FIG. 22, the tip (E) of the part that bounced to the left is one dot wide.

When the area surrounded by a circle in FIG. 22 is enlarged into dots, it becomes as shown in FIG. 23.

When the contour processing with correction shown in FIG. 15 is applied to the pattern shown in FIG. 23, as shown in FIG. 24, dust appears to be attached first to (E).

Therefore, when the contour processing with correction shown in FIG. 16 is applied to the pattern shown in FIG. 23, no dots are added and no dust is added.

Next, the processing operation shown in the flowchart of FIG. 17 will be explained.

FIG. 25 shows a horizontal line with a step in the middle, and the line width is one dot at the step.

When the area surrounded by a circle in Fig. 25 is enlarged into dots, it becomes as shown in Fig. 26.

When the contour processing with correction shown in FIG. 16 is applied to the pattern shown in FIG. 26, as shown in FIG. 27, one dot protrudes downward and looks like dust.

Therefore, when the contour processing with correction shown in FIG. 17 is applied to the pattern shown in FIG. 26, the pattern shown in FIG. 28 is obtained.

Here, DN is a newly added dot.

This eliminates ``protrusion'' of one dot.

FIG. 29 is a flowchart showing the processing flow according to another embodiment when one character of the outline font according to the present invention is developed into the dot pattern development buffer 14. is determined.

In FIG. 29, steps S401-S404
is a processing step similar to step 5l-S4 in FIG. Step 5405 is a processing step for drawing the outline within the film. Step 8406 is a processing step for determining whether correction is necessary or unnecessary, similar to step S5 in FIG.

Step 5407 is a processing step for performing correction when it is determined in step S40B that correction is necessary.

As shown in the flowchart of FIG.
A process of correcting a line width of one dot to a line width of two dots may also be performed.

[Effects of the Invention] As described in detail above, according to the present invention, in a device that develops and outputs an outline font into a dot pattern according to modification information, the result of developing an outline font is
When a line with a width of 1 dot exists, this configuration has a means for correcting the width of the same line to a line width of 2 dots or more and outputting it, so even if the outline font is reduced to a certain number of dots or less, , it is possible to obtain well-balanced characters that do not include ultra-fine lines with a width of one dot.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus in an embodiment of the present invention, FIG. 2 is a diagram for explaining an outline font generated by the outline font generation means of the above embodiment, and FIG. FIG. 4 is a diagram for explaining the structure of the dot pattern development buffer in the above embodiment. FIG. 4 is a diagram showing an example of pattern development of dot coordinates obtained by the character decoration coordinate calculation means in the above embodiment. FIG. is a diagram showing an example of data set on the coordinate buffer of the above embodiment for the pattern of FIG. 4, FIG. 6 is a flowchart for explaining the overall processing operation in the above embodiment,
FIG. 7 is a flowchart for explaining the contour drawing processing operation with correction in step S7 of FIG. 6 above, and FIG. 8 is a flowchart for explaining the contour drawing processing operation with correction in step S19 of FIG. 7 above. FIG. 9 is a flowchart for explaining the slope classification processing operation of the line segment in step 531 of FIG. 8, and FIG.
A diagram showing the relationship between the slope of the line segment and the classification data correspondence on the device side in step S31 of calculating and classifying the slope of the line segment in the figure, FIG. 11 is the next step in step 33g of FIG. Flowcharts for explaining the dot calculation processing operation, FIGS. 12 to 14 are diagrams for explaining the dot expansion operation in the above-mentioned embodiment, and FIGS. 15 to 17 are for explaining the dot calculation processing operation, respectively. FIG. 15 is a flowchart showing the processing flow according to the embodiment shown in FIG.
, 6) A flowchart showing a contour processing flow with correction according to another embodiment in which processing is added. FIG. 16 shows a contour with correction according to another embodiment in which a new dot addition control means is added to the processing shown in FIG. 15 above. FIG. 17 is a flowchart showing a contour processing flow with correction according to another embodiment in which a new dot addition control means is provided in addition to the processing shown in FIG. FIG. 15 is a diagram for explaining the dot development operation in another embodiment, and FIGS.
25 to 28 are diagrams for explaining the dot development operation in another embodiment shown in FIG. 17 above. , FIG. 29 is a flowchart showing the processing flow in another embodiment of the present invention in which the processing order is partially different from the embodiment shown in FIG. 6, and FIG. 30 shows the conventional outline font development procedure. FIG. l...CPU, 2...Character code register, 3...
- Font type register, 4... Outline font generation means, 5... Font buffer, 6... Character modification information register, 7... Character modification coordinate calculation means, 8.
...Coordinate buffer, 9...Discrimination point drawing means, 10...
・Coloring means, 11... Correction required/unnecessary determining means,
12... Contour drawing means, 13... Contour drawing means with correction, 14... Dot pattern development buffer, 15...
-Page memory, 16...output control device. Applicant's Representative Patent Attorney Takehiko Suzue

Claims (1)

[Claims] In a device that develops and outputs a dot pattern of an outline font according to modification information, when a line with a width of 1 dot exists in the result of developing an outline font, the width of the line is corrected to a line width of 2 dots or more and output. 1. An outline font output device comprising: means.