JPS5922764A - Method for correcting enlarged character - Google Patents

Abstract

PURPOSE:To avoid excessive correction at parts other than an oblique line part, by a method wherein a dot pattern prior to enlargement is referred to a predetermined pattern and correction is performed from the start point of an oblique line with respect to the simply enlarged dot pattern corresponding to the inclination thereof to smoothly enlarge the oblique line part. CONSTITUTION:Original pattern memory 15 stores a dot pattern 14 prior to enlargement and reads the same in such a manner that said dot pattern is scanned toward a traverse direction from the left end upper part of the pattern as dot infomation 21 at every 6 dots on the basis of address information 19 supplied from an address decoder 12. A pattern coincidence circuit 22 performes correcting operation with respect to the pattern written in enlarged pattern memory when the dot information 21 is supplied. When the dot information 21 is coincided with the dot pattern, a pattern coincidence signals 27 is sent to a correction treatment circuit 28 and the adress decoder 12 and a correcting position is specified by the adress information to output a correcting signal 29 every time the pattern coincidence signal 27 is supplied.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an enlarged character correction method used in an apparatus that prints or displays enlarged characters by enlarging a driver pattern and correcting it as appropriate.

Create enlarged characters using a character generator that breaks down each character into dots and stores them. In this case, the simplest method is to print black dots (printing dots) according to the magnification.
This is a method of reading bright white dots (drills 1 through 1 which do not print) at an integral multiple of the -ratio.

However, when this y-no method is used, the pattern lacks smoothness, especially in diagonal areas, and these areas are awkwardly expressed, resulting in poor character quality.

In order to prevent such poor character quality, an enlarged character correction method as shown in FIG. 1 has been proposed. In this method, for the dot pattern in the diagonally shaded area, which becomes the pattern shown in Figure 11 when simply enlarged vertically and horizontally twice, black dots 1-d are evenly spaced in each row as shown in Figure 11. (B)
Either one by one, or replace the dots 1 to 1 at the corners of each stage with white dots d (W) as shown in Figure C.

However, this J, Una enlarged character correction method e is (1) 45
Diagonal lines with a slope of about 100 degrees are well compensated for, but diagonal lines with a steep slope are still awkwardly expressed. It is not possible to enlarge the dot pattern as shown in the opening of the figure J while maintaining its outline. However, in the conventional enlarged character correction method, this large portion is uniformly corrected, so that the pattern after correction is shown in FIG. Therefore, inconveniences occur particularly when enlarging the Dora 1 pattern of Mincho fonts. In other words, as shown in Figure 3, over-correction (addition of black dots) as shown by dotted line 2 in horizontal scale part 1
This causes the scales to lose their shape.

In view of these points, the present invention provides an enlarged character correction method that smoothly enlarges the shaded area while preventing excessive supplementation in areas other than the shaded area.

The present invention achieves the above-mentioned object by comparing the dot pattern before enlargement with a predetermined pattern and correcting the simply enlarged dot pattern from the starting point of the diagonal line according to its inclination.

The present invention will be described in detail with reference to Examples below.

FIG. 4 shows the main part of a device that performs double enlargement processing in both the vertical and horizontal directions for character patterns. A pattern memory 11 storing character patterns reads out a dot pattern 14 for a predetermined character designated by address information 13 supplied from an address decoder 12 and supplies it to an original pattern memory 15 and an enlargement processing section 16. The enlargement processing unit 16 simply enlarges the supplied driver 1 pattern by twice in both the vertical and horizontal directions, and stores this as a simple enlarged pattern 17 in the enlarged pattern memory 1.
8 to be memorized.

On the other hand, the original pattern memory 15 stores the dot pattern 14 before enlargement, and based on the address information 19 supplied from the address decoder 12 after this, the original pattern memory 15 stores the dot pattern 14 as 6 dots each from dot l to information 21 at the upper left end of the pattern. C readout is started by scanning in the lateral force direction from . In the case of the first scan, information 2l-IH is read out to the drive 1 through a window shaped as shown in FIG. The dot marked with an asterisk here is the center of the readout.
It is ~. The dot information 21-1 is supplied to the pattern-number circuit 22.

When the information 21-11-1 is supplied to the driver 1, the pattern number circuit 22 performs a horizontal correction operation in the first quadrant of the pattern written in the enlarged pattern memory 18. Here, the first quadrant correction is defined as correction performed on the upper surface of the pattern component 24 connecting the upper left and lower right as shown in FIG. Correction for the lower surface of the pattern component 24 is defined as third quadrant correction.

Furthermore, as long as there is a pattern component 25 connecting the upper right and lower left, the correction performed on the surface above it is defined as the second quadrant correction, and the correction performed on the -do surface is defined as the fourth quadrant correction. The present invention performs two types of corrections in the horizontal direction and vertical direction for each of these quadrants.

The horizontal direction correction of the first quadrant starts with the detection operation of the pattern component corresponding to the first quadrant. That is, the dot information 21-IH is supplied to the pattern number circuit 22 while sequentially changing the position of the window until it matches the dot pattern 26 shown in FIG. 7A. dot pattern 26
The shaded area is black dot 1-d (B), and the rest is white dot I.
-d(W). two black dots d (13)
is arranged with almost the same slope as the pattern component 24, which is the basic shape for detecting the pattern component in the first quadrant.

When the dot information 21-111 matches the dot pattern 26, the pattern number circuit 22 outputs a pattern matching signal 27. The pattern matching signal 27 is supplied to both the address decoder 12 and the correction processing circuit 28. The address decoder 27 thereby stops sending address information for reading out the dot information 21-1H at the next dot position. Then, at the next sending timing, the 8th
The address for reading out the dot at the location 1'B1 shown in the figure is output as address information 19.

On the other hand, the correction processing circuit 28 receives the address information 19 and specifies the correction position. Soshi-℃ pattern match @27
Each time the signal is supplied, a correction signal 29 for correcting the enlarged pattern is output. First, in the first step of correction, when the pattern matching signal 27 is output by the detection of the dot pattern 26, the dots in the part shown by ■ of the enlarged pattern 31 (opening in Fig. 7) corresponding to the dot pattern 26 become white dots. will be changed from to a black dot. This makes the correction second
Move to step.

In the second correction step, the drums 1 to (7th
The pattern number circuit 22 detects whether or not this is a black dot 1- for Nb). If the dot 131 is a black dot, a pattern matching signal 27 is output.

At this time, the correction processing circuit 28 changes the dots at the J portion indicated by ■ in the enlarged pattern 33 (FIG. 7-2) for which the first step correction has been completed from white dots to black dots:. If the dot in B1 is a white dot, the pattern matching signal 27
is not output. In this case, the complementation at this part is completed, and the information 21-11-1 from the driver 1 to the information 21-11-1 from the original pattern memory 15 to the pattern area that has not been scanned yet.
reading is resumed. This result pattern - number circuit 2
If coincidence with the driver 1-pattern 26 is detected again at step 2, the correction operation currently being described will be started for that region. On the other hand, if the pattern matching signal 27 is output even in the second step of correction, the correction proceeds to the third step.

In the third step of correction, A
2 and the drive 1- (FIG. 7 E) at the location B2 are read out. If the rear A2 of these drivers I~ is a white dot and 82 is a black dot, a pattern matching signal 27 is output from the pattern number circuit 22. In this case, the correction processing circuit uses the enlarged pattern 3 that has been corrected in the second step.
5 (to Fig. 7), change the dot in the area shown by ■ from white pin 1 to black dot and cover it. Similarly, in the second step (L is a positive integer of 2 or more), A(L
-1) and B (L-1) are read out, and if Δ(L-1) is a white dot and 13 (L-1) is a black dot, then the dot in the part ■ is read out. The white pin l~ is changed to a black dot. As described above, this supplementary iF ends at the step where these conditions are no longer satisfied.

If we look at the various pattern components that apply the horizontal correction in the first quadrant described above to the first quadrant, we will see the ones shown in FIG. 9. Simple enlarged pattern of black dots 3
It can be seen that the black dots 1-37 due to the correction are added to 6, and the relatively gentle slope of the patterns shown at A and the mouth in the figure are successfully corrected as a result. The pattern 1 shown in FIG. 1C, which has a relatively steep slope, is corrected to an even better pattern by vertical correction of the @1 quadrant, which will be explained next.

When the correction in the horizontal direction in the first quadrant is completed, the correction operation in the vertical direction in the same quadrant is started. At this time, address decoder 1
Based on the address information supplied from 2, dot information 2l-IV of 6 dots at a time starts to be read out by sequentially and repeatedly scanning in the vertical direction from the lower left end of the pattern in the original pattern memory 15. The dot marked with an asterisk * is the dot at the center of reading.

When the pattern number circuit 22 receives the dot information 2l-IV, it performs pattern matching with the dot pattern 41 shown in FIG. 11A. As a result, the pattern matching signal 27 is outputted, and the dots 1 to 1 not marked with squares in the enlarged pattern 42 (opening in FIG. 11) corresponding to the dot pattern 41 are changed to black dots. However, the driver 1 to this part may have already been corrected in the previous correction operation.

When the operation of this first step is completed, the operation shifts to the second step. Along with this, it is shown in the 11th ROM 'rJ'
The dot corresponding to the CI position is read out from the original pattern memory 15, and if it is a black dot, the dot indicated by ■ in the corrected enlarged pattern /l3 (81'!11 Figure 2) is a black dot. It is changed from 1 to 1.

In the subsequent third step, the drums 1 through C2 and B2 shown in FIG. 11E are read out. If C2 is a black dot and B2 is to white pin 1, the driver 1 at the part indicated by ■ in the enlarged pattern 44 after correction (see Fig. 11).
is changed from white pin 1- to black dot 1. Similarly, in the Cth step, C(L-1), L) (L-
1> is read out, and if C (i, -1) is a black dot and D (L-1) is a white dot 1~, then the gong 1~ in the part ■ is a white dot 1. ~ will be changed to a black dot.

This correction ends at the step where these conditions are no longer satisfied, and similar corrections are performed at other locations of the dot pattern stored in the original pattern memory 15.

When the correction in the vertical direction of the first quadrant described above is completed, the comparative pattern of the slope is corrected satisfactorily. As a result, for example, the pattern shown in FIG.
, the sea urchin is even better corrected.

When the correction of the first quadrant is completed, the correction of the second quadrant is next performed. In the horizontal correction in the second quadrant, the drive 1 to information 2l-2H are read out in a window not shown in FIG. Also Ii
The correction in the h direction is shown in Figure 13. Dot information 2 in l window
"1-2V is read out. Horizontal correction is performed at each step as shown in FIG. 14, and vertical correction is performed at each step 710 as shown in FIG. 15. Since it is the same as the correction method of each step in the first quadrant shown in Fig. 7 and Fig. 11, the explanation will be omitted.
In the horizontal correction of the quadrant, dots are read out from left to right. There is no need to worry about the scales of the following Mincho font being incorrectly corrected.

When the correction of the second quadrant is completed, the correction of the third quadrant is performed. The correction in the third quadrant is the same as the correction in the first quadrant. Since the addition of the burnt dots 1 to 1 was performed in the correction of the first quadrant, the correction of the third quadrant involves the deletion of the black dots 1 to 1, that is, the addition of white dots.

This is to prevent the I line segment from becoming thicker due to the correction operation. Therefore, when white dots I~ are added in the first quadrant, black dots l~ are added in the third quadrant.

In the third quadrant lateral correction, the first step is
6 In the window shown in Figure 6, 5 dots 1 to f dots l to information 21-3
1-1 is read out. The pattern-number circuit 2.2 matches patterns 1 to 5 shown in FIG. 17A, and when they match, a pattern matching signal 27 is output. Based on this, the correction processing circuit 28 changes the black dot at the portion indicated by 1 of the enlarged pattern 52 (opening in FIG. 17) corresponding to the driver 1 pattern 51 to a white dot 1.

In the second step of correction, the pattern shown in FIG. 17C is 1:1ll! The dots at positions 5 and 1 are read out. ] If 徲1 is a black dot 1- and Fl is a white dot 1-, the black dot (- or white dot) at the position of ■ in the enlarged pattern 53 after correction (FIG. 2) is changed.Same as above. In the second step, G (L-1) and J: and F (L-1)
If the dot I- of the part is read out, and E (L-1) is a black dot and F (L-1) is a white dot. will be changed to This correction is completed at step ' when these conditions are no longer satisfied, and a similar correction is made at the square point of the pattern for the driver 1 stored in the 1ffi/\turn pattern 15.

Next, in the vertical supplementary IF in the third quadrant, in its first step, dot information 2l-3V is read out dot by dot (5) using one window shown in FIG. Pattern-number circuit 22
Then, a match is made with the dot pattern 54 shown in FIG. 19A. When the patterns match, the black dots in the corresponding enlarged pattern 55 (opening of FIG. 19) at the portion indicated by a black circle are changed to white dots. In the second correction subassembly, the G I J3 and J
The dot at location l is read out. G1 is a black dot
” If Jl is a white dot, the black dots 1~ at the position ■ of the corrected enlarged pattern 56 (FIG. 2) are changed to white dots 1~.Similarly, the second step C is ,G(
If L-1>tJ3 and J (L-1) are read out, GN, -1) is a black dot 1-1J (L-1) is a white dot 1~, then The dots 1 to 1 of the parts are changed from black dots to white dots. Correction is completed for the step where these conditions are no longer met, and the original pattern method L15 is
Similar corrections are made at other locations of the drum 1 to pattern stored in . .

After the correction of the third quadrant is completed, the fourth quadrant is finally supplemented. In the horizontal/j direction complementary iI of the fourth quadrant, the 20th
The dot information 21-4 If is read out in the window shown in the figure. Further, regarding the vertical correction C, information 21-4V is read out to the driver 1 through the acceptance window shown in FIG. The correction of the lateral force direction is the 22nd
In addition, the correction in the vertical direction is carried out in each step (not shown in Fig. 23).These correction methods are described in the first
Since the correction method for each step in the third quadrant shown in FIGS. 7 and 19 is the same, the explanation will be omitted.

In this way, corrections are made across the four quadrants,
Correction of the enlarged pattern stored in the enlarged pattern memory 18 is completed. Figures 24 to 26 show the progress of such correction for the character ``套'' in the Mincho font. In these figures, one square is one dora 1~ that makes up the pattern.
It represents.

The pattern shown in FIG. 24 is a pattern stored in the original pattern memory 15, and there is a pattern C' before enlargement.

The pattern shown in FIG. 25 is a simple enlargement pattern C' that was first stored in the enlargement pattern memory 18.

The pattern in FIG. 26 is an enlarged pattern after completion of correction. It can be seen that the shaded areas have been smoothed out, but the "black" portions characteristic of the -b Mincho typeface are not expressed well.

As explained above, according to the present invention, the quality of the dot pattern after enlargement is high, so there is no need to prepare a plurality of types of character patterns depending on the magnification. Furthermore, devices equipped with a microcomputer have the advantage that such corrections can be easily performed using the microcomputer.

[Brief explanation of drawings]

Figure 1 is an enlarged view of the main part of the 7j pattern to explain the IJi pure enlargement of the character pattern and the conventional correction method for this enlarged pattern, and Figure 2 is the excessive correction by the conventional enlarged character correction method. FIG. 3 is an enlarged view of the main part of the pattern to explain excessive correction in the "Uro" part of the Mincho typeface, and FIGS. 4 to 26 are enlarged views of the main part of the pattern of the present invention. This is for explaining one embodiment.
Of these, Fig. 4 is a block diagram showing the main parts of the part that performs enlargement processing, Fig. 5 is a configuration diagram of the information from the driver 1 cut out to perform horizontal correction of the first quadrant, and Fig. 6 is An explanatory diagram showing each quadrant and the correction direction of the character pattern. Fig. 7 is a diagram showing the arrangement of various drivers 1 showing the correction in the horizontal IJ direction in the first quadrant. Fig. 8 is the name of each dot in this correction. FIG. 9 is an enlarged view of the main part of the pattern showing the correction results for the first quadrant. 10th IS! 11 is a configuration diagram of the information from the driver 1 cut out to perform vertical correction in the first quadrant, FIG. FIG. 13 is a configuration diagram of each of the information from the driver 1 cut out to correct the lateral force direction and longitudinal direction in the second quadrant,
Figures 14 and 15 are various dot layout diagrams showing the horizontal and vertical corrections in this quadrant, respectively, and Figure 16 is the dot information cut out to perform the horizontal correction in the third quadrant. Fig. 17 is a diagram showing the arrangement of each bucket dot showing the state of this horizontal correction, and Fig. 18 shows the driver 1 cut out to perform the vertical correction of this quadrant.
~ Information configuration diagram, Figure 19 is a diagram of various dot layouts showing the state of this vertical correction, and Figures 20 and 21 are cut out to perform horizontal and vertical correction in the fourth quadrant. Dot information configuration diagram, Figure 22 J3 and 23
The figure shows various dot layouts showing the horizontal and vertical IJ corrections in this quadrant, Figure 24 is a diagram of the pattern configuration for the character ``套'' before enlargement, and Figure 25 shows the same character in a simplified form. FIG. 26, which is an enlarged pattern configuration diagram, is a pattern configuration diagram after method C correction of this embodiment. 11...Pattern memo 15...Original pattern meshiri 18...Enlarged pattern memory 21...Dragon 1-information 22... Pattern matching circuit 28...Correction processing circuit Application Patent attorney Ume Yamauchi, representative of Fuji L-Rocks Co., Ltd. Figure 5 Horizontal car 1 (e) Figure 6 5 Figure 11 Figure 12 1-2H 7' 13th prisoner (a) (c) 1 (e) 3 B2 14th kuni (b) (d) (e) 151st (e), 3C3 °2C2 No. 37↑, f. *20th Flash 22nd F2 H] Figure 21, Figure 2l-4V (B)

Claims (1)

[Claims] Each of the dots that constitute the dot pattern representing a character was converted into a plurality of dots 1, and the pattern was simply enlarged, and the diagonal areas of the enlarged dot 1 pattern were appropriately corrected and enlarged. In the device for creating a character dot pattern, prepare a pattern that represents the dot arrangement near the contact point between the diagonal line part of the pattern and the straight line part in the horizontal or vertical direction, and use this pattern to create the dot pattern before enlargement. This enlarged character correction method is characterized in that each part of a dot pattern is compared, and when a match is found, the pattern is corrected from the start point of the diagonally lined part to the dot 1 after C enlargement according to the slope of the diagonal line.