JPH0546151A - Method for scaling character pattern and control file used for the same - Google Patents

Abstract

PURPOSE:To utilize a general character pattern file by performing variable power processing for character pattern images which are read out of a character pattern file in order according to control file information. CONSTITUTION:This method is provided with the character pattern file 1 containing character patterns and the control file 2 consisting of header parts such as identifiers and enlargement/reduction control records. A display and printing control processor 3 determines the positions of repetition and deletion of a raster and a column in the scaling file 2 according to the difference in dot size between character pattern of output size and patterns in the character pattern file and varies the power of a raster image successively read out from the character pattern file 1 according to control information obtained by above- mentioned processing. Further, the raster image after the processing is written in an image buffer memory 4 at a specific position, read out in order, and outputted on a display device 5 or printer 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the display / display of character patterns.
The present invention relates to a method for enlarging / reducing a character pattern in a device for controlling printing and a control file used therefor.

[0002]

2. Description of the Related Art Conventionally, as a method for scaling, that is, enlarging or reducing, a character pattern of a character expressed in a dot matrix format, for example, Japanese Patent Laid-Open No. 53-144 is known.
No. 211, there is a method of performing linear density conversion to an m / n ratio with the run-length code as it is, and as described in Japanese Patent Laid-Open No. 51-92125, line (raster) There has been a method in which pairs of rows and columns to be enlarged or reduced are defined in advance in (-) and columns, and the pairs are inserted / deleted according to an instruction. Further, the most effective method for enlarging / reducing the character pattern is considered to be an outline font method in which the character size can be arbitrarily set. However, in the process of expanding the outline font into an image, a complicated procedure is required, and it is generally slow when handling Kanji (Japanese), and in order to make it a little faster,
Expensive hardware was needed. Also, in principle,
In general, the quality of small characters is low, and a complicated correction method is required to compensate for this, so in reality, it is often used only for large characters. Generally, in printing devices that require high quality,
In order to compensate for the above-mentioned problems with outline fonts, it has been customary to incorporate a raster image font as a character pattern file for standard character sizes.

[0003]

However, since the character pattern file of Chinese characters itself has a huge amount of data, incorporating a combination of various typefaces and sizes causes an increase in cost. Cause. Therefore, a method has been established in which only one size is incorporated in a certain typeface, and character patterns of various sizes are generated from a character pattern of one size. Of the above methods,
The simplest and most common one is to perform scaling by repeating (enlarging) or deleting (reducing) raster and column images based on mechanical rules. There are many types of hardware that can be run on. However, the scaling based on mechanical rules is generally of low quality and has a low utility value. There is also a method in which a character pattern to be scaled is divided into rectangular blocks and the scale is scaled while performing image correction. However, this method is effective when the scaling ratio is fixed, but in order to accommodate various scaling ratios,
There is a problem that the processing is too complicated.

Further, a character pattern used in a large-scale computer is provided with an enlargement / reduction control data area around the character pattern, and one bit of this data area is one raster.
Alternatively, there is a method devised so as to correspond to a column and perform repetition (enlargement) or deletion (reduction) for scaling based on the value of this bit. This control data is a character pattern.
It is excellent in that point because it is created so as to have high-quality zooming when created. However, since the control data is included in the character pattern data, the handling becomes extremely complicated, and since the control information is bit information, it is effective when the scaling ratio is fixed. However, there is a problem that it cannot be applied as it is with high quality when it corresponds to various scaling factors. On the other hand, in the printing device,
In order to support conventional software, a so-called emulation mode that functions in the same way as various printing devices.
It is equipped with a large number of cards. If you increase the part of hardware that the emulation functions share,
Execution speed increases, but flexibility decreases, whereas if the portion of software is increased, the speed decreases but flexibility increases. Therefore, in order to obtain an emulator with a good performance-price ratio, it is necessary for hardware and software to effectively share the work. In such an emulator, in order to emulate various resolutions, more precise zooming is required. An object of the present invention is to solve such a conventional problem, to use a character pattern file of a general raster image font as it is, and to perform a character pattern capable of precise enlargement / reduction in dot units. It is to provide a method of enlarging / reducing the size.

[0005]

In order to achieve the above object, the method for enlarging / reducing a character pattern according to the present invention comprises:
(B) The display / print control processor first calculates the difference in dot size between the character pattern to be drawn and the character pattern stored in the character pattern file, and based on the calculated difference. The position of repetition or deletion of rasters and columns is determined from the enlargement / reduction control file, and based on the determined control file information, the scaling is performed for the character pattern image that is sequentially read from the character pattern file. The processing is executed, the scaled character pattern image is written into a predetermined position of the image buffer memory, and the character pattern is output from the image buffer memory to the display / printing device. Further, the character display / printing control device of the present invention controls (b) a character pattern file, an image buffer memory for temporarily storing an image read from the character pattern file, and display / printing. In a character pattern display / printing control device equipped with a processor, a header section including an identifier of the file itself and control data,
Corresponding to each character pattern stored in the character pattern file, the repeat column position sequence and repeat raster position sequence for enlargement control and the delete column position sequence and delete raster sequence for reduction control. It is characterized in that an enlarging / reducing control file having an enlarging / reducing control record set composed of a position sequence is provided. Further, the enlargement / reduction control file of the present invention comprises (c) a repetitive column position sequence and a repetitive raster-position sequence for enlargement control, and a delete column position sequence and a deleted raster-position sequence for reduction control. A file having an enlarging / reducing control record, in which each number sequence is a corresponding character pattern image.
By repeating the raster and column processing or deleting the image, the number of character pattern images of the number that corresponds to the number of elements of the sequence generated when the magnification is changed is the numerical value arranged so as to have the highest quality. It is characterized in that it is a sequence, and each element of the sequence is a numerical value indicating the position of the raster and the column to be repeated or deleted.

[0006]

In the present invention, a character pattern file in which character patterns are stored, and a control file including a header portion such as an identifier and an enlargement / reduction control record are provided.
The display / print control processor displays the character pattern of the output size.
Position of the raster or column from the enlargement / reduction control file based on the difference in dot size between the pattern and the pattern in the character pattern file,
Next, the raster image sequentially read from the character pattern file is subjected to scaling processing based on the control information obtained by the above processing, and then the raster image after processing is output. Of the image buffer memory, sequentially read from the image buffer memory, and output to the display device or the printing device. As a result, since the permuted control data is used, the character image can be finely expanded or reduced in units of one dot size. Further, the enlargement / reduction control file according to the present invention includes a header section including a file identifier and control data, and a pattern.
It stores a set of enlargement / reduction control records corresponding to each character in the file. These enlargement / reduction control records are the repeat column position sequence and the repeat raster position sequence for enlargement control. , And a delete column position sequence for reduction control and a delete raster position sequence. further,
These position sequences have the highest number of character images that correspond to the number of elements in the sequence generated when the character images are scaled by a simple algorithm of repeating or deleting rasters or columns. Is a sequence of numerical values arranged in each element, and each element represents a numerical value indicating the position of the raster or column to be repeated or deleted.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a character pattern showing an embodiment of the present invention.
FIG. 3 is a block configuration diagram of a display / printing apparatus having an enlarging / reducing function. In FIG. 1, 1 is a character pattern file, 2 is an enlargement / reduction control file, 3 is a display / print control processor, 4 is an image buffer memory, 5 is a display device, and 6 is a printing device. That is, only the enlargement / reduction control file 2 is newly provided, and the other devices are exactly the same as those of the normal character pattern display / printing device. Here, the character pattern file 1 is
It does not have to be special and is a file that stores normal character patterns. Display / print control processor 3
Reads the pattern of the corresponding character from the character pattern file 1 as necessary, writes it in the image buffer memory-4 so that it can be recognized as a character image, and outputs it to the display device 5 or the printing device 6. To do. The enlarging / reducing control file 2 is displayed by the display / print control processor 3 in a character pattern.
It is used for scaling processing by the processor 3 between the time when the character pattern of the file 1 is read and the time when it is written in the image buffer memory-4.

FIG. 2 is a block diagram of the data section showing an embodiment of the enlargement / reduction control file in FIG. In FIG. 2, 7 is a header part of the enlargement / reduction control file 2, 8
Is a data section in which enlargement / reduction control records are collected, 9 is a plurality of enlargement / reduction control records having different attributes, 10 is a repeating column position sequence, 11 is a repeating raster position sequence, and 12 is a delete column. Position sequence, 13 is a deleted raster position sequence, 1
4 to 16 are numerical values 1 to 3 and 17 to 19 are numerical values 1 to 3 and 20.
.About.22 are numerical values 1 to 3, and 23 to 25 are numerical values 1 to 3.
The file header section 7 stores data such as an identifier of the file itself and other control information for adapting to the system in which the file is incorporated. The format of the header section 7 may be arbitrary, and the data section, which will be described later, has a fixed length format, and the character image of the character pattern file 1 is used.
This header-part 7
Can be omitted. The data section 8 is a character pattern file 1
Enlargement / reduction control record corresponding to each character included in
It is a set of do 9. The enlargement / reduction control record 9 is classified into a sequence of numbers 10 to 13 having four types of attributes based on the contents thereof. These sequence data may be fixed length or variable length format. The numerical value of each element of the repeating column position sequence 10 corresponds to one column image of the character pattern. Similarly, the numerical value of each element of the deletion column position sequence 12 also corresponds to one column image of the character pattern. Further, several kinds of each element of the repeated raster position number sequence 11 correspond to one raster image of the character pattern. The same applies to the deleted raster position number sequence 13.

For example, the original font of 56 × 56 dots (10.08 points at 400 dpi) is set to 58
When expanding to x58 dots (10.44 points at the same resolution), the column image shown in the first element 14 and the second element 15 of the repeating column position sequence 10
Enlargement is performed by repeating the raster image and repeating the raster image shown in the first element 17 and the second element 18 of the repeating raster position sequence 11. Such a sequence is created so as not to deteriorate the quality of the character image, and a necessary number of elements are taken out from the sequence and the scaling process is performed, so that the maximum number of elements in the sequence becomes 1 Enlargement / reduction can be performed in dot units. FIG. 3 is a flow chart showing the algorithm of the enlargement / reduction processing of the display / print control processor. First, the processor calculates the difference in dot size between the character pattern to be drawn and the pattern in the character pattern file (step 101).
In the above example, the character pattern to be drawn is 58 × 5.
By subtracting 56 × 56 dots from 8 dots, 2 dots on the raster side and 2 dots on the column side are calculated. Next, based on the calculated difference, the position of raster or column repetition or deletion is determined from the scaling file (step 102). In the above example, because of the difference of 2 dots on the column side, the value number 1 and the number 2 of the repeating column position sequence 10
And for the difference of 2 dots on the raster side, the number 1 and the number 2 of the repeating raster position sequence 11 are determined. Next, the raster read from the character pattern file 1
The image is scaled based on the above control information (step 103). Then, the raster image subjected to the scaling processing is written in the image buffer memory 4 (step 104). In this way, when the scaling process for one character is completed, the process returns to step 103 to continue the scaling process for the raster image read from the character pattern file. When all the character patterns to be drawn are completed (step 105), the process is ended.

[0010]

As described above, according to the present invention,
With a simple algorithm of repeating or deleting columns and raster images, it is possible to precisely scale up or down a character image with a dot size using permuted control data. Further, by simply incorporating a new enlargement / reduction control file, it becomes possible to perform variable magnification processing of the character pattern without changing the conventional character pattern file. In addition, the emulation of various display and printing devices
It is possible to display and print with a more accurate character size in response to the operation.

[0011]

[Brief description of drawings]

FIG. 1 is a block diagram of a display / printing device showing an embodiment of the present invention.

FIG. 2 is an internal configuration diagram of an enlargement / reduction control file in FIG.

FIG. 3 is a flowchart showing an enlarging / reducing algorithm of a processor according to the present invention.

[Explanation of symbols]

1 Character pattern file 2 Enlargement / reduction control file 3 Display / printing control processor 4 Image buffer memory-5 Display device 6 Printing device 7 Header part 8 Data part 9 Enlargement / reduction control record 10 Repeated column position Sequence 11 Repeated raster position sequence 12 Deleted column position sequence 13 Deleted raster position sequence 14-16, 17-19, 20-22, 23-25 Numerical value

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location // H04N 1/393 8839-5C

Claims (3)

[Claims] 1. A method of controlling enlargement / reduction of a character pattern by a character pattern display / print control device, wherein a display / print control processor first draws a character pattern to be drawn.
And the character patterns stored in the file.
The dot size difference with the image size is calculated, the position of raster or column repetition or deletion is determined from the enlargement / reduction control file based on the calculated difference, and the character pattern is determined based on the determined control file information. Scales the character pattern images that are sequentially read from the image file, writes the scaled character pattern image to a predetermined position in the image buffer memory, and writes the image from the image buffer memory. A character pattern enlarging / reducing method characterized by outputting a character pattern to a display / printing device. 2. A character pattern display including a character pattern file, an image buffer memory for temporarily storing an image read from the character pattern file, and a processor for controlling display / printing. In the print control device, a header section including an identifier of the file itself and control data,
Corresponding to the individual character patterns stored in the character pattern file, the repeat column position sequence and repeat raster position sequence for enlargement control and the delete column position sequence and delete raster for reduction control are provided. A character display / print control device, characterized in that an enlarging / reducing control file having an enlarging / reducing control record set constituted by a position sequence is provided. 3. An enlargement / reduction control record comprising a repetitive column position sequence and a repetitive raster position sequence for enlargement control, and a delete column position sequence and a delete raster position sequence for reduction control. Each of the above-mentioned number sequences is a file, and the number of character patterns corresponding to the number of elements of the number sequence generated when scaling is performed by repeating or deleting the corresponding character pattern image in the raster and column. -A scaling, characterized in that the image is a sequence of numbers arranged in the highest quality, with each element of the sequence being a number indicating the position of the raster and column at which iteration or deletion should be performed. Control file.