KR950000251B1 - High-quality font device - Google Patents

Abstract

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Description

High quality character generator

1 is a block diagram of a high quality character generator showing an embodiment of the present invention.

2 is a diagram showing an image memory.

3 is a diagram showing an example of representative point data.

4 is a diagram showing an example outputted by the representative point data of FIG.

5 is a diagram showing a reduced output example.

5A is a diagram showing an example of an output of 0.7 times.

Fig. 5B is a diagram showing an example of output of 0.5 times.

5C is a diagram showing an example of an output of 0.3 times.

6 is a diagram showing an example of enlarged output.

7 shows an example of a pressure value.

Fig. 7A is a diagram showing an example of pressure values of the first letter pattern.

7B is a diagram showing a pressure value of the second character pattern.

8 shows raw data of pressure change points.

9 is a magnification of 5 times the result of interpolation of handwriting.

10 is a magnification of 5 times the final result.

11 is a diagram showing a calculation example of interpolation processing.

12 is a diagram showing a pattern generator output example.

Fig. 13 is a diagram showing an example of output in a character style with flowing fonts.

13A and 13B show an example of outputting independently for each stroke.

13C and 13D show an example in which a break point of each stroke is raised to connect to the next stroke.

13e and f show an example in which each stroke is continued.

14 is a block diagram of a conventional character font generator.

* Explanation of symbols for main parts of the drawings

11,21: representative point reading means 12,22: representative point file

13 to 15 interpolator 16: pattern generator

17: Reducer 18,25: Image Memory

The present invention relates to a high quality character generator for creating and developing a character font.

Conventionally, in the dot matrix type character font generator used in an information processing apparatus, when generating diagonal fonts using a plurality of dots, various data compression methods have been adopted.

14 is a block diagram of a conventional character font generator (see Japanese Patent Application Laid-Open No. 63-163891).

In the above character font generating apparatus, a skeleton line calculator is extracted by a representative point file reading means 21 constituting a character from a representative point file 22 and a line constituting a character called a skeleton line by an approximation method. Obtained by (23). Next, the pattern of the shape according to the formula information is determined and output to the image memory 25 for each point forming the skeleton line by the formula information calculator 24.

In the high-quality character generating device having the above-described configuration, if a natural and beautiful character is to be obtained, the representative point increases and the information amount per character increases. Therefore, a large number of characters are ROMed and put into an output device such as a printer or a CRT. It is difficult to put. In addition, you need to determine another representative point if you change the font or if it appears to be a concatenation of characters.

The present invention solves the problems of the conventional high quality character generating device, reduces the amount of information per character, changes the typeface without changing the representative point or the mathematical information, or connects high quality characters. It is an object to provide a generator.

Therefore, in the high quality character generator of the present invention, font data is formed from the coordinates of the representative point and the pen pressure information, and the characters are generated by interpolating the font data.

Therefore, the representative point file which stores the representative point data which consists of X coordinate, Y coordinate, and a pressure value, representative point reading means which reads the representative point data of this representative point file, inputs representative point data, and interpolates An interpolator for processing is provided.

The interpolator is provided for each of the X coordinate, the Y coordinate, and the pressure value, and the interpolator of the X coordinate and the Y coordinate is directly connected to the reducer through the pattern generator, and the X interpolator is connected to the reducer. Coordinates and Y coordinates are directly input to the reducer, and pressure values are input to the reducer through the pattern generator.

The reducer is connected to an image memory, and output data of the reducer is input. In addition, the said representative point data is made into the data of a pressure change point.

According to the present invention, when the representative point data is read from the representative point file storing the representative point data composed of the X coordinates, the Y coordinates, and the pressure values as described above, the magnification to be displayed as the representative point data is determined, and the number of times is multiplied. Data is subjected to interpolation by the interpolator. The data is multiplied once again inside the interpolator.

Then, a pattern of a predetermined size is generated at the predetermined coordinate position by the interpolation data, which is returned to the data of the appropriate size by the reducer and input into the image memory.

EXAMPLE

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a high quality character generator according to an embodiment of the present invention.

In the figure, the representative point reading means 11 extracts the representative point of the character from the representative point file 12 by one point, and multiplies the magnification of the character to be displayed, thereby forming the X coordinate, Y coordinate, and the like. The pen pressure information at the coordinate position, that is, the pressure value can be obtained.

These values are input to the interpolators 13-15, respectively, and interpolation point data between each representative point is output from this interpolator 13-15.

Thereafter, if information in each representative point is set in the interpolators 13 to 15, the information of each point forming the handwriting from the interpolators 13 to 15 is output. The X coordinate, Y coordinate, and pressure value of the output information are multiples of integer values for high quality and are output from the interpolators 13-15.

Here, the pattern of the size according to the pressure value can be generated in the pattern generator 16. That is, pattern information for every single row can be generated from this pattern generator 16, and this is input to the reducer 17 together with the X coordinate Y coordinate value already obtained. The reducer 17 reduces each input value and outputs it to the image memory 18 as pixel information.

2 is a diagram showing an image memory.

As shown in the figure, the image memory 18 arranges a storage area up to the pixel 18a on the (X, Y) two-dimensional plane, and is white or black with respect to a point designated by the (X, Y) coordinates. It consists of a storage device that can store information.

Here, the output example at the time of making a pattern a circle and expressing a pressure value by the radius of a circle is demonstrated.

3 is a diagram showing an example of representative point data, FIG. 4 is a diagram showing an example output by the representative point data of FIG. 3, and FIGS. 5 and 6 are respectively changing magnifications inputted to the representative point reading means 11; It is a figure which shows the example which outputted. 5 is a diagram showing an example of output of 0.7 times, 5b is a diagram showing an example of output of 0.5 times, and 5c is a diagram showing an example of output of 0.3 times, and FIG. Fig. Shows a magnified output example.

In FIG. 3, each value of a pressure value, an X coordinate, and a Y coordinate is shown as a representative point in each row. A plurality of these representative points gather together and form the stroke of the figure which comprises a Chinese character, for example. To indicate the end of the stroke, data of -1 between the data is set.

As shown in FIGS. 4 to 6, high quality is maintained even when the output is reduced or enlarged.

The data necessary for generating the character font by the high quality character generator is solved very little compared with the conventional method. This is because, in the high-quality character generator of the present invention, printing is performed mainly on the data of the pen pressure, while printing on the conventional handwriting information data. Therefore, each data is represented by X coordinate, Y coordinate, and a pressure value.

7 is a diagram showing an example of the pressure value, FIG. 7A is a diagram showing an example of the pressure value of the first character pattern, and FIG. 7B is a diagram showing an example of the pressure value of the second character pattern.

As shown in the figure, the pressure value at the writing start contacting the brush tip with the paper, the pressure value at the power-off points 31 and 32, the pressure value at the brush stopping point 33, and the pressure point at the writing point 34 to the brush tip 1, the pressure value of the point 35 which the brush presses strongly is made into 3, and the pressure value is divided into four types, and it plots centering around a pressure change point.

8 is a diagram showing raw data of pressure change points. As a result of using the X coordinate, the Y coordinate, and the pressure value as data, as shown in the figure, the original data can be configured with as few representative point information as the character cannot be discriminated.

The interpolation result of FIG. 9 is shown in FIG. 9, and the final result is magnified by 5 times in FIG.

Next, the operation of the interpolators 13 to 15 will be described using equations based on the data in FIG.

In the case of using a B-spline of 4 digits for the interpolators 13 to 15,

X = a _x + b _xt + c _xt ² + d _xt ³

Y = a _y + b _yt + c _yt ² + d _yt ³

However, it is assumed that 0≤t≤1. The values of a _x , a _y , b _x , b _y , c _x , c _y , d _x , and d _y can be obtained by the following equation.

a _x = (X ₀ + 4X ₁ + X ₂ ) / 6,

a _y = (Y ₀ + 4Y ₁ + Y ₂ ) / 6;

b _x = (-3X ₀ + 3X ₂ ) / 6,

b _y = (-3Y ₀ + 3Y ₂ ) / 6;

c _x = (3X ₀ + 6X ₁ + 3X ₂ ) / 6,

c _y = (3Y ₀ + 6Y ₁ + 3Y ₂ ) / 6;

d _x = (-X ₀ + 3X ₁ -3X ₂ + X ₃ ) / 6,

dy = (-Y ₀ + 3Y ₁ -3Y ₂ + Y ₃ ) / 6

Here, when (X ₀ , Y ₀ ) to (X ₃ , Y ₃ ) are side by side, approximately between (X, Y), (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ) It can be seen that the points on the passing curve are collected.

Therefore, when the magnification of the reducer 17 is 1/6, the coefficient of 1/6 of a _{x to} d _x and a _{x to} d _y disappears and can be treated as an integer. The same applies to the pressure value.

Next, FIG. 11 is a figure which shows the calculation example of an interpolation process.

From the representative point file 12 (refer to FIG. 1), the data of FIG. 3 is extracted in a single row by the representative point reading means 11. The first to fourth rows represent data at points 31, 33, 34, and 32 in FIG. In the first reading, the pressure values are 0, X coordinate 18, and Y coordinate 2, which are sent to the corresponding interpolators 13 to 15, respectively. At this time, the result of determining the magnification of the external input is sent, but it is multiplied here.

Each interpolator 13 to 15 clears all the preceding three points consecutively from the first data received with the received data, and at the time when the data (2, 22, 5) of the next row is received (P). , X, Y) = (0,108,12) and (0,109,13).

12 is a diagram illustrating an example of a pattern generator output.

In the pattern generator 16, the circle | round | yen of the radius P is drawn centering on the coordinates (X, Y). For example, the pattern generator 16 which received the pressure value 0 outputs the information of the pattern (circle = point of radius 0) of size 0.

As the output of the pattern generator 16, horizontal line information (Y coordinate, X coordinate minimum value, X coordinate maximum value) forming a pattern, for example, (12, 108, 108) is output.

In this case, each value is reduced in the reducer 17 according to the following expression, and (2, 18, 18) is sent.

Y coordinate = (Y coordinate + horizontal Y coordinate) / 6

X coordinate minimum = (X coordinate + horizontal line X coordinate minimum) / 6

X coordinate maximum = (X coordinate + horizontal line X coordinate maximum) / 6

One horizontal line is output from the above three pieces of information to the image memory 18.

Subsequently, data (1, 22, 5) of the third row is sent to the interpolators 13-15, and all point information between (0, 18, 2) and (2, 22, 5) is sequentially output. do.

Then, horizontal line elements constituting a pattern (circle) are output for each pair of points, and an aggregate of black circles having a radius according to the input is formed on the image memory.

Representative points are then read, and the aggregate of circles forms letters as shown in FIG. However, when the pressure value is negative, the end signal is given to the interpolators 13 to 15 at the representative point reading means 11 as opposed to the end of the stroke, and the interpolation with the next point is stopped. If you don't stop it, it's like a glyph.

FIG. 13 is a diagram showing an example of output in the case where the font is a flowing character style. 13 (a) and 13 (b) show an example of output independently for each stroke, and 13 (c) and (d) show an example in which a break point of a stroke is raised and a connection is made to the next stroke. Fig. 13 (e) and Fig. 13 (f) are diagrams showing examples of successive strokes, and are also connected to the following characters. The outputs of the thirteenth (b), (d), and (f) magnify five times.

When either of the representative points is read out, the fonts can be easily changed because the data need only be distinguished from each other to be continuous or independent.

In addition, it is also possible to set it to gray scale characters by setting the output density to half.

The number of outputs (FIG. 11) in the interpolators 13-15 is equal to the numerical value of the longest distance from the adjacent point among X <_0> -X <_3> , Y <_0> -Y <_3>, and P <_0> -P <_3> . Choose to be a number.

^{a + bt + ct 2 + dt} 3 t to 1 / n in the sikimeuroseo continuously changed between (where, n is the number of output) by 0 to 1, and to carry out without a break interpolation.

In addition, this invention is not limited to the said Example, Various deformation | transformation are possible based on the meaning of this invention, These are not excluded from the scope of this invention.

As described above, according to the present invention, the representative point data is read from the representative point file that stores the representative point data composed of the X coordinate, the Y coordinate, and the pressure value, and the magnification is determined by the representative point data. Simultaneously with the interpolation process, a pattern having a predetermined size is generated at the predetermined coordinate position by the interpolation data, and the size of the pattern is reduced so that a character of high quality arbitrary magnification can be generated with little information.

The character "永" shown as an example is composed of 129 bytes. Since the original data is 48x48 dots, if each dot is defined, 48x48 bits / 8 bits = 288 bytes are required.

In the high quality character generating device of the present invention, it is also possible to extrude by two bytes from the maximum value (3,47,47) to the pressure value X coordinate point and Y coordinate point.

Since -1 in Fig. 3 is a short code, if one byte is used, it is 88 bytes in total, and it ends in about one third of the amount compared to the definition of dot string.

Claims (1)

A high quality character generator, comprising: (a) a representative point file for storing representative point data composed of X coordinates, Y coordinates, and pressure values; (b) representative point reading means for reading data of the representative point file; c) an interpolator for inputting representative point data, performing interpolation processing, (d) means for inputting the X and Y coordinates from the interpolator directly into the reducer, and inputting the pressure values into the reducer through the pattern generator, and (e A pattern having a size proportional to the pressure value; and (f) the representative point data is the pressure change point data, and (g) the pattern generator has a means proportional to the pressure value. High-quality character generator, characterized in that for generating.