JPS61143792A - Character pattern generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to highly practical text processing that can easily generate character patterns with variable sizes. Popular.

There is a strong desire for higher quality hard copy output.

It is also desired that the size of characters output as hard copies can be varied and set in accordance with the specifications.

However, in conventional computer systems, hard copy output of characters is performed by extracting a pre-registered character pattern t1 according to its character code and using it as a dot i-trix. It was very difficult to change the size of the character pattern. Therefore, the number of choices for double-width or half-width characters and the size of the characters is -[.

Therefore, in order to make it possible to output text-sized text patterns, conventional fonts have been developed! Parameterize and mathematical
-1, it is considered that character patterns of various thicknesses can be created by calculation processing. As a representative example, RiX −x (Knuth
)'s Metafont method is known. However, these character pattern generation methods
In both cases, it was difficult to create the underlying character pattern, and since the pattern data was expressed using complex parameters, it took a huge amount of time to calculate the characters. In addition, although it is theoretically possible to generate character patterns of various sizes, the control and processing for varying the size of character patterns is complicated, so this poses a major problem in terms of practicality. there were.

Taking these circumstances into consideration, there is a method in which information on the position of the representative point of a character pattern/stroke and information on the thickness of the stroke at each representative point is stored, and this information is used to obtain the outline data of a single character pattern. is proposed.

However, with this method, when a stroke with a small curvature such as a hiragana character, that is, a stroke with a lot of roundness, is generated, if the stroke is made thicker than a certain level, the problem arises that the contour lines will intersect.

[Object of the invention].

The present invention takes this situation into consideration, and its purpose is to provide strokes with large curvatures by having I & large thickness information in addition to standard thickness information. An object of the present invention is to provide a character pattern generator.

[Summary of the Invention] The present invention provides representative point position information of a character pattern/stroke;
A storage device that stores standard stroke thickness information and maximum stroke thickness information at the representative points, and data on strokes connecting each representative point are obtained from the positional information of the representative points successively output from this storage device. , the outline data of the character pattern indicated by the stroke from the standard and maximum thickness information of the representative point! It is characterized by having the means to seek it.

[Effects of the invention: According to the invention, strokes with large curvature are also more natural.]
Since it can be generated as a single turn, its practical advantage is enormous.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to one drawing.

FIG. 1 is a schematic block diagram of an embodiment of the present invention, in which numeral 1 denotes a character pattern storage device that stores a plurality of character pattern data. The character pattern data registered in the storage device 1 includes, for example, position information (x, y) of the representative points "eb+'1 to 0g" of the stroke C of the character pattern person as shown in FIG.

Standard thickness information Ss, Sr and maximum thickness information m for each point
e and mr are given as basic parameters. In addition to this, attribute information (V) such as ``edge'' and ``extrusion'' of the representative point is also given. The data of the representative points of the character pattern indicated by these pieces of information are registered in the storage device 1 in the format shown in FIG. 3, for example, with the format information (F).

FIG. 4 shows data regarding the lower right part of the character pattern shown in FIG. 2, the stroke "ru". In addition, here 1
The size of the character pattern frame is (X=1000°Y=10
00), that is, the size of a dot (1000xlOOOO), and the position of each representative point is shown as a relative position within the above frame. t7
(0000) of the t7 oit code (F) is the starting point of the d character pattern stroke, and (0001) is the middle part of the stroke! , and (0002) fl indicates the end point of the stroke, and other format foots such as intersections are used. The code (0001) of attribute information (V) indicates that it is the so-called "starting" part of the character pattern, and other attribute information includes "scales", "feet", and "serifs". .

A code indicating an attribute such as "cologne" is given.

The character pattern data registered in the storage device 1 in this manner is read out from the storage device 1 according to the character designation, and is led to the arithmetic unit 2. This calculation unit 2F'i receives the character pattern output specifications set in the registers 3.4.5, that is, the vertical dimension GX, the horizontal dimension GY, and the character line width GW, and then outputs the character pattern. 0, which performs reduction/enlargement processing on data; that is, 1 as described above.
Character pattern data #''t1 The size of the frame is (100
0x1000) is registered as a dot. On the other hand, if the output character pattern is to be displayed and output in the size of (32×32) dots, the value "32" is set in each of the OX register 3 and GY register 4. If the line width of the character pattern to be output with this (32×32) dot size is to be a general standard line width, the value “32” is also set in the GW register 5. If % (32X32) dot display is 1
If the display hand pattern is thick (t, 4), data such as r48J is set in the GW register 5, and if it is thin and narrow, data such as "24" is set in the GW register 5. According to the data set in 3.4.5.

Arithmetic processing is performed on the na character pattern data read from the storage device 1 to set its size. The interpolation unit 6 receives the output from the calculation unit 2 and calculates the position of each point of the stroke connecting each representative point from the position information of the representative point of the stroke according to an algorithm such as the spline interpolation method or the parabolic mixing method. ing. and,
The bit stroke generating unit 7 obtains the outline of the character pattern from the thickness information of each point of these strokes, and the output pattern buffer memory 8 stores data of the area concave by the outline cape as the character pattern. It is now stored as .

That is, the character pattern data shown in the above-mentioned figure W42 and Table 1 is obtained from the storage device 1, and is converted into (32
) When outputting as a dot pattern, the calculation unit 2, according to the control flow shown in FIG. Calculate. That is, the position coordinates ox, oy of the representative point in the output coordinate system are calculated according to the number of dots in the output character pattern. After that, the attribute information is discriminated and it is determined whether or not it is a decorative character pattern part such as the above-mentioned t "Tsukidashi" or "Uroko".

If it is not a decorative part, the m width OZ, OU is calculated asymptotically approaching the thickness me, mr, and the line 1 is calculated according to the size of one character pattern.
! For example, when the representative point that changes the value is a decorative part such as the above-mentioned ``tsukidashi'' or ``scales''.

In order to prevent the decorative part from becoming unintentionally large or small, calculate the line width.

Corrections have been made. This process is performed on data of all representative points of the character pattern.

The interpolation unit 6 calculates each stroke point between each representative point from the position information corrected by equations (11 and (2)) according to an algorithm such as spline interpolation, thereby reproducing the stroke.

Thereafter, the outline data of the character pattern is obtained from such data in the following manner.

The i#th point on the stroke is Pi, the contour point on the right side of the stroke progressing direction is PRi, and the contour point on the left side is PLi.
shall be. At this time, when L=Xi+t -XI M=Yill -Yi N=, /'τZ4y1* is set as Sadasaki, the right contour point PRi is PRi = (XRi, YRi), and X R+ =X I + Z t ig NL YRi = Yi −Zi * − is calculated as t
' 6 cf"1, and the left contour point PLi is PLi = (XLl, YLi), X Li = X i + U l * sYLl = Y
It is determined as i-Ui end π. Contour point P obtained in this way
The connection between Ri and PLi represents the outline of the output character pattern. By filling the inside of the pattern indicated by this outline with, for example, dots,
Figures 6(m) and (b) show examples of how the above character pattern is expressed by a dot matrix.
) The friend output as a dot is shown in Figure 6 (1), and the output with thicker line #4 is shown in Figure 4 (b).

This figure 6(b) shows that the character line width should be increased (, G
This shows an example in which "48" is set as the W data.0 As can be seen from this example, since the thickness does not increase linearly, a more natural pattern can be generated.

In this way, according to the present device, a character pattern of a desired size can be generated by very simple processing. Moreover, since 9 can be given as a representative point of the stroke of character pattern data, it is very easy to create the base of the original data. The control parameters do not become complicated as in the conventional method. Therefore, its practical advantage is enormous; the ot ft b processing is simple and can be performed at high speed, so it can be used as a hard copy device for each Yuzu computer system.

Furthermore, for strokes with large curvature, it is also possible to save memory by omitting the maximum thickness.

It should be noted that the present invention is not limited to the above-mentioned practical example. For example, it is of course possible to change the aspect ratio of the output character pattern. It goes without saying that the type of the secondary character pattern is not particularly limited, such as kanji, numbers, and alphabetic characters. In short, the present invention can be modified in various ways without departing from its gist.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a schematic diagram of the device, Fig. 2 is a diagram showing an example of an original pattern, Fig. 3 is a diagram showing an example of the format of character pattern data, and Fig. 3 is a diagram showing an example of the format of character pattern data. Figure 4 shows the data of the character pattern stroke "ru", Figure 5 shows the flow of character pattern size setting processing, and Figures 6 (a) and (bJ show examples of output character patterns). It is a figure. 1... Character pattern storage device 2... Arithmetic unit 3,
4.5...Register 6...Interpolation section 7...Dot stroke generation section 8...Output pattern buffer memory Fig. 1 Fig. 3 Fig. 4 Fig. 2 Fig. 5

Claims (2)

[Claims] (1) A storage device that stores representative point position information of a character pattern/stroke, standard stroke thickness information at the representative point, and maximum stroke thickness information, and a position of the representative point read from this storage device. The present invention is characterized by comprising means for obtaining stroke data connecting each representative point from the information and obtaining outline data of a character pattern indicated by the stroke from the standard and maximum thickness information of the representative points. Character pattern generator. (2) The means for obtaining stroke data connecting each representative point from the position information of the representative points is a method that interpolates the series of position information to obtain stroke position information between each representative point. The character pattern generating device according to item 1.