JPS6090383A - Graphic display/print apparatus - 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 a character generator (CG).
actor Qenerator) f using the letter f
This invention relates to a graphic display/printing device that enlarges or reduces characters drawn in a graphic using a plurality of character sizes.

[Prior art and problems]

Conventionally, stroke tables have been used to display and print characters in graphic data. A stroke table is a vector representation of characters broken down into straight lines. The advantage of this conventional method is that text can be enlarged or reduced using vector operations, just like figures, and when enlarged or reduced, the relative position with other figures does not shift. As such, a large number of tables are required to represent complex characters such as kanji, and reducing the amount of data results in awkward character shapes. Therefore,
S)1--Re-tables are only used for alphanumeric characters and symbols.In recent years, with the spread of Japanese language processing systems, handling kanji characters in figures has become an essential function. Ta.

In this case, characters are expressed using a CG (character generator; Ch.
aracter Qenerator) is commonly used. When enlarging or reducing such figures, straight lines, arcs, etc. expressed as vectors can easily be done using vector operations, but when it comes to enlarging or reducing characters, although various methods have been devised, it is not possible to It has a magnification ratio of , and is efficient in terms of hardware size, memory amount, processing speed, etc. (there is nothing to enlarge or reduce).

[Purpose of the invention]

The present invention is based on the above consideration, and an object of the present invention is to provide a graphic display/printing device that can efficiently enlarge or reduce characters expressed in a graphic at any magnification. It is something.

[Structure of the invention]

To this end, the graphic display/printing device of the present invention is capable of displaying a plurality of characters in a graphic display/printing device that has the function of enlarging/reducing a graphic according to (2) specified magnification and graphic data sent from a computer. Equipped with a character generator that stores the character pattern of the size, when drawing the character fully enlarged or reduced according to the specified magnification above in a figure, calculates the character size according to the specified magnification and calculates the calculated font size. Select the character size to be drawn from among multiple character sizes or double-width character sizes of the character pattern originally stored in the character generator, and print all the selected character sizes. It is characterized by being printed.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of one embodiment of the graphic display/printing device of the present invention, FIG. 2 is a diagram illustrating the entire format of graphic data, and FIG.
The figure is a diagram explaining the format of data specifying a character string.
The figure shows an example drawn according to the data shown in Figure 3%
FIG. 5 is a diagram showing a drawing example in which figures and characters are enlarged or reduced.

In Figure 1, 1 is a host CPU, 2 is a microprocessor, 3 is an interface control circuit, 4 is a control memory, 5 is a main memory, 6 is an image memory, 7 is a character generator, and 8 is a print control circuit. , 9 indicates a printing mechanism section. The interface control circuit 3
It controls the interface for data transfer with PU1. The control memory 4 stores microprograms, the main memory 5 is used as a graphics data buffer 1 and other various buffers and a work area, and the image memory 6 is used for printing. There is a one-to-one correspondence with each dot.・Character generator 7 is 16X16.24X24
, 30x30, 40x40 dots and character patterns are stored. The configuration shown in FIG. 1 above is an example of application to a laser beam printer that does not use a dry electrophotographic method. As mentioned earlier, this printer has four types of font sizes: 116 x 16.
Dot characters (equivalent to 48 digits), 24 x 24 dot characters (7
), 30 x 30 dot characters (equivalent to 9 letters), and 4
It is 4 fl of 0x40 dot characters (12 characters). It is also possible to print double-width characters of each character size, and the dot pitch of the printer is 240 dots/inch.

Graphics are displayed and printed on display devices and other printers, but the basic character size is standardized to 24 x 24 dot characters. Therefore, if you use 24x24 dot characters when printing at 1x (no enlargement or reduction), exactly the same figure will be printed. The printer has the ability to print at magnifications from 0.75x to 3x, in steps of 0.125. For drawing characters, one suitable character size is selected from among the character sizes that do not exceed the printing pitch. However, the printing pitch is calculated correctly according to the magnification so that the relative position with respect to other figures is not shifted. Note that character pitch refers to the spacing between characters, and the standard character pitch is 24 dots as mentioned above.

Next, an overview of the operation of one device will be explained. The device operates as follows by the microprocessor 2 executing a microprogram stored in the control memory 4.

■ If you receive all orders with specified magnification from CPUI,
The magnification is stored in the main memory 5. Further, the actual character pitch obtained by multiplying the standard character pitch (24 dots) by the magnification is determined and similarly stored in the main memory 5.

(1) When graphic data is received from the host CPU, the graphic data is temporarily stored in a graphic data buffer stored in the main memory 5.

(2) When a print command is received from the CPU (host), the graphic data stored in the graphic data buffer is sequentially taken out and drawn in the image memory 6.

■ When all graphic data has been drawn, the print control section 8 is activated and the dots and graphics developed in the image memory 6 are displayed.
The printing mechanism section 9 prints the image.

The graphic data sent from the host CPUI includes a plurality of graphics, as shown in FIG. Here, the character string specification is also treated as one shape, and the shape data includes:
There are the following.

■ Specifying a character string ■ Specifying a straight line ■ Specifying an arc ■ Specifying full fill for squares, triangles, and circular arcs ■ Specifying line width (thick line, thin line) for specifying 1211 (solid line, dashed line, dashed line) ■ Character rotation angle ( 90°, isoo, 270°, upright characters) ■ Others Among these, ■ and ■ are not related to enlargement/reduction. Also, since ■ to ■ are expressed as vectors, they can be enlarged or reduced by calculating the vector value according to a specified magnification. This is what is done in conventional systems. As for the character 1, the drawing start coordinates thereof are determined by vector calculation. This ■
The third example shows the format of the data that specifies all the character strings.
It is a diagram.

Figure 3 (in al, 1.2, 4, W indicates the number of bytes17, the data that specifies the entire character string is the order code, count number of subsequent data, drawing start coordinate, character code string data order) Figure 3(b) shows a specific example of data specifying the character string "Drawing example", with 16
It is expressed in base numbers. FIG. 4 shows an example drawn using this data. Furthermore, when magnifications of 0.75, 2, 0, and 2.5 times are specified for this data, FIG. 5 shows an example in which drawing is performed according to the specified magnifications.

When selecting the font size, choose from sizes that do not exceed the font pitch (select all large sizes).

However, in the case of double-width characters, the shape of the characters is bad.

Normal size fonts may also be selected even if the size is smaller. The case where a magnification of 0.75.2.0.2.5 times is specified will be described below with reference to FIG.

■ When specifying a magnification of 0.75 times: X = 100 x 0.75 = 75 Y = 99 Select all dot characters. (Figure 5 (A)) In the case of specifying a magnification of 02.0 times, X = 100 X 2 = 200 Y = 99 Select 40x40 dot characters tX. (Figure 5 (
B)) When specifying a magnification of 92.5 times: X = 100 x 2.5 = 250 Y = 99 x 2.5 = 247.5 → 248 character pitch 24
X 2.5 = 60 Therefore, the font size is 30X3
Select 0 dot double-width characters. (Fig. 5 (C)) Next, we will outline the process for the table whose graphic order was "character string specification". Let me explain.

■ Multiply the magnification by the drawing start coordinates X1Y and enter the actual drawing start coordinates.

■ Based on the character pitch calculated in advance and stored in main memory, select an appropriate character size that does not exceed the character pitch.

■ A character pattern with the character code gold specified by the selected character size is retrieved from the character generator and expanded onto the image memory from the drawing start coordinates.

■ When the development of one character is completed, the drawing start coordinate is advanced by the character pitch and the development of the next character is continued.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, when drawing characters in multiple types of character sizes and shapes, multiple types of character sizes and characters with double width thereof are drawn based on a specified magnification. Select all appropriate font sizes from among the sizes,
Since it is drawn, the characters expressed in the figure can be enlarged or reduced efficiently at any magnification.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of one embodiment of the graphic display/printing device of the present invention, FIG. 2 is a diagram explaining the format of graphic data, and FIG.
The figure is a diagram explaining the format of data that specifies all character strings.
The figure shows an example drawn according to the data shown in Figure 3.
FIG. 5 is a diagram showing a drawing example in which figures and characters are enlarged or reduced.Ol...Host CPU 12...Microprocessor 13...Interface control circuit, 4...Control memory, 5... Main memory, 6...Image...
Memory, 7...Character generator, 8...
Printing control circuit 19...printing mechanism section. Patent Applicant: Fujitsu Limited Representative Patent Attorney Yotsube Kyotani

Claims (1)

[Claims] A graphic display/printing device that has the function of enlarging/reducing a graphic in accordance with specified magnification and graphic data sent from a host computer, and is equipped with a character generator that stores character patterns of multiple character sizes, and is equipped with a character generator that stores character patterns of multiple character sizes. When drawing all characters in a shape by enlarging or reducing them according to the specified magnification, the entire character size is calculated according to the specified magnification, and multiple character patterns of the character pattern stored in the character generator are calculated based on the calculated character size. A graphic display/printing device characterized by selecting a character size to be drawn from among a character size or a double-width character size of the character size, and displaying/printing using the selected character size.