JP3045116B2 - Graphic drawing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic drawing apparatus, and more particularly, to a graphic drawing apparatus capable of transferring and registering a graphic pattern from a higher-level device to a hardware pattern memory and selecting a plurality of drawing processes corresponding to graphic types. About.

[0002]

2. Description of the Related Art Conventionally, when a character is drawn in a graphic drawing apparatus having a character drawing process, as a first method, character pattern data is transferred from a higher-level device to the graphic drawing apparatus when the character is drawn. There is a technique described in Japanese Patent Application Laid-Open No. 63-279294 as a second method for drawing characters using a method. In this technology, a frequently used character pattern is registered after being transferred to a hardware pattern memory in advance based on a registration command, and a character is drawn with a character pattern data registered in the hardware pattern memory by a drawing command. is there.

[0003]

In the first method, since frequently used character pattern data is registered many times in a hardware pattern memory, the transfer of character pattern data occurs every time a character is drawn. Therefore, there is a problem that the processing time increases. In the second method, the hardware pattern memory transfer of the character pattern for each character drawing is not necessary, but the hardware pattern memory is required to increase the number of registered character patterns, and the cost increases. Since the number that can be registered is reduced, transfer of pattern data occurs, which causes an increase in processing time. The present invention overcomes these disadvantages.

[0004]

SUMMARY OF THE INVENTION A first graphic of the present invention is provided.
The graphics drawing device includes a graphics processor and the graphics processor.
Rendering engine connected to the Fic processor
And a system connected to the graphic processor
Comprising a memory, and wherein the graphics processor comprises:
A character is sent from a higher-level device that controls the graphic drawing device.
Transfer the pattern and the graphic drawing device control command
Transferring means for controlling the graphic drawing device control command
Command recognition means for recognizing characters
Character type or second character type or third character type
Draw character type recognition means for recognizing
Whether the character is of the second or third character type
Registered character type recognizing means for recognizing a character, and the system memory
The character pattern stored in the
Re-registration means for transferring to the engine,
Operating when the first pointer indicates the first character.
Columns, first storage means for storing the first character type,
Controlling the rendering engine to change the first character type
A first drawing control unit having a first drawing unit for drawing,
Works when the second character type
A first registration for controlling the engine and registering the second character type
Recording means for controlling the rendering engine and the second
Drawing having second drawing means for drawing the character type of
A control unit that operates when the character type is the third character type;
Second instructing means for instructing three character types;
A second engine for controlling the first character type and storing the third character type.
Storage means, and the third character type is stored in a system memory.
Second registration means for registering to the third character type
Having a third drawing control unit having a third drawing means to do,
And the rendering engine has a hardware pattern.
Memory, the first drawing control unit, and the second drawing control unit.
Control unit and the third drawing control unit.
Drawing processing means for drawing a character pattern in the air pattern memory
And the first drawing control unit, the second drawing control unit, and
The hardware pattern is designated by the instruction of the third drawing control unit.
Pattern registration processing means for registering a pattern in
I do.

The second graphic drawing apparatus of the present invention is a
The first graphic drawing apparatus of the present invention, wherein the graphic
The microprocessor was composed of a microprocessor. Departure
The third graphic rendering device according to the present invention
A command drawing device, comprising:
Writing character type recognition means, the registered character type recognition means,
The first drawing control unit, the second drawing control unit, and the second
The processing of the third drawing control unit was software processing. Departure
The fourth graphic drawing device according to the present invention
A software rendering device, wherein the system memory is
Shared with memory for storing air processing programs
Was.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a graphic drawing apparatus according to the present invention. In FIG. 1, a host device 1 controls a graphic drawing device 2. A graphic processor 4 for transferring a character pattern and a control command for controlling the graphic drawing device 2 from a host device controlling the graphic drawing device 2; a command recognizing unit 11 for recognizing the control command; A drawing character type recognizing unit 12 for recognizing whether the character to be drawn is a character type A, a character type B or a character type C; a registered character type recognizing unit 13 for recognizing whether the character to be drawn is the character type B or the character type C; A re-registration unit 24 for transferring the character pattern stored in the system memory to the rendering engine 1, a first drawing control unit 21, a second drawing control unit 22, and a third drawing control unit 23 Consists of The first drawing control unit 21 operates when the character type is A, and the character type A instructing unit 211
And a character type A storage unit 212 for controlling the rendering engine 1 and a character type A drawing unit 213 for controlling the rendering engine 1. The second drawing control unit 22 operates when the character type B is used. Character type B registration means 221 for controlling the rendering engine 1;
A character type B drawing unit 222 for controlling the rendering engine 1; the third drawing control unit 23 operates when the character type is C; a character type C instructing unit 231; a character type C storage unit for controlling the rendering engine; 23
2, a character type C drawing unit 233 for controlling the rendering engine, and a character type C registration unit 234. The system memory 5 stores a character pattern of character type C. The rendering engine 3 has a hardware pattern memory 3
2, drawing processing means 31 for drawing a character pattern in the hardware pattern memory 32 according to an instruction of the first drawing control unit 21, the second drawing control unit 22, and the third drawing control unit 23; A pattern registration processing unit 33 for registering a pattern in the hardware pattern memory 32 according to an instruction from the first drawing control unit 21, the second drawing control unit 22, and the third drawing control unit 23. .

[0007] Next, how to draw a character will be described for three cases of character type A, character type B, and character type C.

When the host device 1 instructs the drawing of the character A included in the character type A, a command A for instructing the drawing of the character A is issued.
Is transmitted to the graphic drawing device 2.
For the command A, the command recognizing unit 11 issues an instruction to the registered character type recognizing unit 13 via the transfer unit 14.
The registered character type recognizing unit 13 recognizes that the character type is included in the character type A, and issues an instruction to the character type A instruction unit 211. Character type A
The instruction unit 211 instructs the character type A storage unit 212 and the character type A drawing unit 213 based on the command A. The character type A storage means 212 stores the received character pattern A in the hardware pattern memory 3 by the pattern registration processing means 33.
Register in 2. The character type A drawing means 213 instructs the drawing processing means 31 to draw the character type A. The drawing processing means 31 performs character drawing based on the character pattern A stored in the hardware pattern memory 32. After the character is drawn, the character pattern A is not registered. When the host device 1 instructs the registration of the character pattern B of the character B included in the character type B into the hardware pattern memory 32 using the command B and the character pattern B, the command B is transferred to the transfer unit 1.
4, the command recognition unit 11 identifies the registered command B or the other, and issues an instruction to the registered character type recognition unit 13. The registration command B is registered character type recognition means 13
When the character type B is recognized as a character B included in the character type B, an instruction is issued to the character type B registration unit 221. The character type B registration unit 221 causes the pattern registration processing unit 33 to register the received character pattern data B in the hardware pattern memory 32. By the above operation, the character pattern B of the character type B is stored in the hardware pattern memory 32,
And be registered. The drawing of characters is performed by performing the following operations. When the host device 1 instructs the drawing of the character type B by the command BW, the command BW is a drawing instruction command BW of the character type B by the drawing character type recognizing unit 12 via the transfer unit 14, the command recognizing unit 11. Is recognized, an instruction is issued to the character type B drawing means 222. The character type B drawing means 222 is
Is the character pattern B in the hardware pattern memory 32.
Is used to draw characters. When continuously drawing the character B included in the character type B, the command BW is instructed from the higher-level device 1 to the graphic drawing device 2 so that the character B registered in the hardware pattern memory 32 is Character drawing is performed by pattern B. Next, the hardware pattern memory 3 of the character B2 included in the character type B
2 can be stored and registered by repeating the above operation.

Character pattern C of character C included in character type C
Is registered in the system memory 5 by the host device 1 using the command C.
And the character pattern C, the command C is
Via the transfer means 14, the command recognition means 11 identifies the registered command C or the other, and issues an instruction to the registered character type recognition means 13. When the registered character type recognition unit 13 recognizes the registration command C as a character C included in the character type C, it issues an instruction to the character type C registration unit 234. The character type C registration means 234 registers the received character pattern data C in the system memory 5. By the above operation, the character pattern C of the character type C is stored in the system memory 5 and registered. The drawing of characters is performed by performing the following operations. When the host device 1 instructs the drawing of the character type C by the command CW, the command CW is
When the drawing character type recognizing unit 12 recognizes the drawing instruction command CW of the character type C via the transfer unit 14 and the command recognizing unit 11, the character type C drawing unit 23
Give instructions to 3. The character type C storage means 232 instructs the pattern registration processing means 33 to store the character pattern C in the system memory 5 in the hardware pattern memory 32, and the character type C drawing means 233 instructs the drawing processing means 31 to render the drawing processing means 31 Performs character drawing from the character pattern C in the hardware pattern memory 32. When the character C included in the character type C is to be continuously drawn, the command CW is instructed from the host device 1 to the graphic drawing device 2 so that the character pattern registered in the system memory 5 is displayed. Character drawing is performed by C.

When the host device 1 instructs the re-registration from the character type C to the character type B by the command CW, the command CW
W is transmitted to the command recognition unit 11 via the transfer unit 14.
Is recognized by the drawing character type recognizing means 12 as a drawing instruction command CW of character type C, and an instruction is issued to the re-registering means 24. The re-registration unit 24 reads the pattern data C from the system memory 5 and issues an instruction to the pattern registration processing unit 33. The pattern registration processing means 33 stores the pattern data C in the hardware pattern memory 32 and registers it.

Although the above description has been made of the case where the character types are A, B, and C, two types of configurations are also possible, such as A and B, B and C, and C and A. Further, it is also possible to configure the graphic processor with a microprocessor, the command recognition means, drawing character type recognition means,
The processing of the registered character type recognizing means, the first drawing control unit, the second drawing control unit, and the third drawing control unit may be a program process running on the microprocessor. Further, the system memory can be shared with a memory for storing a software processing program. As described above, when the character B included in the character type B is continuously drawn, it is not necessary to transfer the pattern. When the character C included in the character type C is continuously drawn, it is not necessary to transfer a pattern.

[0012]

A first effect of the present invention is that, in a graphic drawing apparatus for drawing characters, character patterns are registered and stored in an inexpensive system memory, so that character pattern data is stored in an expensive hardware pattern memory. Many registrations,
There is no need to store it, and a low price can be realized. The second effect is that it is not necessary to receive pattern data from a host device every time a character is drawn, so that character drawing can be performed at higher speed. A third effect is that when the frequency of use of the pattern data increases, the pattern data can be registered and stored without being sent again from a higher-level device, so that high-speed processing can be performed. A fourth effect is that it is not necessary to receive pattern data from a higher-level device every time a character is drawn, so that the load on the higher-level device can be reduced and the processing efficiency of the higher-level device can be increased.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration according to an embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-order apparatus 2 Graphic drawing apparatus 3 Rendering engine 4 Graphic processor 5 System memory 11 Command recognition means 12 Drawing character kind recognition means 13 Registered character kind recognition means 14 Transfer means 21 First drawing control part 22 Second drawing control part 23 Third Drawing control unit 24 re-registration means 31 drawing processing means 32 hardware pattern memory 33 pattern registration processing means 211 character type A instruction means 212 character type A storage means 213 character type A drawing means 221 character type B registration means 222 character type B drawing means 231 character type C Instruction means 232 Character type C storage means 233 Character type C drawing means 234 Character type C registration means

Claims (4)

(57) [Claims] 1. A graphic processor and the graph
Rendering engine connected to the processor
And a system connected to the graphic processor
Comprising a memory, and wherein the graphics processor comprises:
A character is sent from a higher-level device that controls the graphic drawing device.
Transfer the pattern and the graphic drawing device control command
Transferring means for controlling the graphic drawing device control command
Command recognition means for recognizing characters
Character type or second character type or third character type
Draw character type recognition means for recognizing
Whether the character is of the second or third character type
Registered character type recognizing means for recognizing a character string, and the system memory
The character pattern stored in the
Re-registration means for transferring to the engine,
Operating when the first pointer indicates the first character.
Columns, first storage means for storing the first character type,
Controlling the rendering engine to change the first character type
A first drawing control unit having a first drawing unit for drawing,
Works when the second character type
A first registration for controlling the engine and registering the second character type
Recording means for controlling the rendering engine and the second
Drawing having second drawing means for drawing the character type of
A control unit that operates when the character type is the third character type;
Second instructing means for instructing three character types;
A second engine for controlling the first character type and storing the third character type.
Storage means, and the third character type is stored in a system memory.
Second registration means for registering to the third character type
Having a third drawing control unit having a third drawing means to do,
And the rendering engine has a hardware pattern.
Memory, the first drawing control unit, and the second drawing control unit.
Control unit and the third drawing control unit.
Drawing processing means for drawing a character pattern in the air pattern memory
And the first drawing control unit, the second drawing control unit, and
The hardware pattern is designated by the instruction of the third drawing control unit.
Pattern registration processing means for registering a pattern in
A graphic drawing device. 2. The graphic processor according to claim 1, wherein
2. The apparatus according to claim 1, wherein the processor is configured by a processor.
Graphic drawing device. 3. The command recognizing means, and the drawing character
A type recognition unit, the registered character type recognition unit,
A drawing control unit, the second drawing control unit, and the third drawing control
The processing of the control unit is software processing.
The graphic drawing device according to claim 2. 4. The software processing of the system memory.
Specially, it is shared with memory for storing programs.
4. The graphic drawing device according to claim 3, wherein: