Claims
- 1. An apparatus for performing a raster scanning display operation on a display including a plurality of scanning lines, comprising:
- storing means for storing image data to be displayed;
- updating means, including a program, for performing an updating operation to update a portion of the image data stored in the storing means to different, updated image data, the updated image data being determined by said updating means using a command of the program; and
- drive means for driving the display to perform the display operation in accordance with the updated image data,
- wherein said updating means performs the updating operation without accessing the previously stored image data and simultaneously supplies line information designating one of the scanning lines on which to display the updated data to said drive means.
- 2. An apparatus according to claim 1, wherein said image data is generated in accordance with a command of application software.
- 3. A display apparatus according to claim 2, wherein the display is a ferroelectric liquid crystal display.
- 4. An apparatus according to claim 1, wherein said updating means executes processing for supplying said line information with software of a central arithmetic processing unit and of a graphic controller.
- 5. An apparatus according to claim 1, wherein said drive means sequentially selects a plurality of scanning lines of the display to perform the display operation.
- 6. A drive control apparatus for controlling driving of a display device provided with drive means for sequentially selecting a plurality of scanning lines of a display to perform a raster scanning display operation, said drive control apparatus comprising:
- storing means for storing image data to be displayed; and
- updating means, including a program, for updating a portion of the image data stored in the storing means to different, updated image data, the updated image data being determined by said updating means using a command of the program,
- wherein said updating means includes means for performing an updating operation without accessing the previously stored image data and for simultaneously supplying line information designating one of the scanning lines on which to display the updated data to said drive means.
- 7. A display apparatus comprising:
- a display including a plurality of scanning lines;
- storing means for storing image data to be displayed;
- drive means for sequentially selecting a scanning line of said display and for driving said display to perform a raster scanning display operation, in accordance with the image data stored in said storing means; and
- updating means, including a program, for performing an updating operation to update a portion of the image data stored in the storing means to different, updated image data, the updated image data being determined by said updating means using a command of the program;
- wherein said updating means performs the updating operation without accessing the previously stored image data and simultaneously supplies line information designating one of the scanning lines on which to display the updated data to said drive means.
Priority Claims (1)
Number |
Date |
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Kind |
3-265444 |
Sep 1991 |
JPX |
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Parent Case Info
This application is a continuation, of application Ser. No. 08/680,974 filed Jul. 16, 1996, now abandoned, which is a continuation of application Ser. No. 08/330,601 filed Oct. 20, 1994, now abandoned, which is a continuation of application Ser. No. 07/945,399 filed Sep. 16, 1992, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (2)
Number |
Date |
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0368117 |
May 1990 |
EPX |
0416172 |
Mar 1991 |
EPX |
Continuations (3)
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Number |
Date |
Country |
Parent |
680974 |
Jul 1996 |
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Parent |
330601 |
Oct 1994 |
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Parent |
945399 |
Sep 1992 |
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