Claims
- 1. A display controller for inputting and outputting a signal to and from a processor to control a drawing operation used for inputting signals for storage in a refresh memory and to control a display operation used for reading out the signal stored in the refresh memory for display on a display device,wherein a display frame of said display device is divided into a plurality of frames based on predetermined timing information, wherein a plurality of display data in said refresh memory is displayed on the divided frames, and wherein said display data is determined according to whether at least one of the divided frames is superposed over another of the divided frames.
- 2. A display controller for inputting and outputting a signal to and from a processor to control a drawing operation used for inputting signals for storage in a refresh memory and to control a display operation used for reading out the signal stored in the refresh memory for display on a display device,wherein a display frame of said display device includes a base frame and a window frame on which a different display data area is displayed, wherein said display frame displays a display data area in said refresh memory in which display data, displayed on said base frame, is stored, and wherein said display data is determined according to said window frame being superposed over said base frame.
- 3. A display controller in accordance with claim 2, wherein if each pixel included in a frame is in said window frame when forming said display frame, then a pixel value on said base frame is displayed when a pixel value on said window frame on said base frame corresponds to a predetermined color.
Priority Claims (1)
Number |
Date |
Country |
Kind |
58-118228 |
Jul 1983 |
JP |
|
Parent Case Info
This is a continuation of application Ser. No. 08/989,390, filed Dec. 12, 1997 now U.S. Pat. No. 6,094,193; which is a continuation of application Ser. No. 08/627,546, filed Apr. 4, 1996, now abandoned; which is a Divisional of application Ser. No. 07/799,889, filed Dec. 2, 1991, now U.S. Pat. No. 5,696,540; which is a continuation of Ser. No. 07/198,067, filed May 24, 1988, now abandoned; which is a continuation of Ser. No. 06/626,992, filed Jul. 2, 1984, now U.S. Pat. No. 4,757,310.
US Referenced Citations (11)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0059349 |
Sep 1982 |
EP |
3201614 |
May 1990 |
WO |
Continuations (4)
|
Number |
Date |
Country |
Parent |
08/989390 |
Dec 1997 |
US |
Child |
09/596044 |
|
US |
Parent |
08/627546 |
Apr 1996 |
US |
Child |
08/989390 |
|
US |
Parent |
07/198067 |
May 1988 |
US |
Child |
07/799889 |
|
US |
Parent |
06/626992 |
Jul 1984 |
US |
Child |
07/198067 |
|
US |