Apparatus for the control of an access to a video memory
US5030946A · kind A · utility
18Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1988 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Mar 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for the control of an access to a video memory comprises a memory width register having a content of a number of dot periods by which an access timing is determined to address a video memory. Therefore, an access timing is easily controlled dependent on a memory speed of the video memory only by changing the content of the memory width register. When the video memory is accessed during a display cycle of the video memory, video data may be stored in a buffer memory, and transferred from the buffer memory after the display cycle is finished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.