Cursor circuit for a dual port memory
US4706074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1986 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jan 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cursor generation circuit for an image display system that includes a storing circuit for storing image data. The storing circuit includes a first port to provide access to the image data to the display system and a second port to provide access to the image data to a display device for displaying the image data. A combining circuit is further provided to combine the image data with cursor data in the storing circuit when the storing circuit is being accessed by the display device. However, the combining circuit removes the cursor data from the image data when the image data is being accessed by the display system through the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.