Single chip video system with separate clocks for memory controller, CRT controller
US4660155A · kind A · utility
13Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1984 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Jul 23, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video system has a controller for controlling the transfer of data from a processor to a CRT monitor. The controller has two clocks and a CRT interface for synchronously interfacing the controller to the CRT monitor, a second interface for synchronously interfacing the controller to the processor. A first clock source provides timing for the CRT interface and is in synch with the timing of the CRT monitor. A second clock source provides timing for the processor interphase which is in synch with the timing of the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.