Clock switching circuit for asynchronous clocks of graphics generation apparatus
US5197126A · kind A · utility
12Cited by
12References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit is described for providing switching between two asynchronous clocking signals in a graphics generation apparatus. In transitioning from one clocking signal to the other, the ending clocking signal ends at the end of a complete cycle, and the beginning clocking signal begins at the beginning of a new cycle. There is dead time between the clocking signals long enough to prevent transients which could disturb the operation of the system. The clocking signals are used to control data transfers of a graphics processor within the graphics generation apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.