Apparatus for synchronously switching frequency source
US4855616A · kind A · utility
29Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1987 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit responsive to a switching signal for dynamically changing the frequency source of a system clock. The circuit allows addition of new frequency sources without substantial changes to the circuit because its circuitry for detecting an inactive cycle period of the new frequency source is asynchronous (i.e. not clocked by the new frequency source).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.