Method and apparatus for switching clock signals in a fault-tolerant computer system
US5479648A · kind A · utility
23Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A clock switching circuit switches between clock signals generated by a local clock unit and those generated by a-system clock unit when disabling, and then subsequently enabling, the system clock unit. The clock switching circuit includes a plurality-of switching circuits that are arranged and configured to switch between the system and local clock units so as to provide a substantially uninterrupted stream of clock signals to selected components of a fault-tolerant computer system. This arrangement ensures that information stored on the selected components is not lost during disablement of the system clock unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.