Current-spare switching control system
US5218606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Oct 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a current-spare switching control system provided for a data processing system having a current data processor, a spare data processor, a fault supervisor for supervising the fault of these processors, and switching units for switching from the current data processor to the spare data processor or vice versa, the current-spare switching control system includes: a storage unit for temporarily storing data bits from the fault supervisor; a discrimination unit operatively connected to the storage unit and for comparing the data bits with a reference signal and outputting a coincidence signal when the data bits coincides with the reference signal; an AND gate operatively connected to the discrimination unit for inputting the coincidence signal and a write command from the fault supervisor, and outputting a write signal when the coincidence signal coincides with the write command; a register unit operatively connected to the AND gate for inputting a data bit from the fault supervisor and outputting a switching signal to switch from the current data processor to the spare data processor or vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.