Method and system for keeping time across a multiprocessor platform
US6138243A · kind A · utility
27Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | May 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system, method and computer program are provided for maintaining time accurately and synchronously across a plurality of interconnected processors in a data processing system. Each processor has its own time base register and access to a single time delta variable. Time is reported as the sum of a processor's time base register and the time delta variable. Time base registers are set only at system initialization or boot; thereafter, any system wide time changes are effected by changing only the time delta variable value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.