Restoring processor context in response to processor power-up
US8140872B1 · kind B1 · utility
1Cited by
299References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jun 10, 2008 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Oct 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A CPU (1) automatically preserves the CPU context in a computer memory (5) that remains powered-up when the CPU is powered down in sleep mode. By means of the preserved CPU context, the CPU is able to instantly and transparently resume program execution at the instruction of the program that was asserted for execution when the CPU was powered down. The CPU is permitted to power down frequently, even during execution of a program, and results in reduced average overall power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.