System and method for entering and exiting sleep mode in a graphics subsystem
US10817043B2 · kind B2 · utility
1Cited by
85References
31Claims
0Family size
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Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique is disclosed for a graphics processing unit (GPU) to enter and exit a power saving deep sleep mode. The technique involves preserving processing state within local memory by configuring the local memory to operate in a self-refresh mode while the GPU is powered off for deep sleep. An interface circuit coupled to the local memory is configured to prevent spurious GPU signals from disrupting proper self-refresh of the local memory. Spurious GPU signals may result from GPU power down and GPU power up events associated with the GPU entering and exiting the deep sleep mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.