Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2011-05-10
2011-05-10
Cao, Chun (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S320000
Reexamination Certificate
active
07941683
ABSTRACT:
A processor can operate in three different modes. In an active mode, a first voltage is provided to the processor, where the first voltage is sufficient to allow the processor to execute instructions. In a low-power mode, a retention voltage is provided to the processor. The processor consumes less power in the retention mode than in the active mode. In addition, the processor can operate in a third mode, where a voltage is provided to the processor sufficient to allow the processor to process cache messages, such as coherency messages, but not execute other normal operations or perform normal operations at a very low speed relative to their performance in the active mode.
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Branover Alex
Helms Frank P.
Steinman Maurice
Advanced Micro Devices , Inc.
Cao Chun
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