Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2004-08-12
2008-11-11
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C713S322000
Reexamination Certificate
active
07451332
ABSTRACT:
Methods and apparatuses to manage working states of a data processing system. At least one embodiment of the present invention includes a data processing system with one or more sensors (e.g., physical sensors such as tachometer and thermistors, and logical sensors such as CPU load) for fine grain control of one or more components (e.g., processor, fan, hard drive, optical drive) of the system for working conditions that balance various goals (e.g., user preferences, performance, power consumption, thermal constraints, acoustic noise). In one example, the clock frequency and core voltage for a processor are actively managed to balance performance and power consumption (heat generation) without a significant latency. In one example, the speed of a cooling fan is actively managed to balance cooling effort and noise (and/or power consumption).
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Cox Keith Alan
Culbert Michael
de Cesare Josh
Falkenburg Dave Robbins
Howard Brian
Apple Inc.
Bae Ji H
Blakely , Sokoloff, Taylor & Zafman LLP
Lee Thomas
LandOfFree
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