Methods and apparatuses for controlling the temperature of a data processing system
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United States of America Patent
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Nov 11, 2008
Grant Date -
Mar 3, 2005
app pub date -
Aug 12, 2004
filing date -
Aug 15, 2003
priority date (Note) -
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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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