Power management with dynamic frequency adjustments
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United States of America Patent
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Feb 5, 2013
Grant Date -
Aug 13, 2009
app pub date -
Feb 11, 2008
filing date -
Feb 11, 2008
priority date (Note) -
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Abstract
A central processing unit (CPU) can specify an initial (e.g., baseline) frequency for a clock signal used by a device to perform a task. The CPU is then placed in a reduced power mode. The device performs the task after the CPU is placed in the reduced power mode until a triggering event causes the device to send an interrupt to the CPU. In response to the interrupt, the CPU awakens to dynamically adjust the clock frequency. If the clock frequency is reset to the baseline value, then the CPU is again placed in the reduced power mode.
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