Adaptive system for optimizing disk drive power consumption
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United States of America Patent
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Aug 6, 1996
Issued Date -
N/A
app pub date -
Nov 1, 1995
filing date -
Dec 30, 1993
priority date (Note) -
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Abstract
A disk drive power manager that compares energy usage with a predetermined profile to select one of several reduced-power operating modes. An energy usage register is updated at regular intervals according to the energy used during each time interval. An attenuated average energy usage value is obtained by attenuating the energy usage measures over time and integrating the results. The average energy level is compared with several predetermined energy threshold profiles to select a full- or reduced-power operating mode. Operating mode selection automatically adapts to the usage pattern to optimally balance power consumption with operational accessibility.
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