Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1993-12-30
1995-09-19
Young, W. R.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369116, 360 69, 395750, G11B 1900
Patent
active
054522773
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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Bajorek Christopher H.
Glaser Thomas W.
Klaassen Klaas B.
Nielsen Charles R.
Santana George R.
International Business Machines - Corporation
Tran Thang V.
Young W. R.
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