Adjusting voltage delivered to disk drive circuitry based on a selected zone
AssigneeWestern Digital Technologies, Inc.
InventorHanan Kupferman
Life of this patent
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Abstract
A disk drive includes a disk comprising a plurality of zones, a clock for generating a timing signal having a timing frequency, a voltage controller for providing a supply voltage, and circuitry coupled to the supply voltage and responsive to the timing frequency. Power may be conserved by receiving a host command; selecting one of the plurality of zones based on the host command; and adjusting the timing frequency and the supply voltage provided to the circuitry based at least in part on the selected zone.
Claims29
A method for power conservation in a disk drive having a disk comprising a plurality of zones, a clock for generating a timing signal having a timing frequency, a head for accessing the plurality of zones, a voltage controller for providing a supply voltage, and circuitry coupled to the supply voltage and responsive to the timing frequency, the method comprising:
- receiving a host command;
- selecting one of the plurality of zones based on the host command;
- and
- adjusting the timing frequency and the supply voltage provided to the circuitry based at least in part on the selected zone.
A disk drive comprising:
- a disk having a plurality of zones, wherein a first zone comprises data recorded at a first data rate;
- a head actuated over the disk for generating a signal representing the data;
- a clock for generating a timing signal having a timing frequency, and for adjusting the timing frequency in response to the first data rate;
- circuitry responsive to the timing frequency;
- and
- a voltage controller for adjusting a supply voltage provided to the circuitry in response to the first data rate.
A method for power conservation in a mobile device having a host processor for issuing host commands, a battery, a voltage controller coupled to the battery for providing a supply voltage, a disk comprising a plurality of zones, a head for accessing the plurality of zones, a clock for generating a timing signal having a timing frequency, and circuitry coupled to the supply voltage and responsive to the timing frequency, the method comprising:
- generating a host command;
- selecting one of the plurality of zones based on the host command;
- and
- adjusting the timing frequency and the supply voltage provided to the circuitry based at least in part on the selected zone.
A mobile device comprising:
- a host processor for issuing host commands;
- a battery;
- a disk having a plurality of zones, wherein a first zone comprises data recorded at a first data rate;
- a head actuated over the disk for generating a signal representing the data;
- a clock for generating a timing signal having a timing frequency, and for adjusting the timing frequency in response to the first data rate;
- circuitry responsive to the timing frequency;
- and
- a voltage controller coupled to the battery and for adjusting a supply voltage provided to the circuitry in response to the first data rate.
Dependencies are inferred from the claim text.