Power supply voltage supply circuit and disk apparatus
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United States of America Patent
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Apr 26, 2011
Grant Date -
Sep 17, 2009
app pub date -
Nov 19, 2008
filing date -
Mar 17, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Aspects of the present embodiment are related to a power supply voltage supply circuit and the disk apparatus that are capable of reducing power consumption in data writing and reading. The power supply voltage supply circuit includes a data processing unit writing data onto a disk medium and/or reading data from the disk medium=having a plurality of zones assigned a cylinder number, a data input-output unit transmitting data to the data processing unit at a transfer rate in accordance with the zones, a power supply voltage supply unit supplying a voltage to the data input-output unit and a control unit controlling the power supply voltage supply unit in order to supply the voltage in accordance with the transfer rate.
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