Optical disk drive
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United States of America Patent
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Apr 23, 2013
Grant Date -
Sep 15, 2011
app pub date -
Sep 21, 2010
filing date -
Mar 11, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided an optical disk drive that pursues power saving and simultaneously assures data recording quality. A servo processor of the optical disk drive has a low frequency equalizer, a high frequency equalizer, a limiter, and an adder. A limit voltage value of the limiter is set by means of a control command from a system controller. The limit voltage value is set so as to become greater during a data recording period than in a data regeneration period. An output from the adder is supplied as a tracking drive signal to a tracking actuator or as a focus drive signal to a focus actuator.
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