CLOCK SIGNAL GENERATION DEVICE
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United States of America Patent
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Issued Date -
Jun 17, 2010
app pub date -
Sep 27, 2006
filing date -
Sep 29, 2005
priority date (Note) -
Abandoned
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Abstract
A clock signal generator according to the present invention includes: a wobble phase error detecting section for detecting a wobble phase error that is a difference in phase between a wobble signal, representing a wobbled shape of a track on an optical disk medium, and a clock signal; a data phase error detecting section for detecting a data phase error that is a difference in phase between a data signal, representing data that has been written on the optical disk medium, and the clock signal; a frequency control section for generating a frequency control signal to control the frequency of the clock signal based on the wobble phase error and the data phase error; and a clock oscillation section for generating the clock signal with its frequency controlled in accordance with the frequency control signal.
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