Optical disk reproducing apparatus having a cosine equalizer with boosted frequency characteristics
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United States of America Patent
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Dec 30, 1997
Grant Date -
N/A
app pub date -
Apr 3, 1996
filing date -
Apr 6, 1995
priority date (Note) -
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Abstract
An optical disk apparatus has an optical pickup, a cosine equalizer having frequency characteristics including a boosting frequency for a frequency component which has a frequency that is about twice the frequency of an RF signal reproduced from recorded data with a shortest data length, and a digital signal processor for generating recorded data from the RF signal. Irrespective to the type of reproduced data from the optical pickup, the optical disk apparatus greatly increases the quality of the reproduced data as information transfer accuracy as compared with a conventional disk optical system.
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