Optical disc reproduction method and optical disc reproduction apparatus
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United States of America Patent
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Mar 7, 2000
Grant Date -
N/A
app pub date -
Jan 12, 1998
filing date -
Jan 10, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides an optical disc reproduction method and an optical disc reproduction apparatus capable of accurately extracting a BCA code without being affected by mirror modulation of an RF signal. An RF signal is peak-held via a buffer consisting of an operational amplifier according to time constants of a capacitor and a resistor. This RF signals subjected to low pass filter processing by the capacitor and the resistor prior to a predetermined binarization, thus enabling extraction of a BCA signal form the aforementioned RF signal.
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