Optical disc apparatus with selectively shiftable seek operation capture range
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United States of America Patent
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Jun 3, 1997
Grant Date -
N/A
app pub date -
Apr 27, 1995
filing date -
Apr 28, 1994
priority date (Note) -
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Importance
Abstract
An optical disc apparatus which expands the PLL pulling frequency range, and shortens the time required to start PLL pulling, by a simple construction. The linear velocity detection signal V.sub.e2 which is sent from the linear velocity detecting means 11 is added to the controlling voltage V.sub.e1 at the adding means 10, and sent to the voltage controlled oscillator 9 of the PLL circuit 6.
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