Disc recording/reproduction apparatus and method for resetting an address control circuit to maximize an address margin of the memory
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United States of America Patent
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-
Dec 30, 1997
Grant Date -
N/A
app pub date -
Jun 21, 1995
filing date -
Jun 29, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spindle servo circuit controls the rotation of a disc-driving spindle motor based on absolute address information taken from a disc. Reproduction digital data is written to and read from a RAM. An address control circuit generates a write address of the RAM by counting clocks synchronized with the reproduction digital data by a first counter, and generates a read address of the RAM by counting reference clocks by a second counter. A jitter correction circuit produces jitter-removed reproduction digital data from the RAM. The address control circuit is reset so that the address margin of the RAM is maximized when the spindle servo circuit is locked.
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