Recording/reproducing apparatus and method
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United States of America Patent
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Nov 2, 1999
Grant Date -
N/A
app pub date -
Feb 27, 1997
filing date -
Mar 1, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An information recording/reproducing apparatus wherein exact reproduction of both wobbled address information and sync information can be realized in a recording mode as well as in a reproduction mode. The apparatus comprises first and second detectors for detecting two diametrical side portions of each track on a recording medium where a pregroove is modulated correspondingly to address information and sync information of mutually different frequency bands; a calculator for calculating a normalized track information signal on the basis of the outputs of the first and second detectors; and a third detector for detecting the address information and/or the sync signal on the basis of the output of the calculator.
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