Signal recording and reproducing apparatus for an opto-magnetic disk
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United States of America Patent
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-
Mar 22, 1988
Grant Date -
N/A
app pub date -
Mar 26, 1986
filing date -
Mar 27, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal recording and reproducing device for use with an opto-magnetic disk having a number of concentric recording tracks. An optical head sweeps a given track at least twice during a time interval equal to a predetermined reproduction time for the track. Erasure signals and recording signals are supplied to the optical head during the first time sweeping and the second time sweeping, respectively, in order to effect signal erasure and recording. At the time of switching from the first time sweeping to the second time sweeping, the address data indicating the end point written on the terminal portion of the previously recorded signal area are sensed, and the recording is effected from the thus sensed recording end point.
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