Optical tape recorder having an acousto-optic device for scanning a radiant energy beam onto a media
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United States of America Patent
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Jun 9, 1992
Grant Date -
N/A
app pub date -
Sep 12, 1989
filing date -
Sep 12, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for optically recording information on a media. The present invention comprises an optical tape recording system for recording digital information. In the present invention, a Bragg cell, comprising an acousto-optic crystal and a transducer, is used to effect the scanning of a light beam on the media for purposes of recording or reading digital information. Further, position information is recorded on the media to allow accurate tracking of the position of the media under a read/write head of the present invention. In addition, the present invention discloses means for focussing a radiant energy beam on the media comprising a read/write head coupled with a transducer. The read/write head includes a piezoelectric layer which may effect the focussing of the read/write head under the control of a servo mechanism.
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