Multi-track optical read/write head
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United States of America Patent
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Sep 1, 1998
Grant Date -
N/A
app pub date -
Dec 9, 1996
filing date -
Dec 9, 1996
priority date (Note) -
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Abstract
A multi-track optical read/write head uses a light valve to split the beam from a single laser diode to a large number of channels, recorded on an optical disc or tape. Readout is achieved by line illumination and a linear array of detectors. The number of channels in the light valve exceeds the number of recorded tracks and a single light valve channel is smaller than the optical resolution of the system. The division into a large number of channels allows to modulate the width of the written mark in order to achieve increased data recording density.
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