Optical information recording media and optical information read/write device
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United States of America Patent
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Sep 5, 1995
Grant Date -
N/A
app pub date -
May 25, 1994
filing date -
May 26, 1993
priority date (Note) -
In Force
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Importance
Abstract
Both guide grooves and lands of an optical information recording medium constitute information tracks, the depth of the guide groove being between approximately .lambda./8 and approximately .lambda./4.7 in optical length and the width of the guide groove being between 0.34R and R, where R represents the beam diameter of a write laser beam on the record film and the power for writing information on each guide groove being differentiated from that for writing information on each land.
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