Optical information recording-reproducing apparatus including a light beam detector being divided by a division line extending in a direction perpendicular to an information track
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 23, 1997
Grant Date -
N/A
app pub date -
Nov 18, 1996
filing date -
Sep 10, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A minute light spot is irradiated on an information track on a recording surface of a recording medium from an optical head. When reproducing an information mark train recorded on the recording surface by the mark position recording method, light reflected by or transmitted through the recording medium is guided to a divided photosensor having a division line extending in a direction perpendicular to the track. A plurality of outputs from the divided photosensor is arithmetically processed to thereby detect the central position of the information mark.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully