Method of detecting the position of an optical head

Details Method of detecting the position of an optical head Method of detecting the position of an optical head

G - Physics

11

B

352/53.7

G11B 7/085 (2006.01) G06K 7/015 (2006.01) G11B 17/34 (2006.01) G11B 19/14 (2006.01)

Patent

CA 1270059

ABSTRACT OF THE DISCLOSURE In the method according to the present invenion, before data are recorded on an optical card or the data recorded on the card are reproduced, an optical head for applying a light beam to the optical card and the optical card are displaced relative to each other in the direction of track of the optical card and a track number written on the optical card is read to thereby detect the position of the optical head relative to the optical card.

505632

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