Reproducing apparatus for an optical recording medium

Details Reproducing apparatus for an optical recording medium Reproducing apparatus for an optical recording medium

1989-03-29

1991-04-16

Levy, Stuart S.

Registers

Coded record sensors

Particular sensor structure

235470, 235456, 369 4411, 382 68, G06K 710, G07B 712

Patent

active

050085212

ABSTRACT:
A reproducing apparatus reproduces an information signal from a card type optical recording medium from which an information signal can be optically read out and on which an information signal is discretely recorded as a plurality of blocks each consisting of a plurality of track trains. The apparatus comprises a detector formed with a plurality of detecting elements arranged two-dimensionally. A light beam from a reproducing light source irradiates the entire area of the block as a recording unit. The detector detects light reflected from the optical card, and a extractor extracts a detection output of one of the track trains in the block on the basis of a detection output from the detector.

REFERENCES:
patent: 3900716 (1975-08-01), Kawabata et al.
patent: 4402088 (1983-08-01), McWaters et al.
patent: 4818856 (1989-04-01), Matsushima et al.
patent: 4931628 (1990-06-01), Wada

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