Optical data reproducing devices having improved trick play capa

Details Optical data reproducing devices having improved trick play capa Optical data reproducing devices having improved trick play capa

1985-01-31

1988-01-19

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369109, 369111, G11B 700

Patent

active

047208252

ABSTRACT:
An optical data reproducing device including an illuminating system for respectively, simultaneously illuminating at least two separate tracks of an optical disk with at least two light beams; a photo-electric conversion device for respectively converting the at least two light beams reflected from the tracks into at least two electrical signals; and processing circuitry for processing the at least two electrical signals. The processing circuitry may include a switch for switching from one track to another to execute a trick jump play. This circuitry may also simultaneously read the track outputs. One or more diffraction gratings which may be perpendicularly oriented with respect to each other establish the beams projected on the tracks.

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