Optical recording and/or reproducing device

Details Optical recording and/or reproducing device Optical recording and/or reproducing device

1980-12-15

1983-12-13

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

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

Mechanism control by the control signal

358342, 369 32, 369 33, 369 41, G11B 2102, G11B 712

Patent

active

044208286

ABSTRACT:
An optical reproducing device for reproducing still image signals recorded on circular tracks and moving image or audio signals recorded on spiral tracks on a disk. Concentric and spiral tracks may be intermingled on the same disk. The address signals for each concentric track or each coil of a spiral track are previously recorded. When the address signals are reproduced, they are processed so as to detect whether the readout address signals changes with time, thereby detecting whether the accessed track is concentric or spiral. An optical head drive system is controlled in a manner depending on whether the track is circular or spiral, so that an optical head can scan the desired concentric or spiral track.

REFERENCES:
patent: 3931457 (1976-01-01), Mes
patent: 4310914 (1982-01-01), Riddle
patent: 4313134 (1982-01-01), Rustman et al.
Bennion et al., Interactive Video Disc Systems for Education, J of the SMPTE, vol. 84, No. 12, 12/75, 949-953.

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