High-speed search system in a rotary recording medium reproducin

Details High-speed search system in a rotary recording medium reproducin High-speed search system in a rotary recording medium reproducin

1981-09-11

1984-01-24

Faber, Alan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

365234, 360 722, 369111, G11B 2102

Patent

active

044280742

ABSTRACT:
A high-speed search system in a rotary recording medium reproducing apparatus having a reproducing transducer including a reproducing element for reproducing recorded signals from a rotary recording medium in which an information signal and a chapter address signal including a program number of the information signal are recorded, and transferring mechanism for transferring the reproducing transducer along the radial direction of the rotary recording medium, comprises a designating circuit for designating a program number of a desired program which is to be reproduced, a reproducing circuit for reproducing a chapter address signal from a signal reproduced by the reproducing transducer; and a control circuit for comparing the designated program number with a program number of the reproduced chapter address signal and transferring the reproducing transducer at a high speed by the transferring mechanism towards a direction where the two program numbers coincide when the two program numbers differ, and controlling so that the reproducing transducer is transferred towards the direction where the two program numbers coincide according to the difference in the position of the reproducing element and a predetermined position within a program of the designated program number.

REFERENCES:
patent: 4106058 (1978-08-01), Romeas
patent: 4321635 (1982-03-01), Tsuyuguchi
"A Random Access System Adapted for the Optical Videodisc", by Mathieu, SMPTE Journal, Feb. 1977, vol. 86, pp. 80-83.
"A Review of the MCA Disco-Vision System", by Broadbent, Jul. 1974, Journal of the SMPTE, vol. 83, pp. 554-559.

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