Method and apparatus for recovering information from a videodisc

Details Method and apparatus for recovering information from a videodisc Method and apparatus for recovering information from a videodisc

1982-04-15

1985-08-20

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

369 32, 369 44, 369 41, G11B 2108

Patent

active

045368635

ABSTRACT:
A system for recovering information from a videodisc and performing special functions which enhance the operational character of the system. To increase the reliability of landing at or near a target track, provisions are made to search for a track adjacent a target track whose track identifier has been obliterated. Further, a method and means for stepping forward or reverse one field at a time is disclosed. Another aspect of the invention concerns a capability to respond to a random command instruction resulting in subsequent functioning of the system in a random manner. Yet a further aspect of the invention is related to controlled jumping of one or more tracks during vertical blanking time to produce unique forward or backward motions; multiples of playing speed, both forward and reverse, and visual special effects can be realized using the multiple track jumping feature. Finally, a method and means are described which permit synchronous transmission of video from a videodisc to an external using device.

REFERENCES:
patent: 4106058 (1978-08-01), Romeas et al.
patent: 4199820 (1980-04-01), Ohtake et al.
patent: 4347527 (1982-08-01), Lainez
patent: 4375091 (1983-02-01), Dakin et al.
Mathieu, "A Random Access System for the Optical Videodisc: Its Impact on Information Retrieval"; SMPTE Journal, Feb. 1977, vol. 86, No. 2, pp. 80-83.

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