Method of time limited searching for a track address on an optic

Details Method of time limited searching for a track address on an optic Method of time limited searching for a track address on an optic

1987-11-27

1989-07-04

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 41, 369 43, 369 54, 358342, 360 7804, G11B 1722

Patent

active

048456977

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: 4199820 (1980-04-01), Ohtake et al.
patent: 4375091 (1983-02-01), Dakin et al.
patent: 4536863 (1985-08-01), Giddings
patent: 4701898 (1987-10-01), Giddings

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