The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1983
Filed:
Oct. 02, 1981
Hirotaka Kurata, Tokyo, JP;
Trio Kabushiki Kaisha, Tokyo, JP;
Abstract
As many as four kinds of high-speed playback of a videodisc can be selected with only two operating switches. This is accomplished by extracting the vertical synchronizing signal from the composite video signal read from the videodisc and, based on this vertical synchronizing signal, producing more than one pulse delayed by a prescribed time. The vertical synchronizing signal and/or the delayed pulses are gated by independently outputted forward or reverse indicator signals for high-speed playback. High-speed playback is executed by forcibly driving the target tracking unit one track at a time in the direction designated by the indicator signal more than twice during the substantial vertical blanking time of the television image corresponding to the gated vertical synchronizing signal and/or the delayed pulses. When the forward and reverse indicator signals are both generated, an even higher speed playback is obtained.