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:
Sep. 07, 1993
Filed:
Aug. 09, 1991
Akira Goukura, Yokohama, JP;
Hideotoshi Ozaki, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A sampling clock signal, which determines sampling time points in an A/D converter used to convert a color video signal to digital form, is locked to a specific predetermined phase of the color burst signal of the video signal, by a negative feedback loop formed of a circuit for deriving successive color burst phase values from the digital color signal values, a gate circuit and a subtractor for obtaining the difference between color burst phase and a reference phase value, for one specific A/D conversion sampling time point in each horizontal scanning interval, and circuits for producing the sampling clock signal and controlling the phase of that signal in accordance with the phase difference values.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile