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:
May. 17, 1988
Filed:
Jul. 17, 1986
Karl Gedl, St. Polten, AT;
Jorg Wolber, Pinneberg, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A circuit arrangement for a color image recording and reproduction instrument(video recorder) or a color television receiver. Such devices have a phase regulation circuit in which an oscillator (18, 59) is controlled in accordance with the phase comparison between the color synchronization signal and a reference signal performed in a phase comparator circuit (9, 40). A control signal from the phase comparator circuit is applied to at least two scanning and locking units (12, 13; 49 to 52) which can be changed over successively and cyclically. These units scan the control signal during the color synchronization blanking time. The output signals of the scanning and locking units (12, 13; 49 to 52) are applied to an adder (16, 54) coupled to the oscillator (18, 59). The interference signals arising from the changeover and superimposed on the control signal are thus eliminated.