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:
Jan. 28, 1986
Filed:
Feb. 10, 1984
Leendert J van de Polder, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A television circuit arrangement for determining in a video signal (VS), frame periods comprising two field periods when a picture signal repeated in cycles of two successive field periods and with a possible change of picture content therebetween is present. Signal sources, such as, for example, cine-film television converters and 'field skip' signal storage- and display devices, supply such a signal. It may be required for signal processing operations improving the picture quality during display, to use the cycles as frame periods. For this purpose, the circuit arrangement is provided with a switching circuit (S1-S6), a first (C1,S1,S4) and a second signal integration circuit (C2,S2,S5) which can be reset and are alternately operative every other field period, and a succeeding signal comparison circuit (AMP,S6) for supplying a voltage (VV) determining the frame period.