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:
Oct. 24, 1978
Filed:
Jan. 28, 1977
Luigi C Gallo, Redwood City, CA (US);
Daniel A Beaulier, Menlo Park, CA (US);
Ampex Corporation, Redwood City, CA (US);
Abstract
Apparatus is disclosed for providing a square wave output signal for use in alternating the phase of a sampling clock signal on successive video lines of a video signal having a horizontal blanking interval at the beginning of each video line and a burst of cycles of chrominance subcarrier in each of said horizontal blanking intervals. The square wave output signal changes between first and second levels during alternate video lines, but the signal is always maintained at one of said levels during the occurrence of the bursts of cycles. The square wave signal controls the sampling clock signal generator so that the clock signal is of a first phase while the square wave signal is at the first level and of an opposite phase while the square wave signal is at the second level.