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. 11, 2007
Filed:
Jan. 20, 2004
John Joseph Ciardi, Portland, OR (US);
John Joseph Ciardi, Portland, OR (US);
Thomson Licensing LLC, Boulonge-Billancourt, FR;
Abstract
A sync generator (genlock) () for frequency and phase locking an incoming video signal to a system clock () includes a digitizer () for digitizing the incoming video signal to yield a digitized color sub-carrier burst component. A numerically controlled oscillator () clocked by the system clock generates a phase lock reference signal for locking to the incoming video signal. Phase detection means logic unit () sense a static phase offset magnitude from an ideal 90° phase offset between the digitized color sub-carrier burst component and the numerically controlled oscillator output signal. In accordance with the sensed static offset, a static phase error nulling circuit () generates a compensating offset in accordance for input to the system clock () to drive the static offset to zero, thus achieving frequency and phase locking. A color frame logic unit () determines the color frame sequence for the purpose of resetting the NCO and generating a color frame pulse marking the start of the period sequence.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile