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. 08, 2002
Filed:
Mar. 26, 1999
Luciano Zoso, Chandler, AZ (US);
Nicholas J. M. Spence, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A digital video encoder ( ) receives a reference clock signal (REF_CLK ) for determining both a short term and a long term phase correction factor. A pulse detector ( ) determines a number of sample clock (CLK ) time periods between the reference clock signal (REF_CLK ) and a clock signal (CLK ) that is derived from the data received by the digital video encoder ( ). A phase increment generator ( ) supplies an accumulator circuit ( ) with a long term phase increment value based on the number of sample clocks and a TV_standard signal. A counter ( ) and a phase look-up table ( ) supply a short term increment value. The combined short term and long term increment values provide phase and frequency accuracy for the video subcarrier signal.