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:
Aug. 21, 2012
Filed:
Apr. 07, 2006
Dongsheng Wu, Hainesport, NJ (US);
Robert B. Prozorov, Holland, PA (US);
Huijuan Liu, Bridgewater, NJ (US);
Christopher D. Jurado, Blue Bell, PA (US);
Daniel Zhu, Churchville, PA (US);
Binning Chen, Newtown, PA (US);
Dongsheng Wu, Hainesport, NJ (US);
Robert B. Prozorov, Holland, PA (US);
Huijuan Liu, Bridgewater, NJ (US);
Christopher D. Jurado, Blue Bell, PA (US);
Daniel Zhu, Churchville, PA (US);
Binning Chen, Newtown, PA (US);
ATI Technologies, Inc., Markham, CA;
Abstract
The invention provides techniques for separating luma and chroma signal components in a composite SECAM video signal. During reception, the SECAM video signal is split into luma and chroma output. The amplitude of the chroma carrier is monitored during reception. If the chroma carrier amplitude is greater than a threshold, the value of the chroma output can be reduced. Also, if the chroma carrier amplitude is greater than another threshold, a portion of the chroma carrier can be added to the luma; or the trap band of the band-trap filter for extracting luma from the composite video can be reduced. The respective amount of the reduction in the chroma output and the increase in the luma output are independently determined but both may proportional to the magnitude of the deviation in the chroma carrier amplitude from the different thresholds.