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:
Apr. 18, 2000
Filed:
Aug. 04, 1997
Paul J Weihs, Sunnyvale, CA (US);
Innovision Labs, Cupertino, CA (US);
Abstract
A method and system for separating chrominance and luminance information from a composite spectral signal is disclosed. The method and system comprises demodulating the composite signal prior to separation of the chrominance or luminance information to provide a first U subcomponent and a first V subcomponent and then processing and filtering the first U subcomponent and the first V subcomponent to provide a second U subcomponent and a second V subcomponent, respectively. The method and system also includes combining the second U subcomponent and the second V subcomponent to provide the remodulated chrominance information. In so doing chrominance information is provided in which artifacts are substantially attenuated. Accordingly, by 'bypassing' the encoded space to provide 'clean U and V' signals directly from the composite signal, the chrominance information or component has no inherent phase (hue) sensitivity to its simultaneously demodulated U and V subcomponents as it does when utilizing conventional comb filtering techniques. Therefore, artifacts in the subcomponents is attenuated. Hence, the artifacts within the remodulated chrominance and extracted luminance information are also substantially attenuated.