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:
Jul. 20, 2010
Filed:
Nov. 01, 2006
Zhicheng Lancelot Wang, Los Altos, CA (US);
Zhicheng Lancelot Wang, Los Altos, CA (US);
Ericsson Television Inc., Duluth, GA (US);
Abstract
A deblocking/deflickering filter decreases artifacts produced in a block-based image compression system, wherein a plurality of transform coefficients are produced respectively indicative of different frequencies in input signal values. The filter includes a first filter portion for deblocking filtering a first low frequency one of the transform coefficients and a second filter portion for deblocking filtering a second low frequency one of the transform coefficients, the first low frequency being different from the second low frequency. The deblocking filter passes through at least a third one of the transform coefficients having a third frequency higher than both of the first and second frequencies without deblocking filtering.