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:
Mar. 06, 2012
Filed:
Mar. 05, 2011
Wen-hsiung Chen, Sunnyvale, CA (US);
Fang Wu, Pleasanton, CA (US);
John A. Toebes, Cary, NC (US);
Dov Rosenfeld, Oakland, CA (US);
Gregory D. Pelton, Raleigh, NC (US);
Wen-hsiung Chen, Sunnyvale, CA (US);
Fang Wu, Pleasanton, CA (US);
John A. Toebes, Cary, NC (US);
Dov Rosenfeld, Oakland, CA (US);
Gregory D. Pelton, Raleigh, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Coding quantized transform coefficients as occur in image compression combines a position identifying method to identify the relative position of clusters of consecutive non-zero-valued coefficients, an amplitude event identifying method to identify amplitude events in the clusters of non-zero-valued coefficients, and a coding method to code the position events, amplitude events, and signs of the amplitudes in the clusters. The method is particularly applicable to a series of quantized transform coefficients where clusters are likely-to-occur.