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. 03, 1999
Filed:
Apr. 24, 1996
Ching-Fang Chang, San Jose, CA (US);
Chuen-Chien Lee, Fremont, CA (US);
Sony Corporation, Tokyo, JP;
Sony Electronics, Inc., Park Ridge, NJ (US);
Abstract
An apparatus and method for post processing image data which previously was encoded using a discrete cosine transform in order to remove resulting blocking effects. Correction coefficients are generated by determining the least mean square error of the blocking error. The correction coefficients are adjusted to be within the quantization range of the quantization step size used during the coding process. The adjusted correction coefficients are then used to generate the correction terms which are subsequently combined with the original image data to generate an image exhibiting reduced blocking effects when the image is displayed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile