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:
Nov. 10, 2015
Filed:
Nov. 07, 2011
Gisle Bjøntegaard, Oppegard, NO;
Arild Fuldseth, Lysaker, NO;
Gisle Bjøntegaard, Oppegard, NO;
Arild Fuldseth, Lysaker, NO;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A video decoding method, system and computer program product perform inverse transforming of transform coefficients for a video image. The inverse transforming is performed with a processing circuit on a first block of transform coefficients by a transform matrix having a plurality of vectors. The coefficients are transformed into a corresponding second block of residual pixel values for the video image. The transform matrix consists of integer elements, and includes a 4 point transform as whole or partial vectors of the transform matrix. The first row of the 4 point transform includes elements a a a a. The second row includes b c −c −b. The third row includes a −a −a a. The fourth row includes c −b b −c, wherein a, b and c comply with |b+c−(a+a)|/(a+a)<0.003, b/c being in an inclusive range of 2.1 through 2.4, and each of a, b and c being integer.