Patent · US Active

Differential encoding using a 3D graphics processor

US8421821B2 · kind B2 · utility

2Cited by

9References

14Claims

0Family size

Assignee

ARM Norway AS · NO

Inventors

Jorn Nystad · Trondheim, NO
Edvard Sorgard · Trondheim, NO
Borgar Ljosland · Trondheim, NO
Mario Blazevic · Lena, NO

Key dates

Filing date	Dec 22, 2011
Grant date	Apr 16, 2013
Priority date	—
Expiry date	Dec 22, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/43
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A 3D graphics rendering pipeline is used to carry out data comparisons for motion estimation in video data encoding. Video data for the pixel block of the video frame currently being encoded is loaded into the output buffers of the rendering pipeline. The video data for the comparison pixel blocks from the reference video frame is stored as texture map values in the texture cache of the rendering pipeline. Once the sets of pixel data for comparison have been stored, the rendering pipeline is controlled to render a primitive having fragment positions and texture coordinates corresponding to the data values that it is desired to compare. As each fragment is rendered, the stored and rendered fragment data is compared by fragment compare unit and the determined differences in the data values are accumulated in an error term register.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.