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:
Jan. 04, 2000
Filed:
Jul. 18, 1997
Applicant:
Inventors:
Fure-Ching Jeng, Sunnyvale, CA (US);
Cheng-Tie Chen, San Jose, CA (US);
Ting-Chung Chen, San Jose, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; H04N / ;
U.S. Cl.
CPC ...
382236 ; 348416 ; 348402 ;
Abstract
A digital signal processor encodes video signals per MPEG standard to achieve multi-stage, low-complexity motion estimation for interframe video coding. A dual-stage motion prediction module processes a compressed bitstream through pixel-averaging, and then applies a Sum-Of-Absolute-Difference (SOAD) function to the bitstream. A minimum motion vector signal is thereby generated over a search range initially for rough determination, then to provide a more refined estimation, the SOAD function is re-applied to the surrounding 16.times.16 blocks, preferably by full and half-pel vertical and horizontal offsets.