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. 28, 1997
Filed:
Aug. 09, 1993
Stephen C Purcell, Mountain View, CA (US);
Didier J Le Gall, Los Altos, CA (US);
Subroto Bose, Santa Clara, CA (US);
C-Cube Microsystems, Milpitas, US;
Abstract
A structure and a format provide a video signal encoder under the MPEG (Motion Picture Experts Group) standard. In one embodiment, the video signal interface is provided with a decimator for providing input filtering for the incoming signals. In one embodiment, the central processing unit (CPU) and multiple coprocessors implements discrete cosine transform (DCT) and inverse discrete cosine transform (IDCT) and other signal processing functions, generating variable length codes, and provides motion estimation and memory management. The instruction set of the central processing unit provides numerous features in support for such features as alpha filtering, eliminating redundancies in video signals derived from motion pictures and scene analysis. In one embodiment, a matcher evaluates 16 absolute differences to evaluate a 'patch' of eight motion vectors at a time.