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:
Apr. 18, 2000
Filed:
May. 12, 1998
Applicant:
Inventor:
John Redford, Cambridge, MA (US);
Assignee:
Oak Technology, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
708402 ;
Abstract
A method and apparatus for performing matrix multiplication used in image processing is described. A modified Booth encoding method is used to reduce the logic circuitry in processor modules used for calculating forward and inverse discrete cosine transforms. A set of products of image values and matrix coefficients are generated and provided to a set of multiplexers. The multiplexers provide preselected products to a set of accumulators. The accumulators combine the products to generate the set of transform coefficients at the accumulator outputs.