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:
Sep. 19, 2000
Filed:
May. 11, 1998
Applicant:
Inventor:
John Redford, Cambridge, MA (US);
Assignee:
Oak Technology, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341 67 ; 341 65 ;
Abstract
A method and apparatus for decoding JPEG Huffman symbols is described. A content addressable memory module stores bit patterns representing Huffman symbols that must be decoded in a single decoding cycle. A compare-add module stores bit patterns representing Huffman symbols that can be decoded in following cycles. The content addressable memory module and the compare-add module each compare a Huffman symbol with their stored bit patterns and generate a corresponding bit pattern when a match is found. The method takes advantage of the high speed possible with a content addressable memory and the small size of the compare-add module.