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:
Nov. 26, 2007
Filed:
Apr. 14, 2004
Joan L. Mitchell, Longmont, CO (US);
Albert N. Cazes, Mount Kisco, NY (US);
Neil M. Leeder, Apex, NC (US);
Joan L. Mitchell, Longmont, CO (US);
Albert N. Cazes, Mount Kisco, NY (US);
Neil M. Leeder, Apex, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Huffman encoding, particularly from a packed data format, is simplified by using two different table formats depending on code length. Huffman tables are also reduced in size thereby. Decoding is performed in reduced time by testing for the length of valid Huffman codes in a compressed data stream and using an offset corresponding to a test criterion yielding a particular test result to provide a direct index into Huffman table symbol values while greatly reducing the size of look-up tables used for such a purpose.