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:
Jun. 12, 2001
Filed:
Oct. 27, 1997
Michael Bakhmutsky, Spring Valley, NY (US);
Philips Electronics North America Corporation, New York, NY (US);
Abstract
A controller for controlling the operation of a variable length decoder, which includes a coding protocol determination circuit for determining a coding protocol used in coding a digital data stream currently being decoded by the variable length decoder, and a configuration control circuit for automatically reconfiguring the variable length decoder into a selected one of a plurality of different possible decoding configurations, depending upon the determined coding protocol. Also disclosed is a controller for controlling the operation of a variable length decoder, which includes a code type determination circuit which determines a code type of a current code word currently being decoded by the variable length decoder, and a mode switching circuit which switches a mode of operation of the controller between a parallel decoding mode of operation and a tree-searching mode of operation, depending upon the determined code type of the current code word. Also disclosed is a code word value memory which can be used by a variable length decoder for decoding the values of the code words in the input digital data stream. The code word value memory is logically organized into a plurality of individually addressable pages, at least one of which is addressed by a first code prefix and includes individual code word values addressed by the first code prefix plus a sub-tree associated with at least one other code prefix, to thereby maximize memory utilization and minimize the required memory size.