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:
Dec. 31, 2002
Filed:
Mar. 23, 2001
Masaki Toyokura, Hyogo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A variable-length code decoder sequentially decodes a series of variable-length codewords included in a bit stream and outputs decoded symbols corresponding to the codewords. The decoder includes an interface section and a decoding section. The interface section accumulates various code lengths of the decoded codewords to obtain a sum. Next, the interface section selects an N-bit contiguous data sequence (where N is a maximum code length of the codewords) from a 2N- or (2N−1)-bit contiguous data sequence, included in the bit stream, in accordance with the sum and outputs the N-bit contiguous data sequence. The decoding section receives the output of the interface section and decodes a codeword included in a combination of the output and a previous output of the interface section by reference to a lookup table, thereby obtaining and outputting a decoded symbol and outputting a code length of the decoded codeword to the interface section.