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. 11, 2000
Filed:
Dec. 11, 1998
Sung-Ryul Cho, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
A method and apparatus, for arithmetically encoding input data, initialize a codeword table with K codewords, K being an integer greater than 1 and a probability value being assigned to each codeword. First to Mth symbols are extracted from the input data and M codewords are generated based thereon, with M being an integer representing a maximum length of codewords to be registered. First L symbols of the extracted M symbols are allocated with a probability of a longest registered codeword, wherein the longest registered codeword is the same as the first L symbols and L is an integer greater than 1. Then, the generated codewords except for the registered codewords are registered at the codeword table and probability values are reassigned to the registered codewords. After registering a predetermined number of codewords, the remaining symbols are sequentially allocated with the probability values of the corresponding registered codewords. A decoding method and apparatus perform the above steps reversely in order to decode the encoded data.