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. 30, 2004
Filed:
Jul. 07, 2000
Dong Sik Kim, Sungnam-Si, KR;
Ness B. Shroff, Lafayette, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
A technique to encode a group of vectors by quantizing the group with each of a number of different codes ( ) and selecting the quantization results which are most favorable. This technique may include providing several vectors to an encoder ( ) of a communication system ( ) and quantizing each of the vectors with a number of different codebooks ( ) to generate a corresponding number of codeword sets with the encoder ( ). The codeword sets are each representative of the vectors. Each of the codeword sets is evaluated by determining a corresponding distortion value. The codeword set with the lowest distortion is selected to encode the vectors based on this evaluation. The codebook ( ) or sequence of codebooks ( ) used to generate the selected codeword set may differ from one vector sample to the next to provide a sample adaptive coding scheme. Transmission of the encoded data to a decoder ( ) of communication system ( ) may also be performed where the original vectors are reconstructed.