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:
Jan. 17, 2006
Filed:
Dec. 27, 2001
Dae-sik Kim, Daejeon, KR;
Song-in Choi, Daejeon, KR;
Byung-sik Yoon, Daejeon, KR;
Hyung-jung Kim, Daejeon, KR;
Sang-won Kang, Anyang, KR;
Sang-hyun Chi, Kangwon-do, KR;
Dae-Sik Kim, Daejeon, KR;
Song-In Choi, Daejeon, KR;
Byung-Sik Yoon, Daejeon, KR;
Hyung-Jung Kim, Daejeon, KR;
Sang-Won Kang, Anyang, KR;
Sang-Hyun Chi, Kangwon-do, KR;
Abstract
The LSF quantizer for a wideband speech coder comprises a subtracter for receiving an input LSF coefficient vector and removing a DC component from it; a memory-based vector quantizer and a memoryless vector quantizer for respectively receiving the DC-component-removed LSF coefficient vector and independently quantizing the same; a switch for receiving quantized vectors respectively quantized by the memory-based vector quantizer and the memoryless vector quantizer, selecting a quantized vector that has less quantized error that is a difference between the received quantized vector and the input LSF coefficent vector from among the received quantized vectors, and outputting the same; and an adder for adding the quantized vector selected by the switch to the DC component of the LSF coefficient vector.