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:
Feb. 12, 2013
Filed:
Oct. 31, 2008
Haishan Zhong, Singapore, SG;
Zongxian Liu, Singapore, SG;
Kok Seng Chong, Singapore, SG;
Koji Yoshida, Kanagawa, JP;
Haishan Zhong, Singapore, SG;
Zongxian Liu, Singapore, SG;
Kok Seng Chong, Singapore, SG;
Koji Yoshida, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An encoder improves inter-channel prediction (ICP) performance in scalable stereo sound encoding using an ICP. In the encoder, ICP analysis units use, as reference signal candidates, a frequency coefficient in the low-band portion of a side residual signal, a frequency coefficient in each sub-band portion of a monaural residual signal, and a frequency coefficient in the low-band portion of the monaural residual signal, respectively, and perform an ICP analysis between the these respective candidates and a frequency coefficient in each sub-band portion of the side residual signal to generate first, second, and third ICP coefficients. A selection unit selects an optimum reference signal from among the reference signal candidates by checking the relationship between the respective reference signal candidates and the frequency coefficient in each sub-band portion of the side residual signal and outputs, to an ICP parameter quantization unit, a reference signal ID indicating the selected reference signal and an ICP coefficient corresponding to the reference signal.