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:
Mar. 08, 2011
Filed:
Sep. 28, 2005
Michiyo Goto, Tokyo, JP;
Koji Yoshida, Kanagawa, JP;
Hiroyuki Ehara, Kanagawa, JP;
Masahiro Oshikiri, Kanagawa, JP;
Michiyo Goto, Tokyo, JP;
Koji Yoshida, Kanagawa, JP;
Hiroyuki Ehara, Kanagawa, JP;
Masahiro Oshikiri, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A scalable encoding device for realizing scalable encoding by CELP encoding of a stereo sound signal and improving the encoding efficiency. In this device, an adder and a multiplier obtain an average of a first channel signal CHand a second channel signal CHas a monaural signal M. A CELP encoder for a monaural signal subjects the monaural signal M to CELP encoding, outputs the obtained encoded parameter to outside, and outputs a synthesized monaural signal M' synthesized by using the encoded parameter to a first channel signal encoder. By using the synthesized monaural signal M′ and the second channel signal CH, the first channel signal encoder subjects the first channel signal CHto CELP encoding to minimize the sum of the encoding distortion of the first channel signal CHand the encoding distortion of the second channel signal CH