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:
Dec. 28, 2010
Filed:
Sep. 13, 2005
Mineo Tsushima, Nara, JP;
Yoshiaki Takagi, Kanagawa, JP;
Kojiro Ono, Osaka, JP;
Naoya Tanaka, Osaka, JP;
Shuji Miyasaka, Osaka, JP;
Mineo Tsushima, Nara, JP;
Yoshiaki Takagi, Kanagawa, JP;
Kojiro Ono, Osaka, JP;
Naoya Tanaka, Osaka, JP;
Shuji Miyasaka, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided are an audio encoding device and an audio decoding device, by which optimal trade-off between code rates and sound quality can be flexibly adjusted. A variable frequency segmentation encoding unit includes: difference degree calculation units for calculating a difference degree between first and second input signals depending on a segmentation method for segmenting a frequency band into sub-bands; a selection unit for selecting one of the segmentation methods; and a difference degree and segmentation information encoding unit for encoding the selected method and the difference degree for each sub-band. A variable frequency segment decoding unit includes: a segmentation information decoding unit for decoding the segmentation information to learn the segmentation method; a switching unit for outputting a difference degree code corresponding to the segmentation method; and difference degree decoding units for decoding the difference degree code to the difference degree for each sub-band.