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:
Sep. 09, 2014
Filed:
Jul. 11, 2012
Miyuki Shirakawa, Fukuoka, JP;
Yohei Kishi, Kawasaki, JP;
Masanao Suzuki, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An audio encoding device includes a time-frequency converting unit that conducts time-frequency conversion of channel signals included in an audio signal having a plurality of channels in frame units having a certain length of time to convert the channel signals to respective frequency signals; a downmixing unit that generates a main signal representing a major component of a first channel and a second channel among the plurality of channels, and a residual signal that is a component orthogonal to the main signal; a weight determining unit that obtains a decoding value predicted and a decoding value predicted, obtains signal components affecting each other between the first channel and the second channel; a weighting unit that uses the weighting coefficient; a residual signal encoding unit that encodes the weighted residual signal the weighting coefficient; and a main signal encoding unit that encodes the main signal.