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:
Aug. 18, 2015
Filed:
Nov. 16, 2011
Miyuki Shirakawa, Fukuoka, JP;
Yohei Kishi, Kawasaki, JP;
Masanao Suzuki, Kawasaki, JP;
Yoshiteru Tsuchinaga, Fukuoka, JP;
Miyuki Shirakawa, Fukuoka, JP;
Yohei Kishi, Kawasaki, JP;
Masanao Suzuki, Kawasaki, JP;
Yoshiteru Tsuchinaga, Fukuoka, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An audio coding device includes a time-to-frequency converter that performs time-to-frequency conversion on each frame of a signal in at least one channel included in an audio signal in a predetermined length of time in order to convert the signal in the at least one channel to a frequency signal; a complexity calculator that calculates complexity of the frequency signal for each of the at least one channel. The audio further includes a bit allocation controller that determines a number of bits to be allocated to each of at least one channel so that more bits are allocated to the each of the at least one channel as the complexity of the each of at least one channel increases, and increases the number of bits to be allocated as an estimation error in the number; and a coder that codes the frequency signal.