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. 06, 2011
Filed:
Feb. 12, 2008
Masanao Suzuki, Kawasaki, JP;
Miyuki Shirakawa, Fukuoka, JP;
Yoshiteru Tsuchinaga, Fukuoka, JP;
Takashi Makiuchi, Fukuoka, JP;
Masanao Suzuki, Kawasaki, JP;
Miyuki Shirakawa, Fukuoka, JP;
Yoshiteru Tsuchinaga, Fukuoka, JP;
Takashi Makiuchi, Fukuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
When creating SBR data in a the low-resolution mode, an encoding device divides a high-frequency component of input audio data being encoded by SBR method into a high-frequency band and a low-frequency band, and calculates an average high-frequency power value that indicates the average value of the power in the high-frequency band of the audio data, as well as an average low-frequency power value that indicates the average value of the power in the low-frequency band of the audio data. The encoding device then compares the average high-frequency power value and the average low-frequency power value, selecting the smaller of the two. The encoding device then corrects the power of the high-frequency component of the signal being encoded by the SBR method so that it equals the selected average power value.