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:
Jun. 30, 2009
Filed:
Jun. 24, 2003
Toshiyuki Nomura, Tokyo, JP;
Osamu Shimada, Tokyo, JP;
Yuichiro Takamizawa, Tokyo, JP;
Masahiro Serizawa, Tokyo, JP;
Naoya Tanaka, Osaka, JP;
Mineo Tsushima, Osaka, JP;
Takeshi Norimatsu, Hyogo, JP;
Kok Seng Chong, Singapore, SG;
Kim Hann Kuah, Singapore, SG;
Sua Hong Neo, Singapore, SG;
Toshiyuki Nomura, Tokyo, JP;
Osamu Shimada, Tokyo, JP;
Yuichiro Takamizawa, Tokyo, JP;
Masahiro Serizawa, Tokyo, JP;
Naoya Tanaka, Osaka, JP;
Mineo Tsushima, Osaka, JP;
Takeshi Norimatsu, Hyogo, JP;
Kok Seng Chong, Singapore, SG;
Kim Hann Kuah, Singapore, SG;
Sua Hong Neo, Singapore, SG;
NEC Corporation, , JP;
Panasonic Corporation, , JP;
Abstract
An energy corrector () for correcting a target energy for high-frequency components and a corrective coefficient calculator () for calculating an energy corrective coefficient from low-frequency subband signals are newly provided. These processors perform a process for correcting a target energy that is required when a band expanding process is performed on a real number only. Thus, a real subband combining filter and a real band expander which require a smaller amount of calculations can be used instead of a complex subband combining filter and a complex band expander, while maintaining a high sound-quality level, and the required amount of calculations and the apparatus scale can be reduced.