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:
Mar. 24, 2015
Filed:
Dec. 17, 2009
Teruki Kikkawa, Yokohama, JP;
Yasuhiro Matsuura, Yokohama, JP;
Teruki Kikkawa, Yokohama, JP;
Yasuhiro Matsuura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A channel conversion part () performs channel conversion on audio data of a plurality of channels so that the number of channels thereof is converted to an appropriate number of channels for which an acoustic effect can be verified or perceived by audience according to the volume level of reproduced sound, and audio is output only with a required number of channels. In addition, a frequency control part () for controlling the operating frequencies of switching regulators (-) of audio amplifiers (-) also performs frequency control according to the volume level of sound of each channel which performs an audio output.