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. 10, 2015
Filed:
Feb. 07, 2011
Hiroshi Sugawara, Fukuoka, JP;
Hisayuki Sasaki, Fukuoka, JP;
Shigeki Niwayama, Shizuoka, JP;
Yoshiki Maeda, Shizuoka, JP;
Toshimi Takano, Shizuoka, JP;
Hiroshi Sugawara, Fukuoka, JP;
Hisayuki Sasaki, Fukuoka, JP;
Shigeki Niwayama, Shizuoka, JP;
Yoshiki Maeda, Shizuoka, JP;
Toshimi Takano, Shizuoka, JP;
Panasonic Corporation, Osaka, JP;
Roland Corporation, Shizuoka, JP;
Abstract
A digital amplifier comprises: a switching unit that amplifies a signal input to the digital amplifier by performing a switching operation; a driving unit that turns the switching unit on and off; an input signal detection unit that detects an input signal to the digital amplifier; and a first control unit that performs control such that the switching unit starts a switching operation by starting driving of the driving unit, when the digital amplifier is changed to a signal input state and the input signal detection unit detects an input signal, and performs control such that the switching unit stops the switching operation by stopping the driving of the driving unit, when the digital amplifier is changed to a no signal input state and the input signal detection unit does not detect an input signal. This configuration enables to reduce power consumption when no signal is input.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile