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. 25, 2009
Filed:
Apr. 08, 2008
Applicants:
Kazuhiro Shimomura, Osaka, JP;
Makoto Yamamoto, Osaka, JP;
Inventors:
Kazuhiro Shimomura, Osaka, JP;
Makoto Yamamoto, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An NchMOS transistor () is provided for muting of an output terminal () to which positive and negative output signals are outputted, and a mute switch circuit () is provided for controlling on/off of the transistor () by switching a voltage applied to the gate of the transistor (). When muting is turned off, the back gate of the transistor () is biased by resistance division between resistors (Rand R) connected in series between the output terminal () and a predetermined negative potential (VSS).