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:
Jan. 23, 2007
Filed:
Jan. 13, 2006
Applicants:
Shiah Siew Wong, Singapore, SG;
Yasuo Higuchi, Singapore, SG;
Inventors:
Shiah Siew Wong, Singapore, SG;
Yasuo Higuchi, Singapore, SG;
Assignees:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Panasonic Semiconductor Asia Pte Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 1/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage level detector () which activates itself by monitoring the voltage level (V) at a standby pin () during power-up of an audio power amplifier (), and can detect fault conditions of an output block (), such as a short to ground at an output terminal (), in contrast to conventional protection circuits that can operate only after power-up.