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:
Dec. 07, 2010
Filed:
Jul. 21, 2009
Hideo Ikejiri, Tokyo, JP;
Hideo Ikejiri, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A short-circuit detecting circuit which can accurately detect an output short-circuit of a class-D amplifier by a simple circuit construction. Two comparison pulse signals are formed on the basis of predetermined generating threshold values and a signal level of each of two output stage input pulse signals which are formed on the basis of an input pulse signal to the class-D amplifier and are supplied to an output stage of the class-D amplifier. A signal level of an output pulse from the class-D amplifier in a period of time corresponding to a pulse width of each of the comparison pulse signals is compared with a predetermined detection threshold values. A short-circuit detection signal is outputted in accordance with obtained level comparison results.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile