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:
Nov. 04, 2008
Filed:
Dec. 21, 2006
Yasuhiro Tomita, Osaka, JP;
Manabu Komiya, Kyoto, JP;
Hitoshi Suwa, Osaka, JP;
Toshiki Mori, Osaka, JP;
Yasuhiro Tomita, Osaka, JP;
Manabu Komiya, Kyoto, JP;
Hitoshi Suwa, Osaka, JP;
Toshiki Mori, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor leakage current detector of the present invention includes a first analog switch which causes a current to be measured to flow or to be cut off, a second analog switch which causes a reference current to flow or to be cut off, an integral capacitance element which is connected by the first analog switch and the second analog switch and is charged with the current to be measured or the reference current, a discharge unit which discharges the integral capacitor, and a comparison unit which compares the reference voltage with each of an integral voltage generated in the integral capacitor by a reference current after the discharge of the integral capacitor and an integral voltage generated in the integral capacitance element by the current to be measured after the discharge of the integral capacitor.