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. 28, 2006
Filed:
Sep. 17, 2004
Hajime Kashiwase, Tokyo, JP;
Hiromichi Watanabe, Tokyo, JP;
Hiroshi Yokoyama, Saitama, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Positive charges of a sensor element are stored in a capacitor for converting a voltage, are converted into a positive voltage by an amplifier, and then are outputted. When the polarity of the charges of the sensor element are inverted to be negative, the charges inversely flow from the capacitor for converting the voltage and feed back to an equivalent capacitor of the sensor element. The output of the amplifier reduces and returns to a zero-point. An automatic correcting circuit makes an FET conductive and the charges are discharged in order to prevent the fluctuation of the zero-point level due to the negative drift.