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. 16, 2005
Filed:
May. 21, 2002
Tomoharu Wakabayashi, Tokyo, JP;
Masaharu Ohya, Tokyo, JP;
Kazuyoshi Kobayashi, Tokyo, JP;
Hiroaki Takinami, Tokyo, JP;
Nobuhiko Takeda, Tokyo, JP;
Tomoharu Wakabayashi, Tokyo, JP;
Masaharu Ohya, Tokyo, JP;
Kazuyoshi Kobayashi, Tokyo, JP;
Hiroaki Takinami, Tokyo, JP;
Nobuhiko Takeda, Tokyo, JP;
Rion Co., Ltd., Tokyo, JP;
Abstract
An apparatus that automatically adjusts self-noise and can lower the lower limit value of a measurement range by reducing the effects of self-noise on measured values. This apparatus corrects self-noise when amplifying an output signal from a sensor so as to conform to a sensor sensitivity G, further processing the amplified signal, and then outputting the processed signal as a measured value. This apparatus includes a sensor sensitivity adjusting circuit that adjusts an amplification factor so as to conform to the sensor sensitivity G, a self-noise value calculating circuitthat calculates a self-noise component F·N from the amplification factor adjusted by the sensor sensitivity adjusting circuit so as to conform to the sensor sensitivity G, and a measured value correcting circuit that calculates a true measured value F·S from the self-noise component F·N calculated by the self-noise value calculating circuitas well as a measured value L containing the self-noise component F·N.