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:
Mar. 04, 2003
Filed:
Feb. 21, 2001
Shigeru Nonoyama, Aichi-ken, JP;
Hiroaki Itou, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
A capacity(ies) of a variable capacitor(s) varies with a physical amount. A C-V conversion circuit converts variation in the capacity into a voltage signal. First and second charge holding circuits hold the voltage signal at different timings as first and second charges, respectively. An offset compensating charge holding circuit generates and holds an offset charge for compensation of an offset in the voltage signal. A charge combining and holding circuit combines and holds the first and second charges and the offset charge. An outputting circuit receives the combined charge from the charge combining and holding circuit and outputs an output voltage signal corresponding to the physical amount in accordance with the received charge. The outputting circuit, the offset compensating charge holding circuit, the C=V circuit may be omitted. The variable capacitance may include a capacitor or a differential type capacitors.