Capacitive sensor

Details Capacitive sensor Capacitive sensor

2007-03-22

2009-06-30

Dole, Timothy J (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C073S514320

Reexamination Certificate

active

07554340

ABSTRACT:
A capacitive sensor includes an error compensating unit that, in an arrangement that a part of a fixed electrode as an edge portion and a part of a movable electrode as an edge portion are opposed to each other keeping a gap in a direction of shift of a detecting unit, reduces a detection error of capacitance due to the shift of comb-tooth portions from each other in the detecting unit, by a change of capacitance according to variation of the gap caused by the shift.

REFERENCES:
patent: 6755081 (2004-06-01), Furukubo et al.
patent: 6848320 (2005-02-01), Miyajima et al.
patent: 6990864 (2006-01-01), Sakai
patent: 7107847 (2006-09-01), Yoshida et al.
patent: 2003/0101817 (2003-05-01), Sakai
patent: 2005/0132805 (2005-06-01), Park et al.
patent: 2006/0032310 (2006-02-01), Merassi et al.
patent: 1626283 (2006-02-01), None
patent: 2005-83972 (2005-03-01), None
patent: 2003-0045620 (2003-06-01), None
U.S. Appl. No. 10/599,396 to Meshii et al., filed Sep. 27, 2006.
U.S. Appl. No. 11/579,178 to Fukuda et al., filed Oct. 30, 2006.
English Language Abstract of JP 2005-83972.
English language Abstract of KR 2003-0045620, Jun. 11, 2003.

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