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:
May. 06, 2008
Filed:
Dec. 22, 2005
Applicant:
Steven A. Foote, Issaquah, WA (US);
Inventor:
Steven A. Foote, Issaquah, WA (US);
Assignee:
Honeywell International Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); H03K 5/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method for operation of a differential capacitance transducer, including generating substantially opposing polarity excitation drive signals by operation of a pair of drive signal generators, applying the excitation drive signals to a pair of sense capacitors of a differential capacitance sensor, sensing a differential capacitance at a common junction between the pair of sense capacitors; and individually controlling the drive signal generators for trimming a null bias of the sense capacitor pair at the common junction.