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:
Feb. 23, 2010
Filed:
Jan. 25, 2007
Todd F. Miller, Scottsdale, AZ (US);
Marco Fuhrmann, Mesa, AZ (US);
Keith L. Kraver, Gilbert, AZ (US);
Todd F. Miller, Scottsdale, AZ (US);
Marco Fuhrmann, Mesa, AZ (US);
Keith L. Kraver, Gilbert, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An apparatus () and method () for sensing acceleration are provided. The method includes producing () a first signal in response to an acceleration sensed by a transducer, producing () a second signal based on the first signal, and actuating () the transducer in response to the second signal to remove offset in the transducer. The first signal represents the acceleration, and the second signal represents a low frequency component associated with an offset in the transducer. The apparatus () includes a transducer () producing a capacitance in response to the acceleration, a sensing system () producing a first signal from the capacitance representing the acceleration, and a compensation system () coupled between the sensing system and transducer. The compensation system produces a second signal based on the first signal for substantially removing an offset of the transducer.