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. 10, 2009
Filed:
Oct. 11, 2006
Akihiro Ueda, Chandler, AZ (US);
Andrew C. Mcneil, Chandler, AZ (US);
Akihiro Ueda, Chandler, AZ (US);
Andrew C. McNeil, Chandler, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A transducer () includes a movable element (), a self-test actuator (), and a sensing element (). The sensing element () detects movement of the movable element () from a first position () to a second position () along an axis perpendicular to a plane of the sensing element (). The second position () results in an output signal () that simulates a free fall condition. A method () for testing a protection feature of a device () having the transducer () entails moving the movable element () to the first position () to produce a negative gravitational force detectable at the sensing element (), applying a signal () to the actuator () to move the movable element () to the second position () by the electrostatic force () , and ascertaining an enablement of the protection feature in response to the simulated free fall.