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. 19, 2019
Filed:
Sep. 30, 2014
Freescale Semiconductor, Inc., Austin, TX (US);
Michael E. Stanley, Mesa, AZ (US);
NXP USA, Inc., Austin, TX (US);
Abstract
A mechanism is provided to determine orientation of a device that includes sources of electromagnetic interference. Data generated by one or more gyroscopes in the device, in conjunction with data generated by one or more accelerometers, can be used to generate an estimate of the change of orientation of the device from the time of a last accurate magnetometer reading. In one embodiment, in order to conserve system power, the gyroscope is kept powered down or in a stand-by state until receiving a control signal to power up. The control signal is provided in advance of the source of electromagnetic interference being powered up, thereby providing an accurate starting point from which magnetometer orientation estimates may be calculated during such interference.