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:
Apr. 09, 2019
Filed:
Sep. 12, 2017
Greatcall, Inc., San Diego, CA (US);
Matthew Luscher, San Diego, CA (US);
Joel Stair, San Diego, CA (US);
Jasen Cotton, San Diego, CA (US);
Gavin Sermona, San Diego, CA (US);
Luis Sanchez, San Diego, CA (US);
John Arrizza, Oceanside, CA (US);
GreatCall, Inc., San Diego, CA (US);
Abstract
A method of operating a communications device to maintain a position fix of the communications device includes obtaining a position fix using a position determination capability of the device, such as a global positioning system capability. The method further includes emitting a first acoustic signal, and recording a baseline acoustic signature in response to the emission of the first acoustic signal. The method further includes emitting an additional acoustic signal and recording an additional acoustic signature resulting from the emission of the additional acoustic signal, comparing the baseline acoustic signature with the additional acoustic signature, and estimating, based at least in part on the comparison of the baseline and additional acoustic signatures, whether the communications device has moved between the recordings of the baseline and additional acoustic signatures.