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.

Date of Patent:
Feb. 09, 2016

Filed:

Nov. 21, 2013
Applicant:

Microsoft Corporation, Redmond, WA (US);

Inventors:

Sanjib Saha, Sammamish, WA (US);

Fernando Gonzalez, Bellevue, WA (US);

Shaun Hedrick, Seattle, WA (US);

Parmjeet Singh, Seattle, WA (US);

Ashish Gadre, Kirkland, WA (US);

Frank Gorgenyi, Bremerton, WA (US);

Mark Inderhees, Woodinville, WA (US);

Janet Schneider, Bellevue, WA (US);

Stuart Harper, Seattle, WA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/02 (2009.01); G01S 19/34 (2010.01); G01S 19/48 (2010.01);
U.S. Cl.
CPC ...
H04W 4/021 (2013.01); G01S 19/34 (2013.01); G01S 19/48 (2013.01);
Abstract

Systems and methods disclosed herein may include tracking one or more geo-fences using a GNSS hardware processor within a computing device. The tracking may use at least one GNSS signal. State changes of the one or more geo-fences during the tracking may be saved in a shared state database. The shared state database may be shared between the GNSS hardware processor and an application processor within the computing device. Upon detecting a deterioration of the at least one GNSS signal, tracking the one or more geo-fences may be switched from using the GNSS hardware processor to using the application processor. After the switching, an initial state of each of the one or more geo-fences may be set by using states currently stored in the shared state database prior to the switching.


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