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:
Dec. 25, 2012
Filed:
Aug. 13, 2010
Charles Mendis, Mountain View, CA (US);
Charles Mendis, Mountain View, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
In one embodiment, a client device generates a location fingerprint. The fingerprint may include various data identified by scanning for WiFi network devices such as the MAC addresses of nearby WiFi access location as well as the respective signal strengths. For each fingerprint location, the client device attempts to use a GPS receiver to scan for GPS satellite signals and identify current GPS latitude and longitude coordinates. After a predetermined period of time, the success or failure of the attempt is recorded and included in the fingerprint. When the client device returns to the location, identified by reviewing the fingerprint, the client device may activate or inhibit the GPS receiver based on the success information of the fingerprint. If the stored data indicates a low success rate, other location identification techniques may be used.