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:
Jul. 23, 2013
Filed:
Sep. 15, 2009
Shwetak N. Patel, Atlanta, GA (US);
Gregory D. Abowd, Atlanta, GA (US);
Matthew S. Reynolds, Atlanta, GA (US);
Thomas Robertson, Atlanta, GA (US);
Erich Stuntebeck, Atlanta, GA (US);
Shwetak N. Patel, Atlanta, GA (US);
Gregory D. Abowd, Atlanta, GA (US);
Matthew S. Reynolds, Atlanta, GA (US);
Thomas Robertson, Atlanta, GA (US);
Erich Stuntebeck, Atlanta, GA (US);
Georgia Tech Research Corporation, Atlanta, GA (US);
Abstract
An indoor location system uses an electrical power line, power line signal injection devices, and portable position receivers (tags) to generate location data relating to positions of the tags in a structure such as a residence or business. The indoor location system fingerprinting of multiple signals transmitted along the power line to achieve sub-room-level localization of the positioning receivers. In one embodiment, the fingerprinting techniques utilizes wideband power line positioning (WPLP) that injects up to 44 different frequencies into the power line infrastructure of a structure. The WPLP technique improves upon overall positioning accuracy, improved temporal stability and may be implemented in commercial indoor spaces.