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:
Apr. 13, 2010
Wei Wu, Palo Alto, CA (US);
Marco Florentino, Mountain View, CA (US);
R. Stanley Williams, Portola Valley, CA (US);
Wei Wu, Palo Alto, CA (US);
Marco Florentino, Mountain View, CA (US);
R. Stanley Williams, Portola Valley, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Transmitting nodes broadcast chirped signals on a wireless network. The transmitting nodes are time-synchronized with each other and location of the transmitting nodes is known. A receiver node detects beat frequencies created by pairs of chirped signals from different pairs of transmitting nodes. Time delay differences between chirped signals in respective beat frequency pairs are determined. The receiver node's location is determined in view of the time delay differences.