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. 28, 2021
Filed:
May. 04, 2015
The Board of Trustees of the Leland Stanford Junior University, Palo Alto, CA (US);
Kiran Joshi, Sunnyvale, CA (US);
Dinesh Bharadia, Menlo Park, CA (US);
Sachin Katti, Stanford, CA (US);
Manikanta Kotaru, Stanford, CA (US);
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY, Palo Alto, CA (US);
Abstract
Techniques for a motion tracing device using radio frequency signals are presented. The motion tracing device utilizes radio frequency signals, such as WiFi to identify moving objects and trace their motion. Methods and apparatus are defined that can measure multiple WiFi backscatter signals and identify the backscatter signals that correspond to moving objects. In addition, motion of a plurality of moving objects can be detected and traced for a predefined duration of time.