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:
Jan. 11, 2022
Filed:
Jul. 30, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Riccardo DeSalvo, Pasadena, CA (US);
Giuseppe Castaldi, Apice, IT;
Andrea Cusano, Caserta, IT;
Vincenzo Galdi, Benevento, IT;
Paolo Mattera, Benevento, IT;
Roberto Parente, Cerreto Sannita, IT;
Fereydoun Daneshgaran, La Crescenta, CA (US);
Joseph Minh Tien, Alhambra, CA (US);
Dustin Krogstad, Chino, CA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
The disclosed computer-implemented method may include transmitting, by at least one radar device, a frequency-modulated radar signal to at least one transponder located within a physical environment surrounding a user, detecting, by a processing device communicatively coupled to the at least one radar device a signal returned to the at least one radar device from the at least one transponder in response to the frequency-modulated radar signal, determining a beat frequency of the returned signal by performing a zero-crossing analysis of the returned signal in the time domain, and calculating, based at least in part on the beat frequency of the returned signal, a distance between the at least one transponder and the at least one radar device. Various other methods, systems, and computer-readable media are also disclosed.