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. 26, 2023
Filed:
Aug. 25, 2021
International Business Machines Corporation, Armonk, NY (US);
Lior Limonad, Afek, IL;
Dean Haber, Haifa, IL;
Ashafaaq Minhas, Jersey City, NJ (US);
John Maxwell Cohn, Richmond, VT (US);
Marc PH. Stoecklin, Richterswil, CH;
Nirmit V Desai, Yorktown Heights, NY (US);
Jonathan Muehlstein, Zikhron Ya'akov, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of determining a range between two devices, which can for instance be wireless devices, such as handheld devices. The method performs a double-sided two-way ranging protocol at the two devices. This protocol causes the two devices to transmit and receive signals, with a view to determining the range between the two devices, using a two-way ranging methods, where each of the signals is a composite tone generated as a composition of two waveforms that are timewise separated by a gap to form a bipolar waveform. The gap is a zero or low-amplitude signal, contrasting with the two waveforms. The particular pattern in the correlation footprint eases the determination of the time of flight. The method can be used to measure social distancing.