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:
Mar. 24, 2026
Filed:
Jun. 08, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takeshi Nakayama, Hyogo, JP;
Shoichi Iizuka, Osaka, JP;
Naoki Honma, Iwate, JP;
Abudusaimi Abuduaini, Iwate, JP;
Nobuyuki Shiraki, Osaka, JP;
Abstract
An estimation method includes: transmitting first transmission signal from one of M first antenna elements of first radio; observing, by N second antenna elements of second radio, first reception signal including reflection signal of first transmission signal from living body; transmitting second transmission signal from one of N second antenna elements; observing second reception signal including reflection signal of second transmission signal from living body; calculating first combined complex transfer function representing propagation characteristics between M first antenna elements and N second antenna elements; calculating second combined complex transfer function by calculation on first combined complex transfer function to reduce effects of clock frequency error and power error between first radio and second radio; extracting biological information of predetermined frequency range corresponding to component related to living body in second combined complex transfer functions; and estimating direction or location of living body using biological information.