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:
May. 15, 2018
Filed:
Sep. 10, 2014
Applicants:
Kyushu Institute of Technology, Kitakyushu-shi, Fukuoka, JP;
Ai Technology Inc., Fukuoka-shi, Fukuoka, JP;
Inventor:
Yasushi Sato, Kitakyushu, JP;
Assignees:
KYUSHU INSTITUTE OF TECHNOLOGY, Kitakyusha-shi, JP;
AI TECHNOLOGY INC., Fukuoka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G06F 3/045 (2006.01); G01V 3/10 (2006.01); H03K 17/95 (2006.01);
U.S. Cl.
CPC ...
G01V 3/105 (2013.01); G01V 3/101 (2013.01); H03K 17/9545 (2013.01);
Abstract
A first oscillation circuit in which a helical antenna is used as a part of an element for a resonance circuit and a second oscillation circuit in which a loop antenna is used as a part of an element for a resonance circuit are caused to oscillate at substantially the same frequency. When a human body approaches the helical antenna and the loop antenna, the frequency difference between the first oscillation circuit and the second oscillation circuit increases. This frequency difference is extracted using a BPF.