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.

Date of Patent:
Nov. 04, 2014

Filed:

Nov. 10, 2010
Applicants:

Koichi Ikuta, Tokyo, JP;

Naoki Aizawa, Tokyo, JP;

Kenji Inomata, Tokyo, JP;

Hiroshi Kage, Tokyo, JP;

Kazuhiko Sumi, Tokyo, JP;

Inventors:

Koichi Ikuta, Tokyo, JP;

Naoki Aizawa, Tokyo, JP;

Kenji Inomata, Tokyo, JP;

Hiroshi Kage, Tokyo, JP;

Kazuhiko Sumi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/00 (2006.01); G01S 13/52 (2006.01); G08B 13/24 (2006.01); G08B 29/18 (2006.01);
U.S. Cl.
CPC ...
G08B 13/2497 (2013.01); G08B 29/185 (2013.01);
Abstract

A normalization processing circuit normalizes a position of a complex demodulation signal on a complex plane from an A/D converter, and outputs a normalized complex demodulation signal after the normalization to a multiple-dimensional feature extractor. The multiple-dimensional feature extractor calculates a feature quantity that changes when a person intrudes, a feature quantity that changes in wind and rain, and a feature quantity that changes when a spatially isolated intense electric field exists. A discriminator discriminates that a person has intruded based on the feature quantities of three dimensions.


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