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. 20, 2011
Filed:
Sep. 05, 2007
Applicants:
Ayako Imamura, Anjo, JP;
Mitsuhiro Ando, Toyohashi, JP;
Shunsuke Kogure, Toyota, JP;
Inventors:
Assignee:
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A heart beat sensor () comprises signal processing means () for performing frequency analysis of the output signal of a piezoelectric sensor () installed in a seat () and judging means () judges on the basis of the results of the frequency analysis that if the amplitude of the signal component in a first preset frequency range included in the output signal is in a preset amplitude range, the signal component includes a human body seating waveform indicating a person is seated in the seat ().