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:
Jun. 16, 2009
Filed:
Aug. 12, 2004
Toshishige Shimamura, Kanagawa, JP;
Hiroki Morimura, Kanagawa, JP;
Satoshi Shigematsu, Kanagawa, JP;
Norio Sato, Kanagawa, JP;
Masami Urano, Kanagawa, JP;
Katsuyuki Machida, Kanagawa, JP;
Toshishige Shimamura, Kanagawa, JP;
Hiroki Morimura, Kanagawa, JP;
Satoshi Shigematsu, Kanagawa, JP;
Norio Sato, Kanagawa, JP;
Masami Urano, Kanagawa, JP;
Katsuyuki Machida, Kanagawa, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A response signal generating unit () applies a predetermined supply signal (S) to a detection element () and outputs, as a response signal (S), a signal which has changed in accordance with the impedance of an object () with which the unit is in contact through the detection element (). A waveform information detection unit () detects waveform information corresponding to the impedance of the object () on the basis of the response signal (S) from the response signal generating unit (), and outputs a detection signal (S) representing the waveform information. A biometric recognition unit () determines on the basis of the detection signal (S) from the waveform information detection unit () whether or not the object () is a living body.