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:
Nov. 10, 2009
Filed:
Jan. 29, 2007
Shingo Yokoyama, Yokohama, JP;
Tadayuki Abe, Ichinoseki, JP;
Hiromi Sugo, Kanegasaki, JP;
Shoichi Sato, Ebina, JP;
Shingo Yokoyama, Yokohama, JP;
Tadayuki Abe, Ichinoseki, JP;
Hiromi Sugo, Kanegasaki, JP;
Shoichi Sato, Ebina, JP;
Hitachi Media Electronics Co., Ltd., Iwate-ken, JP;
Abstract
A biometric identification apparatus that can accurately and rapidly perform liveness detection with a simple structure. The apparatus includes a plurality of light sources, and, each having a wavelength different from one another, for emitting light to a fingeras an object to be identified, and receiversandfor detecting the light passing through the finger. The ratio of the light emitted from the light sources to the light detected with the receivers is obtained as transmittance. Determination in liveness detection is made by comparing the transmittance with a previously-set threshold of transmittance.