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:
Jul. 13, 2010
Filed:
Jan. 06, 2005
Takuya Tsukagoshi, Sagamihara, JP;
Jiro Yoshinari, Tokyo, JP;
Hideaki Miura, Tokyo, JP;
Tetsuro Mizushima, Moriguchi, JP;
Takuya Tsukagoshi, Sagamihara, JP;
Jiro Yoshinari, Tokyo, JP;
Hideaki Miura, Tokyo, JP;
Tetsuro Mizushima, Moriguchi, JP;
TDK Corporation, Tokyo, JP;
Abstract
In a personal identification systemfor identifying a user on the basis of biometric information, a hologram is formed in a holographic recording portionof an optical information recording medium. The hologram is provided by the interference between a reference beam subjected to spatial light modulation by record cryptographic identification information based on the biometric information of the user obtained by a biological information sensorand an object beam. At the time of identification, an information processing devicemakes validation cryptographic identification information from the biometric information directly obtained from the user, and a spatial light modulatormodulates a hologram reproduction reference beam by the validation cryptographic identification information. The right or wrong of a reproduced image is detected, and the leakage of the identification information is prevented.