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. 29, 2010
Filed:
Jul. 18, 2008
Applicants:
Akihiro Zemba, Sendai, JP;
Hidetaka Fukazawa, Miyatoko, JP;
Inventors:
Akihiro Zemba, Sendai, JP;
Hidetaka Fukazawa, Miyatoko, JP;
Assignee:
Freescale Semiconductor, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 7/08 (2006.01); G06K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An authentication system for reducing the power consumed during an authentication process and shortening the authentication time includes an electrode plate. The electrode plate has a unique shape that defines an authentication key. An electric field sensor detects capacitance corresponding to the shape of the electrode plate to generate a detection signal. A signal monitor compares the detection signal of the electric field sensor with a preset signal and generates a determination signal indicating the comparison result.