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:
Jan. 31, 2012
Filed:
Jan. 14, 2009
Applicants:
Eui-seung Kim, Suwon-si, KR;
Jong-cheol Kim, Suwon-si, KR;
Inventors:
Eui-Seung Kim, Suwon-si, KR;
Jong-Cheol Kim, Suwon-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A smart card system having: a smart card including a security logic circuit to detect an external attack; and a reader communicating with the smart card. The security logic circuit detects the external attack by measuring the external input capacitance through an input/output pad of the smart card and comparing the external input capacitance to the input capacitance of the reader. This improves the security of the smart card system.