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:
Oct. 05, 2004
Filed:
Nov. 05, 1999
Applicant:
Inventors:
Yoshihiro Ikefuji, Kyoto, JP;
Hiroharu Okada, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/130 ; G06K 1/902 ;
U.S. Cl.
CPC ...
G06F 1/130 ; G06K 1/902 ;
Abstract
In an IC card is sealed an IC chip provided with an exposure sensor . When exposure sensor detects that IC card has been opened, exposure sensor outputs an exposure detection signal to a CPU . In response to the exposure detection signal, CPU provides a predetermined operation, such as erasure of data in a non-volatile memory . As such, the data in non-volatile memory cannot be obtained if IC card is improperly opened to check the data in non-volatile memory . Thus the IC card can obtain an enhanced data security.
Ikefuji, Yoshihiro. (2004). Ic card and ic chip module (U.S. Patent No. 6802008). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6802008
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile