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:
Mar. 10, 2009
Filed:
Mar. 17, 2006
Kensaku Mori, Yokohama, JP;
Masayuki Terada, Yokosuka, JP;
Kazuhiko Ishii, Yokohama, JP;
Sadayuki Hongo, Yokohama, JP;
Kensaku Mori, Yokohama, JP;
Masayuki Terada, Yokosuka, JP;
Kazuhiko Ishii, Yokohama, JP;
Sadayuki Hongo, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
It is an object to provide a tamper resistant device and a file generation method which can store right value information such as a ticket information, and guarantee validity of the right value information without executing a digital signature processing. An IC cardattached to a portable terminalreceives, from an applicationright value information representing a right value and a file generation message instructing generation of a rights-file. The right value information includes file data representing the right value, data size and the like. Upon determining that a file generation message is received, the IC cardgenerates a rights-file including the IC card identification ID and right value information which are previously stored in the IC card