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:
Apr. 21, 2009
Filed:
Dec. 22, 2006
Minoru Handa, Kanagawa, JP;
Taro Kurita, Tokyo, JP;
Norio Uchida, Kanagawa, JP;
Felica Networks, Inc., Tokyo, JP;
Abstract
A reader/writer that reads or writes information from or in an Integrated Circuit (IC) module, in which one or more applications are loaded, in response to an instruction issued from a controller in which counter-applications compatible with the applications are loaded. The reader/writer includes a memory in which one or more pieces of IC access authentication information that are associated with the applications in the IC module and that are used to authenticate the associated applications respectively are stored. The memory also stores pieces of group authentication information. A control unit authenticates a counter-application using group authentication information and, if the authentication succeeds, permits the counter-application to use IC access authentication information belonging to a group identified with the group authentication information.