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:
Jul. 07, 2009
Filed:
Apr. 27, 2007
Nagamasa Mizushima, Machida, JP;
Kunihiro Katayama, Chigasaki, JP;
Masaharu Ukeda, Yokohama, JP;
Yoshinori Mochizuki, Yokohama, JP;
Nagamasa Mizushima, Machida, JP;
Kunihiro Katayama, Chigasaki, JP;
Masaharu Ukeda, Yokohama, JP;
Yoshinori Mochizuki, Yokohama, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
In a SIM card having a flash memory chip, a memory controller chip, and contact/contactless card interfaces, the memory controller chip has a function of executing user authentication of a host equipment, executes processing of data transmitted through the contactless IC card interface (executing reading or writing of data to the flash memory chip) using power supplied from the host equipment to the contact IC card interface, and executes initialization of the flash memory chip between activation of the host equipment and completion of user authentication instructed by the host equipment.