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. 05, 2011
Filed:
Nov. 27, 2007
Hirotaka Nishizawa, Fuchu, JP;
Akira Higuchi, Kodaira, JP;
Kenji Osawa, Hachioji, JP;
Tamaki Wada, Higashimurayama, JP;
Michiaki Sugiyama, Tokyo, JP;
Junichiro Osako, Kodaira, JP;
Hirotaka Nishizawa, Fuchu, JP;
Akira Higuchi, Kodaira, JP;
Kenji Osawa, Hachioji, JP;
Tamaki Wada, Higashimurayama, JP;
Michiaki Sugiyama, Tokyo, JP;
Junichiro Osako, Kodaira, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
The present invention provides a memory card equipped with an interface controller connected to external connecting terminals, a memory connected to the interface controller, and a security controller connected to the interface controller. A second external connecting terminal capable of supplying an operating power supply to the security controller is provided aside from a first external connecting terminal which supplies an operating power supply to the interface controller and the memory. An interface unit of the interface controller connected to the security controller receives the operating power supply from the second external connecting terminal and thereby enables a stop of the supply of the operating power supply from the first external connecting terminal. Even if the supply of the operating power supply to the interface controller is cut off, the output of the interface unit is not brought to an indefinite state.