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:
Nov. 02, 2010
Filed:
Oct. 30, 2008
Akira Higuchi, Kodaira, JP;
Hirotaka Nishizawa, Fuchu, JP;
Junichiro Osako, Kodaira, JP;
Kenji Osawa, Hachioji, JP;
Akira Higuchi, Kodaira, JP;
Hirotaka Nishizawa, Fuchu, JP;
Junichiro Osako, Kodaira, JP;
Kenji Osawa, Hachioji, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Abstract
An IC card and card adapters are designed so that the IC card of a specific standard (e.g., MMC standard) is compatible with IC cards and terminals of other standards (e.g., MS card standard and USB terminal standard). In the IC card (MMC), a controller IC, which is connected to a flash memory, includes a voltage pull-down detector, a mode controller, a USB-mode interface controller, a MS-mode interface controller, and an MMC/SD-mode interface controller. The card adapters suffice to have component parts which are easy in formation and low in cost such as wiring lines and resistors. The voltage pull-down detector of the IC card detects the voltage pull-down caused by the resistors, and the mode controller selects the USB-mode interface controller, MS-mode interface controller or MMC/SD-mode interface controller so that the IC card becomes compatible with the corresponding IC card standard.