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. 09, 2004
Filed:
Jan. 30, 2001
Masamichi Azuma, Otsu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
An IC card (portable card) having an integrated device. The IC card includes a nonvolatile memory and an encryption circuit . The nonvolatile memory is accessed after the IC card is placed in a radio wave zone to receive a power supply from a terminal apparatus through a radio wave. The encryption circuit coordinates with a first terminal apparatus to perform a mutual authentication. The integrated device includes a nonvolatile memory and an encryption circuit . The nonvolatile memory is accessed after the IC card is placed at a location close to an antenna in the first terminal apparatus and only after the IC card receives a higher-level power supply from the antenna. The encryption circuit coordinates with the terminal apparatus to perform a mutual authentication. Personal information that requires high security is stored in the nonvolatile memory and the encryption circuit performs a mutual authentication whenever the nonvolatile memory is accessed. This provides a high-level security of the personal information.