发明授权
- 专利标题: Dual purpose portable card, a communication system, a communication method, a terminal apparatus, and a computer-readable record medium recording a program
- 专利标题(中): 双用便携式卡,通信系统,通信方法,终端装置和记录程序的计算机可读记录介质
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申请号: US10794333申请日: 2004-03-05
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公开(公告)号: US06840443B2公开(公告)日: 2005-01-11
- 发明人: Masamichi Azuma
- 申请人: Masamichi Azuma
- 申请人地址: JP Osaka-fu
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka-fu
- 优先权: JP10-217236 19980731
- 主分类号: G05B19/18
- IPC分类号: G05B19/18 ; G06K5/00 ; G06K7/00 ; G06K7/08 ; G06K17/00 ; G06K19/06 ; G06K19/07 ; G06K19/073
摘要:
An IC card 1 having an integrated device includes a nonvolatile memory 12 and an encryption circuit 10. The nonvolatile memory 12 after the IC card 1 is placed in a radio wave zone to receive a power supply from a terminal apparatus through a radio wave. The encryption circuit 10 coordinates with a first terminal apparatus to perform a mutual authentication. The integrated device includes a nonvolatile memory 13 and an encryption circuit 11. The nonvolatile memory 13 is accessed after the IC card 1 is placed at a location close to an antenna in the first terminal apparatus and only after the IC card 1 receives a higher-level power supply from the antenna. The encryption circuit 11 coordinates with the terminal apparatus to perform a mutual authentication. Personal information that requires high security is stored in the nonvolatile memory 13 and the encryption circuit 11 performs a mutual authentication whenever the nonvolatile memory 13 is accessed.
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