发明名称 |
Electronic key system |
摘要 |
An electronic key system has a portable apparatus, an operation control device and an update control device. The portable apparatus selectively transmits a first signal and a second signal. The operation control device authorizes an operation of a key based on reception of Lhe first signal. The update control device transmits an update signal in a private region of the owner of the portable apparatus. The portable apparatus has a counter and a portable apparatus controller. When receiving the update signal, the portable apparatus controller resets the counter. When the counting value of the counter is equal to or less than a predetermined limit value, the controller selects the first signal as a signal to be transmitted. When the counting value is in excess of the limit value, the controller selects the second signal as a signal to be transmitted. <IMAGE> |
申请公布号 |
EP1335328(A2) |
申请公布日期 |
2003.08.13 |
申请号 |
EP20030002307 |
申请日期 |
2003.02.03 |
申请人 |
KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO |
发明人 |
TAKAMURA, KIMITAKE;INAGAKI, OSAMU;SHIBAGAKI, YUUJI |
分类号 |
E05B49/00;B60R25/01;B60R25/10;B60R25/24;G07C9/00 |
主分类号 |
E05B49/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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