发明名称 |
Battery built-in wireless ID card unit and ID verification unit |
摘要 |
A battery built-in wireless ID card unit including a magnetic field detection section which generates an electromotive force from a received magnetic field to turn on a power switch of a built-in battery, and a control section which transmits an ID code by radio after the power switch is turned on, thereby turning off the power switch.
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申请公布号 |
US6011483(A) |
申请公布日期 |
2000.01.04 |
申请号 |
US19970791220 |
申请日期 |
1997.01.31 |
申请人 |
NEC CORPORATION |
发明人 |
TANAKA, MASAHIKO;OKITA, KENJI |
分类号 |
B42D15/10;G06F1/26;G06K7/00;G06K17/00;G06K19/07;(IPC1-7):H04Q1/00 |
主分类号 |
B42D15/10 |
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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