发明名称 |
Non-contact information medium and communication system utilizing the same |
摘要 |
In a non-contact IC (integrated circuit) module having an IC chip and a coil, the non-contact IC module communicates with a terminal via a booster unit. A communication system extends a communication distance of data modulated by using a carrier frequency (sub-carrier frequency). A communication auxiliary apparatus is used in a communication between a non-contact information medium and an external appliance.
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申请公布号 |
US6837438(B1) |
申请公布日期 |
2005.01.04 |
申请号 |
US19990430186 |
申请日期 |
1999.10.29 |
申请人 |
HITACHI MAXELL, LTD. |
发明人 |
TAKASUGI WASAO;INOSE FUMIYUKI |
分类号 |
G06K19/07;G06K19/077;(IPC1-7):G06K19/06 |
主分类号 |
G06K19/07 |
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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