公开(公告)号：US06343744B1

公开(公告)日：2002-02-05

申请号：US09507298

申请日：2000-02-18

申请人： Tsugumichi Shibata ,  Tadao Takeda ,  Toshinori Fukunaga ,  Tomota Ieyasu

发明人： Tsugumichi Shibata ,  Tadao Takeda ,  Toshinori Fukunaga ,  Tomota Ieyasu

IPC分类号： G06K1906

CPC分类号： G06K19/0716 ,  G06K19/005 ,  G06K19/0723 ,  G06K19/07345

摘要： A noncontact type IC card includes an electromagnetic induction coil, integrated circuit, and switch. The electromagnetic induction coil receives the energy of an electromagnetic field radiated from an external device. The integrated circuit can be operated by driving power supplied by the energy of the electromagnetic field. The switch is provided on the electromagnetic induction coil for receiving the energy of the electromagnetic field and switches the inductance of the electromagnetic induction coil.

摘要翻译： 非接触型IC卡包括电磁感应线圈，集成电路和开关。 电磁感应线圈接收从外部装置辐射的电磁场的能量。 可以通过驱动由电磁场的能量提供的电力来操作集成电路。 开关设在电磁感应线圈上，用于接收电磁场的能量，并切换电磁感应线圈的电感。