-
公开(公告)号:EP0413634B1
公开(公告)日:1996-10-30
申请号:EP90402296.9
申请日:1990-08-14
发明人: Yamanouchi, Kazuhiko, c/o Res. Inst. of Elec. Com. , Morishita, Keiichi, c/o Takasago Tech. Inst.
IPC分类号: G06K19/07 , G06K19/067 , G06K19/077 , G06K7/10
CPC分类号: G07B15/063 , G06K19/0723
-
公开(公告)号:EP0413634A2
公开(公告)日:1991-02-20
申请号:EP90402296.9
申请日:1990-08-14
发明人: Yamanouchi, Kazuhiko, c/o Res. Inst. of Elec. Com. , Morishita, Keiichi, c/o Takasago Tech. Inst.
IPC分类号: G06K19/07 , G06K19/067 , G06K19/077 , G06K7/10
CPC分类号: G07B15/063 , G06K19/0723
摘要: An ID card includes an electric wave receiver for receiving an electric wave (12) from a main station, a modulator (6) for modulating a received signal in accordance with an SD number, and an electric wave transmitter for transmitting a modulated electric wave signal (13) to the main station. The main station identifies the SD card on the basis of the modulated electric wave signal. The ID card further includes a surface acoustic wave exciting device for coupling the electric wave receiver and the electric wave transmitter through surface acoustic wave on a piezoelectric substrate (2) by means of the modulator and a circuit including a terminating device (3) and a switching element (4) and connected in parallel with the surface acoustic wave exciting device. The switching element is controlled to be turned on and off in accordance with the ID number to control the coupling between the electric wave receiver and the electric wave transmitter.
摘要翻译: ID卡包括用于从主站接收电波(12)的电波接收器,用于根据SD号调制接收信号的调制器(6)和用于发送调制电波信号的电波发射器 (13)到主站。 主站根据调制电波信号识别SD卡。 ID卡还包括用于通过调制器在压电衬底(2)上通过表面声波耦合电波接收器和电波发射器的声表面波激励装置,以及包括终端装置(3)和 开关元件(4)并与声表面波激励装置并联连接。 开关元件根据ID号被控制为接通和关断,以控制电波接收器和电波发射器之间的耦合。
-
公开(公告)号:EP0413634A3
公开(公告)日:1994-10-19
申请号:EP90402296.9
申请日:1990-08-14
发明人: Yamanouchi, Kazuhiko, c/o Res. Inst. of Elec. Com. , Morishita, Keiichi, c/o Takasago Tech. Inst.
IPC分类号: G06K19/07 , G06K19/067 , G06K19/077 , G06K7/10
CPC分类号: G07B15/063 , G06K19/0723
摘要: An ID card includes an electric wave receiver for receiving an electric wave (12) from a main station, a modulator (6) for modulating a received signal in accordance with an SD number, and an electric wave transmitter for transmitting a modulated electric wave signal (13) to the main station. The main station identifies the SD card on the basis of the modulated electric wave signal. The ID card further includes a surface acoustic wave exciting device for coupling the electric wave receiver and the electric wave transmitter through surface acoustic wave on a piezoelectric substrate (2) by means of the modulator and a circuit including a terminating device (3) and a switching element (4) and connected in parallel with the surface acoustic wave exciting device. The switching element is controlled to be turned on and off in accordance with the ID number to control the coupling between the electric wave receiver and the electric wave transmitter.
-
-