公开(公告)号：US20110108617A1

公开(公告)日：2011-05-12

申请号：US12794699

申请日：2010-06-04

申请人： Jong Won Yu ,  Hyeong Seok Jang ,  Won Gyu Lim ,  Won Seok Jeong ,  Jin Ho Ryu ,  Hyun Mi Kim

发明人： Jong Won Yu ,  Hyeong Seok Jang ,  Won Gyu Lim ,  Won Seok Jeong ,  Jin Ho Ryu ,  Hyun Mi Kim

IPC分类号： G06F17/00

CPC分类号： H01P1/2005 ,  G06K7/10009 ,  G06K19/0672

摘要： In an apparatus for recognizing a security code having an electromagnetic band gap (EBG) pattern which uses reflection and transmission characteristics of the EBG pattern, a voltage controlled oscillator generates a signal to a power divider, which divides the power of the signal into halves, and outputs a first signal through a waveguide to be incident on the EBG pattern. The waveguide receives a signal reflected from the EBG pattern and outputs the reflected signal to a phase detector. A circulator outputs the second signal to the phase detector, which detects the phase difference between the reflected signal and the second signal, and outputs phase difference data to a data control unit, which determines whether the security code having the EBG pattern is recognized using the phase difference data. In an alternate embodiment, the voltage control oscillator is controlled to sequentially generate signals using power difference data.

摘要翻译： 在用于识别具有使用EBG图案的反射和传输特性的电磁带隙（EBG）模式的安全码的装置中，压控振荡器产生信号到功率分配器，功率分配器将信号的功率分成两半， 并且通过波导输出要入射到EBG图案上的第一信号。 波导接收从EBG图案反射的信号，并将反射信号输出到相位检测器。 循环器将第二信号输出到检测反射信号和第二信号之间的相位差的相位检测器，并将相位差数据输出到数据控制单元，数据控制单元确定是否使用EBG图案识别具有EBG图案的安全码 相位差数据。 在替代实施例中，控制电压控制振荡器以使用功率差数据顺序产生信号。

公开(公告)号：US08146800B2

公开(公告)日：2012-04-03

申请号：US12794699

申请日：2010-06-04

申请人： Jong Won Yu ,  Hyeong Seok Jang ,  Won Gyu Lim ,  Won Seok Jeong ,  Jin Ho Ryu ,  Hyun Mi Kim

发明人： Jong Won Yu ,  Hyeong Seok Jang ,  Won Gyu Lim ,  Won Seok Jeong ,  Jin Ho Ryu ,  Hyun Mi Kim

IPC分类号： G06F17/00

CPC分类号： H01P1/2005 ,  G06K7/10009 ,  G06K19/0672

摘要： In an apparatus for recognizing a security code having an electromagnetic band gap (EBG) pattern which uses reflection and transmission characteristics of the EBG pattern, a voltage controlled oscillator generates a signal to a power divider, which divides the power of the signal into halves, and outputs a first signal through a waveguide to be incident on the EBG pattern. The waveguide receives a signal reflected from the EBG pattern and outputs the reflected signal to a phase detector. A circulator outputs the second signal to the phase detector, which detects the phase difference between the reflected signal and the second signal, and outputs phase difference data to a data control unit, which determines whether the security code having the EBG pattern is recognized using the phase difference data. In an alternate embodiment, the voltage control oscillator is controlled to sequentially generate signals using power difference data.

摘要翻译： 在用于识别具有使用EBG图案的反射和传输特性的电磁带隙（EBG）模式的安全码的装置中，压控振荡器产生信号到功率分配器，功率分配器将信号的功率分成两半， 并且通过波导输出要入射到EBG图案上的第一信号。 波导接收从EBG图案反射的信号，并将反射信号输出到相位检测器。 循环器将第二信号输出到检测反射信号和第二信号之间的相位差的相位检测器，并将相位差数据输出到数据控制单元，数据控制单元确定是否使用EBG图案识别具有EBG图案的安全码 相位差数据。 在替代实施例中，控制电压控制振荡器以使用功率差数据顺序产生信号。