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1. 发明授权

US07782209B2 Detection signal generator circuit for an RFID reader 有权
标题翻译：用于RFID读取器的检测信号发生器电路
公开(公告)号：US07782209B2
公开(公告)日：2010-08-24
申请号：US11396290
申请日：2006-03-31
申请人： Peter R. Lowe , James D. Hoemann
发明人： Peter R. Lowe , James D. Hoemann
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/0086 , G06K7/10009 , G06K7/10128
摘要： An RFID transponder detector is provided having a coupled oscillator system. Coupled first and second LC of the system produce a detection signal each time a combination of pulses is applied to the LC pairs. Application of the pulses is repeated periodically to produce a sequence for detection signals having two different first and second detection frequencies. Transmitting the sequence of detection signals results in corresponding first and second response signals having the first and second detection frequencies at the LC pairs. Values of a preselected detection parameter for the detection signals are compared to the values of the detection parameter for the response signals to determine if a transponder having a transponder resonant frequency corresponding to the first or second detection frequency is present in a proximal space of the transponder detector.
摘要翻译：提供了具有耦合振荡器系统的RFID应答器检测器。每当脉冲组合施加到LC对时，系统的耦合的第一和第二LC产生检测信号。周期性重复脉冲的应用以产生具有两个不同的第一和第二检测频率的检测信号的序列。发送检测信号的序列导致在LC对具有第一和第二检测频率的对应的第一和第二响应信号。将检测信号的预选检测参数的值与响应信号的检测参数的值进行比较，以确定具有与第一或第二检测频率相对应的应答器谐振频率的应答器是否存在于应答器的近端空间中探测器。

2. 发明授权

US4990756A Apparatus and method for emulating bar codes 失效
标题翻译：用于模拟条形码的装置和方法
公开(公告)号：US4990756A
公开(公告)日：1991-02-05
申请号：US224561
申请日：1988-07-25
申请人： James D. Hoemann
发明人： James D. Hoemann
IPC分类号： G06K7/00
CPC分类号： G06K7/0008
摘要： An apparatus is provided that includes a bar code emulator for translating an RF carrier signal modulated, preferably, using the American Standard Code for Information Interchange (ASCII) symbology into a signal suitably formatted for input to a standard bar code decoder. A sensor interface is included in the bar code emulator for demodulating the RF signal. A control interface is included for specifying the format of the resulting signals. A processor translates the ASCII symbols according to the format specified at the control interface. The resulting signals are output on a decoder interface that communicates with the standard bar code decoder.
摘要翻译：提供了一种装置，其包括条形码仿真器，用于将最佳地使用美国信息交换标准代码（ASCII）符号系统调制的RF载波信号转换成适当格式化以输入到标准条形码解码器的信号。条形码仿真器中包含传感器接口，用于解调RF信号。包括一个控制界面，用于指定结果信号的格式。处理器根据控制界面指定的格式转换ASCII符号。所得信号在与标准条形码解码器通信的解码器接口上输出。

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