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公开(公告)号:US07456746B2
公开(公告)日:2008-11-25
申请号:US11513667
申请日:2006-08-31
申请人: Sean T. Loving , Sayan Chakraborty , Tim Enwall , Christopher Chan , Lee Snook , Rohit Majhi
发明人: Sean T. Loving , Sayan Chakraborty , Tim Enwall , Christopher Chan , Lee Snook , Rohit Majhi
IPC分类号: G08B13/14
CPC分类号: H04B1/24 , G06K7/0008 , G06K7/10356 , H04B1/22 , H04B1/58
摘要: A phase shifting diode detector system for an RFID reader. Quarter-wave delay circuitry is coupled between a forward transmitted signal of the RFID reader applied at a first end of the delay circuitry, and a reflected signal returning from an RFID tag applied at a second end of the delay circuitry. The system includes a pair of diode detector bridges, each comprising a series-coupled diode pair configured such that diode polarities in each bridge are reversed relative to the output thereof, to produce opposite rectified signal output polarities. An input to each of the bridges is capacitively coupled, from the junction between each said diode pair, to a respective opposite end of the delay circuitry.
摘要翻译: 一种用于RFID读取器的相移二极管检测器系统。 四分之一波延迟电路耦合在延迟电路的第一端处应用的RFID读取器的前向发射信号和从在延迟电路的第二端施加的RFID标签返回的反射信号。 该系统包括一对二极管检测器桥,每个二极管检测器桥包括串联耦合二极管对,其配置为使得每个桥中的二极管极性相对于其输出反转,以产生相反的整流信号输出极性。 每个桥接器的输入端从每个所述二极管对之间的接点电容耦合到延迟电路的相应的相对端。
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公开(公告)号:US20070182558A1
公开(公告)日:2007-08-09
申请号:US11513667
申请日:2006-08-31
申请人: Sean Loving , Sayan Chakraborty , Tim Enwall , Christopher Chan , Lee Snook , Rohit Majhi
发明人: Sean Loving , Sayan Chakraborty , Tim Enwall , Christopher Chan , Lee Snook , Rohit Majhi
CPC分类号: H04B1/24 , G06K7/0008 , G06K7/10356 , H04B1/22 , H04B1/58
摘要: A phase shifting diode detector system for an RFID reader. Quarter-wave delay circuitry is coupled between a forward transmitted signal of the RFID reader applied at a first end of the delay circuitry, and a reflected signal returning from an RFID tag applied at a second end of the delay circuitry. The system includes a pair of diode detector bridges, each comprising a series-coupled diode pair configured such that diode polarities in each bridge are reversed relative to the output thereof, to produce opposite rectified signal output polarities. An input to each of the bridges is capacitively coupled, from the junction between each said diode pair, to a respective opposite end of the delay circuitry.
摘要翻译: 一种用于RFID读取器的相移二极管检测器系统。 四分之一波延迟电路耦合在延迟电路的第一端处应用的RFID读取器的前向发射信号和从在延迟电路的第二端施加的RFID标签返回的反射信号。 该系统包括一对二极管检测器桥,每个二极管检测器桥包括串联耦合二极管对,其配置为使得每个桥中的二极管极性相对于其输出反转,以产生相反的整流信号输出极性。 每个桥接器的输入端从每个所述二极管对之间的接点电容耦合到延迟电路的相应的相对端。
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公开(公告)号:US20060238302A1
公开(公告)日:2006-10-26
申请号:US11301396
申请日:2005-12-13
申请人: Sean Loving , Christopher Chan , Rohit Majhi , Tim Enwall
发明人: Sean Loving , Christopher Chan , Rohit Majhi , Tim Enwall
IPC分类号: H04Q5/22
CPC分类号: G06K7/0008
摘要: Systems and methods for configuring an RFID tag reader based upon one or more aspects of an environment of the RFID tag reader are disclosed. In one embodiment, a tag reader is deployed into an environment that includes readable RFID tags capable of storing dynamic data, and a characteristic of the environment of the tag reader is identified. Based upon the identified characteristic, the configuration of the tag reader is adjusted. In variations, the tag reader is configurable based upon information received from RFID tags. A method for enhancing RFID tag reading performance for example includes sending a first signal to each of a plurality of RFID tags. Information is received from at least one of the plurality of tags, at an RFID tag reader, and a configuration of the tag reader is adjusted based upon at least a portion of the received information.
摘要翻译: 公开了基于RFID标签读取器的环境的一个或多个方面来配置RFID标签读取器的系统和方法。 在一个实施例中,标签读取器被部署到包括能够存储动态数据的可读RFID标签的环境中,并且识别标签读取器的环境的特性。 基于所识别的特征,调整标签读取器的配置。 在变型中,标签读取器可基于从RFID标签接收的信息来配置。 用于增强RFID标签读取性能的方法例如包括向第一RFID标签中的每一个发送第一信号。 在RFID标签读取器处从多个标签中的至少一个标签接收信息,并且基于所接收的信息的至少一部分来调整标签读取器的配置。
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公开(公告)号:US20060238305A1
公开(公告)日:2006-10-26
申请号:US11301770
申请日:2005-12-13
申请人: Sean Loving , Christopher Chan , Rohit Majhi , Tim Enwall
发明人: Sean Loving , Christopher Chan , Rohit Majhi , Tim Enwall
IPC分类号: H04Q5/22
CPC分类号: G06K7/0008
摘要: Systems and methods for configuring a RFID tag reader based upon one or more aspects of an environment of the RFID tag reader are disclosed. In one embodiment, a tag reader is deployed into an environment that includes readable RFID tags capable of storing dynamic data, and a characteristic of the environment of the tag reader is identified. Based upon the identified characteristic, the configuration of the tag reader is adjusted. In variations, the tag reader is configurable based upon information received from RFID tags. In another embodiment, a configurable RFID tag reader includes a processing portion that sends a first signal to each of a plurality of RFID tags. The processing portion receives information from at least one of the plurality of RFID tags, and adjusts a configuration of the RFID tag reader based upon at least a portion of the information.
摘要翻译: 公开了基于RFID标签读取器的环境的一个或多个方面来配置RFID标签读取器的系统和方法。 在一个实施例中,标签读取器被部署到包括能够存储动态数据的可读RFID标签的环境中,并且识别标签读取器的环境的特性。 基于所识别的特征,调整标签读取器的配置。 在变型中,标签读取器可基于从RFID标签接收的信息来配置。 在另一实施例中,可配置RFID标签读取器包括向第一RFID标签中的每一个发送第一信号的处理部分。 所述处理部分从所述多个RFID标签中的至少一个接收信息,并且基于所述信息的至少一部分来调整所述RFID标签读取器的配置。
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