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31. 发明授权

US08723651B2 Variable rate preamble detection using ratiometric methods 有权
标题翻译：使用比例法的可变速率前导码检测
公开(公告)号：US08723651B2
公开(公告)日：2014-05-13
申请号：US13165739
申请日：2011-06-21
申请人： Dean Kawaguchi
发明人： Dean Kawaguchi
IPC分类号： H03K9/06
CPC分类号： G06K7/0008 , G06K19/0723 , H04Q2213/13095
摘要： A method for detecting a pattern in a signal according to one embodiment includes determining a time between symbol transitions in a signal derived from a radio frequency signal; determining ratios of relational times between consecutive symbol transitions; and comparing a sequence of the ratios to a target pattern for determining whether the sequence corresponds to the target pattern. Such methodology may also be implemented as a system using logic for performing the various operations. Additional systems and methods are also presented.
摘要翻译：根据一个实施例的用于检测信号中的模式的方法包括确定从射频信号导出的信号中的符号转换之间的时间; 确定连续符号转换之间的关系时间的比率; 以及将所述比率的序列与用于确定所述序列是否对应于所述目标图案的目标图案进行比较。这种方法也可以被实现为使用用于执行各种操作的逻辑的系统。还介绍了其他系统和方法。

32. 发明授权

US08581704B2 Battery assisted tag and RFID system 有权
标题翻译：电池辅助标签和RFID系统
公开(公告)号：US08581704B2
公开(公告)日：2013-11-12
申请号：US12369713
申请日：2009-02-11
申请人： Johannes Albertus van Niekerk , Farron Dacus , Alfonso Rodriguez
发明人： Johannes Albertus van Niekerk , Farron Dacus , Alfonso Rodriguez
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K7/10019 , G06K19/0723 , H04Q2213/13095
摘要： Embodiments of the present invention provide for RFID systems that employ a plurality of battery assisted semi-passive and semi-active RFID tags with optimized system operation. The RFID tags feature receivers operating with multiple dynamic range states with square law mode for improved sensitivity, and part time active transmit in the tag to supplement its backscatter transmitter and thus support system operation taking full advantage of the sensitivity of the tag. In certain embodiments of the invention, tag sensitivity and reliability are further enhanced by the use pseudo-random sequence based receiver training and frame synchronizing.
摘要翻译：本发明的实施例提供了使用具有优化的系统操作的多个电池辅助半无源和半有源RFID标签的RFID系统。 RFID标签的特征在于具有多个动态范围状态的接收机，其具有平方律模式以提高灵敏度，并且标签中的兼职主动传输补充其反向散射发射机，从而充分利用标签的灵敏度来支持系统操作。在本发明的某些实施例中，通过使用基于伪随机序列的接收器训练和帧同步来进一步增强标签灵敏度和可靠性。

33. 发明授权

US08570172B2 RFID system with distributed transmitters 有权
标题翻译：具有分布式发射机的RFID系统
公开(公告)号：US08570172B2
公开(公告)日：2013-10-29
申请号：US11530418
申请日：2006-09-08
申请人： Tareef Ibrahim Al-Mahdawi
发明人： Tareef Ibrahim Al-Mahdawi
IPC分类号： G08B13/14 , G06K7/08
CPC分类号： H04B5/0062 , H04B17/27
摘要： A Radio Frequency Identification (RFID) system according to one embodiment includes a reader having a receive antenna in communication therewith, and a plurality of transmitters in communication with the reader and spatially separated from the reader. Methods of use are also presented.
摘要翻译：根据一个实施例的射频识别（RFID）系统包括具有与其通信的接收天线的读取器和与读取器通信并与读取器空间分离的多个发射器。还介绍了使用方法。

34. 发明申请

US20130257598A1 INTERFERENCE DETECTION AND MITIGATION IN RFID READERS AND SYSTEMS 有权
标题翻译： RFID读写器和系统中的干扰检测和缓解
公开(公告)号：US20130257598A1
公开(公告)日：2013-10-03
申请号：US13852961
申请日：2013-03-28
申请人： INTELLEFLEX CORPORATION
发明人： Dean Kawaguchi , Edward M. Farrell , Prasad Panchalan , Manu H. R. Rao
IPC分类号： G06K7/10
CPC分类号： G06K7/10069 , G06K7/10168 , H04B5/0062
摘要： One embodiment of the present invention includes a Radio Frequency Identification (RFID) reader configured to detect radio frequency (RF) interference in and/or outside a band of RFID operation. The RFID reader includes a receive channel for receiving incoming RF signals; and hardware for detecting interference in and/or outside a band of RFID operation. A method for mitigating radio frequency (RF) interference in and/or outside a band of RFID operation, according to one embodiment, includes detecting interference in and/or outside a band of RFID operation; and controlling an aspect of operation of the RFID reader for mitigating the detected interference.
摘要翻译：本发明的一个实施例包括射频识别（RFID）读取器，其被配置为检测RFID操作的频带内和/或外部的射频（RF）干扰。 RFID读取器包括用于接收输入RF信号的接收信道; 以及用于检测RFID操作的频带内和/或外部的干扰的硬件。根据一个实施例，一种用于减轻RFID操作的频带内和/或外部的射频（RF）干扰的方法包括检测RFID操作的频带内和/或外部的干扰; 以及控制RFID读取器的操作的一个方面以减轻检测到的干扰。

35. 发明申请

US20120002762A1 SINGLE OR DUAL COMPLEX SUBCARRIER DOWNCONVERSION 有权
标题翻译：单或双复合SUBCARRIER DOWNCONVERSION
公开(公告)号：US20120002762A1
公开(公告)日：2012-01-05
申请号：US13165733
申请日：2011-06-21
申请人： Dean Kawaguchi
发明人： Dean Kawaguchi
IPC分类号： H04L27/06
CPC分类号： G06K7/0008 , G06K19/0723 , H04Q2213/13095
摘要： A method for subcarrier downconversion and data detection according to one embodiment includes determining whether to use an upper sideband frequency section of a complex downconverter output, a lower sideband frequency section of the complex downconverter output, or both sideband frequency sections of the complex downconverter output; and processing the output corresponding to the selected sideband frequency section or sections based on the determination, wherein the processing includes correlation and data detection. Such methodology may also be implemented as a system using logic for performing the various operations. Additional systems and methods are also presented.
摘要翻译：根据一个实施例的用于副载波下变频和数据检测的方法包括：确定是否使用复数下变频器输出的上边带频率部分，复数下变频器输出的下边带频率部分，或复数下变频器输出的两个边带频率部分; 以及基于所述确定来处理与所选择的边带频率部分相对应的输出，其中所述处理包括相关性和数据检测。这种方法也可以被实现为使用用于执行各种操作的逻辑的系统。还介绍了其他系统和方法。

36. 发明申请

US20120001732A1 VARIABLE RATE PREAMBLE DETECTION USING RATIOMETRIC METHODS 有权
标题翻译：使用比例方法的可变速率预先检测
公开(公告)号：US20120001732A1
公开(公告)日：2012-01-05
申请号：US13165739
申请日：2011-06-21
申请人： Dean Kawaguchi
发明人： Dean Kawaguchi
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K19/0723 , H04Q2213/13095
摘要： A method for detecting a pattern in a signal according to one embodiment includes determining a time between symbol transitions in a signal derived from a radio frequency signal; determining ratios of relational times between consecutive symbol transitions; and comparing a sequence of the ratios to a target pattern for determining whether the sequence corresponds to the target pattern. Such methodology may also be implemented as a system using logic for performing the various operations. Additional systems and methods are also presented.
摘要翻译：根据一个实施例的用于检测信号中的模式的方法包括确定从射频信号导出的信号中的符号转换之间的时间; 确定连续符号转换之间的关系时间的比率; 以及将所述比率的序列与用于确定所述序列是否对应于所述目标图案的目标图案进行比较。这种方法也可以被实现为使用用于执行各种操作的逻辑的系统。还介绍了其他系统和方法。

37. 发明授权

US07683789B2 Compact omni-directional RF system 有权
标题翻译：紧凑型全向RF系统
公开(公告)号：US07683789B2
公开(公告)日：2010-03-23
申请号：US11073239
申请日：2005-03-04
申请人： Roger Green Stewart , Jyn-Bang Shyu
发明人： Roger Green Stewart , Jyn-Bang Shyu
IPC分类号： G08B13/14
CPC分类号： G06K7/10336 , H01Q21/29 , H01Q25/00
摘要： A radio frequency circuit for summing signals from multiple lobes of an antenna includes circuitry for converting RF signals from lobes of an antenna to baseband signals, and circuitry for summing the baseband signals from the lobes of an antenna.
摘要翻译：用于对来自天线的多个波瓣的信号求和的射频电路包括用于将来自天线的波瓣的RF信号转换为基带信号的电路，以及用于对来自天线的波瓣的基带信号求和的电路。

38. 发明申请

US20070285256A1 RFID SYSTEMS AND METHODS 有权
标题翻译： RFID系统和方法
公开(公告)号：US20070285256A1
公开(公告)日：2007-12-13
申请号：US11423408
申请日：2006-06-09
申请人： Naresh Batra
发明人： Naresh Batra
IPC分类号： G08B13/14 , G06K19/06
CPC分类号： G06K19/0704 , G01M5/00 , G06K19/07707 , G06K19/07758 , G08B13/2462
摘要： A Radio Frequency Identification (RFID) tag for use with a vehicle according to one embodiment includes a housing adapted for permanent or detachable coupling to the vehicle, control circuitry coupled to the housing, and a battery for providing power to the control circuitry. A secondary power source is also present for recharging the battery. A memory stores information relating to at least one of the vehicle and an owner of the vehicle. The capability of recharging the battery greatly extends the active (self-powered) life of the tag. Systems for tracking ownership of objects, servicing of vehicles, and other applications, as well as methods are also presented.
摘要翻译：根据一个实施例的用于车辆的射频识别（RFID）标签包括适于永久地或可拆卸地耦合到车辆的壳体，耦合到壳体的控制电路和用于向控制电路提供电力的电池。还存在用于为电池充电的次级电源。存储器存储与车辆和车辆的所有者中的至少一个有关的信息。对电池充电的能力大大延长了标签的主动（自供电）寿命。还介绍了跟踪对象所有权，车辆服务和其他应用程序的系统以及方法。

39. 发明申请

US20070285238A1 RFID SENSOR TAG WITH MANUAL MODES AND FUNCTIONS 有权
标题翻译：具有手动模式和功能的RFID传感器标签
公开(公告)号：US20070285238A1
公开(公告)日：2007-12-13
申请号：US11423699
申请日：2006-06-12
申请人： Naresh Batra
发明人： Naresh Batra
IPC分类号： G08B13/14
CPC分类号： G01K1/024 , G06K7/0008 , G06K19/0705 , G06K19/0717 , G06K19/07703 , G06K19/07749
摘要： A Radio Frequency Identification (RFID) tag according to one embodiment includes a controller, a sensor in communication with the controller, a local power source for providing power to the controller, and a user input device for receiving manual input from a user. A function is selectable by manipulation of the user input device. An RFID tag according to another embodiment of the present invention includes a controller having activate circuitry, the activate circuitry being for detecting a valid activate command in an incoming signal and causing the tag to wake from a hibernate state. An electronic display device is in communication with the controller. A local power source provides power to the controller. A user input device receives manual input from a user. The tag is normally in a hibernate state. Manipulation of the user input device wakes the tag from the hibernate state and/or allows function selection.
摘要翻译：根据一个实施例的射频识别（RFID）标签包括控制器，与控制器通信的传感器，用于向控制器提供电力的本地电源以及用于从用户接收手动输入的用户输入设备。可以通过操纵用户输入设备来选择功能。根据本发明的另一实施例的RFID标签包括具有激活电路的控制器，所述激活电路用于检测输入信号中的有效激活命令并使标签从休眠状态唤醒。电子显示装置与控制器通信。本地电源为控制器提供电源。用户输入设备从用户接收手动输入。标签通常处于休眠状态。操作用户输入设备将唤醒标签从休眠状态和/或允许功能选择。

40. 发明申请

US20070139159A1 Clock generation circuit 审中-公开
标题翻译：时钟发生电路
公开(公告)号：US20070139159A1
公开(公告)日：2007-06-21
申请号：US11305652
申请日：2005-12-15
申请人： Rohit Mittal , Robert Olah , Jyn-Bang Shyu
发明人： Rohit Mittal , Robert Olah , Jyn-Bang Shyu
IPC分类号： H04Q5/22
CPC分类号： H04L7/046 , H04L7/027 , H04L7/06
摘要： A circuit according to one embodiment of the present invention includes a first frequency to voltage converter for storing a reference voltage based on a frequency of an incoming signal, and a second frequency to voltage converter for storing a second voltage based on the frequency of the incoming signal, the second voltage being a fraction of the reference voltage. A voltage to frequency converter creates a voltage on a node, the voltage repeatedly varying between about the reference voltage and about the second voltage. From this varying signal, a clock signal can be derived.
摘要翻译：根据本发明的一个实施例的电路包括：第一频率 - 电压转换器，用于基于输入信号的频率存储参考电压;以及第二频率 - 电压转换器，用于基于输入的频率存储第二电压信号，第二电压是参考电压的一部分。电压到频率转换器在节点上产生电压，电压在约参考电压和约第二电压之间重复变化。从该变化的信号，可以导出时钟信号。

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