公开(公告)号：US09514336B2

公开(公告)日：2016-12-06

申请号：US12640840

申请日：2009-12-17

申请人： Martin J. Strzelczyk ,  Sean A. Connolly ,  Mark W. Duron

发明人： Martin J. Strzelczyk ,  Sean A. Connolly ,  Mark W. Duron

IPC分类号： G08B21/00 ,  G06K7/00 ,  G06K7/10

CPC分类号： G06K7/0008 ,  G06K7/10217 ,  H04Q2213/13095

摘要： A method and system for adaptive operation of a power amplifier of an RFID reader device enables more efficient power management of the reader device. The method includes transmitting an RF interrogation signal from an antenna of the RFID reader device (step 505). A reflected signal is then received as a partial reflection of the interrogation signal (step 510). A return loss value is then estimated by comparing at least one parameter of the interrogation signal and at least one parameter of the reflected signal (step 515). Finally, an operating point of the power amplifier is adjusted in response to the return loss value (step 520).

摘要翻译： 用于RFID读取器设备的功率放大器的自适应操作的方法和系统能够实现读取器设备的更有效的电源管理。 该方法包括从RFID读取器设备的天线发送RF询问信号（步骤505）。 然后接收反射信号作为询问信号的部分反射（步骤510）。 然后通过比较询问信号的至少一个参数和反射信号的至少一个参数来估计回波损耗值（步骤515）。 最后，根据回波损耗值调整功率放大器的工作点（步骤520）。

公开(公告)号：US07039358B1

公开(公告)日：2006-05-02

申请号：US09714803

申请日：2000-11-16

申请人： Stephen J. Shellhammer ,  Jacob Sharony ,  Anthony D. Biuso ,  Sean A. Connolly ,  William Sackett ,  Joseph Cabana ,  Patrick Tilley ,  Robert Beach

发明人： Stephen J. Shellhammer ,  Jacob Sharony ,  Anthony D. Biuso ,  Sean A. Connolly ,  William Sackett ,  Joseph Cabana ,  Patrick Tilley ,  Robert Beach

IPC分类号： H04B7/00

CPC分类号： H04W16/14 ,  Y02D70/10

摘要： Techniques are provided for frequency coordination among two different wireless network protocols, such as the IEEE 802.11 and Bluetooth protocols, operating in proximity with one another. Coordination is accomplished by the use of a first radio transceiver operating in accordance with a first communication protocol (which may be the 802.11 protocol) and using a frequency band (which may be the 2.4 GHz band), a base station connected to a wired network and operating in accordance with the first communication protocol, a second radio transceiver operating in accordance with a second communication protocol (which may be the Bluetooth protocol) and using the frequency band, and a coordinator associated with the base station for, in turn, activating the first radio transceiver, deactivating the first radio transceiver, activating the second radio transceiver, and deactivating the second radio transceiver.

摘要翻译： 提供技术用于两个不同的无线网络协议之间的频率协调，诸如IEEE 802.11和蓝牙协议，彼此靠近地操作。 通过使用根据第一通信协议（可以是802.11协议）和使用频带（其可以是2.4GHz频带）操作的第一无线电收发机，连接到有线网络的基站来实现协调 并且根据第一通信协议进行操作，根据第二通信协议（可以是蓝牙协议）和使用该频带操作的第二无线电收发机以及与该基站相关联的协调器，从而进行激活 所述第一无线电收发器，去激活所述第一无线电收发器，激活所述第二无线电收发器，以及停用所述第二无线电收发器。

公开(公告)号：US20110148579A1

公开(公告)日：2011-06-23

申请号：US12640840

申请日：2009-12-17

申请人： Martin J. Strzelczyk ,  Sean A. Connolly ,  Mark W. Duron

发明人： Martin J. Strzelczyk ,  Sean A. Connolly ,  Mark W. Duron

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008 ,  G06K7/10217 ,  H04Q2213/13095

摘要： A method and system for adaptive operation of a power amplifier of an RFID reader device enables more efficient power management of the reader device. The method includes transmitting an RF interrogation signal from an antenna of the RFID reader device (step 505). A reflected signal is then received as a partial reflection of the interrogation signal (step 510). A return loss value is then estimated by comparing at least one parameter of the interrogation signal and at least one parameter of the reflected signal (step 515). Finally, an operating point of the power amplifier is adjusted in response to the return loss value (step 520).

摘要翻译： 用于RFID读取器设备的功率放大器的自适应操作的方法和系统能够实现读取器设备的更有效的电源管理。 该方法包括从RFID读取器设备的天线发送RF询问信号（步骤505）。 然后接收反射信号作为询问信号的部分反射（步骤510）。 然后通过比较询问信号的至少一个参数和反射信号的至少一个参数来估计回波损耗值（步骤515）。 最后，根据回波损耗值调整功率放大器的工作点（步骤520）。

公开(公告)号：US08400272B2

公开(公告)日：2013-03-19

申请号：US12630356

申请日：2009-12-03

申请人： Mark W. Duron ,  Sean A. Connolly ,  Richard T. Knadle ,  Martin Strzelczyk

发明人： Mark W. Duron ,  Sean A. Connolly ,  Richard T. Knadle ,  Martin Strzelczyk

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008 ,  H04Q2213/13095

摘要： A method and device enables improving a signal to noise ratio (SNR) of a backscatter signal received from a radio frequency identification (RFID) tag. The method includes generating a continuous wave (CW) carrier signal at the reader device (step 505). An amplitude modulation (AM) noise component of the CW carrier signal is then detected (step 510). The AM noise component is inverted to an inverted noise signal (step 515), and the inverted noise signal is summed with the CW carrier signal to provide an AM noise cancelled carrier signal (step 520). The AM noise cancelled carrier signal is then transmitted from an antenna of the reader device (step 525), and the backscatter signal is received at the reader device in response to transmission of the AM noise cancelled carrier signal (step 530).

摘要翻译： 一种方法和装置能够改善从射频识别（RFID）标签接收的反向散射信号的信噪比（SNR）。 该方法包括在读取器装置处产生连续波（CW）载波信号（步骤505）。 然后检测CW载波信号的调幅（AM）噪声分量（步骤510）。 AM噪声分量被反转为反相噪声信号（步骤515），并将反相噪声信号与CW载波信号相加以提供AM噪声消除载波信号（步骤520）。 然后从读取器装置的天线发送AM噪声消除的载波信号（步骤525），并且响应于AM噪声消除载波信号的发送在读取器装置处接收后向散射信号（步骤530）。

公开(公告)号：US20110133890A1

公开(公告)日：2011-06-09

申请号：US12630356

申请日：2009-12-03

申请人： Mark W. Duron ,  Sean A. Connolly ,  Richard T. Knadle ,  Martin Strzelczyk

发明人： Mark W. Duron ,  Sean A. Connolly ,  Richard T. Knadle ,  Martin Strzelczyk

IPC分类号： H04Q5/22 ,  H04B15/00

CPC分类号： G06K7/0008 ,  H04Q2213/13095

摘要： A method and device enables improving a signal to noise ratio (SNR) of a backscatter signal received from a radio frequency identification (RFID) tag. The method includes generating a continuous wave (CW) carrier signal at the reader device (step 505). An amplitude modulation (AM) noise component of the CW carrier signal is then detected (step 510). The AM noise component is inverted to an inverted noise signal (step 515), and the inverted noise signal is summed with the CW carrier signal to provide an AM noise cancelled carrier signal (step 520). The AM noise cancelled carrier signal is then transmitted from an antenna of the reader device (step 525), and the backscatter signal is received at the reader device in response to transmission of the AM noise cancelled carrier signal (step 530).

摘要翻译： 一种方法和装置能够改善从射频识别（RFID）标签接收的反向散射信号的信噪比（SNR）。 该方法包括在读取器装置处产生连续波（CW）载波信号（步骤505）。 然后检测CW载波信号的幅度调制（AM）噪声分量（步骤510）。 AM噪声分量被反转为反相噪声信号（步骤515），并将反相噪声信号与CW载波信号相加以提供AM噪声消除载波信号（步骤520）。 然后从读取器装置的天线发送AM噪声消除的载波信号（步骤525），并且响应于AM噪声消除载波信号的发送在读取器装置处接收后向散射信号（步骤530）。

公开(公告)号：US06992564B2

公开(公告)日：2006-01-31

申请号：US09909369

申请日：2001-07-19

申请人： Sean A. Connolly ,  William Sackett ,  Stephen J. Shellhammer ,  Frank Boccuzzi ,  Adam Levine

发明人： Sean A. Connolly ,  William Sackett ,  Stephen J. Shellhammer ,  Frank Boccuzzi ,  Adam Levine

IPC分类号： G06F7/00

CPC分类号： G06K17/00 ,  G06K2017/0045

摘要： A system and method described for tracking portable devices. The system may include a transmitter which transmits wireless inquiries to a plurality of portable devices and a receiver receiving replies to the inquiries from the portable devices. In addition, the system may include a memory storing identifier data corresponding to the portable devices and a processor coupled to the memory and to the receiver, the processor retrieving from each reply, identifier data uniquely identifying a particular one of the portable devices which generated the reply and comparing the identifier data to the stored identifier data. Furthermore, the system may include an alarm system coupled to the processor and controlled based on the comparison of stored identifier data to the identifier data retrieved from the replies.