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    • 5. 发明授权
    • Array of very light readers for active RFID and location applications
    • 用于有源RFID和定位应用的非常轻的阅读器阵列
    • US09307554B2
    • 2016-04-05
    • US12523734
    • 2008-02-28
    • Dani RaphaeliGideon KaplanAbraham MenkesGuy SellaIzhar MarinovUzi Ram
    • Dani RaphaeliGideon KaplanAbraham MenkesGuy SellaIzhar MarinovUzi Ram
    • H04Q5/22H04W74/00G06K7/10G06K17/00
    • G06K7/10019G06K7/10306G06K7/10356G06K2017/0045H04W74/00
    • The Very Light Readers of the present invention are based on an augmented Tag circuit with a preferred embodiment including at least one VLSI chip integrating a UWB front end, digital transceiver, and possibly an internal controller; a UWB Antenna; a power supply; a controller configured to implement the Media Access Control protocol of the system; a Communication Interface subsystem for connection to the system network and a clock source. Also described is a system capable of reducing collision occurrence in a network for communicating between multiple readers and a plurality of RF Tags. Tags are configured to receive interrogation signals and transmit response signals. Readers are configured to transmit interrogation signals, receive response signals, estimate the quantity of responses received to an interrogation, determine the round trip delay time of each response and estimates whether a collision between responses has occurred. If so, the Reader transmits an additional interrogation signal. The Reader also transmits an acknowledgment packet to responding Tags so responding Tag will not answer again to that broadcast session. Other Readers in the network also receive the acknowledge packet and do not try again to reach the responding Tags, thereby lowering congestion directed toward Tags from multiple Reader transmissions.
    • 本发明的超光读取器基于具有优选实施例的增强标签电路,其包括集成UWB前端,数字收发器和可能的内部控制器的至少一个VLSI芯片; UWB天线; 电源; 配置为实现所述系统的媒体访问控制协议的控制器; 用于连接到系统网络的通信接口子系统和时钟源。 还描述了能够减少用于在多个读取器和多个RF标签之间通信的网络中的碰撞发生的系统。 标签配置为接收询问信号并发送响应信号。 读取器配置为发送询问信号,接收响应信号,估计接收到的询问数量,确定每个响应的往返延迟时间,并估计是否发生响应之间的冲突。 如果是这样,读卡器会发送一个额外的询问信号。 读卡器还向响应标签发送确认数据包,因此响应标签不会再次对该广播会话应答。 网络中的其他读者也会收到确认数据包,不要再尝试到达响应标签,从而降低来自多个Reader传输的针对标签的拥塞。
    • 6. 发明申请
    • ARRAY OF VERY LIGHT READERS FOR ACTIVE RFID AND LOCATION APPLICATIONS
    • 用于有源RFID和位置应用的非常轻的读取器的阵列
    • US20100164690A1
    • 2010-07-01
    • US12523734
    • 2008-02-28
    • Dani RaphaeliGideon KaplanAbraham MenkesGuy SelaIzhar MarinovUzi Ram
    • Dani RaphaeliGideon KaplanAbraham MenkesGuy SelaIzhar MarinovUzi Ram
    • H04Q5/22
    • G06K7/10019G06K7/10306G06K7/10356G06K2017/0045H04W74/00
    • The Very Light Readers of the present invention are based on an augmented Tag circuit with a preferred embodiment including at least one VLSI chip integrating a UWB front end, digital transceiver, and possibly an internal controller; a UWB Antenna; a power supply; a controller configured to implement the Media Access Control protocol of the system; a Communication Interface subsystem for connection to the system network and a clock source. Also described is a system capable of reducing collision occurrence in a network for communicating between multiple readers and a plurality of RF Tags. Tags are configured to receive interrogation signals and transmit response signals. Readers are configured to transmit interrogation signals, receive response signals, estimate the quantity of responses received to an interrogation, determine the round trip delay time of each response and estimates whether a collision between responses has occurred. If so, the Reader transmits an additional interrogation signal. The Reader also transmits an acknowledgment packet to responding Tags so responding Tag will not answer again to that broadcast session. Other Readers in the network also receive the acknowledge packet and do not try again to reach the responding Tags, thereby lowering congestion directed toward Tags from multiple Reader transmissions.
    • 本发明的超光读取器基于具有优选实施例的增强标签电路,其包括集成UWB前端,数字收发器和可能的内部控制器的至少一个VLSI芯片; UWB天线; 电源; 配置为实现所述系统的媒体访问控制协议的控制器; 用于连接到系统网络的通信接口子系统和时钟源。 还描述了能够减少用于在多个读取器和多个RF标签之间通信的网络中的碰撞发生的系统。 标签配置为接收询问信号并发送响应信号。 读取器配置为发送询问信号,接收响应信号,估计接收到的询问数量,确定每个响应的往返延迟时间,并估计是否发生响应之间的冲突。 如果是这样,读卡器会发送一个额外的询问信号。 读卡器还向响应标签发送确认数据包,因此响应标签不会再次对该广播会话应答。 网络中的其他读者也会收到确认数据包,不要再尝试到达响应标签,从而降低来自多个Reader传输的针对标签的拥塞。