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1. 发明授权

US07156312B2 RFID tag having multiple transceivers 失效
标题翻译： RFID标签具有多个收发器
公开(公告)号：US07156312B2
公开(公告)日：2007-01-02
申请号：US10726367
申请日：2003-12-03
申请人： Robert C. Becker , David W. Meyers , Sabera Kazi
发明人： Robert C. Becker , David W. Meyers , Sabera Kazi
IPC分类号： G06K19/06
CPC分类号： G06K19/0705 , G06K7/0008 , G06K19/0723
摘要： Information is communicated between an RFID tag and first and second readers. A first transceiver of the RFID tag is controlled so that the first transceiver communicates with the first reader and so that the first transceiver has substantially longer periods during which the first transceiver is not in communication with the first reader than when the first transceiver is in communication with the first reader. A second transceiver of the RFID tag is controlled so that the second transceiver communicates with the second reader at least during the periods when the first transceiver is not in communication with the first reader. The RFID tag may also have a battery, a switch coupling the battery to at least the first transceiver, and a controller that operates the switch in a duty cycle such that power is provided by the battery to the first transceiver during ON times of the duty cycle and such that power from the battery to the first transceiver is interrupted during OFF times of the duty cycle.
摘要翻译：在RFID标签与第一和第二读取器之间传送信息。控制RFID标签的第一收发器，使得第一收发器与第一读取器通信，并且使得第一收发器具有比第一收发器处于通信时具有比第一收发器不与第一读取器通信的基本上更长的周期与第一读者。控制RFID标签的第二收发器，使得第二收发器至少在第一收发器不与第一读取器通信的时段期间与第二读取器通信。 RFID标签还可以具有电池，将电池耦合到至少第一收发器的开关以及以占空比操作开关的控制器，使得在开启ON时间期间电池向第一收发器提供电力并且使得在占空比的OFF时间期间从电池到第一收发器的电力中断。

2. 发明授权

US06726099B2 RFID tag having multiple transceivers 失效
标题翻译： RFID标签具有多个收发器
公开(公告)号：US06726099B2
公开(公告)日：2004-04-27
申请号：US10235564
申请日：2002-09-05
申请人： Robert C. Becker , David W. Meyers , Sabera Kazi
发明人： Robert C. Becker , David W. Meyers , Sabera Kazi
IPC分类号： G06K500
CPC分类号： G06K19/0705 , G06K7/0008 , G06K19/0723
摘要： Information is communicated between an RFID tag and first and second readers. A first transceiver of the RFID tag is controlled so that the first transceiver communicates with the first reader and so that the first transceiver has substantially longer periods during which the first transceiver is not in communication with the first reader than when the first transceiver is in communication with the first reader. A second transceiver of the RFID tag is controlled so that the second transceiver communicates with the second reader at least during the periods when the first transceiver is not in communication with the first reader. The RFID tag may also have a battery, a switch coupling the battery to at least the first transceiver, and a controller that operates the switch in a duty cycle such that power is provided by the battery to the first transceiver during ON times of the duty cycle and such that power from the battery to the first transceiver is interrupted during OFF times of the duty cycle.
摘要翻译：在RFID标签与第一和第二读取器之间传送信息。控制RFID标签的第一收发器，使得第一收发器与第一读取器通信，并且使得第一收发器具有比第一收发器处于通信时具有比第一收发器不与第一读取器通信的基本上更长的周期与第一读者。控制RFID标签的第二收发器，使得第二收发器至少在第一收发器不与第一读取器通信的时段期间与第二读取器通信。 RFID标签还可以具有电池，将电池耦合到至少第一收发器的开关以及以占空比操作开关的控制器，使得在开启ON时间期间电池向第一收发器提供电力并且使得在占空比的OFF时间期间从电池到第一收发器的电力中断。

3. 发明授权

US07044387B2 RFID tag and communication protocol for long range tag communications and power efficiency 失效
标题翻译： RFID标签和通信协议，用于远程标签通信和电源效率
公开(公告)号：US07044387B2
公开(公告)日：2006-05-16
申请号：US10235695
申请日：2002-09-05
申请人： Robert C. Becker , David W. Meyers , Sabera Kazi
发明人： Robert C. Becker , David W. Meyers , Sabera Kazi
IPC分类号： G06K19/06
CPC分类号： G06K7/10297 , G06K7/0008
摘要： An RFID tag has a frequency agile RF transceiver that transmits data from the RFID tag to a reader and a direct sequence spread spectrum RF receiver that receives communications from the reader. Messages between the reader and the RFID tag are divided into frames, and each frame contains a frame header transmitted by the reader and at least one time slot containing data transmitted by the RFID tag. The frame header contains a hop sequence and a frequency in a hop sequence to be used by the RFID tag in transmitting data to the reader.
摘要翻译： RFID标签具有频率敏捷RF收发器，其将数据从RFID标签传送到读取器，以及从读取器接收通信的直接序列扩频RF接收器。读取器和RFID标签之间的消息被分成帧，并且每个帧包含由读取器发送的帧标题和包含由RFID标签发送的数据的至少一个时隙。帧头包含在RFID标签向读取器发送数据时使用的跳频序列和跳频序列中的频率。

4. 发明授权

US07401740B2 RFID tag and communication protocol for long range tag communications and power efficiency 失效
标题翻译： RFID标签和通信协议，用于远程标签通信和电源效率
公开(公告)号：US07401740B2
公开(公告)日：2008-07-22
申请号：US11373432
申请日：2006-03-09
申请人： Robert C. Becker , David W. Meyers , Sabera Kazi
发明人： Robert C. Becker , David W. Meyers , Sabera Kazi
IPC分类号： G06K19/00
CPC分类号： G06K7/10297 , G06K7/0008
摘要： An RFID tag has a frequency agile RF transceiver that transmits data from the RFID tag to a reader and a direct sequence spread spectrum RF receiver that receives communications from the reader. Messages between the reader and the RFID tag are divided into frames, and each frame contains a frame header transmitted by the reader and at least one time slot containing data transmitted by the RFID tag. The frame header contains a hop sequence and a frequency in a hop sequence to be used by the RFID tag in transmitting data to the reader.
摘要翻译： RFID标签具有频率敏捷RF收发器，其将数据从RFID标签传送到读取器，以及从读取器接收通信的直接序列扩频RF接收器。读取器和RFID标签之间的消息被分成帧，并且每个帧包含由读取器发送的帧标题和包含由RFID标签发送的数据的至少一个时隙。帧头包含在RFID标签向读取器发送数据时使用的跳频序列和跳频序列中的频率。

5. 发明授权

US07477707B2 Computationally efficient demodulation for differential phase shift keying 失效
标题翻译：差分相移键控的计算有效解调
公开(公告)号：US07477707B2
公开(公告)日：2009-01-13
申请号：US10615880
申请日：2003-07-10
申请人： Sabera Kazi , Robert C. Becker
发明人： Sabera Kazi , Robert C. Becker
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L27/2332 , H04L7/042 , H04L2027/003 , H04L2027/0085
摘要： A DPSK demodulator demodulates DPSK signals in a computationally efficient manner to reduce the power requirements of the DPSK demodulator. A DPSK signal is received, digitized, converted to its in-phase (I) and quadrature (Q) components and filtered to remove noise. The I and Q components are processed to determine a relative phase and frequency offset. The phase is adjusted using the frequency offset. The adjusted phase is converted to an absolute phase, which is then mapped to a symbol representative of one or more bits of data.
摘要翻译： DPSK解调器以计算有效的方式解调DPSK信号，以降低DPSK解调器的功率需求。 DPSK信号被接收，数字化，转换成其同相（I）和正交（Q）分量并进行滤波以去除噪声。处理I和Q分量以确定相对相位和频率偏移。使用频率偏移调整相位。调整后的相位被转换为绝对相位，然后映射到表示一个或多个数据位的符号。

6. 发明申请

US20060108421A1 RFID tag having multiple transceivers 审中-公开
标题翻译： RFID标签具有多个收发器
公开(公告)号：US20060108421A1
公开(公告)日：2006-05-25
申请号：US11328922
申请日：2006-01-10
申请人： Robert Becker , David Meyers , Sabera Kazi
发明人： Robert Becker , David Meyers , Sabera Kazi
IPC分类号： G06K7/08 , G06K19/06
CPC分类号： G06K19/0705 , G06K19/0707 , G06K19/0712 , G06K19/0723
摘要： Information is communicated between an RFID tag and first and second readers. A first transceiver of the RFID tag is controlled so that the first transceiver communicates with the first reader and so that the first transceiver has substantially longer periods during which the first transceiver is not in communication with the first reader than when the first transceiver is in communication with the first reader. A second transceiver of the RFID tag is controlled so that the second transceiver communicates with the second reader at least during the periods when the first transceiver is not in communication with the first reader. The RFID tag may also have a battery, a switch coupling the battery to at least the first transceiver, and a controller that operates the switch in a duty cycle such that power is provided by the battery to the first transceiver during ON times of the duty cycle and such that power from the battery to the first transceiver is interrupted during OFF times of the duty cycle.
摘要翻译：在RFID标签与第一和第二读取器之间传送信息。控制RFID标签的第一收发器，使得第一收发器与第一读取器通信，并且使得第一收发器具有比第一收发器处于通信时具有比第一收发器不与第一读取器通信的基本上更长的周期与第一读者。控制RFID标签的第二收发器，使得第二收发器至少在第一收发器不与第一读取器通信的时段期间与第二读取器进行通信。 RFID标签还可以具有电池，将电池耦合到至少第一收发器的开关以及以占空比操作开关的控制器，使得在开启ON时间期间电池向第一收发器提供电力并且使得在占空比的OFF时间期间从电池到第一收发器的电力中断。

7. 发明授权

US07274676B2 Burst-mode weighted sender scheduling for ad-hoc wireless medium access control protocols 有权
标题翻译：用于ad-hoc无线介质访问控制协议的突发模式加权发送器调度
公开(公告)号：US07274676B2
公开(公告)日：2007-09-25
申请号：US10619089
申请日：2003-07-14
申请人： Ionut E. Cardei , Sabera Kazi
发明人： Ionut E. Cardei , Sabera Kazi
IPC分类号： H04B7/00 , H04B7/212 , H04Q7/00 , H04Q7/24 , H04L12/28
CPC分类号： H04W72/1257 , H04W84/18
摘要： A method of scheduling transmissions in an ad-hoc wireless network is invoked when a frame is received by a medium access control layer of a receiving node. The method includes determining a next node to transmit based on a schedule and a bandwidth allocation. When the next node is different from a node that sent the received frame, the current burst is terminated and the next node is invited to transmit the next burst. When the next node is the node that sent the received frame, the current burst is allowed to continue to be transmitted. Such an approach is suitable for use in applications that require transmissions with a specified quality of service (QOS).
摘要翻译：当由接收节点的介质访问控制层接收到帧时，调用在自组织无线网络中调度传输的方法。该方法包括基于调度和带宽分配确定要发送的下一个节点。当下一个节点与发送接收到的帧的节点不同时，终止当前突发，并且邀请下一个节点发送下一个突发。当下一个节点是发送接收到的帧的节点时，允许当前突发继续发送。这种方法适用于需要具有指定服务质量（QOS）的传输的应用。

8. 发明申请

US20060211413A1 Wireless data link capacity 有权
标题翻译：无线数据链路容量
公开(公告)号：US20060211413A1
公开(公告)日：2006-09-21
申请号：US11059024
申请日：2005-02-14
申请人： Kartik Ariyur , Sabera Kazi , Chandrika Bommalingaiahnapallya
发明人： Kartik Ariyur , Sabera Kazi , Chandrika Bommalingaiahnapallya
IPC分类号： H04Q7/20
CPC分类号： H04W16/18 , H04W84/18
摘要： Wireless data links between mobile vehicles are optimized by positioning the mobile vehicles in default locations, creating a wireless data link between the vehicles, and measuring the initial capacity of the wireless data link. An extremum-seeking algorithm is then performed, in which the mobile vehicles are moved locally around their default locations, and the resulting changes in capacity of the wireless data link are measured. The algorithm mathematically determines, based on the measured changes in capacity of the wireless data link, optimum locations at which, when the mobile vehicles are positioned there, the capacity of the wireless data link reaches a local maximum value. The mobile vehicles are then moved to the optimum locations.
摘要翻译：通过将移动车辆定位在默认位置，在车辆之间建立无线数据链路以及测量无线数据链路的初始容量来优化移动车辆之间的无线数据链路。然后执行极值寻求算法，其中移动车辆在其默认位置周围移动，并且测量所得到的无线数据链路容量的变化。该算法基于测量的无线数据链路容量的变化来数学地确定最佳位置，当移动车辆位于那里时，无线数据链路的容量达到局部最大值。然后将移动车辆移动到最佳位置。

9. 发明申请

US20060175408A1 RFID tag and communication protocol for long range tag communications and power efficiency 失效
公开(公告)号：US20060175408A1
公开(公告)日：2006-08-10
申请号：US11373432
申请日：2006-03-09
申请人： Robert Becker , David Meyers , Sabera Kazi
发明人： Robert Becker , David Meyers , Sabera Kazi
IPC分类号： G06K7/08 , G05B23/02
CPC分类号： G06K7/10297 , G06K7/0008
摘要： An RFID tag has a frequency agile RF transceiver that transmits data from the RFID tag to a reader and a direct sequence spread spectrum RF receiver that receives communications from the reader. Messages between the reader and the RFID tag are divided into frames, and each frame contains a frame header transmitted by the reader and at least one time slot containing data transmitted by the RFID tag. The frame header contains a hop sequence and a frequency in a hop sequence to be used by the RFID tag in transmitting data to the reader.

10. 发明授权

US07840144B2 Coherent optical transceiver and coherent communication system and method for satellite communications 有权
标题翻译：相干光收发机和相干通信系统及卫星通信方法
公开(公告)号：US07840144B2
公开(公告)日：2010-11-23
申请号：US11867351
申请日：2007-10-04
申请人： Isaac Shpantzer , Sabera Kazi
发明人： Isaac Shpantzer , Sabera Kazi
IPC分类号： H04B10/06
CPC分类号： H04B10/118 , H04B10/40 , H04B10/61
摘要： An optical transceiver is provided for optical communications with additive noise compensation. The system and method are disclosed for the additive noise cancellation, which is typically a vibration noise, caused by moving platform, where the transceiver is located. The transceiver comprises an additive noise sensor and a digital signal processing (DSP) unit which implements variable step size technique to adjust the filter weight in the least square estimate of the noise signal. In the preferred embodiment the digital signal processing is applied both at the transmission and the receiving side. The optical device is packed for ground-satellite and inter-satellite communications applications with resistance to high-energy X-rays, gamma rays and cosmic rays. The optical device sustains its operation characteristics under launch load.
摘要翻译：提供光收发器用于具有附加噪声补偿的光通信。公开了用于附加噪声消除的系统和方法，其通常是由收发器所在的移动平台引起的振动噪声。收发器包括一个附加噪声传感器和一个数字信号处理（DSP）单元，它实现可变步长技术，以调整噪声信号的最小二乘估计中的滤波器权重。在优选实施例中，在传输和接收侧都应用数字信号处理。该光学装置用于地面卫星和卫星间通信应用，具有耐高能X射线，γ射线和宇宙射线的能力。光学装置在发射载荷下维持其运行特性。

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