公开(公告)号：US5784695A

公开(公告)日：1998-07-21

申请号：US647506

申请日：1996-05-14

申请人： Eric L. Upton ,  Robert M. Ward, Jr.

发明人： Eric L. Upton ,  Robert M. Ward, Jr.

IPC分类号： H04L1/02 ,  H04B7/185 ,  H04B7/195 ,  H04W28/04 ,  H04W36/00 ,  H04W36/06 ,  H04W48/08 ,  H04W76/02 ,  H04W84/06 ,  H04W88/12 ,  H04Q7/20

CPC分类号： H04B7/18541 ,  H04W36/0083 ,  H04W36/06 ,  H04W48/08 ,  H04W76/02 ,  H04W84/06 ,  H04W88/12

摘要： A method and apparatus are provided for controlling mobile and base stations (14 and 16) during satellite (12) based telecommunications to perform scheduled handovers between two communications channels (26 and 27). The base station (16) determines when a handover will be necessary. Once determined, the base station (16) generates a handover scheduling command (node #4) which includes a scheduled handover time representing a time in the future at which the handover will occur. The handover scheduling command is transmitted over the first channel to the mobile station (14). Upon receipt of the handover scheduling command, the mobile station (14) performs steps necessary to establish a second communications link over a second channel (27), prior to the scheduled handover time. At the scheduled handover time (node #21), the mobile and base stations (14 and 16) have established the second communications link on the second channel (27). To establish the second channel the mobile station calculations of the second channels frequency, timing offset and power level (node #11). By using a scheduled handover process, the mobile and base stations (14 and 16) avoid the production of interference and breaks within a conversation transmitted therebetween.

摘要翻译： 提供了一种用于在基于卫星（12）的电信期间控制移动和基站（14和16）以在两个通信信道（26和27）之间执行预定切换的方法和装置。 基站（16）确定何时需要切换。 一旦确定，基站（16）产生切换调度命令（节点＃4），该切换调度命令（节点＃4）包括表示将要进行切换的时间的调度切换时间。 切换调度命令通过第一信道发送到移动站（14）。 在接收到切换调度命令之后，在调度的切换时间之前，移动站（14）执行在第二信道（27）上建立第二通信链路所必需的步骤。 在预定的切换时间（节点＃21），移动台和基站（14和16）已经在第二个信道（27）上建立了第二个通信链路。 为了建立第二信道，移动台计算第二信道频率，定时偏移和功率电平（节点＃11）。 通过使用预定的切换过程，移动台和基站（14和16）避免产生干扰，并且在它们之间传输的对话中断。

公开(公告)号：US06690310B1

公开(公告)日：2004-02-10

申请号：US10366234

申请日：2003-02-13

申请人： Eric L. Upton

发明人： Eric L. Upton

IPC分类号： H03M106

CPC分类号： H03M1/0604 ,  H03M1/44

摘要： In an analog-to-digital converter (100), a method and apparatus compare (302) an analog input signal (102) with a reference signal (108) to generate a decision signal (110), and sum (304) the analog input signal with a control value (130) whose magnitude is determined by an accumulated value (126), and whose sign is determined by the decision signal, thereby generating an error signal (114). The method and apparatus further calculate (306) a correlation value (118) between the error signal and the decision signal, and accumulate (308) the correlation value to produce the accumulated value, thereby adaptively compensating for an inaccuracy in the A/D converter.

摘要翻译： 在模拟数字转换器（100）中，一种方法和装置将模拟输入信号（102）与参考信号（108）进行比较（302）以产生判决信号（110），并且（304）模拟 输入信号具有其大小由累加值（126）确定的控制值（130），并且其符号由判定信号确定，从而产生误差信号（114）。 所述方法和装置进一步计算（306）误差信号与判定信号之间的相关值（118），并累积（308）相关值以产生累加值，从而自适应地补偿A / D转换器中的不准确性 。

公开(公告)号：US06529674B2

公开(公告)日：2003-03-04

申请号：US09998545

申请日：2001-11-29

申请人： Richard A. Fields ,  Bruce A. Ferguson ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton

发明人： Richard A. Fields ,  Bruce A. Ferguson ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton

IPC分类号： G02B600

CPC分类号： G02F3/00 ,  G02F1/3515 ,  G02F1/3523

摘要： An optical device for use with an optical input beam comprising an optical thresholding device positioned along an optical path defined by the propagation direction of the optical input beam. If the combined intensity of the optical input beam and a control beam exceeds a threshold level, the optical beam passes through the thresholding device. Preferably, the optical thresholding device is a saturable absorber. When the device is configured as an optical comparator, the intensity of the optical input beam exceeds the threshold level and the thresholding device saturates and turns transparent so that the control beam passes through the thresholding device as an optical indicator beam. When the device is configured as an optical signal attenuator and the intensity of the optical input signal is negligible compared to that of the control beam, the combined intensity of the beams does not saturate the thresholding device.

摘要翻译： 一种用于光输入光束的光学装置，包括沿着由光输入光束的传播方向限定的光路定位的光阈值设备。 如果光输入光束和控制光束的组合强度超过阈值电平，则光束通过阈值设备。 优选地，光阈值设备是可饱和吸收器。 当设备被配置为光学比较器时，光输入光束的强度超过阈值电平，并且阈值设备饱和并变透明，使得控制光束作为光指示器光束通过阈值设备。 当器件被配置为光信号衰减器并且光输入信号的强度与控制光束的强度相比可忽略时，光束的组合强度不会使阈值设备饱和。

公开(公告)号：US06327399B1

公开(公告)日：2001-12-04

申请号：US09444977

申请日：1999-11-22

申请人： Richard A. Fields ,  Bruce A. Ferguson ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton

发明人： Richard A. Fields ,  Bruce A. Ferguson ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton

IPC分类号： G02B626

CPC分类号： G02F3/00 ,  G02F1/3515 ,  G02F1/3523

摘要： An optical device for use with an optical input beam comprises and optical thresholding device having a predetermined threshold level, and is positioned along an optical path defined by the propagation direction of the optical input beam. A source generates a control beam through the optical thresholding device, wherein if the combined intensity of the optical input beam and the control beam is large enough to exceed the threshold level of the thresholding device, the optical beam passes through he thresholding device. The thresholding device attenuates the optical beam as it passes therethrough. In a preferred embodiment, the optical thresholding device is a saturable absorber. When the device is configured as an optical comparator, the intensity of the optical input beam is large enough to exceed the threshold level of the thresholding device, the thresholding device saturates and turns transparent so that the control beam passes through the thresholding device as an optical indicator beam and the optical input beam passes through the thresholding device. When configured as an optical signal attenuator and the intensity of the optical input signal is negligible compared to that of the control beam the combined intensity of the optical input signal and the control beam do not saturate the thresholding device.

摘要翻译： 用于光输入光束的光学装置包括具有预定阈值电平的光阈值装置，并且沿着由光输入光束的传播方向限定的光路定位。 源通过光阈值设备产生控制光束，其中如果光输入光束和控制光束的组合强度足够大以超过阈值设备的阈值电平，则光束通过阈值设备。 阈值装置在光束通过时衰减光束。 在优选实施例中，光阈值设备是可饱和吸收器。 当该设备被配置为光学比较器时，光输入光束的强度足够大以超过阈值设备的阈值电平，阈值设备饱和并变透明，使得控制光束作为光学器件通过阈值设备 指示光束和光输入光束通过阈值设备。 配置为光信号衰减器时，光输入信号的强度与控制光束的强度相比可忽略不计，光输入信号和控制光束的组合强度不会使阈值设备饱和。

公开(公告)号：US6167024A

公开(公告)日：2000-12-26

申请号：US42928

申请日：1998-03-17

申请人： Eric L. Upton ,  Michael G. Wickham ,  Martin P. Smith

发明人： Eric L. Upton ,  Michael G. Wickham ,  Martin P. Smith

IPC分类号： G02B6/34 ,  H04J14/00 ,  H04B7/216

CPC分类号： H04J14/005 ,  H04J14/007

摘要： An orthogonal pilot tone servo controller provides a servo control loop for each tap in a delay line processor where each servo acquires its independence from the other tap's servos utilizing an orthogonal code set modulated on top of the existing tap values. The orthogonal codes are attenuated in amplitude such that the code sets are transparent to the processed signals of interest, but the code's length enables each tap's servo controller to independently recover the tap's state from the aggregate of signals and codes through processing gain realized in each loop's recovery circuit. A plurality of taps can be thus be servo controlled simultaneously, providing for extremely wide bandwidth processes which can be performed accurately with digital controls.

摘要翻译： 正交导频音调伺服控制器为延迟线处理器中的每个抽头提供伺服控制回路，其中每个伺服器利用在现有抽头值顶部调制的正交码集来获取其与另一抽头的伺服的独立性。 正交码在幅度上衰减，使得码集对于所处理的感兴趣的信号是透明的，但是代码的长度使得每个抽头的伺服控制器能够从信号和代码的集合中独立地恢复抽头的状态，通过每个循环中实现的处理增益 恢复电路。 因此，可以同时伺服控制多个抽头，从而提供可以用数字控制精确地执行的极宽带宽处理。

公开(公告)号：US6160504A

公开(公告)日：2000-12-12

申请号：US343733

申请日：1999-06-30

申请人： Richard A. Fields ,  Juan C. Carillo, Jr. ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton ,  Bruce A. Ferguson

发明人： Richard A. Fields ,  Juan C. Carillo, Jr. ,  Mark Kintis ,  Elizabeth T. Kunkee ,  Lawrence J. Lembo ,  Stephen R. Perkins ,  David L. Rollins ,  Eric L. Upton ,  Bruce A. Ferguson

IPC分类号： G02F7/00 ,  H03M1/12 ,  H03M1/38 ,  H03M1/00

CPC分类号： G02F7/00 ,  H03M1/1235 ,  H03M1/38

摘要： An optical quantizer (10) that employs a chain of optical thresholding devices (16) positioned in the propagation path of an optical input beam (12) to be quantized. Each optical thresholding device (16) saturates and turns transparent if the intensity of the optical beam (12) that impinges it is above a predetermined threshold level designed into the device (16). If the input beam (12) saturates the optical thresholding device (16), the device (16) outputs an indicator signal (22) identifying the saturation. The input beam (12) propagates through the optical thresholding device (16) with some attenuation caused by the saturation, and impinges subsequent optical thresholding devices (16) in the chain. Eventually, the attenuation of the input beam (12) caused by the multiple saturations will decrease the beam intensity below the threshold level of the next optical thresholding device (16). The number of indicator signals (22) gives an indication of the intensity of the input beam (12). The optical thresholding devices (16) can provide optical or electrical indicator signals (22) depending on the type of thresholding device (16) used.

摘要翻译： 一种光量化器（10），其使用位于要被量化的光输入光束（12）的传播路径中的光阈值设备（16）链。 如果撞击它的光束（12）的强度高于设计到设备（16）中的预定阈值水平，则每个光阈值设备（16）饱和并变透明。 如果输入光束（12）饱和光学阈值设备（16），则设备（16）输出识别饱和度的指示符信号（22）。 输入光束（12）通过光阈值设备（16）以由饱和度引起的一些衰减传播，并且将后续光阈值设备（16）照射在链中。 最终，由多个饱和引起的输入光束（12）的衰减将使光束强度降低到下一个光阈值设备（16）的阈值电平以下。 指示信号（22）的数量给出了输入光束（12）的强度的指示。 光学阈值设备（16）可以根据所使用的阈值设备（16）的类型来提供光学或电子指示符信号（22）。

公开(公告)号：US6115584A

公开(公告)日：2000-09-05

申请号：US285308

申请日：1999-04-02

申请人： Donald L. Tait ,  Eric L. Upton ,  Franklin J. Bayuk

发明人： Donald L. Tait ,  Eric L. Upton ,  Franklin J. Bayuk

IPC分类号： H04B1/50 ,  H03D7/18 ,  H04B1/28 ,  H04B1/30 ,  H04B1/40 ,  H04Q7/32

CPC分类号： H03D7/18 ,  H04B1/40 ,  H04B1/28 ,  H04B1/30

摘要： A transmitter-receiver includes a transmitting circuit for providing an output by converting the frequency of a transmission signal input thereto, a receiving circuit for providing an output by converting the frequency of a received signal input thereto, and a local oscillator which generates an oscillation signal having a local oscillating frequency based on a reference signal. A local oscillator signal splitter is connected to the local oscillator and splits the oscillation signal into substantially similar transmit and receive oscillation signals each at the local oscillating frequency. The local oscillator signal splitter supplies the transmit oscillation signal to the transmitting circuit and supplies the receive oscillation signal to the receiving circuit. The transmitting circuit converts the frequency of the transmission signal in accordance with said transmit oscillation signal, and the receiving circuit converts the frequency of the received signal in accordance with the receive oscillation signal.

摘要翻译： 发射机 - 接收机包括通过转换输入的发送信号的频率来提供输出的发送电路，用于通过转换输入的接收信号的频率来提供输出的接收电路和产生振荡信号的本地振荡器 具有基于参考信号的本地振荡频率。 本地振荡器信号分离器连接到本地振荡器，并将振荡信号分成基本相似的发射和接收振荡信号，每个振荡信号在本地振荡频率处。 本地振荡器信号分离器将发送振荡信号提供给发送电路，并将接收振荡信号提供给接收电路。 发送电路根据所述发送振荡信号转换发送信号的频率，并且接收电路根据接收振荡信号转换接收信号的频率。

公开(公告)号：US6067615A

公开(公告)日：2000-05-23

申请号：US556438

申请日：1995-11-09

申请人： Eric L. Upton

发明人： Eric L. Upton

IPC分类号： G06F15/78 ,  G06F15/00

CPC分类号： G06F15/7867 ,  Y02B60/1207 ,  Y02B60/1225

摘要： A digital processor with reconfigurable architecture includes a processor input and a processor output. A library stores a plurality of related function sequences for executing a processor operation. Memory stores data as required by the function sequences. A configurable device is connected to the library and the memory and between the processor input and the processor output. The configurable device sequentially stores the function sequences from the library in a plurality of programmable gate arrays configurable by the function sequences. The configurable device reconfigures the programmable gate arrays with another of the function sequences to complete the processor operation.

摘要翻译： 具有可重构架构的数字处理器包括处理器输入和处理器输出。 库存储用于执行处理器操作的多个相关功能序列。 内存根据功能序列的要求存储数据。 可配置的设备连接到库和存储器以及处理器输入和处理器输出之间。 可配置设备顺序地将来自库的功能序列存储在可由功能序列配置的多个可编程门阵列中。 可配置设备用另一个功能序列重新配置可编程门阵列，以完成处理器的操作。

公开(公告)号：US6020847A

公开(公告)日：2000-02-01

申请号：US638066

申请日：1996-04-25

申请人： Eric L. Upton ,  Scott A. Stephens

发明人： Eric L. Upton ,  Scott A. Stephens

IPC分类号： G01S5/12 ,  G01S19/00 ,  G01S19/25 ,  H04B7/185 ,  H04Q7/34 ,  G01S5/02

CPC分类号： G01S19/00 ,  G01S5/12 ,  H04B7/1855

摘要： A method for determining the geolocation of a user terminal within a telecommunications system having a constellation of satellites which relay communications signals between earth stations and user terminals over preassigned channels. The method performs synchronization upon the telecommunications signals to calculate timing and frequency update information for the user terminals. The timing and frequency update information is also used within the earth station to calculate the geoposition of the user terminal. To do so, the earth station calculates a distance between the satellite and a user terminal based on the corresponding propagation time therebetween which is obtained from the timing information. Once the satellite to user terminal distance is obtained, a range solution line may be calculated therefrom. In addition, the frequency update information is used to calculate a Doppler solution line upon which the user terminal is positioned. Thereafter, the range and Doppler solution lines are combined to obtain points of intersection therebetween. These points of intersection represent potential geolocations of the user terminal. The earth station discriminates between these intersection points in one of several manners, such as the coverage beam spot or geographic cell assigned to the user terminal. Upon obtaining a single intersection point, the longitude and latitude of this point or output is the geolocation of the user terminal.

摘要翻译： 一种用于确定具有卫星星座的电信系统中的用户终端的地理定位的方法，其通过预先指派的信道来中继地球站和用户终端之间的通信信号。 该方法对电信信号执行同步，以计算用户终端的定时和频率更新信息。 定时和频率更新信息也在地球站内使用，以计算用户终端的地理位置。 为了这样做，地球站基于从定时信息获得的相应的传播时间来计算卫星和用户终端之间的距离。 一旦获得卫星到用户终端距离，可以从其计算范围解决线。 此外，频率更新信息用于计算用户终端所在的多普勒解决线。 此后，组合范围和多普勒溶液线以获得它们之间的交点。 这些交叉点代表用户终端的潜在地理位置。 地球站以几种方式之一区分这些交点，例如分配给用户终端的覆盖波束点或地理小区。 在获得单个交叉点时，该点或输出的经度和纬度是用户终端的地理位置。

公开(公告)号：US07283586B2

公开(公告)日：2007-10-16

申请号：US10430766

申请日：2003-05-06

申请人： Eric L. Upton

发明人： Eric L. Upton

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03019 ,  H04L2025/03617

摘要： A correlative error detection system (60) for a signal equalizer (10) that corrects a distorted communications signal. The detection system (60) correlates a sequence of bits in a signal from an FFE and/or a DFE processor (12, 14) with a predetermined sequence of correlation values. The detection system (60) includes a summing network (66) that sums the correlated signals. If the sequence of signal bits matches the sequence of correlation values, then the summed correlated signal will include a signal maxima. A peak detector (76) detects and holds the signal maxima so that a slow speed weight computer (40) can process the signal values to set weight values in the processors (12, 14). By knowing how often the sequence of bits that match the correlative values should occur in a random bit stream for an undistorted signal, the weight computer (40) can set the weight values to provide that magnitude of the bit sequence.

摘要翻译： 一种用于校正失真通信信号的信号均衡器（10）的相关误差检测系统（60）。 检测系统（60）将来自FFE和/或DFE处理器（12,14）的信号中的比特序列与预定的相关值序列相关联。 检测系统（60）包括对相关信号求和的求和网络（66）。 如果信号比特序列与相关值序列匹配，则相加的相关信号将包括信号最大值。 峰值检测器（76）检测和保持信号最大值，使得慢速权重计算机（40）可以处理信号值以设置处理器（12,14）中的权重值。 通过知道匹配相关值的比特序列应该在用于未失真信号的随机比特流中出现，权重计算机（40）可以设置加权值以提供比特序列的大小。