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1. 发明授权

US08923444B1 Decoding a communication signal that contains analog pulses with exponentially-shaped leading edges 有权
标题翻译：对包含具有指数形状的前沿的模拟脉冲的通信信号进行解码
公开(公告)号：US08923444B1
公开(公告)日：2014-12-30
申请号：US14319356
申请日：2014-06-30
申请人： Board of Regents of the University of Texas System
发明人： Robert H. Flake
IPC分类号： H03D1/24 , H04L27/06
CPC分类号： H04L27/06 , H04B1/02 , H04B1/06 , H04B1/7163 , H04B1/7174 , H04B3/02 , H04B10/25137 , H04B10/524 , H04L25/03834
摘要： A receiver for decoding a communication signal is disclosed. The receiver includes an input port and a filter. The input port receives the communication signal from a communication medium. The communication signal comprises a sequence of symbols. Each symbol of the symbol sequence is an analog pulse that has a leading edge of exponential shape. The exponential shape has an exponential growth parameter value that has been selected from values α0 and α1, which are distinct positive values. For each symbol of the symbol sequence, the exponential growth parameter value for the leading edge of the symbol has been selected based on a corresponding bit from a stream of information bits. The filter receives the communication signal from the input port and filters the communication signal to obtain an output signal. The transfer function of the filter has one or more zeros at α0.
摘要翻译：公开了一种用于解码通信信号的接收机。接收机包括输入端口和滤波器。输入端口从通信介质接收通信信号。通信信号包括符号序列。符号序列的每个符号是具有指数形状的前沿的模拟脉冲。指数形状具有从值α0和α1中选出的指数增长参数值，它们是不同的正值。对于符号序列的每个符号，已经基于来自信息比特流的相应比特来选择符号的前沿的指数生长参数值。滤波器从输入端口接收通信信号，并对通信信号进行滤波以获得输出信号。滤波器的传递函数在α0处有一个或多个零点。

2. 发明授权

US09831972B2 Synchronization of clocks and sensors via exponential-based TDR and communication of exponential-null pulse sequences 有权
公开(公告)号：US09831972B2
公开(公告)日：2017-11-28
申请号：US15388007
申请日：2016-12-22
申请人： Board of Regents of the University of Texas System
发明人： Robert H. Flake
IPC分类号： H04L27/00 , H04J3/06 , H04B1/02 , H04B10/524 , H04B3/02 , H04L25/03 , H04B1/06 , H04L27/06
CPC分类号： H04J3/0644 , G04G3/00 , G06F1/04 , H04B1/02 , H04B1/06 , H04B3/02 , H04B10/524 , H04L25/03834 , H04L27/06
摘要： A method for establishing synchronization between a master clock and a slave clock. A transmitter near the master clock transmits a pulse sequence onto an electrical cable that extends between the transmitter and a receiver near the slave clock. Each pulse of the pulse sequence is either a null pulse (i.e., a zero pulse) or a pulse of exponential kind, depending a corresponding bit in a bit sequence. Each pulse of exponential kind has a leading edge pf exponential shape corresponding to the exponential coefficient α. The bit sequence represents the sum of (a) a current timestamp of the master clock and (b) an adjustment value that represents the one-way time of-flight of the exponentially shaped leading edge through the cable. The receiver recovers the bit sequence from the pulse sequence, and loads the bit sequence into the slave clock, to establish synchronization.

3. 发明申请

US20170187480A1 Synchronization of Clocks and Sensors via Exponential-Based TDR and Communication of Exponential-Null Pulse Sequences 有权
公开(公告)号：US20170187480A1
公开(公告)日：2017-06-29
申请号：US15388007
申请日：2016-12-22
申请人： Board of Regents of the University of Texas System
发明人： Robert H. Flake
IPC分类号： H04J3/06 , H04L12/26
CPC分类号： H04J3/0644 , G04G3/00 , G06F1/04 , H04B1/02 , H04B1/06 , H04B3/02 , H04B10/524 , H04L25/03834 , H04L27/06
摘要： A method for establishing synchronization between a master clock and a slave clock. A transmitter near the master clock transmits a pulse sequence onto an electrical cable that extends between the transmitter and a receiver near the slave clock. Each pulse of the pulse sequence is either a null pulse (i.e., a zero pulse) or a pulse of exponential kind, depending a corresponding bit in a bit sequence. Each pulse of exponential kind has a leading edge pf exponential shape corresponding to the exponential coefficient α. The bit sequence represents the sum of (a) a current timestamp of the master clock and (b) an adjustment value that represents the one-way time of-flight of the exponentially shaped leading edge through the cable. The receiver recovers the bit sequence from the pulse sequence, and loads the bit sequence into the slave clock, to establish synchronization.

4. 发明授权

US09331842B2 Time synchronization and controlled asynchronization of remote trigger signals 有权
标题翻译：远程触发信号的时间同步和受控异步
公开(公告)号：US09331842B2
公开(公告)日：2016-05-03
申请号：US14862515
申请日：2015-09-23
申请人： BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
发明人： Robert H. Flake
IPC分类号： H04L7/00 , H04B17/364
CPC分类号： H04B17/364 , G01R31/088 , H04B3/02
摘要： A mechanism is disclosed for transmitting pulses onto respective cables so that the pulses arrive at the remote ends of the respective cables in synchronized (or controllably asynchronized) fashion. First, the round-trip time of flight of each cable is measured using speedy delivery pulses, i.e., pulses whose leading edges have exponential shape. Second, a calculation is performed to determine the input delay(s) between the pulses that would produce desired output delay(s). For example, it may be desirable that the pulses arrive at the respective remote ends at the same time, in which case the desired output delay(s) is (are) zero. Third, the same speedy delivery pulses are transmitted onto the respective cables so that the interpulse delay(s) conform to the computed input delay(s). Thus, the desired output delay(s) are achieved at the remote ends of the cables.
摘要翻译：公开了用于将脉冲发送到相应电缆上的机构，使得脉冲以同步（或可控地不同步）的方式到达各个电缆的远端。首先，使用快速传送脉冲，即其前沿具有指数形状的脉冲来测量每根电缆的往返时间。第二，执行计算以确定将产生期望的输出延迟的脉冲之间的输入延迟（s）。例如，可能期望脉冲同时到达相应的远端，在这种情况下，期望的输出延迟为零。第三，相同的快速传送脉冲被传送到相应的电缆上，使得脉冲间延迟符合所计算的输入延迟。因此，在电缆的远端实现期望的输出延迟。

5. 发明申请

US20160087785A1 TIME SYNCHRONIZATION AND CONTROLLED ASYNCHRONIZATION OF REMOTE TRIGGER SIGNALS 有权
标题翻译：远程触发信号的时间同步和控制异步
公开(公告)号：US20160087785A1
公开(公告)日：2016-03-24
申请号：US14862515
申请日：2015-09-23
申请人： BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
发明人： Robert H. Flake
IPC分类号： H04L7/00 , H04B17/364
CPC分类号： H04B17/364 , G01R31/088 , H04B3/02
摘要： A mechanism is disclosed for transmitting pulses onto respective cables so that the pulses arrive at the remote ends of the respective cables in synchronized (or controllably asynchronized) fashion. First, the round-trip time of flight of each cable is measured using speedy delivery pulses, i.e., pulses whose leading edges have exponential shape. Second, a calculation is performed to determine the input delay(s) between the pulses that would produce desired output delay(s). For example, it may be desirable that the pulses arrive at the respective remote ends at the same time, in which case the desired output delay(s) is (are) zero. Third, the same speedy delivery pulses are transmitted onto the respective cables so that the interpulse delay(s) conform to the computed input delay(s). Thus, the desired output delay(s) are achieved at the remote ends of the cables.
摘要翻译：公开了用于将脉冲发送到相应电缆上的机构，使得脉冲以同步（或可控地不同步）的方式到达各个电缆的远端。首先，使用快速传送脉冲，即其前沿具有指数形状的脉冲来测量每根电缆的往返时间。第二，执行计算以确定将产生期望的输出延迟的脉冲之间的输入延迟（s）。例如，可能期望脉冲同时到达相应的远端，在这种情况下，期望的输出延迟为零。第三，相同的快速传送脉冲被传送到相应的电缆上，使得脉冲间延迟符合所计算的输入延迟。因此，在电缆的远端实现期望的输出延迟。

6. 发明授权

US08867657B1 Communication using analog pulses having exponentially-shaped leading edges 有权
标题翻译：使用具有指数形状的前沿的模拟脉冲进行通信
公开(公告)号：US08867657B1
公开(公告)日：2014-10-21
申请号：US14182082
申请日：2014-02-17
申请人： Board of Regents of the University of Texas System
发明人： Robert H. Flake
IPC分类号： H04L27/00 , H04B1/02 , H04B1/06 , H04B1/7163 , H04B10/524 , H04B10/2513 , H04B1/717
CPC分类号： H04L27/06 , H04B1/02 , H04B1/06 , H04B1/7163 , H04B1/7174 , H04B3/02 , H04B10/25137 , H04B10/524 , H04L25/03834
摘要： A first transmitter transmits symbols. The leading edge of each symbol has the form Djexp{αjt}, where Dj is real, where αj is selected from N possible values based on a current group of bits. The receiver has N filters whose transfer functions correspond respectively to the N possible values. The filter outputs are used to recover the group of bits. A second transmitter transmits an exponential symbol or a zero symbol depending on a current bit to be transmitted. The zero symbol has zero amplitude over the symbol period. The corresponding receiver applies threshold detection to estimate the transmitted bits. A third transmitter transmits a sequence of analog pulses with known interpulse time separation(s). The pulse sequence reflects from a moving object. A receiver captures the reflected pulse sequence. The interpulse separation(s) of the reflect pulse sequence is used to determine the radial velocity of the object.
摘要翻译：第一发射机发送符号。每个符号的前沿具有形式Djexp {αjt}，其中Dj是实数，其中αj基于当前组的N个可能值来选择。接收机具有N个滤波器，其传递函数分别对应于N个可能值。滤波器输出用于恢复位组。第二发射机根据要发送的当前比特发送指数符号或零符号。零符号在符号周期内具有零幅度。相应的接收机应用阈值检测来估计发送的比特。第三发射器发射具有已知的脉冲间隔的一系列模拟脉冲。脉冲序列从移动物体反射。接收器捕获反射脉冲序列。反射脉冲序列的脉冲间隔用于确定物体的径向速度。

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