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11. 发明授权

US5497397A Parallel dataword modulation scheme 失效
标题翻译：并行数据字调制方案
公开(公告)号：US5497397A
公开(公告)日：1996-03-05
申请号：US267346
申请日：1994-06-29
申请人： John E. Hershey , Gary J. Saulnier
发明人： John E. Hershey , Gary J. Saulnier
IPC分类号： H04L27/26 , H04L27/00
CPC分类号： H04L27/2602
摘要： Data words are transmitted over a radio channel with a novel modulation scheme which transmits data in parallel. An entire data word is modulated by separating a carrier frequency band into a number of discrete `tones`. Tone T.sub.1 is set to a zero phase shift in order to provide timing in synchronization of the signal. The remaining tones are phase shifted according to a predetermined convention, thereby encoding the bits of the data word. The phase shifts for all tones comprises a spectrum which is transmitted to a receiver simultaneously. A receiver monitors tone T.sub.1 for zero phase shifts to provide synchronization of the signal. The remaining tones are analyzed for their phase shift to provide bits which are assembled into a transmitted data word. Since the bits are transmitted in parallel as the data word, as opposed to conventional modulation schemes, the throughput is increased.
摘要翻译：数据字通过无线电信道通过并行传输数据的新型调制方案传输。通过将载波频带分离成多个离散的“音调”来调制整个数据字。音调T1被设置为零相移，以提供信号同步的定时。剩余的音调根据预定的约定相移，从而对数据字的比特进行编码。所有音调的相移包括同时发送到接收机的频谱。接收机监视音调T1用于零相移以提供信号的同步。分析剩余的音调以进行相移，以提供组合成传输数据字的位。由于与传统调制方案相反，这些比特作为数据字并行发送，因此增加了吞吐量。

12. 发明授权

US5481535A Datagram message communication service employing a hybrid network 失效
标题翻译：采用混合网络的数据报消息通信业务
公开(公告)号：US5481535A
公开(公告)日：1996-01-02
申请号：US267348
申请日：1994-06-29
申请人： John E. Hershey
发明人： John E. Hershey
IPC分类号： H04L12/56
CPC分类号： H04W40/28 , H04L1/1877 , H04L2001/0093 , H04L45/32 , H04W4/06 , H04W8/26
摘要： A highly fault tolerant system for datagram communication of information in the form of a message packet employs a distributed network of transmitter/receivers `transceivers`, which interact with `bridge transceivers` which are transceivers connected to a wired network, and wired nodes each having a unique identification ("ID") number. An initiating unit, which may be a transceiver, bridge transceiver or wired node, creates a message packet having an ID of an intended destination unit. If initiated from a transceiver, the message packet finds its way to a wired network by broadcasting the message packet to local transceivers. The transceivers determine valid message packets which have not expired, not been received before and were transmitted without errors. If the message packet is valid and the transceiver ID does not match its internal ID, the transceiver broadcasts the valid message packet to other local transceivers. The transceivers which receive the message packet repeat the process. The message then finds its way to a bridge transceiver connected to a wired network. A `NODE LOC` is embedded in the message packet identifying a closest wired node. The message is routed through the wired network to the wired node and then transmitted as described above to a destination unit by radio signals.
摘要翻译：消息分组形式的信息的数据报通信的高度容错系统采用发射机/接收机收发机的分布式网络，其与作为连接到有线网络的收发器的“桥接收机”进行交互，每个有线节点具有唯一身份证件（“ID”）号码。可以是收发器，桥收发器或有线节点的发起单元创建具有预期目的地单元的ID的消息分组。如果从收发器发起，消息包通过向本地收发器广播消息包来找到有线网络的方式。收发器确定没有过期的有效消息分组，未被接收并且没有错误地传送。如果消息包有效并且收发器ID与其内部ID不匹配，则收发器将有效的消息包广播到其他本地收发器。接收消息包的收发器重复该过程。然后，该消息找到连接到有线网络的桥收发器的方式。 “NODE LOC”嵌入在标识最近有线节点的消息包中。消息通过有线网络路由到有线节点，然后通过无线电信号如上所述地传送到目的地单元。

13. 发明授权

US5166953A Technique for frequency-hopped spread spectrum communications 失效
标题翻译：跳频扩频通信技术
公开(公告)号：US5166953A
公开(公告)日：1992-11-24
申请号：US605714
申请日：1990-10-30
申请人： John E. Hershey , Amer A. Hassan , Charles M. Puckette
发明人： John E. Hershey , Amer A. Hassan , Charles M. Puckette
IPC分类号： H04B1/7136 , H04B1/715 , H04K3/00
CPC分类号： H04B1/7136 , H04B1/715 , H04K3/25 , H04K3/827 , H04B2001/71362 , H04B2001/7152
摘要： A countermeasure to a partial-band follower jammer for frequency hopping spread spectrum communication systems employs an M-ary orthogonal frequency shift keyed (FSK) signaling system having q frequency channels available for hopping. During each signaling interval, the transmitter and receiver operate in either a conventional or unconventional mode. The conventional mode is selected by the transmitter and the receiver with a pseudorandom probability p.sub.c. In this mode, the transmitter transmits one of r tones within the corresponding hop (i.e., within one of q channels), and log.sub.2 r information bits are conveyed, while the receiver comprises a dehopper followed by noncoherent matched filters. The unconventional mode is selected with probability 1-p.sub.c. In this mode, the transmitter randomly chooses one of the r tones and transmits it in one of r channels within each hop, where the r channels are selected pseudorandomly. In the unconventional mode, log.sub.2 r information bits are transmitted and the receiver comprises a bank of r radiometers.
摘要翻译：用于跳频扩频通信系统的部分带跟随器干扰器的对策采用具有可用于跳频的q个频率信道的M进制正交频移键控（FSK）信令系统。在每个信令间隔期间，发射机和接收机以常规或非常规模式工作。常规模式由具有伪随机概率pc的发射机和接收机选择。在该模式中，发射机在对应的跳频（即，在q个信道之一内）之间发送r个音调中的一个，并且传送log2r信息比特，而接收机包括后卫非相干匹配滤波器。非常规模式以概率1-pc选择。在这种模式下，发射机随机选择一个r个音调，并在每个跳频中的一个r个信道中发送，其中r个信道被伪随机地选择。在非常规模式下，发送log2r信息位，并且接收器包括一组r辐射计。

14. 发明授权

US09120494B2 System, method and computer software code for remotely assisted operation of a railway vehicle system 有权
标题翻译：铁路车辆系统的远程辅助操作的系统，方法和计算机软件代码
公开(公告)号：US09120494B2
公开(公告)日：2015-09-01
申请号：US11566384
申请日：2006-12-04
申请人： Ajith K. Kumar , John E. Hershey , Carlos L. Hanze , Wolfgang Daum , David M. Davenport
发明人： Ajith K. Kumar , John E. Hershey , Carlos L. Hanze , Wolfgang Daum , David M. Davenport
IPC分类号： B61L3/12
CPC分类号： B61L3/127
摘要： A method for operating a train having at least one locomotive vehicle, the method including controlling operation of the train via a first crew member located on-board the locomotive unit, providing information that may be required for operation of the train to a second crew member located remote from the first crew member, and using the information to enable the second crew member to assist the first crew member in the controlling of the train.
摘要翻译：一种用于操作具有至少一个机车的列车的方法，所述方法包括经由位于机车单元上的第一机组人员来控制列车的操作，提供列车运行所需的信息给第二机组人员位于远离第一机组成员的位置，并且使用该信息使第二机组成员协助第一机组成员控制列车。

15. 发明授权

US07140577B2 Remote system for monitoring and controlling railroad wayside equipment 有权
标题翻译：用于监控和控制铁路路边设备的远程系统
公开(公告)号：US07140577B2
公开(公告)日：2006-11-28
申请号：US10820499
申请日：2004-04-08
申请人： Samuel R. Mollet , Joseph Noffsinger , David M. Davenport , John E. Hershey
发明人： Samuel R. Mollet , Joseph Noffsinger , David M. Davenport , John E. Hershey
IPC分类号： B61L7/00
CPC分类号： B61L27/0005 , B61L7/088
摘要： A system for remote control of an electrically operated railroad wayside equipment having a power supply for powering the wayside equipment. a central controller provides central control signals. A transmitter associated with the controller receives the control signals and transmits communications signals corresponding to the control signals. A remote equipment controller controls operation of the wayside equipment in response thereto.
摘要翻译：一种用于远程控制电动铁路路边设备的系统，其具有用于向旁路设备供电的电源。中央控制器提供中央控制信号。与控制器相关联的发射器接收控制信号并发送与控制信号对应的通信信号。远程设备控制器响应于此控制路边设备的操作。

16. 发明授权

US06856647B1 Methods and systems for neutral-to-ground communication 有权
标题翻译：中立地面通信的方法和系统
公开(公告)号：US06856647B1
公开(公告)日：2005-02-15
申请号：US09690618
申请日：2000-10-17
申请人： Scott C. Evans , John E. Hershey
发明人： Scott C. Evans , John E. Hershey
IPC分类号： H04L25/02 , H04B3/54 , H04M7/02
CPC分类号： H04B3/54 , H04B2203/5425 , H04B2203/5483
摘要： A method of distributing wide band data using a neutral-to-ground circuit within an electrical wiring installation includes modifying a load center with an interface module which interfaces to the neutral-to-ground circuit and configuring the interface module to compensate for varying impedance within the neutral-to-ground circuit to improve data transmission characteristics. Multiple embodiments are included within the method for compensation of varying impedance including channel sounding, spectral waterfilling, and communications using spread spectrum techniques, for example, frequency hopping and direct sequencing techniques.
摘要翻译：在电气布线安装中使用中性线对地电路分配宽带数据的方法包括：通过接口模块修改负载中心，所述接口模块与中性线对地电路相连接，并且配置接口模块以补偿接地模块内的变化的阻抗中性点对地电路提高数据传输特性。在用于补偿包括信道探测，频谱灌水和使用扩频技术的通信（例如跳频和直接测序技术）的变化阻抗的方法中包括多个实施例。

17. 发明授权

US5616824A Instrument for detecting potential future failures of valves in critical control systems 失效
标题翻译：用于检测关键控制系统阀门潜在未来故障的仪器
公开(公告)号：US5616824A
公开(公告)日：1997-04-01
申请号：US517884
申请日：1995-08-21
申请人： Aiman A. Abdel-Malek , John E. Hershey , Amer A. Hassan
发明人： Aiman A. Abdel-Malek , John E. Hershey , Amer A. Hassan
IPC分类号： F16K37/00 , G01M13/02
CPC分类号： F16K37/0083
摘要： Apparatus for monitoring the health and response of critical electromechanical control valves to detect the likelihood of future valve malfunction includes the use of Fourier transform decomposition and time-domain wavelets to selectively enhance portions of the valve response signal for comparison with a normal valve response signal.
摘要翻译：用于监测关键机电控制阀的健康和响应以检测未来阀故障的可能性的装置包括使用傅里叶变换分解和时域小波来选择性地增强阀响应信号的部分以与正常阀响应信号进行比较。

18. 发明授权

US5532860A Spatial synchronization for optical communication system 失效
标题翻译：光通信系统的空间同步
公开(公告)号：US5532860A
公开(公告)日：1996-07-02
申请号：US406437
申请日：1995-03-20
申请人： John E. Hershey , Nabeel A. Riza , Amer A. Hassan
发明人： John E. Hershey , Nabeel A. Riza , Amer A. Hassan
IPC分类号： G02B27/48 , H04J14/00
CPC分类号： H04J14/00 , G02B27/48
摘要： A spatial synchronization method for an optical communications system includes the step of transmitting from a transmit aperture a pyramidal synchronizing profile so as to sequentially spatially register a user identification speckle pattern at a receive aperture. The iterative patterns in the pyramidal synchronizing profile detected by the receive array are processed and correlated with a library of respective user pyramidal synchronizing profiles so as to match and register the speckle pattern for a particular user. Registration of the user speckle pattern provides an offset value representing the spatial relation of a reference point of the user's pattern to a corresponding reference point of the receive aperture, which offset information is applied to a receive pattern processor so that the receive aperture is aligned with the transmitted speckle patterns.
摘要翻译：用于光通信系统的空间同步方法包括从发射孔径发送锥体同步分布的步骤，以便在接收孔径处依次空间地登记用户识别散斑图案。由接收阵列检测的金字塔形同步分布中的迭代模式被处理并与相应用户锥体同步分布的文库相关联，以便匹配并注册特定用户的散斑图案。用户斑点图案的注册提供表示用户图案的参考点与接收孔径的相应参考点的空间关系的偏移值，该偏移信息被施加到接收图案处理器，使得接收孔径与传输的斑点图案。

19. 发明授权

US5519692A Geometric harmonic modulation (GHM)-digital implementation 失效
标题翻译：几何谐波调制（GHM）数字实现
公开(公告)号：US5519692A
公开(公告)日：1996-05-21
申请号：US407554
申请日：1995-03-20
申请人： John E. Hershey , Gary J. Saulnier , Amer A. Hassan
发明人： John E. Hershey , Gary J. Saulnier , Amer A. Hassan
IPC分类号： H04B1/69 , H04L27/26 , H04K1/00
CPC分类号： H04B1/69 , H04L27/2601
摘要： A set of phases defining an `address` and a `spreading key` is selected. These are employed in determining a preamble waveform and a traffic waveform. The preamble carrier waveform is a sum of a set of tones each offset by its phase, whereas the traffic carrier waveform is the product of these same offset tones. The tones have frequencies which are geometrically increasing multiples of a fundamental frequency. The phases and magnitudes of the preamble and traffic carrier waveforms are determined and prestored in a transmit and receive unit storage device. An inverse discrete Fourier Transform unit (IDFT) in the transmit unit receives the phase preamble offsets and magnitudes from the storage unit and creates a preamble carrier signal transmitted to the receive unit which determines if the phases match those which it is to listen to. If not, the following message is ignored; if they are, the following message is despread and decoded. IDFT creates a traffic carrier waveform from the traffic phases and magnitudes. Binary information is encoded in the carrier, processed and transmitted to the receive unit. A discrete Fourier Transform unit converts the received signal into phases and magnitudes. A dot product unit determines a dot product of the phase and magnitudes of the received signal and the traffic carrier waveform over a number of frequencies. A decision unit determines a binary message from the dot product.
摘要翻译：选择定义“地址”和“扩展密钥”的一组相位。这些用于确定前导码波形和业务波形。前导码载波波形是每个偏移其相位的一组音调的和，而业务载波波形是这些相同偏移音调的乘积。音调具有几何上增加基频倍数的频率。前导码和业务载波波形的相位和幅度被确定并预存储在发送和接收单元存储设备中。发送单元中的离散傅里叶逆变换单元（IDFT）从存储单元接收相位前导偏移量和幅度，并产生发送到接收单元的前导码载波信号，该信号确定相位是否匹配要收听的相位。如果没有，则忽略以下消息; 如果它们是，则以下消息被解扩和解码。 IDFT从交通阶段和幅度创建一个载波波形。二进制信息被编码在载体中，被处理并发送到接收单元。离散傅立叶变换单元将接收的信号转换为相位和幅度。点积单位确定接收信号的相位和幅度以及多个频率上的业务载波波形的积积。决策单元从点积确定二进制消息。

20. 发明授权

US5453681A Current sensor employing a mutually inductive current sensing scheme 失效
标题翻译：电流传感器采用互感电流检测方案
公开(公告)号：US5453681A
公开(公告)日：1995-09-26
申请号：US85788
申请日：1993-07-06
申请人： Ertugrul Berkcan , John E. Hershey
发明人： Ertugrul Berkcan , John E. Hershey
IPC分类号： G01R1/20 , G01R15/18
CPC分类号： G01R1/203 , G01R15/18
摘要： An alternating current sensor employing a mutually-inductive current sensing scheme comprises a conductive pipe and a cylindrical-shaped conductive element at least partially surrounded by the pipe. The pipe is substantially concentric to the conductive element and a conductor electrically connects a pair of corresponding ends of the pipe and conductive element to form a connected conductive path through the sensor. The conductive element may include a passage or opening shaped to form a magnetic field within the passage during current flow along the conductive path.
摘要翻译：采用互感电流检测方案的交流传感器包括至少部分地被管道包围的导电管和圆柱形导电元件。管道与导电元件基本上同心，并且导体电连接管和导电元件的一对相应的端部以形成通过传感器的连接的导电路径。导电元件可以包括通道或开口，其形状以在沿着导电路径的电流期间在通道内形成磁场。

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