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。

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。

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。

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。

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。

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。

公开(公告)号：US5239584A

公开(公告)日：1993-08-24

申请号：US813637

申请日：1991-12-26

申请人： John E. Hershey ,  Larry A. Schmidt ,  Marjorie J. Mancuso

发明人： John E. Hershey ,  Larry A. Schmidt ,  Marjorie J. Mancuso

IPC分类号： H04L9/06 ,  H04L9/32

CPC分类号： G06Q50/06 ,  H04L9/0618 ,  H04L9/3236 ,  H04L2209/043 ,  H04L2209/601 ,  H04L2209/80

摘要： In one embodiment, the present invention is an encryption/decryption and authentication algorithm. The algorithm has three major steps. The first step is generating cipher text. The second step is generating the authentication field. The third step is encrypting or deciphering the appropriate data in the message. One byte of cipher text is generated for every byte of plain text contained in the message. After all the cipher text is generated, a four byte authentication field is generated using the last four bytes of cipher text. The message is then scanned for data fields which have been encrypted or are to be encrypted and the corresponding byte of cipher text replaces the message bytes. The encryption is accomplished by sending the cipher text instead of message text. To decipher the message, the algorithm operates in a reverse mode to replace the cipher text with the message text, i.e., the algorithm is a self-reversing process.

摘要翻译： 在一个实施例中，本发明是加密/解密和认证算法。 该算法有三个主要步骤。 第一步是生成密文。 第二步是生成认证字段。 第三步是加密或解密消息中的相应数据。 为消息中包含的纯文本的每个字节生成一个字节的密文。 生成所有密文后，使用最后四个密文字节生成四字节认证字段。 然后扫描已经加密或要加密的数据字段的消息，并且密文的相应字节替换消息字节。 加密是通过发送密文而不是消息文本来实现的。 为了解密消息，算法以反向模式操作以用消息文本替换密文，即算法是自反转过程。

公开(公告)号：US07313817B2

公开(公告)日：2007-12-25

申请号：US10462937

申请日：2003-06-17

申请人： Scott C. Evans ,  John E. Hershey ,  Gary J. Saulnier

发明人： Scott C. Evans ,  John E. Hershey ,  Gary J. Saulnier

IPC分类号： G06F9/00 ,  G06F15/16 ,  G06F17/00 ,  G06F15/173

CPC分类号： H04L43/16

摘要： A system, method and program storage device tangibly embodying a program of instructions for determining whether to allow transmission of data from a source destined for a destination over a network, comprising: acquiring a string of a predetermined length in bits (L) from the data; partitioning the acquired string into a partition of phrases, each of the phrases in the partition being unique and having one or more bits; determining a number of phrases (N) in the partition; estimating a normalized complexity (C) for the Kolmogorov Complexity in the acquired string via C ≡ N 2 ⁢ L ; and evaluating whether to allow transmission of the data based on a comparison of whether the normalized complexity estimate (C) is within a predetermined normal complexity estimate band.

摘要翻译： 一种系统，方法和程序存储装置，其有形地体现用于确定是否允许通过网络发送来自目的地的目的地的源的数据的指令的程序，包括：从数据中以比特（L）获取预定长度的字符串 ; 将所获取的字符串划分为短语分区，分区中的每个短语是唯一的，并具有一个或多个比特; 确定分区中的短语数量（N）; 通过