公开(公告)号：WO1989004568A1

公开(公告)日：1989-05-18

申请号：PCT/US1988003868

申请日：1988-10-28

Applicant: COMSOURCE SYSTEMS CORPORATION

Inventor： COMSOURCE SYSTEMS CORPORATION ,  HILL, Lawrence, Woodbridge ,  SARLES, Frederick, Williams

IPC: H04B05/00

CPC classification number: H04B5/0075 ,  G05D1/0265

Abstract: The system comprises transceivers (24) employing identical modems, one (32) located at a fixed position and connected to the ceiver's specialized modems may be connected to a central or to a communications bus as required. Additional transceivers may be connected to the communications bus (44) for communication between the central host and additional wires (48, 54). All central host signals are transmitted to all wire connected modems and sent out on all wires. All signals from vehicle modems are transmitted back to the central host. Each transceiver is adapted to employ one or more identical modem, each connected to a different wire. Communication between the wire and a vehicle is by means of an inductive coupler (60) employing ferrite rods (132, 134, 136) which is designed such that the transfer function from the fixed modem to the vehicle mounted modem is substantially identical to the transfer function from the vehicle modem to the fixed modem.

Abstract translation: 该系统包括采用相同调制解调器的收发器（24），位于固定位置的一个（32）并且连接到电信专用调制解调器可以根据需要连接到中央或通信总线。 附加的收发器可以连接到通信总线（44），用于中央主机和附加线路（48,54）之间的通信。 所有中央主机信号都传输到所有连线的调制解调器，并在所有电线上发送。 来自车辆调制解调器的所有信号都被传送回中央主机。 每个收发器适于采用一个或多个相同的调制解调器，每个调制解调器连接到不同的电线。 电线和车辆之间的通信是借助于使用铁氧体杆（132,134,136）的电感耦合器（60），其被设计成使得从固定调制解调器到车载调制解调器的传递功能基本上与传送 功能从车载调制解调器到固定调制解调器。

公开(公告)号：WO1990012463A1

公开(公告)日：1990-10-18

申请号：PCT/US1990001823

申请日：1990-04-04

Applicant: COMSOURCE SYSTEMS CORPORATION

Inventor： COMSOURCE SYSTEMS CORPORATION ,  HILL, Lawrence, Woodbridge

IPC: H04L01/02

CPC classification number: G05D1/0265 ,  G06F11/076 ,  H03G3/001 ,  H03G3/002 ,  H04B1/69 ,  H04B1/713 ,  H04B1/715 ,  H04B3/54 ,  H04B3/56 ,  H04B7/0671 ,  H04B7/12 ,  H04B2001/7152 ,  H04B2001/71563 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5425 ,  H04B2203/5441 ,  H04B2203/5445 ,  H04B2203/5483 ,  H04B2203/5487 ,  H04B2203/5491 ,  H04B2203/5495 ,  H04J13/00 ,  H04L1/02

Abstract: Messages are transmitted on pairs of frequencies that are orthogonal, that is the frequencies have no least common denominator. A message is transmitted on the first of the pair of frequencies (F1, F2) and, simultaneously, its compliment is transmitted on the second of said pair of frequencies (F1, F2). The message is then retransmitted on another pair of orthogonal frequencies. A processor is provided for collecting information on the data error rates at each receiver. This information is periodically transmitted to a central frequency controller which collects this error information and determines the error rates on the frequencies being used.

Abstract translation: 消息是在正交的频率对上发送的，即频率具有最小的共同特征。 在一对频率（F1，F2）中的第一个频率上发送消息，同时，在所述频率对（F1，F2）中的第二个频率上发送其补码。 然后在另一对正交频率上重传该消息。 提供处理器用于收集关于每个接收机处的数据错误率的信息。 该信息被周期地发送到收集该错误信息并确定所使用频率上的错误率的中央频率控制器。

公开(公告)号：WO1994003002A1

公开(公告)日：1994-02-03

申请号：PCT/US1993006911

申请日：1993-07-23

Applicant: COMSOURCE SYSTEMS CORPORATION ,  HILL, Lawrence, Woodbridge

Inventor： COMSOURCE SYSTEMS CORPORATION

IPC: H04J13/00

CPC classification number: H04J13/00 ,  G05D1/0265 ,  G06F11/076 ,  H03G3/001 ,  H03G3/002 ,  H04B1/69 ,  H04B1/713 ,  H04B1/715 ,  H04B3/54 ,  H04B3/56 ,  H04B7/0671 ,  H04B7/12 ,  H04B2001/7152 ,  H04B2001/71563 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5425 ,  H04B2203/5445 ,  H04B2203/5483 ,  H04B2203/5495 ,  H04L1/02

Abstract: A system utilizing adaptive frequency-hopped spread spectrum modulation to communicate over noisy communications channels is described. Individual packets of data are transmitted with FSK modulation using two frequencies chosen from a larger set. An error coding system is used in which data on the quality of reception at each network transceiver is used to alter the gain of the receiver, the bit rate of the transmission, and the specific frequencies employed by the network for the purpose of optimizing communicatioin error rate. A Master transceiver, controlling network management, transmits channel control information to other transceivers on the network, enabling system synchronization, acquisition of an existing network by new subscribers. Each transceiver comprises a frequency controlled carrier generator, a pair of digital detectors each having a frequency controlled bandpass filter microprocessors for control and broad band coupling networks for coupling the transceiver to a communications channel.

Abstract translation: 描述了利用自适应跳频扩频调制在噪声通信信道上进行通信的系统。 使用从较大集合中选择的两个频率，使用FSK调制来发送单个数据包。 使用错误编码系统，其中使用每个网络收发器的接收质量的数据来改变接收机的增益，传输的比特率以及网络采用的特定频率，以便优化通信错误 率。 控制网络管理的主收发器将信道控制信息发送到网络上的其他收发器，从而实现系统同步，由新用户获取现有网络。 每个收发器包括频率控制的载波发生器，一对数字检测器，每个具有用于控制的频率受控带通滤波器微处理器和用于将收发器耦合到通信信道的宽带耦合网络。