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    Loopback control system in data transmission
    75.
    发明专利
    Loopback control system in data transmission 失效
    数据传输中的环回控制系统

    公开(公告)号：JPS6110344A

    公开(公告)日：1986-01-17

    申请号：JP13017384

    申请日：1984-06-26

    Applicant: Seiichi Miyazaki

    Inventor： MIYAZAKI SEIICHI

    IPC: H04L12/437

    CPC classification number: H04L12/437

    Abstract: PURPOSE:To attain switching by electric components in case of the optical fiber transmission by switching the transmission line not by a transmission line part but by the inside of a station. CONSTITUTION:If a station ST2 is faulty completely, a signal from the station ST2 is lost at a main transmission line side and a detector DT1 of a station ST3 has no signal and its output is 0. Thus, a changeover switch S1 is turned on to the position of a repeater RP and a switch S4 is turned off. As a result, a station ST3 is connected by the path of sub-transmission line R2 S2 RP TM D1 main transmission line. The switch S4 is turned off and no signal is transmitted to the station ST2. The detector DT2 of the station ST1 has no signal and then the changeover switch S2 is turned on to the position of a transmitter TM. As a result, the station ST1 is connected in the path of main transmission line R1 S1 TM S2 RP S4 D2 sub-transmission line. Then only the station ST2 is disconnected and the loop back is established.

    Abstract translation: 目的：通过不是通过传输线部分而是通过车站内部切换传输线来实现光纤传输的情况下通过电气部件进行切换。 构成：如果站ST2完全故障，则在主传输线侧发生来自站ST2的信号，并且站ST3的检测器DT1没有信号，并且其输出为0.因此，切换开关S1导通 到中继器RP的位置并且开关S4被断开。 结果，站ST3通过子传输线R2 S2 RP TM D1主传输线的路径连接。 开关S4断开，没有信号发送到站ST2。 站ST1的检测器DT2没有信号，然后切换开关S2被接通到发射机TM的位置。 结果，站ST1连接在主传输线R1 S1 TM S2 RP S4 D2子传输线的路径中。 然后只有站ST2被断开并且回路被建立。

    Loop transmission system
    76.
    发明专利
    Loop transmission system 失效
    环路传输系统

    公开(公告)号：JPS60194645A

    公开(公告)日：1985-10-03

    申请号：JP4998284

    申请日：1984-03-14

    Applicant: Hitachi Cable Ltd

    Inventor： IMAI MITSUO ,  ASAI TAKAHIRO ,  TAKAGI YOSHIKI

    IPC: H04L12/437

    CPC classification number: H04L12/437

    Abstract: PURPOSE:To simplify the constitution of the loop transmission system and to reduce its cost by connecting two branching filters to right and left transmission lines of each node station respectively, transmitting a signal from the node station through a looped transmission line clockwise and counterclockwise, and returning the signal when a circuit becomes faulty. CONSTITUTION:A two-way wavelength multiplex transmission line is provided between each node station and its adjacent node station. This basic transmission line consists of a branching filter 61 and an optical fiber 62 and allows two-way transmission with the one optical fiber so that a signal with wavelength 1 is transmitted counterclockwise and a signal with 2 is transmitted clockwise. If the optical fiber is broken at, for example, a point 30, the signals are returned 31 by the stations at both terminals of the section wherein the trouble occurs to set a loop transmission line. Thus, circuit trouble is handled even with one transmission line and the station becomes unable to receive the signal only change connection of its exchange slightly to attain alteration into the return constitution easily in case of circuit trouble.

    Abstract translation: 目的：为了简化环路传输系统的结构，并通过将两个分路滤波器分别连接到每个节点站的左右传输线路来降低成本，通过顺时针和逆时针通过环路传输线路传输来自节点站的信号， 当电路发生故障时返回信号。 构成：在每个节点站和其相邻节点之间提供双向波长复用传输线。 该基本传输线由分支滤波器61和光纤62组成，并允许与一根光纤进行双向传输，使得波长为1的信号逆时针传输，并且具有2的信号顺时针传输。 如果光纤在例如点30处断线，那么在发生故障发生设置环路传输线的部分的两端处的站返回31信号。 因此，即使使用一条传输线路也能处理电路故障，并且在电路故障的情况下，站变得不能轻易地接收到其交换机的信号仅仅改变其交换连接以便改变为返回结构。

    Local network system
    79.
    发明专利
    Local network system 失效
    本地网络系统

    公开(公告)号：JPS59167149A

    公开(公告)日：1984-09-20

    申请号：JP3927083

    申请日：1983-03-11

    Applicant: Hitachi Ltd

    Inventor： SHIOTANI MAKOTO ,  NISHIKAWA TAKASHI ,  FUNABASHI SEIJIYU ,  KURIYAMA KENICHIROU

    IPC: H04L12/437

    CPC classification number: H04L12/437

    Abstract: PURPOSE:To prevent the fault of a node from having the influence upon the whole of a system and transmit an emergency signal preferentially by removing a transceiver for reception and providing a filter on a transmission line and providing a monitor bit storage device in a controller. CONSTITUTION:In case of the transmission of information from a terminal machine 31 to a terminal machine 33, a node 21 sets precedence and puts a number into a monitor bit 201 and inserts transmission and reception addresses and data and sets a flag for acceptance confirmation and starts the transmission to a transmission line 11. The transmission direction is defined as the counterclockwise direction. A receiving node 23 takes in them and erases the signal on the transmission line by a filter 43 after confirmation of addresses. If a node 22 transmits a signal having a priority higher than that of the signal which the node 21 transmits, the latter signal is erased by a filter 42, and the node 21 cannot confirm acception and transmits the signal again. If the node 23 is broken down, the monitor bit 201 of the signal is erased in the second or following rounds by one of nodes 21, 22, and 24 stored in a monitor bit storage device 71.

    Abstract translation: 目的：为了防止节点的故障影响整个系统，并优先通过移除收发器进行接收并在传输线路上提供一个滤波器，并在控制器中提供一个监视器位存储装置来发送紧急信号。 构成：在从终端机31向终端机33发送信息的情况下，节点21设置优先级并将数字放入监视器位201，并插入发送和接收地址和数据并设置用于接受确认的标志， 开始传输到传输线11.传输方向被定义为逆时针方向。 接收节点23在确认地址之后，通过滤波器43接收并消除传输线上的信号。 如果节点22发送优先级高于节点21发送的信号的信号，则后一信号被滤波器42擦除，并且节点21不能确认接收并再次发送该信号。 如果节点23被分解，则信号的监视位201在存储在监视器位存储装置71中的节点21,22和24中的一个的第二或后续回合中被擦除。

    Loop transmitter
    80.
    发明专利
    Loop transmitter 失效
    环路发送器

    公开(公告)号：JPS59160353A

    公开(公告)日：1984-09-11

    申请号：JP3544883

    申请日：1983-03-03

    Applicant: Kawasaki Heavy Ind Ltd

    Inventor： ISHIDA TAKESHI

    IPC: H04B1/74 ,  H04L12/437

    CPC classification number: H04B1/745 ,  H04L12/437

    Abstract: PURPOSE: To handle sufficiently even faults at plural positions by reversing transmissions in direction each other, and connecting a couple of transmitters to a controller through loop transmission lines, and providing transmitters for compensation to the connection parts.
    CONSTITUTION: If transmitters 13e and 13f, and 14e and 14f are disconnected from each other respectively, transmitters 15m and 15n are connected together through a connection line 15, and the transmitters 16m and 16n for compensation are connected together through a connection line 16 to constitute a bypass. Further, even when either of half parts 1R and 2R of transmission lines 1 and 2 functions, pieces of departure information on, for example, trains T1∼T3 are transmitted to the following station only by the remaining parts 1L and 2L of the loop transmission lines and information is transferred between a central processor 3 and respective controllers 4a∼4f without hindrance.
    COPYRIGHT: (C)1984,JPO&Japio

    Abstract translation: 目的：通过在彼此相反的方向上反向传输，并且通过环路传输线将一对发射机连接到控制器，并通过连接部分提供发射机来补偿多个位置处的足够均匀的故障。 构成：如果发射机13e和13f和14e和14f分别断开，则发射机15m和15n通过连接线路15连接在一起，用于补偿的发射机16m和16n通过连接线16连接在一起，构成 旁路。 此外，即使传输线路1和2的半部分1R和2R中的任一个起作用，例如列车T1-T3的出站信息仅由循环传输的其余部分1L和2L发送到后续站 线路和信息在中央处理器3和相应的控制器4a-4f之间无障碍地传送。

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