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    STAND-BY HIGHWAY SUPERVISORY DEVICE
    11.
    发明专利
    STAND-BY HIGHWAY SUPERVISORY DEVICE 失效

    公开(公告)号：JPS61146038A

    公开(公告)日：1986-07-03

    申请号：JP26926084

    申请日：1984-12-20

    Applicant: FUJITSU LTD

    Inventor： NEGISHI HITOSHI ,  NAKAHARA YASUHIRO ,  KITANO YOSHIHIRO ,  INOUE YUKINORI ,  NAKAMURA OSAMU

    IPC: G05B9/03

    Abstract: PURPOSE:To execute smoothly switching to a stand-by device by holding and updating the information of line switching in the control information which is detected from a frame to be transmitted and received between an existing highway supervisory device and a communication device, by a stand-by highway supervisory device. CONSTITUTION:A stand-by highway supervisory device 2 is connected to an annular data transmission line 6. The supervisory device 2 O/E-converts 7 a data from the upstream, S/P-converts 9 it, brings it to buffering by registers 10, 11 and P/S-converts 12 it, brings it to a data conversion 15 through a changeover switch 13 and sends it out to the downstream. Also, an output of the data converting part 7 is outputted to a frame counter 8, and from in its counter, a processor 17 always supervisors a command through an inter-node communication control part 16, that which is related to line switching is extracted and written in a management table, and also updated. In this way, when the existing supervisory device becomes faulty, even if it is switched to the stand-by supervisory device immediately, the line connection is secured, and switching is executed smoothly.

    CONTROL SYSTEM OF OPTICAL DATA HIGHWAY
    12.
    发明专利
    CONTROL SYSTEM OF OPTICAL DATA HIGHWAY 失效

    公开(公告)号：JPS60253336A

    公开(公告)日：1985-12-14

    申请号：JP10982884

    申请日：1984-05-30

    Applicant: FUJITSU LTD

    Inventor： NAKAMURA OSAMU ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NAKAHARA YASUHIRO ,  NEGISHI HITOSHI

    IPC: H04B10/572 ,  H04B10/00 ,  H04B10/07 ,  H04B10/275 ,  H04B10/293 ,  H04B10/564

    Abstract: PURPOSE:To keep the photodetecting levels of each node within an optimum range respectively and at the same time to change easily the number, arrangement, etc. of nodes, by informing the corresponding photodetecting level to the corresponding node through a monitor node that received the information on the photodetecting levels from each node and controlling the level to be sent by the node. CONSTITUTION:Terminal nodes 2-4 can detect reception levels and also control the transmission levels. In case the level received by a node 3 is outside a prescribed range, the node 3 gives the information on the photodetecting level to a monitor node 1. The node 1 retrieves a node 2 sent to the node 3 through a table, etc. and delivers the information on the corresponding photodetecting level. Thus the node 2 transmits an optical signal according to the informed level. Thus the photodetecting levels received by nodes 2-4 or the node 1 can be kept within a prescribed range.

    PACKET EXCHANGE CONTROLLING SYSTEM
    13.
    发明专利
    PACKET EXCHANGE CONTROLLING SYSTEM 失效

    公开(公告)号：JPS60245339A

    公开(公告)日：1985-12-05

    申请号：JP10196384

    申请日：1984-05-21

    Applicant: FUJITSU LTD

    Inventor： KITANO YOSHIHIRO ,  MITA TERUYOSHI ,  NAKAHARA YASUHIRO ,  NEGISHI HITOSHI ,  NAKAMURA OSAMU

    IPC: H04L12/433

    Abstract: PURPOSE:To use a packet of appropriate length, and to improve the use efficiency of a communication line and the service by selecting one of packets from a communication frame containing plural packets having plural data lengths, writing a transmitting data in this packet, and transmitting it. CONSTITUTION:When a transmission request from a subsystem 3 is detected by an interface controlling circuit 37, and informed to a controlling circuit 34, data is received from the subsystem 3 and accumulated in a buffer 39. When the data of length at a data part of the longest packet is accumulated in the buffer 39, or the transmitting data is ended, the control part 34 inspects each packet of a communication frame received successively in the buffer 35, and searches a packet in which a busy display bit is an idle display, and the length of a data part determined by a data length part 25 is not shorter than the transmitting data of the buffer 39. A short packet arrives first interms of time, therefore, the short packet is selected automatically and preferentially, and sent out to a communication line 4 through a repeater 30.

    CIRCUIT SUPERVISORY DEVICE SWITCHING SYSTEM
    14.
    发明专利
    CIRCUIT SUPERVISORY DEVICE SWITCHING SYSTEM 失效

    公开(公告)号：JPS60245336A

    公开(公告)日：1985-12-05

    申请号：JP10196284

    申请日：1984-05-21

    Applicant: FUJITSU LTD

    Inventor： NAKAHARA YASUHIRO ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NEGISHI HITOSHI ,  NAKAMURA OSAMU

    IPC: H04B1/74 ,  H04L12/437

    Abstract: PURPOSE:To execute easily and quickly a rise of a communicating system of a ring- shaped circuit by providing a means for sending out an intrinsic identification code to a communicating circuit, and a means for receiving the identification code from the communicating circuit, and entering a holding state when a receiving identification code and a sending-out identification code do not coincide with each other. CONSTITUTION:Circuit supervisory devices 26, 27 are devices of the same constitution, have a function for always sending out a signal frame of a prescribed format by a prescribed timing, and a function for supervising a circuit, etc., both of them become existing and stand-by devices, respectively, and only the existing device is operated actually so as to send out the signal frame to a transmitting circuit. An intrinsic identification code for displaying the own device is inserted into the signal frame sent out of the circuit supervisory devices 26, 27 and sent, and in case the identification code fed back through a ring-shaped circuit is different from the identification code sent out of the own device, the circuit supervisory device which has detected it is held as a stand-by device, and the device whose identification code has coincided continues a circuit supervisory operation as an existing device. In this way, control of an existing/stand-by conversion is executed automatically.

    PROCESSING SYSTEM OF TROUBLE ON TRANSMISSION LINE
    15.
    发明专利
    PROCESSING SYSTEM OF TROUBLE ON TRANSMISSION LINE 失效

    公开(公告)号：JPS60128742A

    公开(公告)日：1985-07-09

    申请号：JP23726383

    申请日：1983-12-16

    Applicant: FUJITSU LTD

    Inventor： NAKAHARA YASUHIRO ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NEGISHI HITOSHI ,  NAKAMURA OSAMU

    IPC: H04L12/00 ,  H04L11/00

    Abstract: PURPOSE:To reduce ineffective operations of a data terminal device and improve efficiency of data communication by reporting the data communication impossible state to the data terminal device when a highway monitor device performs transmission line operations because of occurrence of troubles of the transmission line or external indications. CONSTITUTION:A highway monitor device SV is provided with a trouble processing control part ERC16, and a trouble processing bit LNPB17 is provided in an FH5. If the SV detects troubles and a transmission line operation occurs by the transmission operation for trouble recovery processing or an operator's indication, the LNPB17 in the FH5 is set by the ERC. A common control part 10 of a station node 2 identifies the transmission line trouble or the transmission line operation due to it by recognition of abnormality of a select system due to reporting of an abnormality signal S2 from a receiving and transmitting part 7, reporting of the counted value from a frame counter part 9, or setting of the LNPB19 in the FH5 and detects that data communication is impossible, and the common control part 10 outputs a trouble occurrence signal 18 to each line control part 12.

    SYSTEM FOR PROCESSING COMMUNICATION FAULT
    16.
    发明专利
    SYSTEM FOR PROCESSING COMMUNICATION FAULT 失效

    公开(公告)号：JPS6068742A

    公开(公告)日：1985-04-19

    申请号：JP17722883

    申请日：1983-09-26

    Applicant: FUJITSU LTD

    Inventor： NEGISHI HITOSHI ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NAKAHARA YASUHIRO ,  NAKAMURA OSAMU

    IPC: H04L12/437

    Abstract: PURPOSE:To disconnect only a faulty node by connecting a transmission line of an active system and a spare system by means of the (k-1)-th and (k+1)-th nodes if the k-th node is faulty in a data highway system having a duplicated ring transmission line. CONSTITUTION:If a fault occurs in a node 20k in a duplicated data highway comprising the active system 4 and the spare system 5, a supervisory device 1a detects it and gives a command to a node 20k-1 to connect the active system transmission line 4 and the spare system transmission line 5 via the active system transmission line 4. Then the device 1a gives a command to a node 20k+1 to connect the active system transmission line 4 and the spare system transmission line 5 via the spare system transmission line 5. Thus, the operation of a communication system is continuted by disconnecting the faulty node 20k only.

    Diagnosing system of address comparator
    18.
    发明专利
    Diagnosing system of address comparator 失效
    地址比较器诊断系统

    公开(公告)号：JPS59174049A

    公开(公告)日：1984-10-02

    申请号：JP4795183

    申请日：1983-03-24

    Applicant: Fujitsu Ltd

    Inventor： NAKAHARA YASUHIRO ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NAKAMURA OSAMU ,  NEGISHI HITOSHI

    IPC: H04J3/24 ,  H04L5/22 ,  H04L12/26

    CPC classification number: H04L43/50

    Abstract: PURPOSE:To prevent an evil effect to be exerted on the communication of other circuit corresponding parts and to detect instantaneously a faulty point, by using the blank time of communication to diagnose an address comparator at the circuit corresponding part within a station node. CONSTITUTION:A time slot address which is set within a circuit corresponding part from a program control part 6 by means of a frame synchronizing pattern is informed to an address buffer 13 within a circuit control part 8. At the same time, a diagnosis indication 25 is informed to a selection part 14. The part 8 delivers a signal 26 showing the busy state of the part 6 from the part 14. A corresponding part 9 collates the time slots fed from the buffer 13 through a comparator 18 and delivers a time slot reception signal 23 when the coincidence of collation is obtained to inform the coincidence to a transmitting part 20, a receiving part 21 and an address check buffer 24 of the control part 8 respectively. Then the part 8 informs the address check result to the control part 6.

    Abstract translation: 目的：为了防止对其他电路对应部件的通信产生不利影响，并通过使用通信的空白时间诊断站节点内的电路对应部分的地址比较器，来对其进行瞬时检测。 构成：通过帧同步模式将来自程序控制部分6的电路对应部分内设置的时隙地址通知给电路控制部分8内的地址缓冲器13.同时，诊断指示25 通知给选择部分14.部分8从部分14传送表示部分6的忙状态的信号26.对应部分9将从缓冲器13馈送的时隙通过比较器18进行比较，并传送时隙 接收信号23，当获得对准的一致时，分别通知控制部分8的发送部分20，接收部分21和地址检查缓冲器24。 然后，部件8通知控制部分6的地址检查结果。

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