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    LOOPBACK EXTENSION CONTROL SYSTEM
    54.
    发明专利
    LOOPBACK EXTENSION CONTROL SYSTEM 失效

    公开(公告)号：JPS61292439A

    公开(公告)日：1986-12-23

    申请号：JP13382885

    申请日：1985-06-19

    Applicant: FUJITSU LTD

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

    Abstract: PURPOSE:To attain the automatic extension of a loop and the quick recovery of a communication system by providing a means commanding the maintenance or release of loopback constitution based on the reception state of a signal on the transmission line of a required node after the loopback constitution is set. CONSTITUTION:When the loopback is constituted as shown in the figure, for example, a loopback control section 46 commands loopback setting, e.g., from the system 0 to the system 1 to nodes 34, 35. When transmission lines 41, 43 are normal and both the nodes are recovered, a loopback shown in broken lines is set in both the nodes 34, 35. Then the loopback control section 46 inquires about the state to the end node 36 of the loopback loop and detects that the reception from the outside of the loop is normal, the section 46 commands the loopback release to the node 36 to extend the loop up to the node 34, inquires similarly about the state to the node 34, and when the state is normal, the section 46 commands the loopback release.

    DATA COMMUNICATION EQUIPMENT TEST CONTROL SYSTEM
    55.
    发明专利
    DATA COMMUNICATION EQUIPMENT TEST CONTROL SYSTEM 失效

    公开(公告)号：JPS61287351A

    公开(公告)日：1986-12-17

    申请号：JP12861685

    申请日：1985-06-13

    Applicant: FUJITSU LTD

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

    Abstract: PURPOSE:To attain automatic test and to fcilitate automatic changeover of active/standby state by sending periodically a test data to the own device from one communication equipment and receiving the data by the other communication equipment and checking the coincidence with the stored test data in a duplicated communication connected to a single communication line. CONSTITUTION:A microprocessor (MP) 14 of an active communication equipment 30 generates interruption at each setting time of a timer 35 and a test data 34 stored in a memory 34 is sent to a communication line 1. The test data 34 has a frame system shown in figure and a data part is a data suitable for fault detection. The frame is stored in both memories 32 of communication equipments 30, 31 in advance as a test data of the same content. The standby communication equipment 31 is always in the reception waiting state. The equipment 31 compares the received frame with the stored test data 34 and when the result of comparison is dissident, it is regarded as the presence of a fault in the active communication equipment 30 to set a fault display register 41 into the abnormity state. Thus, the MP 14 of the both the equipments apply the changeover of active/standby state.

    DIAGNOSE SYSTEM FOR DATA HIGHWAY SYSTEM
    56.
    发明专利
    DIAGNOSE SYSTEM FOR DATA HIGHWAY SYSTEM 失效

    公开(公告)号：JPS61154335A

    公开(公告)日：1986-07-14

    申请号：JP27685984

    申请日：1984-12-27

    Applicant: FUJITSU LTD

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

    Abstract: PURPOSE:To prevent advers effect onto other communication line by providing a diagnosing part in a frame so as to diagnose an address comparator theregy detecting a faulty part. CONSTITUTION:The diagnosing part comprising a test time slot TS part (TTS) and a line ID part (LID 0, 1) is provided in the frame circulating through a rind data transmission line. A supervisory device SV sets a TS value desired to be tested and transmits the result. When a communication device receiving the frame finds out a synchronizing pattern, it is informed of a frame counter 10, which counts the TS and transmits the TS in the TTS to an address comparator AC 12 via a register RG 17. The AC 12 comares the TS value sent with the assigned TS, and when they are coincident, an information processing part 18 is informed of it. The processing part 18 reads an LID from the RG 13, inserts a read address NA and a line address LA in which a BUSY bit is logical ''0'', the bit is brought into ligical ''1'' (BUSY=''1''), and the resulting frame is transmitted. The SV extracts the TS, NA and LA, collates them with those of a management table to recognize the state of the AC 12.

    TIME SLOT DIAGNOSE SYSTEM
    57.
    发明专利
    TIME SLOT DIAGNOSE SYSTEM 失效

    公开(公告)号：JPS61154334A

    公开(公告)日：1986-07-14

    申请号：JP27685884

    申请日：1984-12-27

    Applicant: FUJITSU LTD

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

    Abstract: PURPOSE:To obtain a data highway system with high reliability by applying self-diagnosis to a time slot detection circuit group in each communication controller. CONSTITUTION:When a data arrives in a communication controller and a synchronizing flag detecting circuit 41 detects a synchronizing flag, a time slot TS counter circuit 43 counts a TS, the count is used as a TS number and transmitted to a TS comparison circuit 51 via a TS switching circuit 46. The circuit 51 compares the TS number set in a TS setting circuit 52 with the TS number from the circuit 43, and when they are coincident, a data in the TS is stored in a register 47 in the line adaptor part 62 and transmitted to a data terminal device 61. A TS number of the adaptor part 62 being an object of diagnosis execution is written to a line control address register LCAR 54 of a microprocessor uPC 64 at a reception time band of a frame header, transmitted to the circuit 51 via the circuit 46, the result of comparison is written in an external register of the uPC 64, and when the TS number transmitted by the uPC 64 and the TS number set by the circuit 52 are coincident, it is discriminated that the circuits 51, 52 are operated normally.

    Communication system
    58.
    发明专利
    Communication system 失效
    通讯系统

    公开(公告)号：JPS6181047A

    公开(公告)日：1986-04-24

    申请号：JP20311484

    申请日：1984-09-28

    Applicant: Fujitsu Ltd

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

    Abstract: PURPOSE: To improve the availability of a communication system by providing a means which generates communication frames and transmits them to a circular communication line, a means which constitutes a loop back path from prescribed one of communication lines of two systems to the other if the abnormality of the signal on one of said communication lines is detected at least, and a means which releases the loop back path.
    CONSTITUTION: Each of communication controllers of terminal stations 2-3, 2-4, and 2-5 is provided with the communication frame generating function and the function which provides a compensation delay time to repeat communication frames, namely, the function by which the communication controller can be a master station. If the abnormality of reception signals from one or both of communication lines of two systems is detected, the loop back path through which the output of one communication line is turned back to the other is constituted in accordance with a prescribed system, and the number of the station which sets the loop back path is indicated in communication frames which are generated or repeated and transmitted. Thus, frames where the station number of reception frames of both systems or the station number of the station itself is indicated are received by the system which transmits loop back signals, and the station releases the loop back path.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过提供生成通信帧并将其发送到圆形通信线路的手段来提高通信系统的可用性，构成从两个系统的规定的一个通信线路到另一个的通信线路的回路的装置，如果异常 至少检测所述通信线路之一上的信号，以及释放回路的装置。 构成：终端站2-3,2-4和2-5的通信控制器中的每一个被提供有通信帧生成功能和提供补偿延迟时间以重复通信帧的功能，即， 通讯控制器可以是主站。 如果检测到来自两个系统的一个或两个通信线路的接收信号的异常，则根据规定的系统构成一个通信线路的输出回到另一个的环回路径， 在生成或重复发送的通信帧中指示设置回路的站。 因此，两个系统的接收帧的站号或站本身的站号的指示帧由发送环回信号的系统接收，并且站释放回路。

    Loop type data transmission system
    59.
    发明专利
    Loop type data transmission system 失效
    环型数据传输系统

    公开(公告)号：JPS6157147A

    公开(公告)日：1986-03-24

    申请号：JP17967284

    申请日：1984-08-29

    Applicant: Fujitsu Ltd

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

    Abstract: PURPOSE: To improve the utilizing efficiency by making the relay delay when supervising and relaying are executed as an active set and a signal is relayed as a spare set identical.
    CONSTITUTION: When a fault is detected by an input signal fault detector 49, a control circuit 32 continues the frame timing received in a frame buffer 44 as it is and uses the timing to constitute a new frame, which is outputted to a transmission line 33 and then to a transmission line 36 via a switch 46, a parallel/serial converter 47, a switch 45 and an output repeater 48. Thus, the transmission signal keeps the timing of the relayed signal frame through a delay circuit 51 so far and each communication controller keeps reception/relay without causing out of synchronism.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过执行监控和中继时的继电器延迟作为有效集合，并将信号作为备用集合进行中继，来提高利用效率。 构成：当输入信号故障检测器49检测到故障时，控制电路32原样继续帧缓冲器44中接收的帧定时，并使用定时构成新的帧，输出到传输线33 然后经由开关46，并行/串行转换器47，开关45和输出中继器48传输到传输线36.因此，传输信号通过延迟电路51将中继的信号帧的定时保持到目前为止，并且每个 通信控制器保持接收/中继而不会导致不同步。

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