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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.
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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.
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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&JapioAbstract 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。
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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&JapioAbstract 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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公开(公告)号：JPS60128743A
公开(公告)日：1985-07-09
申请号：JP23726583
申请日：1983-12-16
Applicant: FUJITSU LTD
Inventor： NAKAMURA OSAMU , MITA TERUYOSHI , KITANO YOSHIHIRO , NAKAHARA YASUHIRO , NEGISHI HITOSHI
IPC: H04B10/11
Abstract: PURPOSE:To reconstitute a highway without disconnecting nodes by using transmission lines bi-directionally and using a connected transmission line to consitute a communication bus if the transmission line of a current system or a stand-by system is connected to nodes adjacent to a disconnection position of the transmission line though the transmission line is disconnected. CONSTITUTION:In case of transmission of light to the transmission line, a prism 13 is pulled upward as shown in a figure (a), and an electric input signal is applied to a light emitting element 15, and this signal is converted to light and is transmitted to a transmission line 17. The light emitted to the side opposite to the transmission line can be monitored by a photodetector 16. In case of reception of light from the transmission line, the prism is pulled downward as shown in a figure (b). Then, the light from the transmission line 17 reaches the photodetector 16 through a route indicated by a solid line and is converted to an electric signal. This constitution is placed in positions 19, 20, 21, and 22 to use the optical transmission line in bi-directionally.
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Patent Agency Ranking
公开(公告)号：JPS60128740A
公开(公告)日：1985-07-09
申请号：JP23726483
申请日：1983-12-16
Applicant: FUJITSU LTD
Inventor： KITANO YOSHIHIRO , MITA TERUYOSHI , NAKAHARA YASUHIRO , NEGISHI HITOSHI , NAKAMURA OSAMU
Abstract: PURPOSE:To shorten the retransmission time by adding a transmission packet order area into a packet format and providing a packet switching device with a packet order checking function and reproducing data transmission if data is dropped-out. CONSTITUTION:The packet transmission order area and a dropped-out packet number informing area are provided in data format packets flowed on a transmission line. Transmission data transmitted from a subsystem 23 is stored in a transmission packet buffer memory 20 of the packet switching device, and a subsystem control circuit 17 transmits a packet transmission request signal to a common control circuit 15. The common control circuit 15 detects an unused packet from frames passing data buffer registers 4, 5, 6, and 8 and adds the transmission packet order and transmits it onto the transmission line through a repeater 2. In the reception side, drop-out of coming packets is checked by a packet order checking circuit 18; and if drop-out is detected, retransmission request and the number of the packet whose retransmission is desired are reported to transmission/reception packet switching devices, and the transmission- packet switching device transmits desired data.
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公开(公告)号：JPS60128730A
公开(公告)日：1985-07-09
申请号：JP23726883
申请日：1983-12-16
Applicant: FUJITSU LTD
Inventor： NEGISHI HITOSHI , MITA TERUYOSHI , KITANO YOSHIHIRO , NAKAHARA YASUHIRO , NAKAMURA OSAMU
IPC: H04B10/07 , G01M11/00 , H04B3/46 , H04B10/00 , H04B10/032 , H04B10/035 , H04B10/077 , H04B10/079 , H04B10/275
Abstract: PURPOSE:To make investigations for setting again an optical cable unnecessary by transmitting a transmission line diagnostic command to a node whose abnormality is recognized in transmission line check of a data highway and detecting an erroneous set position of the transmission line and an erroneous connection order in accordance with the response. CONSTITUTION:A highway supervisory device (SV) transmits commands to operate line switchs (LSW)3, 6 and 7 of individual nodes and diagnoses the transmission line in a current system, a stand-by system, and a degnerated mode in order. If erroneous connection of the transmission line is detected as the result of diagnosis of the transmission line, the device SV releases loop back and instructs the pertinent node to by-pass both systems, and a test frame is transmitted from a system L0, and input sides of systems L0 and L1 are monitored to find the position of erroneous connection.
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公开(公告)号：JPS6010841A
公开(公告)日：1985-01-21
申请号：JP11730383
申请日：1983-06-29
Applicant: FUJITSU LTD
Inventor： KITANO YOSHIHIRO , MITA TERUYOSHI , NAKAHARA YASUHIRO , NAKAMURA OSAMU , NEGISHI HITOSHI
Abstract: PURPOSE:To attain detection even with duplicated node addresses by conducting address check of station nodes sequentially by an address check command from supervising node. CONSTITUTION:When a power source is applied on a data highway system, the supervising node SV starts a microprocessor so as to conduct an initial program load. When the operation is finished, the node address check command is transmitted from a command register. The node address is checked by using the response of the station node address from station nodes STO-STn. When the address check is finished, since the supervising node SV gives a neglecting release instruction to all the stations nodes STO-STn, all the station nodes STO-STn receive the next command.
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公开(公告)号：JPS593945B2
公开(公告)日：1984-01-26
申请号：JP5141178
申请日：1978-04-28
Applicant: Fujitsu Ltd
Inventor： INOE KOZO , AKAMATSU TAKESHI , NAKAMURA OSAMU , GOTO JUNJIRO
IPC: C03B37/023 , C03B37/027 , G02B6/00
CPC classification number: C03B37/023 , C03B2201/70
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公开(公告)号：JPS58170251A
公开(公告)日：1983-10-06
申请号：JP5297182
申请日：1982-03-31
Applicant: FUJITSU LTD
Inventor： NAKAMURA OSAMU , MITA TERUYOSHI
Abstract: PURPOSE:To detect simply an ineffective packet, by reading a transmitted address added to the packet and collating it with the state of each station. CONSTITUTION:Stations 2-7 are connected to a transmission line of loop form. An address is given to each station. A monitor SV1 detects and deletes ineffective packets which exist on the transmission line and are not assigned. The monitor is provided with an address table which records whether or not each station receives a packet. The monitoring device reads the address to be transmitted for the packet transmitted on the transmission line and compares it with the data in the address table. The packet having no correspondence possible for reception is made ineffective. Since the monitoring device monitors the address to be transmitted in the packet only, the monitoring device makes normal operation independently of the content of the packet.
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