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1. 发明专利

JPS60162330A LOOP COMMUNICATION SYSTEM 失效
公开(公告)号：JPS60162330A
公开(公告)日：1985-08-24
申请号：JP1700484
申请日：1984-02-03
申请人： HITACHI LTD , HITACHI CABLE
发明人： MATSUI SUSUMU , AOKI TERUAKI , YAGIYUU KAZUO , HARAKAWA TAKESHI
IPC分类号： H04L12/423
摘要： PURPOSE:To perform instantaneously the transmission/reception processing of signals with no waiting mode by transmitting a control signal to a node connect to a terminal from a node connected to a host computer and controlling the timing between transmission and reception of a frame. CONSTITUTION:Data communication is carried out between a host computuer 1 and terminals A-C respectively via a node 3 at the host side, a loop transmission line 8 and nodes 5-1-5-3 at the terminal side. Processing 10 is carried out at an interval ti for times ts-1-ts-3 when the first fixed length of a frame is sent. The first frame is regarded as control signals CS-1-CS-3 sent from the computer 1 at nodes 5-1-5-3. Then the reception processing 11 is carried out. The storage of signals is started immediately after the end of the processing 11. The transmission processing 13 is carried out immediately when the time tp elapses since the processing 12 is through with nodes 5-1-5-3. Then the reception processing 14 is carried out immediately at the node 3. Then transmission processing 15 is carried out at this time point since a frame of a fixed length to be sent to the terminal is stored.

2. 发明专利

JPS62169543A NETWORK EXTENDING SYSTEM 失效
公开(公告)号：JPS62169543A
公开(公告)日：1987-07-25
申请号：JP1005086
申请日：1986-01-22
申请人： HITACHI LTD
发明人： NAKAYASHIKI SUSUMU , KASHIO JIRO , HARAKAWA TAKESHI , TOTSUGI YOSHINORI
IPC分类号： H04L12/437
摘要： PURPOSE:To perform a test job without affecting a normal network by forming a test ring to a network and confirming the normalcy of the communication of a medium access control (MAC) level via said test ring. CONSTITUTION:For a line concentrator 1 which has no rise yet, the communication controllers 8, 9, etc., are bypassed from a transmission line 3 so that the received signals can be directly relayed. While a test ring 31 is formed between a follower communication controller 8 and a line concentrator 1-B which has a new rise for test of nromalcy of the corresponding section for a line concentrator 1-A which has a rise already and contains a local ring 30. The ring 31 is independent of the ring 30 kept under a working state and therefore the controller 8 can test the normalcy of the ring 31 without affecting the communication which is under execution via the ring 30.

3. 发明专利

JPS61187446A FAULT DISCONNECTING SYSTEM FOR LINE CONCENTRATOR 失效
公开(公告)号：JPS61187446A
公开(公告)日：1986-08-21
申请号：JP2623885
申请日：1985-02-15
申请人： HITACHI LTD
发明人： NAKAYASHIKI SUSUMU , HARAKAWA TAKESHI , FUSE MASAHIRO
IPC分类号： H04L12/437
摘要： PURPOSE:To disconnect a faulty port even plural stations ST are connected to a port by diagnosing ports in the unit of one port to eliminate the need for a device to give a port number. CONSTITUTION:Ring communication adaptors 2-1,...,2-8 of a communication system are connected to a line concentrator through a closed communication ring (transmission line). Data terminal devices 3-1,...,3-8 are communicated together by being connected to ring communication adaptors 2-1,...,2-8. A ring including one port to be diagnosed only is formed, a diagnostic frame is set to supervise the reception state. When the signal is not received within a prescribed time, the said port is stored as a fault and when received, it is stored as normal. The diagnosed port is disconnected from the ring to check the presence of undiagnosed port and the diagnosis is repeated in the unit of a diagnosed port. When the diagnosis is finished, only the ports discriminated as normal are included in the ring, a diagnostic frame is sent to supervise the reception of the said frame.

4. 发明专利

JPS61187444A METHOD FOR DIAGNOSING STATION 失效
公开(公告)号：JPS61187444A
公开(公告)日：1986-08-21
申请号：JP2623785
申请日：1985-02-15
申请人： HITACHI LTD
发明人： NAKAYASHIKI SUSUMU , HARAKAWA TAKESHI , TOTSUGI YOSHINORI , WADA HIROYUKI
IPC分类号： H04L12/42
摘要： PURPOSE:To attain diagnosis of a diagnosed station (internal ST) independently of normality/abnormity of a standby system transmission line by forming a ring form transmission line (internal transmission line) including the internal ST in a line concentrator and diagnosing the internal ST through the internal transmission line. CONSTITUTION:Port disconnecting switches 4-1,...,4-3 disconnecting ports 3-1,...,3-3 from a transmission line 1 and internal ring forming switches 5-1, 5-2 to form a ring (internal ring) closed in the said line concentrator are controlled through a control signal line 6 from a main internal ST11. When the internal ring is formed, the diagnosed internal ST sends a diagnostic frame to supervise the reception. When a diagnostic frame is not normally received, it is diagnosed that the internal ring system including the own internal ST has a fault, a backup system is provided and replaced with the active system.

5. 发明专利

JPS61187443A METHOD FOR SYNCHRONIZING OPERATION OF STATION 失效
公开(公告)号：JPS61187443A
公开(公告)日：1986-08-21
申请号：JP2623585
申请日：1985-02-15
申请人： HITACHI LTD
发明人： NAKAYASHIKI SUSUMU , HARAKAWA TAKESHI , FUSE MASAHIRO
摘要： PURPOSE:To synchronize simultaneously stations (ST) operated asynchronously together by including a sender station ST identifier (e.g., address) to a fault notice frame, stopping the transmission of the own ST when it receives a fault notice frame in the said identifier larger than the identifier of the own ST and relaying the said received fault notice frame. CONSTITUTION:An ST detecting a fault sends a fault generation notice frame (FR1) to a ring of both systems. The identifier (SA14) of the received FR1 and the identifier (own ST address) of the own ST are compared, and when the received identifier is larger than the own identifier, the transmission of the FR1 is stopped and the system enters the state of a fault countermeasure control start command frame (FR2) waiting. When the FR1 having the identifier equal to the own identifier is received, the FR2 is sent to both system rings. The other STs starts fault countermeasure by receiving the FR2.

6. 发明专利

JPS61187441A CONSTITUTION CONTROL SYSTEM FOR RING NETWORK 失效
公开(公告)号：JPS61187441A
公开(公告)日：1986-08-21
申请号：JP2623685
申请日：1985-02-15
申请人： HITACHI LTD
发明人： NAKAYASHIKI SUSUMU , KASHIO JIRO , HARAKAWA TAKESHI
IPC分类号： H04L12/437
摘要： PURPOSE:To constitute a network with high reliability by allowing each station ST to output a fault notice frame BCN if a fault takes place in an active system ring and allowing an ST receiving the BCN to output the 2nd BCN so that the ST being the next downstream of the fault in the active system ring applied the 1st loopback and the ST being the next upperstream to the fault applies the 2nd loopback. CONSTITUTION:An ST detecting a fault of an active system transmission line starts a BCN 1 reception monitor timer (T1) to send a BCN 1 to the active system transmission line to supervise the reception of the BCN 1. When the time of the timer T1 is over, the 1st loopback is applied. When the BCN 1 is received before the timer T1 is over, a BCN 2 reception monitor timer (T2) is started to send a BCN 2 to a standby transmission line to supervise the reception of the BCN 2 and when the time of the timer T2 is over, the 2nd loopback is applied.

7. 发明专利

JPS6125346A Local inter-network communication system 失效
标题翻译：本地互联网通信系统
公开(公告)号：JPS6125346A
公开(公告)日：1986-02-04
申请号：JP14549484
申请日：1984-07-13
申请人： Hitachi Ltd
发明人： NAKAYASHIKI SUSUMU , KASHIO JIRO , HARAKAWA TAKESHI
IPC分类号： H04L12/28 , H04L12/66
摘要： PURPOSE: To manage unitarily a network while allowing each station connected to a different local network not to grasp a station network number by converting a destination address and a sender address of a communication frame relayed by a repeater.
CONSTITUTION: The repeater 3 is connected to a reference network 1 of a local inter-network communication system, and local ring networks 2 having local ring numbers #5, #7, #8 and local ring networks 2 having local ring numbers #1, #6, #9 are connected to each repeaer 3. Stations ST4, 5 are connected to the local ring network 2 and ST numbers #25, 21 are given respectively to the ST 4, 5. Then the destination address and the sender address of the communication frame relayed by each repeater 3 are converted and the network is managed unitarily while each ST connected to different local network does not grasp the local network number.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过转换中继器中继的通信帧的目的地址和发送方地址，一体化管理网络，同时允许连接到不同本地网络的每个站点不能掌握站点网络号码。构成：中继器3连接到本地网络间通信系统的参考网络1，具有本地环号＃5，＃7，＃8的本地环网2和本地环号＃1的本地环网2，＃6，＃9连接到各个中继器3.站ST4,5连接到本地环网2，ST号＃25,21分别给予ST4,5。然后，目的地地址和发送方地址由每个中继器3中继的通信帧被转换，并且网络被一体地管理，而连接到不同本地网络的每个ST不掌握本地网络号。

8. 发明专利

JPS6111870A Channel device 失效
标题翻译：频道设备
公开(公告)号：JPS6111870A
公开(公告)日：1986-01-20
申请号：JP16378984
申请日：1984-08-06
申请人： Hitachi Ltd
发明人： OGAWA TETSUJI , HARAKAWA TAKESHI , OKUDA HIRONARI , MORIKAWA TAKASHI
IPC分类号： G06F13/12
CPC分类号： G06F13/122
摘要： PURPOSE:To inform data length information to a CPU while guaranteeing the complete transmissibility of data by storing information indicating the number of data transferred on the basis of a command specifying a command chain in a main storage device. CONSTITUTION:A flag detecting circuit 46 is connected to a data register 30, and at the end of reading of a channel command word (CCW), the validity of a program control interruption flag (PCIF) in the CCW loaded to the data register 30 is tested by the flag detecting circuit 46. When detecting that the PCIF is ''1'', the circuit 46 informs the status to a channel sequence control part 25, which stores the residual count left in a count register 34 in a CCW counting area. The data length of actually transferred data can be detected by making the program refer the area.
摘要翻译：目的：通过存储指示在主存储设备中指定命令链的命令的传送数据的信息，来保证数据的完整传输，从而将数据长度信息通知给CPU。构成：标志检测电路46连接到数据寄存器30，并且在读取通道命令字（CCW）结束时，加载到数据寄存器30的CCW中的程序控制中断标志（PCIF）的有效性由标志检测电路46进行测试。当检测到PCIF为“1”时，电路46通知信道序列控制部分25，该信道序列控制部分25将计数寄存器34中剩余的剩余计数存储在CCW计数中区。可以通过使程序参考该区域来检测实际传送的数据的数据长度。

9. 发明专利

JPS6042960A LOOP TRANSMISSION SYSTEM 失效
公开(公告)号：JPS6042960A
公开(公告)日：1985-03-07
申请号：JP15014183
申请日：1983-08-19
申请人： HITACHI LTD
发明人： YAGIYUU KAZUO , MATSUI SUSUMU , NAKASE HIROMU , HARAKAWA TAKESHI
IPC分类号： H04L12/42
摘要： PURPOSE:To take a basic procedure terminal device which is different from each kind of terminal devices part in a network easily by allowing the network to relay all signals corresponded among terminals connected to this system in the unit of frames having a short fixed length when the terminals make communication mutually. CONSTITUTION:A frame processing section 3 sections all signals from a subscriber (SUB: terminal device or host computer concretely) into a fixed length, adds a header to each and trasmits each to an opposite station ST as a frame. Further, the header part is eliminated from the frame transmitted from the opposite station and outputs the result to the subscriber SUB without intermission. The frame processing section of each station, after the internal initialization is finished, starts a DMA for the frame reception from each subscriber and the loop. When the signal having a designated length is received, the DMA end interruption is generated. The nixt reception buffer address and data length are set in the program started by the DMA interruption and the DMA is restarted.

10. 发明专利

JPS59216344A Diagnostic system of living/death of data switching network 失效
标题翻译：数据切换网络的生命/死亡诊断系统
公开(公告)号：JPS59216344A
公开(公告)日：1984-12-06
申请号：JP9066183
申请日：1983-05-25
申请人： Hitachi Ltd
发明人： ISHIKAWA KAZUFUMI , HARAKAWA TAKESHI , NAKAYASHIKI SUSUMU
IPC分类号： H04L12/26 , H04L11/00
CPC分类号： H04L43/0817
摘要： PURPOSE:To diagnose the whole of a network as dead or living concentratedly and efficiently by performing this diagnosis stepwise in a network monitor node. CONSTITUTION:A local node managing part 4 in a terminal connection node 2 diagnoses terminal control parts 6-1-6-3 as living or dead and sets results to a register 5 for storing living/death diagnostic results of terminal control parts. A node living/death diagnostic response part 7 is connected to this register 5 and a loop cable 3 and gathers living/death diagnostic results of terminal control parts in response to the living/death diagnosis from a network monitor node 1 and reports them to the network monitor node 1. A node living/death diagnosis control part 8 in the network monitor node 1 consists of a node living/death diagnostic command control circuit 10 and a display command circuit 11 and is provided with a function to perform the node living/death diagnosis for terminal connection nodes 2 successively as well as a function to instruct the circuit 11 that node living/death diagnostic results reported from node living/death diagnostic response parts of individual terminal connection nodes 2 are displayed on a display part 9.
摘要翻译：目的：通过在网络监控节点中逐步执行此诊断，将网络中的整个网络诊断死亡或集中生活。构成：终端连接节点2中的本地节点管理部分4将终端控制部分6-1-6-3诊断为死亡或死亡，并将结果设置为用于存储终端控制部分的生死亡诊断结果的寄存器5。节点居住/死亡诊断响应部分7连接到该寄存器5和环路电缆3，并响应于来自网络监视器节点1的生死亡诊断而收集终端控制部分的生死亡诊断结果，并将其报告给网络监视节点1.网络监视节点1中的节点居住/死亡诊断控制部8由节点生命/死亡诊断指令控制电路10和显示命令电路11构成，具有执行节点生存/ 终端连接节点2的死亡诊断以及指示电路11的功能，在显示部9上显示节点生命/死亡诊断结果从各个终端连接节点2的节点居住/死亡诊断响应部分报告的功能。

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