专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明专利

JPH0433441A DETOUR SYSTEM FOR PACKET SWITCHING NETWORK 失效
公开(公告)号：JPH0433441A
公开(公告)日：1992-02-04
申请号：JP13830990
申请日：1990-05-30
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： KIMOTO ATSUSHI , SAKAI HIROSHIGE , SUZUKI MICHIO , IKEDA MASASHI
IPC分类号： H04L12/705
摘要： PURPOSE:To reduce a transfer delay time in a packet switching network due to occurrence of a ping pong phenomenon by bypassing a ping pong occurrence path for a succeeding packet when the ping pong phenomenon takes place and sending the packet to another relay path. CONSTITUTION:When a node A sends a packet 1 to a node F via a node B, a node C is going to interrupt a reception packet to the node F via a relay line (f), since the relay line (f) is faulty, '1' is added to number of relay 3 in the packet 1 and sends back the packet 1 to the node B. The node B reference a ping pong return flag 2 of the packet 1 to detect the occurrence of a ping pong phenomenon, then the relay transmission to the node C relating to a packet to the node F is inhibited on a routing table, '1' is added to number of relay 3 in the packet 1 and the packet 1 is sent to a node E via a relay line (b). Thus, the packet 1 is delivered to the node F being a destination via the node E. Thus, the packet transfer delay time in a packet switching network is reduced.

92. 发明专利

JPH0421147A NETWORK CONTROL SYSTEM 失效
公开(公告)号：JPH0421147A
公开(公告)日：1992-01-24
申请号：JP12412290
申请日：1990-05-16
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： SUZUKI MICHIO , SASAKI RYOICHI , NAGAI YASUHIKO , KAGEI TAKASHI , TANAKA YASUHIRO , MIZUGUCHI KEIZO , OTA KATSUMI , SATO TOSHIO , NOZAKI SHINSUKE , TAKEO TAKAYUKI
IPC分类号： G06F13/00 , H04L12/00 , H04L12/24 , H04L12/26 , H04L29/02 , H04L29/14
摘要： PURPOSE:To reduce the redundancy of information to be exchanged by allocating different identifies (IDs) to the same object to be controlled and storing an ID string to be abbreviated in a memory to form network control information. CONSTITUTION:A control agent for transmitting control information is found out at first, and then plural objects to be controlled are constituted as hierarchical tree structure based upon prescribed master-slave relation. Respectively different IDs are allocated to respective controlled objects, an abbreviated object corresponding to the control agent is specified and stored in an internal memory. Then, network control information is formed by using the abbreviated IDs to which abbreviated IDs are added. The control information can be specified as a control object instance by using the ID included in the control information and the ID stored in the memory and transmitted to the control agent. Since the expression of the ID is shortened, the quantity of transferred information between a control manager and the control agent can be reduced and the performance of control operation transmitting processing and analytical processing for reception can be improved.

93. 发明专利

JPH0397330A NETWORK FAULT DIAGNOSTIC SYSTEM 失效
公开(公告)号：JPH0397330A
公开(公告)日：1991-04-23
申请号：JP23282689
申请日：1989-09-11
申请人： HITACHI LTD , HITACHI INF & CONTROL SYST
发明人： SHINNAI KOSUKE , SASAKI RYOICHI , NIINOBE SADAO , SUZUKI MICHIO , AKIBA MASAO
IPC分类号： H04L12/24 , H04L12/26
摘要： PURPOSE:To estimate a faulty location immediately at a fault by generating a table representing the relation of connection between equipments in a network, calculating in advance the effecting range of the fault at the occurrence of the fault at every equipment and estimating the fault location based thereon. CONSTITUTION:A diagnostic processing section 21 reads the device constitution information 44 stored in an equipment constitution file 28 to group the constitution equipments. Then an equipment characteristic analysis section 23 classifies the characteristic of the connection of the constitution equipments or the like and the analysis result by an effect range analysis section 22 is stored in a memory in the inside. Moreover, a diagnostic rule generating section 55 generates a diagnostic rule 46 and stores it in a diagnostic rule file 29. Thus, the constitution of a network 33 is diagnosed preliminary and fault information 42 from a fault detection deciding section 31 is sent to a logic processing section 25 in such a manner, and then the fault diagnosis is implemented base on the information and the diagnostic rule 46 extracted from the diagnostic rule file 29.

94. 发明专利

JPH02277334A CONTROL SYSTEM FOR CONSTITUTED INFORMATION OF INFORMATION NETWORK 失效
公开(公告)号：JPH02277334A
公开(公告)日：1990-11-13
申请号：JP9735189
申请日：1989-04-19
申请人： HITACHI LTD , HITACHI INFORMATION NETWORK
发明人： SUZUKI MICHIO , SASAKI RYOICHI , SHINNAI KOSUKE , HAYASHI MASAYUKI , KAGEI TAKASHI , MIZUGUCHI KEIZO
IPC分类号： H04L12/00
摘要： PURPOSE:To easily control constituted information of the entire network by reporting constituted information to an integrated network controller. CONSTITUTION:A unifying controller 100 requests the transmission of the constituted information provided to sub-network management equipments 200-500. A transmission request and the constitution information are received by communication control programs 101a-d. The received constituted information of each subnetwork is given to a constituted information edit program 102. The program 102 defines it to which exchange or application device a subscriber line port of a multiplex allotting distribution equipment connects. A port list of a subscriber line is displayed on a display device 10-2 by using a man-machine interface control program 104. The inputted value is checked by a constituted information check program 103 and when the processing is finished for all exchanges, this processing is finished.

95. 发明专利

JPH02116241A PACKET EXCHANGING NETWORK CONSTITUTING SYSTEM 失效
公开(公告)号：JPH02116241A
公开(公告)日：1990-04-27
申请号：JP26802588
申请日：1988-10-26
申请人： HITACHI LTD
发明人： SUZUKI MICHIO , SASAKI RYOICHI
IPC分类号： H04L12/70 , H04L12/713
摘要： PURPOSE:To improve the reliability of a tree-shaped network for the trouble of the exchange module of a route by arranging plural exchange switch modules which become the route of the tree-shaped network, dispersing and arranging the exchange modules and connecting with a line mutually. CONSTITUTION:Four exchange modules 1 to 4 of the route are provided, respective exchange modules are mutually connected completely in a mesh shape, exchange modules 100 to 400 are connected under respective exchange modules 1 to 4 and a subscriber is connected under these exchange modules. When an exchange module 1 receives the data, for example, from an exchange module 100 to an exchange module 300, ordinarily, the exchange module 2 transmitted through a line l9 to an exchange module 2 is transmitted to the exchange module 300 by the line l9. Thus, for example, even when the exchange module 2 becomes a trouble, the communication between exchange modules 100, 200 and 400 can be carried out.

96. 发明专利

JPH0232643A RELAY LOOP DETOURING SYSTEM FOR PACKET SWITCHING NETWORK 失效
公开(公告)号：JPH0232643A
公开(公告)日：1990-02-02
申请号：JP18272288
申请日：1988-07-21
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： KIMOTO ATSUSHI , SUZUKI MICHIO , IKEDA MASASHI
IPC分类号： H04L12/24 , H04L12/705 , H04L29/14
摘要： PURPOSE:To enable communication to be continued by transmitting a relay loop detecting packet, judging the generation of a relay loop by the return of the packet, and informing a detour to another relay route to each node by transmitting a relay loop information packet. CONSTITUTION:A certain relay node transmits the relay loop detecting packet 2 at the time of generating the excess of the number of times of relay or a residence time. When the realy loop is detected by the return of the packet after the circulation of the relay loop, the relay loop information packet 3 is transmitted to all the nodes (A-F) of the relay loop, and transmission to the relay route which becomes the relay loop is prohibited at each node. In such a way, since a following packet detours the relay loop and performs the transmission to another relay route, the communication can be continued.

97. 发明专利

JPH01194629A COMMUNICATION NETWORK CONSTITUTION SWITCHING SYSTEM 失效
公开(公告)号：JPH01194629A
公开(公告)日：1989-08-04
申请号：JP1706888
申请日：1988-01-29
申请人： HITACHI LTD
发明人： OHASHI AKIHIRO , NAKAMURA TSUTOMU , SUZUKI MICHIO , SASAKI RYOICHI , SATO KUNIHIKO
摘要： PURPOSE:To promptly restore an incommunicable condition, and to enhance the reliability of a communication network by switching a network constituting surface currently in use with a re-switching instruction from a network control device to a communication node after the generation of the incommunicable condition due to network constituting surface inconsistency confirmed with each communication node at the time of simultaneous generation of fault-time switching and time switching. CONSTITUTION:When the fault is generated in the communication network, a network control device 100 transmits switching instructions 80 and 81 so as to switch the network constituting surface from 1 to a network constituting surface 1-1 at the time of the fault. Here, in the communication node 1, the switching instruction 80 is notified before the generation of network constitution switching 50 (the switching to the network constituting surface) due to the operational time, and in the communication node 2, when the switching instruction 81 is notified after the generation of the network constitution switching 50, the network constituting surface inconsistency (the mixture of the network constituting surfaces 2 and 1-1) recognized by the communication nodes 1 and 2 is generated. There, the network control device 100 recognizes the time switching 50 generation by a time control by the network control device 100 itself, and re-switching instructions 82 and 83 are transmitted so as to be switched to the network constituting surface 1 at the time of the fault, namely, to the network constituting surface 2-1.

98. 发明专利

JPS63261937A COMMUNICATION NETWORK 失效
公开(公告)号：JPS63261937A
公开(公告)日：1988-10-28
申请号：JP9511487
申请日：1987-04-20
申请人： HITACHI LTD
发明人： HOSHI TORU , MIZUHARA NOBORU , SUZUKI MICHIO , KASHIO JIRO
摘要： PURPOSE:To construct a local area network without wiring a new cable by controlling the formation of a loop circuit, which cascade-connects plural data terminals in a trunk circuit connected to an exchange. CONSTITUTION:The data terminals (DTE) 102-1-102-m are connected to the trunk 105 by the control of an exchange control processor (CP) 120 through interfaces TEL and LIF and m-pieces of channels of a switching network SW 101. The trunk 105 is provided with a demultiplexer 208 to process a mutiplexed signal from a highway 207, and a multiplexer 209 to multiplex an output signal to the highway 207, and the loop circuits LP 210-1-210-l (m

99. 发明专利

JPS63219247A SYSTEM FOR MANAGING NETWORK STATE OF PACKET SWITCHING NETWORK 失效
公开(公告)号：JPS63219247A
公开(公告)日：1988-09-12
申请号：JP5194487
申请日：1987-03-09
申请人： HITACHI LTD , HITACHI SEIBU SOFTWARE KK
发明人： SUZUKI MICHIO , KASHIO JIRO , KANO TAKASHI , TANAKA MASAHIKO
摘要： PURPOSE:To evade discrepancy between a network state recognized by a centralized control station and an actual network state from being generated, by setting a normal state when a required condition is satisfied after receiving the recovery of a line from a faulty state to the normal state by the centralized control station. CONSTITUTION:For example, the fault of the line l1 is reported from a packet switching machine 5 to the centralized control station 4. In this case, a report from a packet switching machine 6 passes through a packet switching machine 9, and the generation of the fault of the line l3 on which the fault has been generated already is not received by the station 4. And after the recovery of the line l1 is reported, the station 4 sets a timer start normal state 3, and sets the normal state of the line l1 after the lapse of a timer time. Therefore, it is possible to evade the discrepancy between the network state recognized by the centralized control station and the actual network state due to the invert of an arrival order from being generated even when the line l3 is recovered to the normal state during that time.

100. 发明专利

JPS63181544A NETWORK CONTROLLING SYSTEM 失效
公开(公告)号：JPS63181544A
公开(公告)日：1988-07-26
申请号：JP1241187
申请日：1987-01-23
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： SUZUKI MICHIO , KASHIO JIRO , TSUNODA TOMOAKI , AKIYAMA FUMIO , IDO NOBUHIKO
IPC分类号： H04M3/00 , H04J3/14 , H04L12/00 , H04L12/24 , H04L12/26
摘要： PURPOSE:To enable the control of the network of whole multiplexer by constituting a control switching network by applying a switchboard having the user interface of the multiplexer and a local control function interface and executing communication between a controlling device and the multiplexer through the control switching network. CONSTITUTION:A centralized controlling device 50 sets the address of the multiplexer 2 in the destination of a packet consisting of controlled information and transmits it to the switching board 9. The switching board 9 selects a transmission line l3-5, for example, from the destination address of the received packet from the centralized controlling device and transmits it, so that controlled packet reaches the switching board 8 via a communication channel 14 in a relay transmission line 5. The switching board 8 recognizes that the destination address of the packet is the multiplexer 2 and transmits the packet to a control unit 11 through a local control interface 17. In the same way, the controlled led information from the multiplexer 2 is transmitted to the centralized controlling device 50 via the switching boards 8 and 9.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式