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1. 发明专利

JPH07191927A INTER-MODULE TRANSFER SYSTEM AND INFORMATION PROCESSOR FOR THIS SYSTEM 失效
公开(公告)号：JPH07191927A
公开(公告)日：1995-07-28
申请号：JP13408794
申请日：1994-06-16
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： OURA TETSUO , TSUKAGOSHI MASAHITO , SAKO YOSHITO , IKEDA NAOYA , IKEDA MASASHI , TSUCHIYA KAZUAKI
IPC分类号： G06F15/16 , G06F13/00 , G06F15/163 , G06F15/177
摘要： PURPOSE:To provide the inter-module transfer system which efficiently realizes inter-module transfer in an information processor. CONSTITUTION:An information processor 5 consisting of a master module 18, slave modules A3a, B3b, and C3c, and a bus 4 for mutual connection of these modules is provided with interrupt signal lines as to 43 for inter-module transfer ana adopts the constitution where data to be transferred and control information of this data are transferred at a time as one packet. Since data to be transferred and control information of this data are transferred at a time as one packet by this constitution, the control system is made easy and the performance is improved.

2. 发明专利

JPH1141282A DUPLEXED REPEATER 失效
公开(公告)号：JPH1141282A
公开(公告)日：1999-02-12
申请号：JP19171597
申请日：1997-07-17
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： AOKI KENICHI , SAKO YOSHITO
IPC分类号： H04L1/22 , H04L12/28 , H04L12/707 , H04L12/713 , H04L29/14 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a duplexed repeater which enables communication even with a device fault without increasing the number of repeating steps even in the case of switching an auxiliary repeater because of a line fault. SOLUTION: A network system in redundant configuration for mutually connecting plural networks, is composed of four repeaters 11, 21, 31 and 41 and two repeaters 11 and 21. Especially, the repeaters 11, 21, 31 and 41 respectively repeat frames according to a routing table learnt by a routing protocol and are provided with line managing parts 13 and 23 for managing lines for monitoring the connection/disconnection to the networks and the network fault and device managing parts 14 and 24 for managing the entire device and a repetition route at the repeaters 11 and 21, the repeater 11 is utilized as an active device and the repeater 21 is utilized as a reserve device.

3. 发明专利

JPH1097426A SYSTEM FILE UPDATING METHOD IN COMMUNICATION CONTROL UNIT 失效
公开(公告)号：JPH1097426A
公开(公告)日：1998-04-14
申请号：JP24780396
申请日：1996-09-19
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： MOTOKI KENJI , NISHIYAMA TORU , SAKO YOSHITO
IPC分类号： G06F12/16 , G06F9/06 , G06F9/445
摘要： PROBLEM TO BE SOLVED: To update a system file from a terminal by backing up a system file in an external storage medium before updating, transferring the system file after updating from a terminal to update, loading the system file after updating to main memory in the case of the success of updating and loading the system file before updating to the main memory in the case of the failure of updating. SOLUTION: A system file after updating which is transferred from a terminal is written in flash memory 11 via a communication line 14, a line controlling part 13 and a bus 16. When the write is normally finished and updating processing succeeds, its function is updated into what corresponds to the contents of the system file after updating by loading the system file after updating which is stored in the memory 11 to RAM 12 and reactivating a communication control unit. When updating processing fails, the system file which is backed up in a memory card 17 that is inserted into a memory card slot 15 is loaded to the RAM 12, and the communication control unit is reactivated.

4. 发明专利

JPH088969A COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH088969A
公开(公告)日：1996-01-12
申请号：JP13537394
申请日：1994-06-17
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： SATO MASARU , IKEDA MASASHI , TANAKA MASAHIKO , SAKO YOSHITO
IPC分类号： H04M15/00 , H04L12/70 , H04L29/08 , H04L29/14 , H04L12/56
摘要： PURPOSE:To obtain a system having link fault detection capacity and enabling the saving of communication expense by performing a link fault detection only when the transmission/reception of a data packet exist. CONSTITUTION:A call setting procedure part 1 sets a call with a public network and a communication procedure part 3 realizes the transfer of a data packet and a link quality monitoring monitor packet with an opposite connection 2. Each part 1 and 3 shares a flag 4 showing the presence or absence of the transmission/reception of the data packet within arbitrary unit time and a flag 5 showing a call setting state. The absence of the traffic of the data packet is detected and the call with the public network is disconnected. When the traffic of the data packet does not exist, the charging in the public network is suppressed by disconnecting the call with the public network.

5. 发明专利

JPH06103118A FAULT INFORMATION STORE SYSTEM 失效
公开(公告)号：JPH06103118A
公开(公告)日：1994-04-15
申请号：JP16064892
申请日：1992-06-19
申请人： HITACHI LTD , HITACHI SOFTWARE ENG , HITACHI MICOM SYST KK
发明人： NAKAGAWA TSUTOMU , NOYAMA TOMOHIDE , SAKO YOSHITO
IPC分类号： G06F11/34
摘要： PURPOSE:To refer to both of the generation state of every fault classification and the generation sequence of each fault, at the time of investigating the cause of generation of the fault by storing simultaneously not only information by the fault classification but also fault information by a time series. CONSTITUTION:A generation sequence store are 106 for storing a generation sequence of a fault is provided separately. Also, at the time of storing newly fault information, the fault information is stored by adding a proper identifier thereto, and wherever the fault information is stored newly, or generation history of the fault information is updated, the identifier added to the fault information already is stored in a generation sequence store area 106 in order of generation of the fault. In such a way, both of the fault information of every fault classification and the generation sequence of each fault can be stored.

6. 发明专利

JPH05346841A 失效
公开(公告)号：JPH05346841A
公开(公告)日：1993-12-27
申请号：JP15474292
申请日：1992-06-15
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： ISHIKAWA KAZUYA , MANNAKA MASAHIKO , SAKO YOSHITO
IPC分类号： G06F3/14 , G06F3/048 , G06T11/00 , G06F15/72
摘要： PURPOSE:To preserve plotted contents with a little memory capacity and to plot them again by coding the class and argument of a window display function used for display into a window, preserving the execution history of coded information and deleting the execution history which display content is made invalid by being erased or the like. CONSTITUTION:A window display program 102 called by a user program 101 is turned to the information coding the class and argument of the window display function at the time of calling by a history collection processing part 104. The coded information is stored in an execution history table 108 by a storage judgement processing part 106. Next, the window display program 102 calls a window system presentation function 107 with a display processing part 103, displays the picture and returns it to the user program 101. When the hidden window reveals or the like, the information in the execution history table 108 is successively extracted by a history re-execution processing part 105, and picture display content are recovered.

7. 发明专利

JPH02181546A TOKEN RING LAN BRANCH SEPARATION AND CONTROL SYSTEM 失效
公开(公告)号：JPH02181546A
公开(公告)日：1990-07-16
申请号：JP38089
申请日：1989-01-06
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： SAKO YOSHITO , MATSUMURA HISASHI , NIWA TOKUHIRO , MATSUURA FUMIAKI , MISONOO MICHIYO
IPC分类号： H04L12/42
摘要： PURPOSE:To surely separate a defective spar at the time of generation of a spar fault by entering respective spars one by one to specify a defective spar, and at the time of detecting the defective spar, immediately by-passing the defective spar to separate it. CONSTITUTION:When a fault is generated in a spar 4-4 at a portion between a spar control circuit 7-2 and a station(ST) 5-4, the ST 5-4 transmits a fault informing frame(BCN) to inform the generation of the fault in the spar to a control ST 8. At the time of receiving the BCN, the ST 5-3 resets a TNT. Since the fault is generated in the spar 4-4, no BCN flows into the ST 5-4 and the ST 5-5. The control ST 8 separates the spar 4-3. Since the spar 4-3 is separated, the ST 5-3 is entered into the spar 4-4 without passing the ST 5-3, but since the fault is generated in the spar 4-4, the BCN is not reached to the ST 5-4. The control ST 8 separates the spar 4-4.

8. 发明专利

JP2000341321A BAND GUARANTEE TRANSMISSION METHOD AND SYSTEM 失效
公开(公告)号：JP2000341321A
公开(公告)日：2000-12-08
申请号：JP14563299
申请日：1999-05-25
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： SATO MASARU , KANEKO AIICHIRO , IKEDA MASASHI , SAKO YOSHITO
IPC分类号： H04L12/46 , H04L12/28 , H04L12/801 , H04L12/815 , H04L12/863 , H04L12/873 , H04L12/911 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To guarantee a transmission band and to dynamically allocate an available band. SOLUTION: The system is provided with a transmission wait queue table 21 for each traffic flow, a transmission band guarantee table 22 that manages a bandwidth guarantee per unit time, a transmission band tabled 23 that manages the number of octets sent within the unit time, a transmission band wraparound number of times management table 24 that manages number of times of wraparound, and a queue number bit map table 25 that manages which queue data are in existence corresponding to the number of times of wraparound. In the transmission processing of this system, the number of octets sent for each transmission wait queue is managed and a queue with lowest attainment in the transmitted octet number is selected with priority and the selected queue contents are transmitted.

9. 发明专利

JPH0766839A INTER-NETWORK EQUIPMENT 失效
公开(公告)号：JPH0766839A
公开(公告)日：1995-03-10
申请号：JP16244593
申请日：1993-06-30
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： TSUCHIYA KAZUAKI , SAKO YOSHITO , IKEDA MASASHI , OURA TETSUO , IKEDA NAOYA , NISHIJIMA TOMIHISA
IPC分类号： G06F13/00 , H04L12/64
摘要： PURPOSE:To attain efficient relay by transferring each information between the network and a communication module to a corresponding destination based on destination information through the control of transmission reception or storing the information to a buffer and managing addresses of reception and transmission information. CONSTITUTION:Each bus control circuit 104 controls transmission reception via a module bus 109 between networks 108a-108d and communication modules 102a, 102b whose transmission reception is controlled by each port control circuit 107. An information processing circuit 103 transfers the information received by the circuit 107 to a corresponding communication module based on additional destination information and stores it to a buffer 105 while dividing the information into fixed length blocks. Addresses of reception and transmission information in the buffer are managed by transmission reception management tables 116, 117, 148, 149 corresponding to the network and in the port side modules for each block. Thus, the re-transmission due to deficient capacity of the buffer 105 is avoided without reducing the relay processing performance of the packet and the relay efficiency is improved.

10. 发明专利

JPH02290347A TEST METHOD FOR NETWORK SYSTEM AND DUPLICATED ADDRESS 失效
公开(公告)号：JPH02290347A
公开(公告)日：1990-11-30
申请号：JP3156490
申请日：1990-02-14
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： NAKAYASHIKI SUSUMU , KASHIO JIRO , MATSUMURA HISASHI , WADA HIROYUKI , SAKO YOSHITO , MATSUURA FUMIAKI , KAJITANI IHEI
IPC分类号： H04L12/42
摘要： PURPOSE:To prevent residence of a terminal station of the same address in duplicate in the same ring by writing 'No' into a flag information storage device when a duplicated address test frame sent from its own station is received and it is discriminated that no duplicate address exists in the frame. CONSTITUTION:A duplicate address test DAT frame sent from a 1st terminal station is returned to the 1st terminal station being a sender while an address recognition display AC field is rewritten logical '1' with a 2nd terminal station when the 2nd terminal station having the same address as the 1st terminal station exists on its way of circulation of a ring. When the AC of the received DAT frame is logical '1', the 1st terminal station erases the DAT frame circulated in the ring and reaches the bypass state. When the 2nd terminal station in the state of DAC '0' at the downstream of the 1st terminal station receives the DAT frame sent by the 1st terminal station, the 2nd terminal station applies the similar operation as the 1st terminal station. Thus, the 2nd terminal station receives the DAT frame of AC '0' and is resident in the network.

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