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91. 发明专利

JPS63305643A PACKET NETWORK CONFIGURATION SYSTEM 失效
公开(公告)号：JPS63305643A
公开(公告)日：1988-12-13
申请号：JP14146387
申请日：1987-06-08
申请人： HITACHI LTD
发明人： HAGIWARA MASAYOSHI , SUZUKI MICHIO , SASAKI RYOICHI , SUGANO MINORU , HORIKI AKIRA
IPC分类号： H04L12/715
摘要： PURPOSE:To obtain a system facilitating network expansion or configuration changes by connecting a packet data terminal, a packet exchange and a voice communication equipment such as a telephone set to a basic replacement module called the constitution unit and interconnecting the constitution units so as to be as the hierarchical tree structure selecting the number of stages of the hierarchy in response to the scale of the network. CONSTITUTION:A subscriber terminal 1 comprising a packet data terminal a packet exchange or a voice communication equipment such as telephone set is connected to a constitution unit 4 comprising a basic exchange module. The constitution units 4 are interconnected so as to be of hierarchy tree structure and the number of stages of the hierarchy is selected in response to the scale of the network. A subscriber address 3 is given to be arranged for each constituting unit 4 connecting to the subscriber terminal 1 and its length depends on the number of stages of the hierarchy of the constitution units 4. When it is required to accommodate a new subscriber terminal to the network, for example, the constitution unit 6 is connected newly to the subscriber terminal allocated line of the constitution unit 4 of the lowest hierarchy order and the new subscriber terminal, is accommodated in the constitution unit 4.

92. 发明专利

JPS63217744A DIGITAL LINE NETWORK CONTROL SYSTEM 失效
公开(公告)号：JPS63217744A
公开(公告)日：1988-09-09
申请号：JP5003087
申请日：1987-03-06
申请人： HITACHI LTD
发明人： SASAKI RYOICHI , NAKAMURA TSUTOMU , SUZUKI MICHIO , SHINNAI KOSUKE
IPC分类号： H04M3/22 , H04J3/14 , H04L12/24 , H04L12/26 , H04M3/00
摘要： PURPOSE:To optimize the reconstitution of high speed digital network by generating an optimum constitution table corresponding to a fault of a relay line by a network management unit and distributing the table to each multiplexer. CONSTITUTION:The network management unit 500 generates optimum network constitution information at normal state and at relay line fault. Then the network constitution information by each fault location is distributed to each multiplexer through a management information network 600. Then the multiplexer stores the bits of network constitution information used at normal state to a memory of the multiplexers 100, 200 as constitution tables 160, 260. On the other hand, the bits of network constitution information at a fault state are stored in floppy disk drivers 180, 280 connected to the multiplexers 100, 200. When the unit 500 detects a fault and identifies the faulty line, the multiplexers 100, 200, according to the command of the unit 500, the bits of network reconstitution information corresponding to the line fault are loaded to the memory in the multiplexers 100, 200 by the drivers 180, 280 as tables 160, 260. The network is reconstituted by the procedure above.

93. 发明专利

JPS63155836A NETWORK FAULT DEMARCATING SYSTEM 失效
公开(公告)号：JPS63155836A
公开(公告)日：1988-06-29
申请号：JP30130386
申请日：1986-12-19
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： MORITA HIROSHI , NAKAMURA TSUTOMU , SASAKI RYOICHI
摘要： PURPOSE:To quickly demarcate a fault by comparing a fault information table by a master station, by providing a frame for demarcating a fault, providing plural routing tables being independent from a data frame, and using them alternately. CONSTITUTION:A control frame for demarcating a fault passes through each node A-G having a fault demarcating function and a communication line 108 in accordance with a route which has been set in the beginning, and demarcates a fault. The node A is master station for managing the whole network, and has functions of a transmission of a frame for demarcating a fault, a judgement of the generation of a fault, and poling to a non-answer node. The nodes B-G are slave stations, and receive the fault demarcating frame from the master station and return an answer to the master station. Also, in case the frame from the master station not come by monitoring a timer, it is decided that a fault has been generated before the own node, and it is informed to the master station.

94. 发明专利

JPS63115436A DATA TRANSMISSION CONTROL SYSTEM 失效
公开(公告)号：JPS63115436A
公开(公告)日：1988-05-20
申请号：JP26066886
申请日：1986-11-04
申请人： HITACHI LTD
发明人： NAKAMURA TSUTOMU , SHINNAI KOSUKE , SASAKI RYOICHI
IPC分类号： H04L29/02 , H04B7/15 , H04L13/00
摘要： PURPOSE:To minimize an answer time by adding a function to a communication control processor set on the route between a terminal and a computer of the remote side to select a using circuit according to the answer data value received in a key-in mode of the terminal. CONSTITUTION:The inquiry data produced by a terminal 7 is once delivered to a communication control processor 6 and then transferred to a communication control processor 3 via a satellite circuit 8 or a ground circuit 9 to finally reach a host computer 4. The processor 6 compares the value of a control part showing the answer data value of an information part of a received frame with the threshold answer data value designated previously. If the answer data value of the control part is larger than the threshold value, the circuit 8 is recorded to a using circuit identifying code part of a routing table. While codes 0 and 1 showing allocation of the circuit 9 are recorded to said code part when the answer date value of the control part is smaller than the threshold value. Thus the answer data is sent to the circuit 8 with the code 0 and to the circuit 9 with the code 1 respectively.

95. 发明专利

JPS6384211A LINE CONTROL SYSTEM 失效
公开(公告)号：JPS6384211A
公开(公告)日：1988-04-14
申请号：JP22818686
申请日：1986-09-29
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： MORITA HIROSHI , FUJIKURA NOBUYUKI , HAGIWARA MASAYOSHI , KATAOKA KENJI , SASAKI RYOICHI
IPC分类号： H04J3/00 , H04B7/15 , H04B7/212
摘要： PURPOSE:To contrive to reduce a reserved slot number by assigning a reserved slot of a reservation area at each terminal group and providing a free area to the reserved area and providing a table managing the reserved area to a master station so as to attain line allocation processing. CONSTITUTION:All terminal equipments are grouped into (n) groups and each group is assigned fixedly to a reservation slot. The rate of each reserved slot in use is made nearly equal by the grouping of the terminal equipment and the line is used most efficiently. A master station 106 uses a flag able to decide the propriety of a request data of line assignment via a satellite 101 through a slave station 103 from each terminal equipment. The slave station 103 supervises the presence or absence of a request from each terminal equipment and generates a request data to be sent to the master station 106 and sent to the master station 106 via the satellite 101. In receiving an allocation finish data from the master station 106 within a timer setting time, it is informed to the terminal equipment.

96. 发明专利

JPS6329784A EXCESS CALCULATION SYSTEM 失效
公开(公告)号：JPS6329784A
公开(公告)日：1988-02-08
申请号：JP17164686
申请日：1986-07-23
申请人： HITACHI LTD , HITACHI CONTROL SYST
发明人： NAGAI YASUHIKO , TAKARAGI KAZUO , SHIRAISHI TAKAYOSHI , SASAKI RYOICHI , NAKAGAWA AKIO , TANIGUCHI NOBUHIRO
IPC分类号： G06F7/52 , G06F7/535 , G06F7/72 , G09C1/00 , H04L9/30

97. 发明专利

JPS62239694A METHOD AND APPARATUS FOR PICTURE DATA MAIL ORDER 失效
公开(公告)号：JPS62239694A
公开(公告)日：1987-10-20
申请号：JP8202086
申请日：1986-04-11
申请人： HITACHI LTD
发明人： MIYAOKA SHINICHIRO , SHIRAISHI TAKAYOSHI , SASAKI RYOICHI
IPC分类号： H04M11/00 , G06F17/30 , G06Q10/08 , G06Q50/00 , G06Q50/28 , H04N1/00 , H04N7/16
摘要： PURPOSE:To attain proper judgement whether or not a commodity is to be purchased by allowing a purchaser to observe an outline picture before the purchase is decided. CONSTITUTION:Since an original picture bas much data quantity, the communication requires time and is not suitable for high speed retrieval. In case a retrieval request is given, the retrieval of picture in matching with the requirements of the purchaser is attained. In case the said picture exists, the outline picture is read form a magnetic disk 2, sent to the purchaser, and in case the reply of purchase decision exists, the original picture is read from an optical disk 1 and sent to the purchaser. Further, the code of purchaser and the price of the picture are written in a charging file.

98. 发明专利

JPS62213434A TRANSMITTER RECEIVER SYSTEM 失效
公开(公告)号：JPS62213434A
公开(公告)日：1987-09-19
申请号：JP5471586
申请日：1986-03-14
申请人： HITACHI LTD
发明人： SASAKI RYOICHI
IPC分类号： H04B7/15 , H04B7/204
摘要： PURPOSE:To use a transmission/reception common antenna as an exclusive antenna by using a satellite line and a ground line switchingly to attain the high reliability of communication. CONSTITUTION:A facsimile communication system 10 comprises a transmission station 100 making the transmission only mainly and plural receiving stations 200 making mainly reception only. They are connected by both a satellite line (incoming line 400 and outgoing line 500) via a communication satellite 300 and a ground line network 600. In the normal state, the transmission is applied by using the satellite line 400. On the other hand, if no satellite communication is utilized due to any cause (heavy rainfall or the like), the transmission information is sent to the reception station through the ground line network 600.

99. 发明专利

JPS62210746A DATA RESENDING SYSTEM 失效
公开(公告)号：JPS62210746A
公开(公告)日：1987-09-16
申请号：JP5399186
申请日：1986-03-12
申请人： HITACHI LTD
发明人： NAKAMURA TSUTOMU , FUJIKURA NOBUYUKI , SHINNAI KOSUKE , HAGIWARA MASAYOSHI , SASAKI RYOICHI , YAGI HIROYUKI
IPC分类号： H04L1/16
摘要： PURPOSE:To prevent a throughput or efficiency in a transmission line from being lowered, by resending only a frame in which an error is generated normally, and resending all the frames after the frame in which the error is generated, when the number of erroneous frames exceed a regulated value continuously. CONSTITUTION:In a normal operation, only the erroneous frame is resent, and also at the same time, a system is regulated by a Selective Repeat ARQ possible to perform plural number of resending requests. And when the number of continuous erroneous frames exceed the regulated value, all of the frames after the frame in which the error is generated, are resent by logic link unit sharing a data link. The system is switched to a Go-Back-N ARQ system, then a resending is performed. In this way, data to be resent is the one that is transmitted by logic links 10-12 sharing a channel, and for example, when the error is generated in the logic link 10 which transmits the data belonging to an application program 7, only the data of the logic link 10 is resent, therefore, it is not necessary to resend the data transmitted by other logic links.

100. 发明专利

JPS62189823A COMMUNICATION SYSTEM USING LINE IN COMMON 失效
公开(公告)号：JPS62189823A
公开(公告)日：1987-08-19
申请号：JP3082286
申请日：1986-02-17
申请人： HITACHI LTD
发明人： SHINNAI KOSUKE , MIYAZAKI SATOSHI , SASAKI RYOICHI , NAKAMURA TSUTOMU , HARUNA KOICHI
IPC分类号： H04L1/00 , H04B1/74 , H04B7/15 , H04B7/204 , H04L12/28
摘要： PURPOSE:To attain efficient communication at high speed by using a multiplex line control function as a means controlling communication line and deciding which of a ground line and a satellite communication line is to be used depending on the line state so as to use the line in common and switching the line. CONSTITUTION:Network control programs 101, 101' are stored respectively in communication controllers 6, 6'. Virtual communication access control programs 102, 102' and user programs 103, 103' are stored in host computers 7, 7'. Multiplex line control is applied between the host computers 7, 7'. The communication controller 6 selects a line optimum to a communication data and uses it switchingly based on internal information such as a data from the hostcomputer 7 and the capability of the communication line while the information of the line state is being detected. If any line has a fault, a faulty line is switched into a normal line as the switching function.

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