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71. 发明专利

JPS5977739A Loop network system of duplex system 失效
标题翻译：双工系统的LOOP网络系统
公开(公告)号：JPS5977739A
公开(公告)日：1984-05-04
申请号：JP18755282
申请日：1982-10-27
申请人： Hitachi Ltd
发明人： MIZOKAWA SADAO , HAMADA TAKUSHI , TAKAHASHI MASAHIRO , FUSHIMI HITOSHI , YASUMOTO SEIICHI , OKADA MASAKAZU , TOMIZAWA HIROSHI , OONUKI TAKESHI
IPC分类号： H04L12/437
CPC分类号： H04L12/437
摘要： PURPOSE:To eliminate instable operation due to repetitive multiple addressing and prevent the disconnection of normal section from a monitor controller due to disappearance of multiple addressing, by making each transmission controller select a transmission line receiving at first the multiple addressing. CONSTITUTION:Each transmission signal of systems A, B is received at circuits 34, 35 in a transmission controller 2, selected by a multiplexer MPX30 and a control circuit 5, decoded by a muCOM100 via a DEM27, and a transmission data from the COM100 is transmitted respectively via an MOD26, MPX31,32 and transmission circuits 33, 36. When the multiple address from a monitor controller is received at the system A of the device 2 at first due to a failure of transmission system, this command is detected 38 and the transmission line of system A is selected by the detection of the end of command. Even if the multiple address is received again from the A system transmission line, while the A system signal exists, the selection of the system A is continued.
摘要翻译：目的：为了消除由于重复多次寻址引起的不稳定操作，并且防止由于多址寻址消失而使监视器控制器断开正常部分，通过使每个传输控制器选择首先接收多路寻址的传输线。构成：系统A，B的每个发送信号在传输控制器2中的电路34,35处被接收，由多路复用器MPX30和控制电路5选择，由μCOM100通过DEM27解码，并且来自COM100的传输数据是通过MOD26，MPX31,32和发送电路33,36分别发送。当由于传输系统故障而首先在设备2的系统A处接收到来自监视器控制器的多地址时，检测到该命令38和通过检测命令结束来选择系统A的传输线。即使再次从A系统传输线路接收到多个地址，在存在A系统信号的情况下，继续选择系统A.

72. 发明专利

JPS58173938A DATA TRANSMISSION CONTROLLING METHOD IN UNIT OF PLURAL BITS 失效
公开(公告)号：JPS58173938A
公开(公告)日：1983-10-12
申请号：JP5539682
申请日：1982-04-05
申请人： HITACHI LTD
发明人： TAKAHASHI MASAHIRO , OONISHI KINSHIROU , HAMADA TAKUSHI , OGURA TOSHIHIKO
IPC分类号： H04L5/22 , H04L12/00
摘要： PURPOSE:To transmit a flag pattern representing the end or start of information frame in distinguishing from other information, by transmitting and receiving data with the 1st and the 2nd pattern sequences representing the start and end of the information frame. CONSTITUTION:Data channels are formed with time slots TS#1, TS#3 and TS#5 of a multiplex frame shown in Figure A. The information frmae in Figure B consists of flag pattern sequences F1, 2, 3 representing sections, an information field and an error control field ECF. As shown in Figure C, an insertion/removal pattern sequence I/D is inserted at the transmission side, the sequence of the F1, 2, 3 is transmitted by changing them into F1.1/D.F2.2/D.F3, and the I/D is eiliminated at the reception side. In a data station 4, a data reception circuit 20 detects a flag pattern sequence, sections the information frame and stores the data addressed to itself in a reception memory 30. The reception memory 30 stores the information field among the information frames. A multiplexer 40 selects one of the two inputs and outputs it.

73. 发明专利

JPS56112157A CONTROLLING METHOD FOR CHANNEL ASSIGNMENT IN LOOP COMMUNICATION SYSTEM 失效
公开(公告)号：JPS56112157A
公开(公告)日：1981-09-04
申请号：JP1531180
申请日：1980-02-08
申请人： HITACHI LTD
发明人： TAKAHASHI MASAHIRO , HAMADA TAKUSHI , FUSHIMI HITOSHI
IPC分类号： H04L5/22 , G06F13/00 , H04L12/43
摘要： PURPOSE:To accomodate a channel having flexible and various kinds of transmission rates by assigning transmission rates to the channel according to the connection request and transmission rates from an control office without assignment of a fixed transmission speed to the channel. CONSTITUTION:When a connection request generates from a terminal device, FS detector 23 of the control office detects frame separation FS and, at the detection of dead status, sends connection request flag from connection/disconnection request register 28. Channel separation detector 26 calculates the channel number assigined to itself and sends data from transmission register 29. On the other hand, the control office receives a connection/disconnection field from connection/disconnection request receiving register 32 and decides whether the request is a connection request or a disconnection request. Thus, the channel having flexible and various kinds of transmission rates can be accomodated by assigning transmission rates to the channel according to the connection request and transmission rates from the control office.

74. 发明专利

JPS56112134A OPTICAL SIGNAL TRANSMISSION DEVICE 失效
公开(公告)号：JPS56112134A
公开(公告)日：1981-09-04
申请号：JP1531780
申请日：1980-02-08
申请人： HITACHI LTD
发明人： MIZOKAWA SADAO , FUSHIMI HITOSHI , YASUMOTO SEIICHI , OKADA MASAKAZU , TAKAHASHI MASAHIRO , HAMADA TAKUSHI
IPC分类号： H04B10/29 , H04B10/035 , H04B10/038 , H04B10/07 , H04B10/073 , H04B10/077 , H04B10/27 , H04B10/275 , H04B10/299 , H04B17/00 , H04L12/42 , H04L12/437 , H04L25/02
摘要： PURPOSE:To diagnose transmission and receiving operations by forming a closed loop for transmission and receiving, which contains both a light-electricity converting means and a electricity-light converting means, in a state that input and output transmission lines are being bypassed from a trasmission device. CONSTITUTION:The switching part 91 is operated by the signal 21a, the transmission lines 50, 51 are bypassed by the transmission line 52, and also the transmission and receiving terminals of the transmission and receiving part 81 are connected through the attenuator 56. A data which has been prescribed in advance passes through the attenuator 56 through the computer 21 the buffer 4 the transmission circuit 6 the transmitter 8 the light emission element 8, transmits and receives the data through the self-loop which passes through the photo detecting element 9 the receiver 5 the buffer 3, and tests the operation by comparing and collating the received data and the prescribed data. If the operation is normal during the prescribed period, the set damping amount of the attenuator 56 is increased by the amount which has been descirbed in advance to repeat the same diagnostic operation.

75. 发明专利

JPS55103630A LINE CONTROL SYSTEM OF DATA HIGHWAY SYSTEM 失效
公开(公告)号：JPS55103630A
公开(公告)日：1980-08-08
申请号：JP1044879
申请日：1979-02-02
申请人： HITACHI LTD
发明人： TAKAHASHI MASAHIRO , HAMADA TAKUSHI , YASUMOTO SEIICHI , IDE TOSHIYUKI , FUSHIMI HITOSHI , OKADA MASAKAZU
IPC分类号： G06F13/00
摘要： PURPOSE:To improve a line efficiency be performing an advanced polling operation. CONSTITUTION:CST1 transmits a SEL frame to designate a ST, which responded to polling of the preceding transmission cycle, by this address DA. Continuously, CST1 transmits a POL frame, and the ST having transmission request transmits a REQ frame. The ST which responds to this polling is selected by the next transmission cycle. The ST selected in the current transmission cycle transmits a DATA frame after a time of POL+REQ frame length. The receiving ST designated by receiving ST address DA in the DATA frame transmits a RESP frame at the end of data frame receiving. The ST which transmitted the DATA frame transimts an END frame without waiting the receiving end of the PESP frame.

76. 发明专利

JPS5342640A CIRCUIT DATA PROCESSING SYSTEM 失效
公开(公告)号：JPS5342640A
公开(公告)日：1978-04-18
申请号：JP11778876
申请日：1976-09-30
申请人： HITACHI LTD
发明人： OONISHI KINSHIROU , TAKAHASHI MASAHIRO , HAMADA TAKUSHI , TANINAKA MASAO
IPC分类号： H04Q9/00 , G06F3/00 , G06F13/00 , H04Q9/14
摘要： PURPOSE:The number of circuits in which data can be stored and the transmitting speed of the circuit are made unlimited to the data extraction unit from the circuit to the processing unit, thereby making the data processing smooth.

77. 发明专利

JP2002044112A SDLC METHOD LOOP NETWORK SYSTEM AND ITS DATA TRANSMISSION METHOD, AND SDLC COMMUNICATION DEVICE 失效
公开(公告)号：JP2002044112A
公开(公告)日：2002-02-08
申请号：JP2000224849
申请日：2000-07-26
申请人： HITACHI LTD
发明人： TAHIRA MITSUHIRO , HAMADA TAKUSHI , NOUCHI TAKAO , HANADA SHINICHI
IPC分类号： H04L29/14 , H04L12/437
摘要： PROBLEM TO BE SOLVED: To provide an SDLC(Synchronous Data Link Control) loop network system that can maintain high transmission quality without causing a transmission delay. SOLUTION: In the network where a master station and slave stations are connected in a loop via a transmission line, when each slave station 2i receiving a frame from a pre-stage station via a loop transmission line 3(i-1) transmits the received frame to a next-stage station via a transmission line 3i, each slave station 2i adds an idle pattern generated by a GA(Go Ahead)+Idle transmission circuit 205 of its own station as an idle pattern to the end of the frame and allows a transmission circuit 206 to transmit the resulting frame to the next- stage station, and a transmission state monitor circuit 203 monitors the idle pattern sent from the pre-stage station to detect occurrence of a transmission fault.

78. 发明专利

JPH08223192A TRANSMISSION EQUIPMENT 失效
公开(公告)号：JPH08223192A
公开(公告)日：1996-08-30
申请号：JP2785695
申请日：1995-02-16
申请人： HITACHI LTD
发明人： INADA SHUNJI , OOKURA TAKANORI , OGAWA HISAO , HAMADA TAKUSHI
IPC分类号： G06F13/00 , H04L12/40
摘要： PURPOSE: To transfer a transmission right and to improve transmission efficiency compared to a conventional system using a token frame by storing information for instructing the transfer of the transmission right in the data part of a frame when obtaining the transmission right and transmitting a data frame. CONSTITUTION: This transmission equipment 7 is provided with a transmission right detection means 21, an MPU 22 and a CSMA/CD access control circuit 25, etc., in the inside, connected through an external bus 48 to a computer and connected through a transceiver 4 to a communication channel 1. The MPU 22 controls the operation of the transmission equipment 7 corresponding to a program stored in a program memory 23. The transceiver 4 outputs the signals of the communication channel 1 to the transmission equipment 7 as reception signals 41, detects the collision of frame transmission from the respective transmitters generated on the communication channel 1 and transmits frame signals 42 from the transmission equipment 7. When transmission data are set in a shared memory 24, the transmission right detection means 21 outputs the signals 52 detecting that the transmission right is transferred to the present transmitter 7.

79. 发明专利

JPH07191926A DATA PROCESSING SYSTEM 失效
公开(公告)号：JPH07191926A
公开(公告)日：1995-07-28
申请号：JP33185093
申请日：1993-12-27
申请人： HITACHI LTD
发明人： YAMAGUCHI SHINICHIRO , HAMADA TAKUSHI , INADA SHUNJI , OOKURA TAKANORI , MIYAZAKI YOSHIHIRO
IPC分类号： G06F12/06 , G06F13/00 , H04L12/28
摘要： PURPOSE:To report it from a LAN adapter to a data processor that contents of a specific address of a transfer memory whose consistency with the transfer memory of another data processor is secured are updated by a LAN adapter. CONSTITUTION:A LAN adapter 33 is provided with directories 12, where update detection addresses are registered, and a comparator 14 which compares the write address with addresses registered in directories at the time of write to the transfer memory from the outside; and if the comparison result indicates coincidence, an interrupt signal is outputted to the data processor, and the write address is stored in a change point address register 18 so that it can be used by the data processor.

80. 发明专利

JPH0730576A TRANSMISSION SYSTEM 失效
公开(公告)号：JPH0730576A
公开(公告)日：1995-01-31
申请号：JP17437893
申请日：1993-07-14
申请人： HITACHI LTD
发明人： INADA SHUNJI , HAMADA TAKUSHI , OOKURA TAKANORI , OGAWA HISAO
IPC分类号： H04L29/02 , H04L12/28 , H04L12/46
摘要： PURPOSE:To obtain the transmission system in which data shared in common among different LANs are sent efficiently. CONSTITUTION:Plural 1st transmitters are interconnected by LANs 11, 12, etch transmitter has a common share memory and data written in a transmission area of the common share memory are sent to the LANs 11, 12 and transmission control sections 7, 8 in a 2nd transmitter 9 write data from the 1st transmitter received from one LAN to a predetermined area of the common share memory 4. Then the data are sent to the other LAN, the content of the common share memory in each of the 1st transmitters is made coincident among the different LANs. In the transmission system as above, the plural transmission control sections 7, 8 are connected to different LANs 11, 12 and the common share memory 4 is connected to the plural transmission control sections 7, 8 via a bus 6.

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