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1. 发明专利

JPS6169234A Loop transmitter and control system for countermeasure to loop transmission fault 失效
标题翻译：用于循环传输故障的环路发送器和控制系统
公开(公告)号：JPS6169234A
公开(公告)日：1986-04-09
申请号：JP18377184
申请日：1984-09-04
申请人： Oki Electric Ind Co Ltd
发明人： SHIOJIMA MASANORI , FUNATSU JUNJI , NAKAYAMA TAKAHISA
IPC分类号： H04L12/42
摘要： PURPOSE: To attain the direct communication between a remote end office right under a fault point on a loop transmission line via a working loop transmission line, by providing a spare clock to each remote end office and a route selection switch to the reception part of a transmitter as well as to the transmission/reception part of each end office.
CONSTITUTION: When a fault occurs on a transmission line 16 or 17, a remote end office RT detects a step-out via a CPU13 and switches the faulty clock to a spare clock 15 of its own to recover the frame synchronization. Then the office RT decides a fault belongs to its own office or a transmission line and controls a route selection switch 5 of a working transmitter 1 through the CPU13 for selection of a route so that the output signal of a transmission part 1-2 is received by a reception part 1-1. Thus the office RT confirms the normalness of its own office. Then the remote end offices right above and right under a faulty area select the route by switches 7 and 8 so that the output 16 of the transmitter 1 is returned to a spare transmission line 17. That is, a loop-back transmission is performed. Thus the CPU13 controls route selection switches 5.8 according to each fault pattern to recover a control system.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了通过工作环路传输线路在环路传输线上的故障点之间的远程办公室之间直接通信，通过向每个远程办公室提供备用时钟，以及到达接收部分的路由选择开关发射机以及每个终端局的发射/接收部分。规定：当传输线路16或17发生故障时，远端办公室RT经由CPU13检测出故障，并将故障时钟切换到自己的备用时钟15，以恢复帧同步。然后，办公室RT决定属于自己的办公室或传输线路的故障，并且通过CPU13通过CPU13控制工作发射机1的路由选择开关5，以选择路由，使得发送部分1-2的输出信号被接收由接待部分1-1。因此，办公室RT确认了自己办公室的正常状态。然后在错误区域正上方和右侧的远程办公室通过开关7和8选择路由，使得发射机1的输出16返回到备用传输线17.也就是说，执行环回传输。因此，CPU13根据每个故障模式控制路由选择交换机5.8，以恢复控制系统。

2. 发明专利

JPH01278138A FRAME SYNCHRONIZING SYSTEM 失效
公开(公告)号：JPH01278138A
公开(公告)日：1989-11-08
申请号：JP10539688
申请日：1988-04-30
申请人： OKI ELECTRIC IND CO LTD , TOKYO TELECOM NETWORK
发明人： SHIOJIMA MASANORI , FUNATSU JUNJI , AOKI CHIKAO , TAKAHASHI HIROAKI , MOCHIZUKI TAKASHI
IPC分类号： H04J3/06 , H04L7/08
摘要： PURPOSE:To improve frame synchronizing characteristics by combining code conversion rule violating bits and normal code conversion rule bits to form a frame synchronizing pattern of plural bits. CONSTITUTION:A transmission system consists of an encoding circuit 31, a line driver 32, a transmission line 33, a line receiver 34, a decoding circuit 35, a shift register 36, a synchronizing pattern detecting circuit 37, and a frame synchronizing circuit 38. A frame synchronizing pattern is formed with combination of the code conversion rule violating bits and the normal code conversion rule bits. In such constitution, the frame synchronizing characteristics obtained in a normal state of the line 33 are excellent and equivalent to the frame synchronizing characteristics obtained by said violating bits only. Then it is possible in an abnormal state of the line 33 to quickly detect the abnormality and also to reduce the pseudo synchronizing probability compared with the frame synchronizing characteristics obtained by the violating bits only.

3. 发明专利

JPH07115406A SIGNAL MULTIPLEXER 失效
公开(公告)号：JPH07115406A
公开(公告)日：1995-05-02
申请号：JP26090793
申请日：1993-10-19
申请人： OKI ELECTRIC IND CO LTD
发明人： SHIOJIMA MASANORI
IPC分类号： H04N1/00 , H04J3/00 , H04J3/17 , H04J3/22
摘要： PURPOSE:To transmit non-audio data signal without limiting the transmission speed of this signal even in the case that an audio signal is compressed and is transmitted at a transmission speed lower than that of the non-audio data signal. CONSTITUTION:Audio/non-audio signal discrimination parts 4-1 to 4-8 which discriminate audio data signals or non-audio data signals and signal selecting parts 7-1 to 7-8 which selectively switch these signals to output them are provided. A signal distribution part 6 which collects non-audio data signals from plural transmission channels and assignes them to desired signal selecting parts 7-1 to 7-8 to output them and a line control part 8 which controls the signal distribution part 6 and signal selecting parts 7-1 to 7-8 in response to discrimination signals from audio/non-audio signal discrimination parts 4-1 to 4-8 are provided, When the signal to be transmitted is a non-audio data signal, signal selecting parts, which are not used for transmission of audio data signals and are required for transmission of the non-audio data signal, out of plural signal selecting parts 7-1 to 7-8 are assigned to the signal distribution part 6 to perform the transmission.

4. 发明专利

JPH01278193A SUBSCRIBER'S PRIVATE LINE TERMINATING DEVICE 失效
公开(公告)号：JPH01278193A
公开(公告)日：1989-11-08
申请号：JP10539588
申请日：1988-04-30
申请人： OKI ELECTRIC IND CO LTD , TOKYO TELECOM NETWORK , HITACHI LTD , FUJITSU LTD , NEC CORP
发明人： SATO KENICHI , SHIOJIMA MASANORI , TAKAHASHI HIROAKI , MOCHIZUKI TAKASHI
IPC分类号： H04Q3/42 , H04J3/00
摘要： PURPOSE:To make a TDM unnecessary by providing an interface(TTC standard digital interface) means with a subscriber device such as a digital PBX, etc., in a DSU. CONSTITUTION:A means to convert alternately first frame constitution in an interface at a transmission path side and a first code, and second frame constitution in a TTC standard digital interface at the subscriber device side such as the private branch exchange(PBX), etc., and a third code is provided in the subscriber's private line terminating device(DSU). In other words, the PBXs 10a and 10b are connected directly to the DSUs 20a and 20b, respectively with the TTC standard digital interface, and a private network consisting of the PBX10a and the DSU20a is connected to the private network consisting of the DSU20a and the PBX10b via a transmission path network. In such a way, it is possible to make a time divisional multiplexer (TDM) unnecessary, and to improve profitability.

5. 发明专利

JPH01260947A COLLISION DETECTION SYSTEM 失效
公开(公告)号：JPH01260947A
公开(公告)日：1989-10-18
申请号：JP8810688
申请日：1988-04-12
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATO KENICHI , SHIOJIMA MASANORI , DEGUCHI FUMIHIKO , KURANAGA HIROSHI
摘要： PURPOSE:To attain accurate detection even if the level change at collision is small by detecting all change points of signals on a transmission medium, eliminating a change point based on a prescribed signal sent from a terminal equipment and detecting the presence of collision of signals from the remaining signal. CONSTITUTION:When a terminal equipment 2-2 sends a signal B from a driver 5-2 to a transmission medium 1, signals A, B are collided with each other on the transmission medium 1 near the terminal equipment 2-2 and a signal C is generated. The signal C is received by a receiver 4-2 of the terminal equipment 2-2 and collision is detected by a collision detection circuit 6-2. A binary signal corresponding to the output signal of the driver 5-2 is inputted to other input terminal of the AND circuit 65 as a gate signal and a short pulse at the change point based on the output signal from the driver 5-2 of the terminal equipment 2-2 is eliminated. Thus, the presence of collision of signals is detected accurately.

6. 发明专利

JPH01265634A COLLISION DETECTING CIRCUIT 失效
公开(公告)号：JPH01265634A
公开(公告)日：1989-10-23
申请号：JP9354688
申请日：1988-04-18
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATO KENICHI , SHIOJIMA MASANORI , DEGUCHI FUMIHIKO , KURANAGA HIROSHI
摘要： PURPOSE:To facilitate the collision detection of signals on a transmission medium by using a circuit of low output impedance with high drive efficiency and driving easily a balanced type transmission medium as a driver circuit. CONSTITUTION:Terminal equipments 41, 42 having respectively drivers 22, 22, and receivers 31, 32 are connected to a transmission medium 11 and communication is applied between them. Then the output impedance of the drivers 21, 22 at calling is lower than the characteristic impedance of the medium 11 and the output impedance other than the calling is much higher than the characteristic impedance of the medium 11. Since a current flowing to the drive circuit of a low output impedance is detected, the part with large current change at collision is detected and collision in the transmission medium is detected easily.

7. 发明专利

JPH01260949A COLLISION DETECTION CIRCUIT 失效
公开(公告)号：JPH01260949A
公开(公告)日：1989-10-18
申请号：JP8810888
申请日：1988-04-12
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATO KENICHI , SHIOJIMA MASANORI , DEGUCHI FUMIHIKO , KURANAGA HIROSHI
摘要： PURPOSE:To accurately detect collision even if a level change at collision is very small by differentiating a signal on a transmission medium so as to detect a change point and ANDing the point with a change point based on a prescribed signal sent from a terminal equipment. CONSTITUTION:When a terminal equipment 2-2 sends a signal B from a driver 5-2, signals A, B are collided with each other on the transmission medium 1 near the terminal equipment 2-2 to generate a signal C received by a receiver 4-2 and the collision is detected by a collision detection circuit 6-2. The signal C is differentiated by a differentiating circuit 62 and given to one input of an AND circuit 63. An input signal to the driver 5-2 is given to the other input of the AND circuit 63 as the gate signal and a short pulse of a change point based on the output signal from the driver 5-2 of the terminal equipment 2-2 is eliminated. Thus, the presence of collision between signals is detected accurately.

8. 发明专利

JPH01260948A COLLISION DETECTION CIRCUIT 失效
公开(公告)号：JPH01260948A
公开(公告)日：1989-10-18
申请号：JP8810788
申请日：1988-04-12
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATO KENICHI , SHIOJIMA MASANORI , DEGUCHI FUMIHIKO , KURANAGA HIROSHI
摘要： PURPOSE:To accurately detect the presence of collision between signals by taking a difference signal between a signal arisen on a transmission medium and a signal obtained through the transmission data given to an equivalent circuit having the same characteristic as a 2nd driver and the transmission medium. CONSTITUTION:When a terminal equipment 2-2 sends a signal B from a driver 5-2 to a transmission medium 1, signals A, B are collided with each other on the transmission medium 1 near the terminal equipment 2-2 to generate a signal C received by a receiver 4-2 and collision is detected by a collision detection circuit 6-2. A transmission data and a control signal similar to those to the driver 5-2 are inputted to a driver 61, sent to an equivalent circuit 62 to the transmission medium and inputted to the inverting input of a differential amplifier 65 via an amplifier 64. On the other hand, the signal C on the transmission medium 1 is inputted to a noninverting input of the differential amplifier 65 via the amplifier 63, then its own signal is eliminated and only the signal from other terminal equipment on the transmission medium 1 is extracted.

9. 发明专利

JPH01259648A COLLISION DETECTION SYSTEM 失效
公开(公告)号：JPH01259648A
公开(公告)日：1989-10-17
申请号：JP8722588
申请日：1988-04-11
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATO KENICHI , SHIOJIMA MASANORI , DEGUCHI FUMIHIKO , KURANAGA HIROSHI
摘要： PURPOSE:To surely execute the collision detection of a signal on a transmission medium by detecting an electric current flowing on the driver circuit of a low output impedance or on the transmission medium in the vicinity of the circuit. CONSTITUTION:The driver circuits 21 and 22 of the low output impedance are used in order to send out the signal from a terminal onto a transmission medium 11 and the electric current flowing on the driver circuits 21 and 22 in order to detect the collision of the signal on the transmission medium 11 or the electric current on the transmission medium 11 in the vicinity of the circuits is made to detect. Consequently, the greater electric current flows on the output impedance of the driver circuits 21 and 22 of the low output impedance or on the transmission medium 11 in the vicinity of the circuits at the time of a signal collision, the electric current flowing on the output impedance or on the transmission medium 11 in the vicinity is detected and the collision of the signal can be surely detected.

10. 发明专利

JPS60183836A TIME DIVISION MULTIPLEXING DEVICE 失效
公开(公告)号：JPS60183836A
公开(公告)日：1985-09-19
申请号：JP3875384
申请日：1984-03-02
申请人： OKI ELECTRIC IND CO LTD
发明人： SHIOJIMA MASANORI , KOJIMA SADAO
IPC分类号： H04J3/04 , H04J3/24 , H04Q11/04
摘要： PURPOSE:To enhance a degree of multiplexing to reduce the number of wirings and simplify the hard constitution by using an address bus for a multiplexing/ demultiplexing circuit to give an address number to each channel. CONSTITUTION:In an example of the constitution of a receiving part of a channel corresponding part (CH') 17', an address signal (i) of a pertinent channel (i) which is preliminarily set to each channel corresponding part (CH') 17'-i by an address setting circuit 26 and a reception address signal (RADD) 3' connected through a bus are compared with each other by a comparing circuit 27, and a write signal 24 is outputted to a buffer memory 25 when they coincide with each other. In this case, data to the channel corresponding part (CH') 17'-i corresponding to the channel (i) is sent to the bus to which an internal reception multiplex signal (RDATA) 2 is connected, and data is written in the buffer memory 25. Contents of the buffer memory 25 are read out in the original data speed to become a reproduced data signal 4-i. By the similar operation, transmission data 5-i is multiplexed into an internal transmission multiplex signal (SDATA) 6.

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