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1. 发明专利

JPH0750209B2 失效
公开(公告)号：JPH0750209B2
公开(公告)日：1995-05-31
申请号：JP25278084
申请日：1984-11-29
申请人： STC PLC
发明人： TERII BURICHENO , ARAN FUIIRUDEINGU , NIKORASU ANSONII HEUITSUSHU
IPC分类号： G02B6/02 , C03B37/10 , G02B6/24 , G02B6/28 , G02B6/287 , G02B6/34 , G02B6/10

2. 发明专利

JPH06208038A OPTICAL NETWORK 失效
公开(公告)号：JPH06208038A
公开(公告)日：1994-07-26
申请号：JP40392890
申请日：1990-12-19
申请人： STC PLC
发明人： TERII BURICHIENO
IPC分类号： G02B6/28 , H04B10/02 , H04B10/20 , H04B10/272 , H04L12/44
摘要： PURPOSE: To obtain an optical network which does not require a multiplex terminal by permitting the respective optical fibers in the network to transmit transmission from only one system node among the respective system nodes. CONSTITUTION: The synchronous network has multiple nodes 14 which are mutually connected by optical pathways 12 or a terminal 11. A route is decided by passing through a common distribution center 13 in the pathways 12. A signal emitted by one arbitrary node is transmitted to all the system nodes provided with nodes generating the signals. Since one node is selected as a reference node for the aim of tuning time and the other nodes adjust the tuning time, all transmissions are synchronized at the common distribution center 13. Namely, the respective optical fibers transmit transmission only from one of the nodes 1-4. In the circuit network, the signals transmitted by the nodes 1-4 via the circuit network are synchronized in the common distribution point 13 during use.

3. 发明专利

JPH0651148A POLARIZATION STATE CONTROLLER 失效
公开(公告)号：JPH0651148A
公开(公告)日：1994-02-25
申请号：JP9002691
申请日：1991-03-28
申请人： STC PLC
发明人： TEIMOSUII ANDORUU RAAJI
IPC分类号： G02B6/00 , G02B6/024 , G02B6/34 , G02B26/00 , G02F1/01 , G02B6/16
摘要： PURPOSE: To produce a polarization state controller which easily adapts the control of the output of the polarization state to any change with time in any direction. CONSTITUTION: An elliptic plane coil of a single mode fiber 11 is formed into a non-plane coil 20 showing circular birefringence with linear parts which are twisted to orthogonal planes and face each other, and the extent of birefringence is changed by an electro-mechanical transducer 34 like a speaker which controls the gap which separated two linear parts facing each other of the coil from each other. Two or more such controllers and interposed additional coils for quarter-wave linear birefringence are alternately arranged in the longitudinal direction, thus constituting a polarization state controller.

4. 发明专利

JPH04223627A FAULT LOCATION METHOD 失效
公开(公告)号：JPH04223627A
公开(公告)日：1992-08-13
申请号：JP8115191
申请日：1991-03-22
申请人： STC PLC
发明人： TOOMASU OZUWARUDO , IAN JIYONSON HAASUTO
IPC分类号： G01R31/08 , H04B10/00 , H04B10/02 , H04B10/08 , H04B17/40
摘要： PURPOSE: To provide a simple method applicable even in the case that a fault is an intermittent electric fault in the case of locating the fault of the certain submarine long distance optical transmission system of plural optical relay system. CONSTITUTION: Connection is performed from a first terminating part TERM1 on the ground under a water surface to a second terminating part TERM2 on the ground through plural optical repeaters. Counters 1 and 2 at the respective terminating parts count frame alignment word(FAW) pulses and the counters 1 and 2 are started by the injection of a single error at the transmission rack 4 of the terminating part 2 by pulses from a pulse generator 5. When a signal error arrives at the other terminating part 1 after the delay of Nt clock pulses, the counter 1 is started. When a high voltage fault is present, the error is simultaneously generated on all fibers. Since propagation time from a fault part to the terminating part depends on the fault, the position of the fault is decided by a counted number on the stopped counter.

5. 发明专利

JPH03192849A DATA COMMUNICATION NETWORK 失效
公开(公告)号：JPH03192849A
公开(公告)日：1991-08-22
申请号：JP27314190
申请日：1990-10-11
申请人： STC PLC
发明人： RICHIYAADO JIEIMUSU UESUTOMOA
IPC分类号： H04J3/06 , H04J14/02
摘要： PURPOSE: To maintain the accurate time sequence of a signal by constituting a frame of plural messages outputted from respective terminals, receiving these messages in parallel and ordering messages received in previously determined order in the frame in the receiving order of the frame in each terminal. CONSTITUTION: Many identical node devices 20 are mutually connected by optical fiber transmission lines 21 through a common passive optical star coupler 22. When the system is driven, the frames of all nodes are synchronized with a frame outputted from a reference node independently of their phases. Each node having a transmitting public writing part transmits the writing part to its own optical frequency on the data packet of a work frame. Each frame carries data from all system nodes in parallel and provides effective application to system band width. Each received data packet in the frame is processed as data received in the same order as the numbering of wavelength. Each node is held at the fixed time order from other nodes of the network. Since the frame is shorter than transfer time, the high resolution of a time stage can be attained.

6. 发明专利

JPH0352876B2 失效
公开(公告)号：JPH0352876B2
公开(公告)日：1991-08-13
申请号：JP15390185
申请日：1985-07-12
申请人： STC PLC
发明人： PIITAA JON AIRITSUFUE
IPC分类号： G06F3/041 , G02F1/133 , G06F3/048 , G09G3/36

7. 发明专利

JPH03101428A OPTICAL RECEIVER 失效
公开(公告)号：JPH03101428A
公开(公告)日：1991-04-26
申请号：JP14846090
申请日：1990-06-06
申请人： STC PLC
发明人： FUAZURORAA RUUIZADEGAN JIYAARO
IPC分类号： H04B10/04 , H03F3/08 , H04B1/06 , H04B10/06 , H04B10/14 , H04B10/158 , H04B10/26 , H04B10/43
摘要： PURPOSE: To increase a dynamic range by providing the light receiver with a reverse biased photodetector, including a voltage-dependent impedance element arranged so as to branch the optical current of the photodetector according to the increment of voltage drop due to the bias of the photodetector. CONSTITUTION: A photodetector Dd is connected to a receiver front-end amplifier Ar through an input, and bias voltage Vs is impressed to the photodiode Dd through a resistor R1 . The photodetector Dd is branched by a diode Do , connected to a capacitor C and a resistor Rc in series, and the diode Do is connected to a bias source through the resistor Rc and a diode Ds . Thus the optical current of the photodetector Dd is branched according to the increment of an optical signal level, and the reverse biased photodetector Dd has a voltage- dependent impedance element, arranged so as to bias the photodetector Dd , so that the dynamic range of the receiver can be increased.

8. 发明专利

JPH0249529B2 失效
公开(公告)号：JPH0249529B2
公开(公告)日：1990-10-30
申请号：JP10562684
申请日：1984-05-24
申请人： STC PLC
发明人： AANESUTO JEEMUSU WAAKUMAN
IPC分类号： H01C1/02 , H01C1/034 , H01G2/12 , H01G4/224 , H05K5/06

9. 发明专利

JPH02257796A TRANSMISSION NETWORK 失效
公开(公告)号：JPH02257796A
公开(公告)日：1990-10-18
申请号：JP28282189
申请日：1989-10-30
申请人： STC PLC
发明人： ANSONII JIESOTSUPU , MAIKERU JIEEMUZU SEKUSUTON
IPC分类号： H04Q3/52 , H04Q3/68 , H04Q11/04
摘要： PURPOSE: To obtain a switch configuration by which the cost is almost increased substantially linearly as the scale of the switch is increased by adjusting a plurality of digital rates up to a synchronization rate having a prescribed full number relationship to each other and connecting broad range of signals in crossing in a single array. CONSTITUTION: A synchronization digital cross connection device is made up of interface units 9-11, a synchronization cross connection signal(SXS) distribution frame function 12, a control computer 13 and cross connectors 14, 15. Then a plurality of digital rates are adjusted to be a synchronization rate and the adjusted synchronization rate is selected to allow the digital rates to have the prescribed full number relationship, then all the cross connection is set within a single array. Thus, even when the switch is made large in size, the cost increase is made substantially linear.

10. 发明专利

JPH02244015A OPTICAL FIBER CABLE 失效
公开(公告)号：JPH02244015A
公开(公告)日：1990-09-28
申请号：JP33251089
申请日：1989-12-21
申请人： STC PLC
发明人： PIITAA JIYOOJI HEIRU , JIYON NIJIERU RATSUSERU
IPC分类号： B29C39/18 , B29D11/00 , G02B6/44
摘要： PURPOSE: To improve productivity by using a single-stage treatment in place of multistage treatments, thereby making it possible to substantially reduce a cost and decreasing the number of treatment times if using an expensive material. CONSTITUTION: A submarine cable core package is formed by directly inserting fibers and a liquid packing material into a sectinoally C-shaped member (C section) of copper, closing this C section and changing (curing) the packing material to an elastic solid state. This package consists of the plural fibers 1 which are subjected to primary coating and are held in the prescribed positions with each other by the cured packing material 2. The packing material 2 is inserted together with the fibers 1 in the liquid state into the C section. The C section is so closed as to constitute a pressure pipe 3. The curing treatment is executed within the closed metallic C section. As a result, the single-stage process including not only an improvement but a cost reduction as well is obtd.

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