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1. 发明专利

JPS55151276A INDUCTIVE RADIO DETECTION SYSTEM FOR POSITION OF TRAVELING BODY 失效
公开(公告)号：JPS55151276A
公开(公告)日：1980-11-25
申请号：JP5812579
申请日：1979-05-14
申请人： NIPPON STEEL CORP , FURUKAWA ELECTRIC CO LTD
发明人： AKAMATSU JIYUN , KIMURA KOUZOU , ISHIGAMI NAOTAKE , ENOMOTO YOSHIO
IPC分类号： H04B5/00 , B61L25/02 , G01S1/00
摘要： PURPOSE:To make it possible to detect the position of a traveling body with precision by correcting a shift in target position by electrically changing the set value of a reference signal without remodeling facilities on the side of the ground or traveling body. CONSTITUTION:On the ground side, cross inductive radio line 16 with cross points 10a-12a corresponding to target points 10-12 is laid, transmitter 13 is connected to line 16 via approach cable 14 and matching transformer 15, and at the terminal of line 16, terminating resistance 17 is arranged. On traveling body 1, two receiving antennas 18 and 19 are mounted at a run-directional interval. Antennas 18 and 19 are connected to signal processing circuit 20, phase-difference A-D converting circuit 21 and coincidence deciding circuit 22, which connects with reference-signal setting circuit 24 which sets and outputs a reference signal together with the output of absolute-address detecting circuit 23. The above-mentioned constitution makes it possible to detect a position corresponding to the target point of traveling body 1 with precision.

2. 发明专利

JPH06224849A RECEIVER 失效
公开(公告)号：JPH06224849A
公开(公告)日：1994-08-12
申请号：JP910393
申请日：1993-01-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KASETANI TOKUHIDE , ENOMOTO YOSHIO
IPC分类号： H04B10/03 , H04B10/07 , H04B10/02
摘要： PURPOSE:To cancel a delay difference between the signals of each channel generated due to the transmission characteristic of each device and each transmission line. CONSTITUTION:In an receiver in which each optical signal whose mark rate optically transmitted in parallel is 1/2 and whose frequency components are 1/2 times as large as a clock frequency is received by PIN-photodiodes 21-2N-1 and each optical signal is converted into an electric signal, each electric signal is fetched by variable delay circuits 41-4N-1, and the output is inputted to each of phase comparators 51-5N-1. Each of phase comparators 51-5N-1 compares the phase of the signal inputted from the variable delay circuit with the phase of the clock signal from a 1/2 frequency-divider 5N, and outputs a control voltage corresponding to the difference to the variable delay circuit. Each of variable delay circuits 41-4N-1 variably adjusts a delay amount according to the control voltage so that the phase of the clock signal can be matched with the phase of the outputted signal.

3. 发明专利

JPH0249671B2 失效
公开(公告)号：JPH0249671B2
公开(公告)日：1990-10-30
申请号：JP43983
申请日：1983-01-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SATO RYOICHI , ENOMOTO YOSHIO , FUKUHARA REIJI
IPC分类号： G01C22/00 , G01B7/00 , G01S1/00

4. 发明专利

JPS6077547A MULTIPLEX TRANSMISSION SYSTEM 失效
公开(公告)号：JPS6077547A
公开(公告)日：1985-05-02
申请号：JP18508883
申请日：1983-10-05
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NISHIMURA KATSUHIKO , HIMONO YUUSAKU , ENOMOTO YOSHIO
IPC分类号： H04L5/22 , H04J3/00
摘要： PURPOSE:To decrease power consumption by applying time division to a transmission signal and transmitting it only when the transmission signal is changed. CONSTITUTION:A parallel transmission signal Sp is latched 12, converted (14) into a serial signal and fed to a transmission circuit 16. The signal Sp is fed also to a change detection circuit 22 in this case, it is compared with the latched (12) signal and the change in information is detected. Then a start circuit 24 transmits a start signal Se to the transmission circuit 16 with an output when the change of information is detected. As a result, the circuit 16 transmits a serial signal for the prescribed cycle. When no change of information exists, the signal transmission is stopped.

5. 发明专利

JPH05227128A TRANSMISSION EQUIPMENT FOR OPTICAL TRANSMISSION SYSTEM 失效
公开(公告)号：JPH05227128A
公开(公告)日：1993-09-03
申请号：JP2370392
申请日：1992-02-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ENOMOTO YOSHIO
IPC分类号： H04J14/08 , H04J3/00 , H04L7/00
摘要： PURPOSE:To improve the operating accuracy of a target device that is a transmission target without impairing a fundamental function in optical light transmission CONSTITUTION:In the transmission equipment of an optical transmission system in which an optical signal from another connected optical transmission equipment is received by a light receiving part 10, and a multiplex processing part 13 performs the multiplex processing of a received optical signal corresponding to a clock signal oscillating from a clock oscillation part 12, and also, preset information on which the multiplex processing is performed is held at an output holding part 14, and furthermore, cyclic transmission to the target device is performed at need, a signal to stop the oscillation of the clock signal is outputted to the clock oscillation part 12 when no reception of the optical signal is detected, and the oscillation of the clock signal by the clock oscillation part 12 is stopped.

6. 发明专利

JPH0481135A OPTICAL TRANSMISSION LINE 失效
公开(公告)号：JPH0481135A
公开(公告)日：1992-03-13
申请号：JP19397990
申请日：1990-07-24
申请人： FURUKAWA ELECTRIC CO LTD
发明人： OTA KOSAKU , SHIMA MITSUAKI , KUME SHINICHI , ENOMOTO YOSHIO , OMAE KAZUYA
IPC分类号： H04B10/25 , H04B10/07 , H04B10/27 , H04B10/278
摘要： PURPOSE:To ensure the communication among nodes by using an optical amplifier provided to an optical tap so as to amplify optical signals from each optical tap thereby making output levels of the signals equal to each other. CONSTITUTION:When an electric signal is sent from a computer 42 of a transmission node 4 to an E/0 converter 40 through an electric signal transmission line 41, the electric signal is electrooptic-converted and the result is inputted to an optical tap 2 through an optical fiber 45, an optical demultiplexer multiplexer 46 and an optical drop cable 3. An optical signal entering a trunk line optical fiber 1 is branched into two at a 1st optical demultiplexer multiplexer 20 of an adjacent optical tap 2. The optical signal entering an optical amplifier 5 is amplified therein, in which a transmission loss or the like by the 1st optical demultiplexer multiplexer 20 in the optical tap 2 and the trunk line optical fiber 1 is compensated, and the level is kept the same as the level having been inputted from the optical tap and the signal is outputted to the trunk line optical fiber 1.

7. 发明专利

JPS53104267A PHASE DETECTION TYPE MOVING OBJECT POSITION DETECTING METHOD USING CROSSED INDUCTIVE RADIO LINES 失效
公开(公告)号：JPS53104267A
公开(公告)日：1978-09-11
申请号：JP1868777
申请日：1977-02-24
申请人： NIPPON KOKAN KK , FURUKAWA ELECTRIC CO LTD
发明人： MURAMATSU ISAO , ENOMOTO YOSHIO
IPC分类号： G01C22/00 , B61L25/02 , G01S1/00
摘要： PURPOSE:To continuously and accurately detect the positions of a moving object by providing at least two transmission antennas to the moving object and switching the transmission of the position signal by the command from the ground side.

8. 发明专利

JPS5110507A IDOTAINO ICHIKENSHUTSUHOSHIKI 失效
公开(公告)号：JPS5110507A
公开(公告)日：1976-01-28
申请号：JP8143374
申请日：1974-07-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ENOMOTO YOSHIO
IPC分类号： H04B5/00 , B61L25/02 , B61L27/00 , G01C22/00 , G01S1/00

9. 发明专利

JPS5393869A MOVING OBJECT POSITION DETECTION SYSTEM 失效
公开(公告)号：JPS5393869A
公开(公告)日：1978-08-17
申请号：JP788277
申请日：1977-01-28
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ENOMOTO YOSHIO
IPC分类号： H04B5/00 , B61L3/12 , B61L25/02 , G01C22/00 , G01S1/00
摘要： PURPOSE:To achieve the improvement in position detection accuracy by comparing the receiving signal phase of cross type inductive radio lines which become of antiphase at every address, as a reference, with the phase of the receiving signals from the lines by which binary codes differing with respect to addresses are obtainable.

10. 发明专利

JPH06140992A OPTICAL TRANSMITTER AND OPTICAL RECEIVER 失效
公开(公告)号：JPH06140992A
公开(公告)日：1994-05-20
申请号：JP28429792
申请日：1992-10-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TANABE MITSUTOSHI , ENOMOTO YOSHIO
IPC分类号： H04B10/03 , H04B10/07 , H04B10/2507 , H04B14/00 , H04B10/02
摘要： PURPOSE:To reduce a difference in transmission quality of a signal between all channels in parallel transmission. CONSTITUTION:A signal of a prescribed code form such as an electric signal having a DC component of an NRZ code inputted at every channel is converted into a code whose average mark rate is halved by sender side code conversion circuits 11-1N-1 in an optical transmitter, laser diodes 41-41N-1 are driven based on the signal to send an optical signal in parallel. Plural PIN photodiodes 71-7N-1 of a light receiving device receive each optical signal sent in parallel and convert each optical signal into correspondent electric signal and code conversion circuits 121-12N-1 on he receiver side convert the electric signal into the original signal whose average mark rate is twice.

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