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1. 发明专利

JPS53103182A COMMUNICATION CABLE 失效
公开(公告)号：JPS53103182A
公开(公告)日：1978-09-08
申请号：JP1779677
申请日：1977-02-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , KOJIMA SHINYA , SAKAMOTO HIKARI , OOMURA MAKOTO
IPC分类号： H01B11/02
摘要： PURPOSE:To promote an improvement of crosstalk-proof and water-proof for the balancing cable, by such manner that the periphery of pair of quad, constituted by a core cable with a foaming insulator coated, be coated by a substantial insulator with the external surfaces fixed.

2. 发明专利

JPS5698668A MEASURING METHOD OF DERECTION TO THUNDERBOLT 失效
公开(公告)号：JPS5698668A
公开(公告)日：1981-08-08
申请号：JP133980
申请日：1980-01-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KUSUNOKI MICHIHIKO , KAIZU RIYOUSUKE , KOGA KUNIAKI
IPC分类号： G01W1/16
摘要： PURPOSE:To readily and reliably measure the direction to the location of a thunderbolt by performing a specific computation on the basis of the two largest voltages of the microphone output voltages from three or more ultrasonic receiving microphones. CONSTITUTION:Ultrasonic waves accompanied by a thunderbolt are detected by four or more microphones 1'-4' which are almost the same in directivity. Then, two pairs of microphones 1'-4', which are correspondent to the largest and second largest output in a level comparison selecting part 7. The outputs of the selected two pairs of microphones 1-4 are substracted in a computating part 8, and a horizontal degree on the basis of a holizontal degree - (maximum value divided by second largest value) table, which has been prepared by precounting them as corresponding values of the directions to thunderbolts, is displayed as the direction to a thunderbolt in a displaying part 9. Therefore, the direction to a thunderbolt can be measured readily and reliably.

3. 发明专利

JPS5653539A LIGHTNING SURGE PROTECTING DEVICE FOR COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPS5653539A
公开(公告)日：1981-05-13
申请号：JP12665079
申请日：1979-10-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , MOTOMITSU TAMIO , TAGUCHI MORIHIKO , KUKIDA JIYUUZOU
IPC分类号： H02H9/06

4. 发明专利

JPS53104879A COLLECTION OF COMMUNICATION CABLE 失效
公开(公告)号：JPS53104879A
公开(公告)日：1978-09-12
申请号：JP1863277
申请日：1977-02-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , SAKAMOTO HIKARI , OOMURA MAKOTO
IPC分类号： H01B13/02 , H01B13/04
摘要： PURPOSE:To attempt improvement of crosstalk feature, by decreasing unbalance of electrostatic capacity through control of the counter twist mechanism during the process of twisting collection of quad or twin cable.

5. 发明专利

JPS5649963A TESTING METHOD FOR APPARATUS BY SURGE 失效
公开(公告)号：JPS5649963A
公开(公告)日：1981-05-06
申请号：JP12664979
申请日：1979-10-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , MOTOMITSU TAMIO , TAGUCHI MORIHIKO
IPC分类号： G01R31/12
摘要： PURPOSE:To rationalize a testing method for the thunder-proof design of a transmitting apparatus, a communication terminal apparatus and the like and for the evaluation thereof in terms of such properties by a method wherein a testing waveform in accordance with the ratio of trouble of the apparatus is impressed on the apparatus in performing a voltage-resistance test therefor. CONSTITUTION:A voltage-resistance test for an apparatus is performed by using a surge waveform composed of a part 5 of voltage rising in a straight line, a part 6 of discharge voltage -- voltage in accordance with time characteristics -- of an arrester, and a part 7 where the waveform is intercepted. Under the voltage smaller than that of the time characteristics of the arrester, the arrester makes no action and the surge waveforms such as 8 and 9 are all impressed on the apparatus. Accordingly, by performing the voltage-resistance test with the same waveform as in the slanted part, the presence of any trouble in the apparatus due to the surge of thunder can be judged completely. A line of 5 can be decided by selecting the steepness of wave front from the number of occurrence of the thunder-surge voltage exceeding the steepness of wave front. A line of 7 can be determined from the distribution of the duration of wave tail whereby the energy of the thunder surge is decided. Thus, the test for the voltage-resistance can be performed rationally.

6. 发明专利

JPS55164386A MEASURING METHOD FOR POSITION OF THUNDERBOLT FALLING PLACE 失效
公开(公告)号：JPS55164386A
公开(公告)日：1980-12-22
申请号：JP7224379
申请日：1979-06-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , KAIZU RIYOUSUKE , KUSUNOKI MICHIHIKO
IPC分类号： G01W1/16 , G01S11/16
摘要： PURPOSE:To improve reliability and precision of measurement, by measuring the position of a thunderbolt falling place on a basis of the video signal of one video camera, at least, which is arranged in a measuring place and is directed toward a desired angle range, and recording dependent upon a tape recorder of the detection signal of a microphone which is installed in the same place. CONSTITUTION:Video cameras 1, 1' and 1'' of view angle 120 deg. are so installed that the range of 360 deg. can be photographed. When a thunderbolt falls in a certain place, any of video cameras 1, 1' and 1'' photographs lightning, and respective video outputs are subjected to three-division synthesis and are recorded on tape recorder 5 through level detectors 2, 2' and 2'' and special effect amplifier 3. Level detectors 2, 2' and 2'' detect rapid change of the electric signal dependent upon lightning, and their outputs are added in connection point 6 to send a mark signal to recorder 5. Thunderclap dependent upon microphone 4 is recorded simultaneously on this tape. When the tape is reproduced, the direction and the distance of the thunderbolt falling place can be measured surely with a high precision.

7. 发明专利

JPS5565178A MEASURING METHOD OF DIRECTION OF POINT OF FALLING OF THUNDERBOLT 失效
公开(公告)号：JPS5565178A
公开(公告)日：1980-05-16
申请号：JP13886478
申请日：1978-11-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KUSUNOKI MICHIHIKO , KAIZU RIYOUSUKE , KOGA KUNIAKI , ADACHI AKIHIRO
IPC分类号： G01S3/30 , G01W1/16
摘要： PURPOSE:To accurately measure the direction of the point of falling of a thunderbolt, by using the reception antenna for the electromagnetic waves of falling of a thunderbolt, which consists of less number of antenna elements. CONSTITUTION:The induced voltage produced on the antenna elements 1-4 by the falling thunderbolt electromagnetic waves from the falling point is inputted to the level comparison and selection section 7 via the amplifying and detection section 6. The level comparison and selection section 7 compares the DC voltage inputted, selects the maximum value with the next value to output it to the operation section 8, where the calculation of the (maximum value)/(next value) is made and the direction of the falling point is displayed on the display unit 9.

8. 发明专利

JPS54141694A LIGHTNING CURRENT AND LIGHTNING STROKE POSITION DETECTING DEVICE 失效
公开(公告)号：JPS54141694A
公开(公告)日：1979-11-05
申请号：JP4925378
申请日：1978-04-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , MOTOMITSU TAMIO , TAGUCHI MORIHIKO , KUWABARA NOBUO
IPC分类号： G01W1/16 , G01R29/00 , G01R29/08
摘要： PURPOSE:To detect the lightning current and position simultaneously, by providing antennas to detect the vertical and horizontal electric field positions with respect to the ground of the space created by lightning discharge, and determining the field strengths. CONSTITUTION:The device consists of an electric field measuring device 1, an antenna 2 to measure the electric field vertical to the ground (vertical field), an antenna 3 to measure the electric field horizontal to the ground (horizontal field), and an antenna 4 to measure the horizontal field similarly to said antenna 3. The antennas 3 and 4 are disposed at an angle of 90 degrees to each other. The antenna 2 consists of parallel disposed conductor plates 2-1 and 2-3 to measure the electric field between these conductors. This electric field is inputted into an input section 1-1 of the electric field measuring device 1 through a conductor of 2-2, and is detected through an amplifier 1-2. The antennas 3 and 4 are constituted similarly as the antenna 2. Thus constituted, the lightning current and lightning stroke position may be detected easily.

9. 发明专利

JPS5465350A SAFETY DEVICE 失效
公开(公告)号：JPS5465350A
公开(公告)日：1979-05-25
申请号：JP13104177
申请日：1977-11-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , OOTSUKI FUMIO , MOTOMITSU TAMIO
IPC分类号： H02H9/02 , H02H7/20
摘要： PURPOSE:To increase fusing current for steep surge current, by connecting bypass arrester in parallel with fuse circuit comprised of inductance member and a fuse. CONSTITUTION:Safety device provided at the terminal of telephone line is comprised of coil 1 and fuse 1' connected between input terminal 3' and output terminal 5' and bypass arrester 2' connected across them. Consequently when steep current such as lightening surge produces voltage across coil 1 and when it exceeds over predetermined level, bypass arrester 2' functions to bypass surge current to arrester 2' thus to limit current in fuse 1' below prede ermined level, thereby fusing current can be increased without fusing by surge current.

10. 发明专利

JPS5693466A LIGHTENING SURGE FAULT MONITOR DEVICE OF COMMUNICATION LINE 失效
公开(公告)号：JPS5693466A
公开(公告)日：1981-07-29
申请号：JP16927579
申请日：1979-12-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOGA KUNIAKI , KAIZU RIYOUSUKE , KUSUNOKI MICHIHIKO , TAGUCHI MORIHIKO
IPC分类号： H04M3/22 , G01R31/08 , H04B3/46 , H04B17/00 , H04M3/08 , H04Q1/20 , H04Q3/46
摘要： PURPOSE:To detect a surge voltage generation distribution, by providing lines for lightening surge observation radially in the observation region from the monitor point and by comparing the lightening induced voltage, which is generated in a monitor point terminal of each line, with the reference voltage. CONSTITUTION:Voltage comparing part 10 compares the reference voltage, which is determined by reference voltage generating part 11, with the lightening surge voltage invading from the cable conductor. When the lightening surge voltage exceeds reference voltages V1 and V2, only the voltage comparator which detected it transmits the signal to detecting part 12. The sweep detector of detector 12 repeats always sweep; and when the signal from voltage comparing part 10 is detected, the abnormal voltage generation alarm is displayed on abnormal voltage generation display part 13.

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