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51. 发明专利

JPS60200653A FAULTY STATION DISCRIMINATING SYSTEM 失效
公开(公告)号：JPS60200653A
公开(公告)日：1985-10-11
申请号：JP5768584
申请日：1984-03-26
申请人： FUJITSU LTD
发明人： SEKI YOSHIAKI , TANAKA ISAO , HONDA MASANORI
IPC分类号： H04L25/02 , H04B1/60 , H04L13/06 , H04L27/00
摘要： PURPOSE:To discriminate a fault by a fixed pattern discriminating circuit, and to confirm a station in which the fault is occured, by assigning each different fixed pattern to a transmitting board and a receiving board, respectively, and sending out the fixed pattern assigned to each of them to the other station from a station which is detected the fault, when the fault is generated. CONSTITUTION:A regenerated data fetched from a radio wave received by a receiving part 20 is inputted to a branching and inserting part 22 through a relay contact r1-1, and the regenerated data made to branch by this repeater station is outputted to the outside from a terminal 25, and to the remaining regenerated data, a data inserted from a terminal 26 is provided, and it is sent out to the other station from a transmitting part 24 through a relay contact part r1-3. However, if a pulse cut-off detector 3 or 4 detects a fact that a data pulse which is outputted from the receiving part 20 or inputted to the transmitting part 24 is cut off, the relay contact r1-1 or r1-3 becomes off and the relay contact r1-2 or r1-4 becomes on by its output. As a result, a fixed pattern generating part 21 or 23 becomes on, therefore, for instance, a pattern fixed to a receiving board or a transmitting board of its station is sent out to the other station through the transmitting part 24.

52. 发明专利

JPS6011498B2 失效
公开(公告)号：JPS6011498B2
公开(公告)日：1985-03-26
申请号：JP13106277
申请日：1977-10-31
申请人： NIPPON ELECTRIC CO
发明人： SUZUKI TOSHINOBU , ROKUGO YOSHINORI
IPC分类号： H04L1/22 , G01D5/12 , G08C15/00 , G08C25/00 , H04B1/60 , H04B1/74 , H04B3/46

53. 发明专利

JPS59204333A Automatic return tester 失效
标题翻译：自动返回测试仪
公开(公告)号：JPS59204333A
公开(公告)日：1984-11-19
申请号：JP7862983
申请日：1983-05-04
申请人： Nec Corp
发明人： TERUI KOUKI
IPC分类号： H04B17/00 , H04B1/60
CPC分类号： H04B1/60
摘要： PURPOSE:To suppress the time of circuit disconnection as much as possible and to improve the reliability of a circuit by conducting a return test only when an abnormal state continues for a specific time after abnormality of a receiver is detected. CONSTITUTION:An automatic return tester 2 is set normally in a stand-by state. When the receiver 1 becomes abnromal and its detection signal is applied to a logical circuit 3, the circuit 3 drives an oscillator 4 when the detection signal is in the same state continuously for longer than the specific time. A shifter 6 generates a signal of the same frequency with a receiving signal by a signal from the side of a transmitter 5 and a signal from the oscillator 4 and sends out the signal to the receiver 1 through a BPF7 and a coupler 8. When this signal is outputted to the output terminal of the receiver 1, the circuit 3 decides that the receiver 1 is normal, and when no, it is decided that the receiver 1 is faulty. The circuit 3 does not conduct the return test when the abnromality detection signal is ceased within the specific time.
摘要翻译：目的：尽可能地抑制电路断开的时间，并且仅当检测到接收机异常之后异常状态持续特定时间时，通过进行返回测试来提高电路的可靠性。规定：自动返回测试仪2通常处于待机状态。当接收机1变为异常并且其检测信号被施加到逻辑电路3时，当检测信号连续地处于相同状态长于特定时间时，电路3驱动振荡器4。移位器6通过来自发射机5侧的信号和来自振荡器4的信号，利用接收信号产生与频率相同的信号，并通过BPF7和耦合器8将信号发送到接收机1.当这样信号被输出到接收机1的输出端子，电路3判定接收机1正常，否则判断为接收机1故障。当在特定时间内停止异常检测信号时，电路3不进行返回测试。

54. 发明专利

JPS577639A FAULT MONITORING CIRCUIT 失效
公开(公告)号：JPS577639A
公开(公告)日：1982-01-14
申请号：JP8203480
申请日：1980-06-17
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KIYOTA SHINJI , KATOU MASAMI
IPC分类号： H04B1/60 , H01S5/068 , H04B17/00 , H04Q9/00
摘要： PURPOSE:To miniaturize a repeater by sending pieces of fault monitoring information to a monitor station through one interposing line successively. CONSTITUTION:A current flowing through a laser diode is converted by a resistance R into a voltage V1, which is detected by a comparator 12. When the laser diode 12 varies, the detected voltage changes from V1 to V1'. When an optical PCM repeater is normal, a V2 is applied to a terminal 15 and when not, a V3 is inputted. The V3 is inputted to a transistor (TR) 17 as information with top priority among V1, V1-V1', V2, and V3. When the base voltage of the TR17 is (V1 or V1-V1')+(V2=0)+V3, information on the break of a repeater input signal is detected and when the V1 is normal, a normal state is detected; when it is greater than the V1 and less than the V1', a fault of the laser diode is detected. This detection information is converted by a V.F converter 18 into a frequency, which is transferred to a monitor station 21 via an interposing line 20. Consequently, the repeater is miniaturized.

55. 发明专利

JPS5531392A SUPERVISORY SYSTEM OF FM RADIO RECEIVER 失效
公开(公告)号：JPS5531392A
公开(公告)日：1980-03-05
申请号：JP10583278
申请日：1978-08-29
申请人： NIPPON ELECTRIC CO
发明人： NAGAYAMA HIROAKI , TAJIMA NORIO
IPC分类号： H04B7/005 , H04B1/60 , H04B17/00
摘要： PURPOSE:To exercise a supervision over the reception input electric field of each unattended repeater station by obtaining a signal, which follows up variation in reception input electric field by mixing a received wave and a low-level sine wave in front of a receiving AGC amplifier. CONSTITUTION:A FM carrier received by receiving antenna 2 of FM radio repeater 1 is converted into an intermediate frequency carrier signal by receiving frequency converter 3. Then, this signal is mixed by coupler 5 in a constant-level signal at a low level outputted by reception-input electric-field supervisory sine-wave oscillator 4. This composite wave is sent out from transmitting antenna 8 by way of main intermediate frequency amplifier 6 and transmitter circuit 7. This signal is received by receiving antenna 10 of FM receiver 9 and converted into an intermediate frequency signal by passing through reception frequency converter 11 before being inputted to FM demodulator 13 by way of main intermediate frequency amplifier 12. A level difference between this input intermediate-frequency-band FM carrier and supervisory signal is equivalent to the level variation of the reception input electric field at the point in time of coupling by coupler 5 of repeater 1. The beat signal level of the output of demodulator 13 is therefore the level difference.

56. 发明专利

JPS5425610A MONITOR SYSTEM OF CONSOLE OPEN CONDITION 失效
公开(公告)号：JPS5425610A
公开(公告)日：1979-02-26
申请号：JP9124277
申请日：1977-07-28
申请人： NIPPON ELECTRIC CO
发明人： FUJISAWA MASATOSHI , YAMAGA CHIKAYUKI
IPC分类号： H04B17/00 , H04B1/60 , H04B17/40 , H05K5/03
摘要： PURPOSE:To detect the condition of cover whether it is opened or not by checking the short circuit of inserted wire and to enable the location of open cover with the trieval current oscillating frequency easily, in a unit detecting open cover for the consoles of a plurality of unattended relay stations located on communication delivery lines.

57. 发明专利

JPS5337311A INFORMATION TRANSMISSION SYSTEM 失效
公开(公告)号：JPS5337311A
公开(公告)日：1978-04-06
申请号：JP11234376
申请日：1976-09-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIDA KATSUHIKO , KAMEOKA TAKAHARU
IPC分类号： H04B7/15 , H04B1/60 , H04B17/00 , H04B17/40
摘要： PURPOSE:To transmit the content of fault to the place such as monitor room without injuring the essential functions such as broadcast at fault, by transmitting the phase of carrier signal with inversion or non-inversion depending on the information to be transmitted and by reproducing the pulse thru the detection of the phase at the reception side.

58. 发明专利

JPS5144771B1 失效
公开(公告)号：JPS5144771B1
公开(公告)日：1976-11-30
申请号：JP1906271
申请日：1971-03-31
IPC分类号： H04B1/60 , H04N5/00 , H04N7/10 , H04N7/16

59. 发明专利

JPS4973015A 失效
公开(公告)号：JPS4973015A
公开(公告)日：1974-07-15
申请号：JP10788473
申请日：1973-09-25
IPC分类号： H04B17/00 , H04B1/60

60. 发明专利

JPS4826407A 失效
公开(公告)号：JPS4826407A
公开(公告)日：1973-04-07
申请号：JP6026071
申请日：1971-08-11
IPC分类号： H03H7/01 , H01H3/28 , H01H51/00 , H01H51/10 , H01H63/00 , H01H63/20 , H04B1/60 , H04B3/00 , H04B3/02 , H04B3/04

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