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1. 发明专利

JPS6063508A MANUFACTURE OF OPTICAL CONNECTOR 失效
公开(公告)号：JPS6063508A
公开(公告)日：1985-04-11
申请号：JP17238983
申请日：1983-09-19
申请人： HITACHI CABLE
发明人： SUDOU TETSUO , KONDOU ISAO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To prevent generation of a microbend, and also to stabilize a light transmitting property by injecting an adhesive agent to a ferrule, and thereafter, executing a processing for applying an acceleration in the direction of a ferrule tip capillay rise from an optical fiber inserting port side, and inserting an optical fiber. CONSTITUTION:When an adhesive agent 1 is injected to a ferrule 2, an air bubble 3 is left in the adhesive agent, and in order to remove this air bubble 3, a suitable acceleration is applied in the direction of a capillary 4 side from an optical fiber inserting port 17 side by providing the ferrule 2 to which the adhesive agent 1 has been injectd, so that a centrifugal acceleration is applied in the designated direction by using, for instance, a centrifugal separating device, etc., and executing its high speed rotation, etc. By this processing, the air bubble 3 in the adhesive agent 1 in the ferrule 2 is removed. Thereafter, an optical fiber is inserted in the direction of the capillary 4. In this way, generation of a microbend can be prevented, and a light transmitting property can be stabilized.

2. 发明专利

JPS562673A OPTICAL RECEIVER CIRCUIT 失效
公开(公告)号：JPS562673A
公开(公告)日：1981-01-12
申请号：JP7952079
申请日：1979-06-22
申请人： HITACHI CABLE
发明人： ONO ZENKI , ASAI TAKAHIRO , KONDOU ISAO
IPC分类号： H04B10/60 , H01L31/10 , H04B10/00 , H04B10/2507 , H04B10/40 , H04B10/50
摘要： PURPOSE:To obtain large SN ratio without any decrease in a load impeadance of an optical receiver element at high frequency band by a method wherein a band- pass filter is built with positive utilization of static capacity which is accompanied by optical reciever element and an input of an amplifier. CONSTITUTION:By a band-pass filter being built between an optical receiver element 1 which has a stray capacity 4 and an amplifier 3 which has an input capacity 5 operational frequency band is widened. That is to say the element 1 is grounded through a resistor 2, and an inductance 7, and a variable capacitor 10 is put between the element 1 and the amplifier 3 in series. And beteen an inductance 7 and the connecting point of the element 1 and resistor 2, an inductance 6 and a variable capacitor 9 which are grounded respectively are added, and between the capacitor 10 and the amplifier 3 an inductance 8, a variable capacitor 11 and a resistor 12 which has the same resistance value as the resistor 2 are also added, and another terminals of them are grounded respectively. By this method there is no decrease in the load impeadance of device 1, and no attenuation takes place in signal voltage.

3. 发明专利

JPS57136437A HEART INNER PRESSURE MEASURING APPARATUS 失效
公开(公告)号：JPS57136437A
公开(公告)日：1982-08-23
申请号：JP2195781
申请日：1981-02-17
申请人： HITACHI CABLE
发明人： YASUDA TSUTOMU , MATSUMOTO HIROSHI , KOBAYASHI KENJI , ONO ZENKI , KONDOU ISAO , SONE FUMIKI , ASAI TAKAHIRO
IPC分类号： A61B5/0215 , A61B5/02

4. 发明专利

JPS5245204A COMMUNICATION SYSTEM 失效
公开(公告)号：JPS5245204A
公开(公告)日：1977-04-09
申请号：JP12110875
申请日：1975-10-07
申请人： HITACHI CABLE
发明人： ITOU YOSHIKI , KONDOU ISAO , KOYAMA YUKIO
IPC分类号： H04B1/58 , H04B1/38 , H04B1/54
摘要： PURPOSE:To improve articulation of communication by adding demodulator output signals and transmitter output signals to a hybrid circuit and erasing the in-phase component, in a duplex communication system between a master device and a branch device.

5. 发明专利

JPS561909A CONNECTING METHOD OF OPTICAL FIBER 失效
公开(公告)号：JPS561909A
公开(公告)日：1981-01-10
申请号：JP7858979
申请日：1979-06-20
申请人： HITACHI CABLE
发明人： KONDOU ISAO , OKADA SHIGEO
IPC分类号： G02B6/26 , G02B6/28 , G02B6/35 , G02B6/42
摘要： PURPOSE:To achieve the improvement in the rate of coupling by reducing the diameter of the ends of rod lenses only on one side, fuion-bonding and connecting the ends on the reduced diameter side and optical fibers and connecting the optical fibers to each other by way of the rod lenses or to terminal apparatus. CONSTITUTION:Only one side of the end of a rod lens 1 is heated and elongated by a heat source 6. An optical fiber 2 is fusion-bonded to the end on the reduced- diameter side of the rod lens 1 obtained in this way by using an electrode 3. By using the constitution obtained by such process, direct connection, selective connection by a prism 7, branched connection by a half mirror 8 and the terminal connection with a light emitting diode 5 may be accomplished. Since the outside diameter of one end of the rod lens 1 is constituted to a smaller diameter in this way, the connection with the optical fiber 2 is easy and highly accurate, the occurrence of misalignment after the connection is obviated and the stably high coupling rate may be obtained.

6. 发明专利

JPS5494817A SELECTION SYSTEM OF MULTIPLEX SYSTEM 失效
公开(公告)号：JPS5494817A
公开(公告)日：1979-07-26
申请号：JP214078
申请日：1978-01-12
申请人： HITACHI CABLE
发明人： SATOU TERUTSUGU , ASAI TAKAHIRO , KONDOU ISAO
IPC分类号： H04B1/74 , H04B3/04
摘要： PURPOSE:To increase the reliability of circuit, by performing the selection of system through the durability of outpout pulse for the monostable multivibrator having retrigger functions. CONSTITUTION:The signal of the maximum pulse width t is fed to the a main system A and the subsystem B, and normally, signal is fed to the output C from the main system A via the selector 5. The main system A and the subsystem B are connected respectively with the monostable multivibrators 1,2 having the retrigger function. Since the output pulse width of the monostable multivibrators 1,2 is set greater than the maximum pulse width t of signal, the output pulse permanently continues until the signal is present. If the main system A is in failure, the output pulse from the monostable multivibrator 1 is stopped, resulting that the selector 5 selects it to the subsystem B and a signal is fed to the output C from the subsystem B.

7. 发明专利

JPS53123890A DETECTING METHOD OF ABNORMAL HEATING AT THE JOINT OF FEEDER LINE 失效
公开(公告)号：JPS53123890A
公开(公告)日：1978-10-28
申请号：JP3884177
申请日：1977-04-05
申请人： HITACHI CABLE
发明人： SHIROTORI MUTSUMI , ADACHI YOSHIO , OOKUBO SEIICHI , KANATSU ISAMU , KONDOU ISAO
IPC分类号： H01R9/05 , H01R43/00
摘要： PURPOSE:To detect abnormal heating at joint thus to prevent damage at joint, by inserting packed blowing agent into gas path at the joint and detecting variation of gas flow.

8. 发明专利

JPS5582967A MEASURING METHOD FOR ELECTRIC SIGNAL WAVEEFORM USING OPTICALLFIBER 失效
公开(公告)号：JPS5582967A
公开(公告)日：1980-06-23
申请号：JP15715278
申请日：1978-12-19
申请人： HITACHI CABLE
发明人： KONDOU ISAO , ASAI TAKAHIRO , OKADA SHIGEO , KAJIOKA HIROSHI , TAKEDA KAZUHIKO
IPC分类号： G01R13/22 , G01R15/22
摘要： PURPOSE:To measure a wave form of the signals of an electric circuit charged to high voltage easily, safely and accurately, by a system wherein signals to be measured are converted into light-signals, and guided to a light receiving element through an optical-fiber, and original electric signals are regenerated. CONSTITUTION:Electric signals to be measured are applied to a signal input terminal 51, and matched to the input impedance of a luminous element 60 by using an active element of an FET, etc. Fixed currents are beforehand let flow when the input voltage of an impedance matching circuit 50 is zero volt so that even input signals with inverse polarity can be used. The luminous-output of the light emitting element 60 is transmitted by means of an optical-fiber 70, and converted into electric signals by means of a light receiving element 80. The electric signals regenerated are amplified by means of an amplifier 90, applied to an oscilloscope 100 and observed. Thus, a portion charged to high voltage can be measured by employing a normal oscilloscope.

9. 发明专利

JPS54152429A CONTACT INFORMATION INPUT CIRCUIT 失效
公开(公告)号：JPS54152429A
公开(公告)日：1979-11-30
申请号：JP6078878
申请日：1978-05-22
申请人： HITACHI CABLE
发明人： ASAI TAKAHIRO , KONDOU ISAO , SATOU TERUTSUGU , OOHATA YUTAKA
IPC分类号： G06F3/02 , H03K5/00 , H03K5/13
摘要： PURPOSE:To improve noise-suppression effect by interposing a switch circuit composed of diodes in addition to the combination of a pull-up resistance and a low- noise filter. CONSTITUTION:When relay contact 1 is broken, diodes 8 and 9 are both OFF and an input voltage to IC gate 2 is held at the voltage (+5) of power terminal 3. External noises, made at the transmission line between relay contact 1 and resistance 11, are cut off by diodes. With relay contact 1 made, diodes 8 and 9 thru ON by the negative power supply connected to terminal 12 and although the cathode potential of diode 9 is reversely biased by a forward voltage drop, setting resistances 4 and 5 to adequate values decreases the input to IC gate 2 down to OV. Since diode 9 is ON, external noises are suppressed here.

10. 发明专利

JPS54149507A Multiplex transmission system 失效
标题翻译：多路传输系统
公开(公告)号：JPS54149507A
公开(公告)日：1979-11-22
申请号：JP5914878
申请日：1978-05-17
申请人： Hitachi Cable Ltd
发明人： KONDOU ISAO , ASAI TAKAHIRO , SATOU TERUTSUGU
IPC分类号： H04L5/22 , H04L7/08
摘要： PURPOSE: To realize multiplex transmission, hard to become out of synchronism, which makes it possible to distinguish definitely the synchronizing signal of any input data.
CONSTITUTION: One frame is composed of four words and each word is of ten- bit constitution with two out of ten assigned for a synchronous pattern. When a series signal of the above frame constitution arrives, a clock component is extracted from the signal by clock extraction circuit 41 so as to obtain a clock signal which synchronizes with the transmission side. By this clock signal, word generating circuit 42 forms exactly the same word-synchronous pattern as the transmission side and word-synchronous pattern comparator circuit 43 compares this word synchronous pattern with that in the received series signal; when the both disagree, shift- pulse generating circuit 44 is triggered to generate a shift pulse, which is supplied to a rotary switch at the rception side, thereby making a shift.
COPYRIGHT: (C)1979,JPO&Japio
摘要翻译：目的：实现多路复用传输，难以失去同步，从而可以明确区分任何输入数据的同步信号。构成：一帧由四个单词组成，每个单词都是十位构成，十分之二用于同步模式。当上述帧结构的串行信号到达时，通过时钟提取电路41从信号中提取时钟分量，以获得与发送侧同步的时钟信号。通过该时钟信号，字生成电路42与发送侧形成完全相同的字同步模式，并且字同步模式比较电路43将该字同步模式与接收的串联信号中的字同步模式进行比较; 当两个不同意的移位脉冲发生电路44被触发以产生移位脉冲，该移位脉冲被提供给在外侧的旋转开关，从而进行移位。

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