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1. 发明专利

JPH01119188A METHOD FOR TRANSMITTING CATV SIGNAL 失效
公开(公告)号：JPH01119188A
公开(公告)日：1989-05-11
申请号：JP27674387
申请日：1987-10-31
申请人： JAPAN BROADCASTING CORP , HITACHI CABLE
发明人： MIYAZAWA HIROSHI , YAMAURA HARUAKI , SUZUKI SHOICHI , BESSHO NORIHIRO , ONO YOSHIKI
IPC分类号： H04N7/20 , H04N7/16
摘要： PURPOSE:To transmit a satellite broadcasting with a high quality to the area of a wide range by transmitting a satellite broadcasting signal up to amplifier kinds in the vicinities of respective receiving terminals by means of a light signal, converting it to an electric signal, and transmitting it to the receiving terminals. CONSTITUTION:A BS-IF electric signal from a satellite broadcasting antenna 1 is converted to a BS-IF light signal by a semiconductor laser diode 5, the light signal is distributed into seven by being inputted to respective multimode optical fibers 6, and it is transmitted through a light transmitting trunk 4 up to a trunk distributing amplifier(TDA) 10 and a trunk branching amplifier(TBA) 12. In such a way, by executing most of the distribution and transmission of the satellite broadcasting by means of the light signal, the transmission with the electric signal can be restricted in a narrow range in the vicinities of the receiving terminals. Thus, the satellite broadcasting with the high quality can be transmitted to the area of the wide range.

2. 发明专利

JPH01152886A CATV SIGNAL TRANSMISSION METHOD 失效
公开(公告)号：JPH01152886A
公开(公告)日：1989-06-15
申请号：JP31303387
申请日：1987-12-10
申请人： JAPAN BROADCASTING CORP , HITACHI CABLE
发明人： MIYAZAWA HIROSHI , ONO YOSHIKI , KOYAMA YUKIO , BESSHO NORIHIRO , SUZUKI SHOICHI , YAMAURA HARUAKI
IPC分类号： H04N7/16
摘要： PURPOSE:To send satellite broadcast with high quality over a wide area with simple method by converting a satellite broadcast electric signal from a satellite broadcast antenna into an optical signal, sending the optical signal to the midpoint of the CATV system, branching it and converting the one into an electric signal to send it to the reception terminal and to send the other to the midpoint. CONSTITUTION:A radio wave received by a satellite broadcast antenna 1 is converted into a BS-IF electric signal in 1-1.3CHz from 12GHz band and sent to an optical transmitter 3 through a coaxial cable 2 while being kept in an FM signal. The BS-IF electric signal is converted into a BS-IF optical signal in the optical transmitter 3 and sent to a position (a) where a trunk line distribution amplifier TDA 10 of the CATV system exists through an optical transmission line 4. The optical branch device 5 is installed to the position (a), one of the branched optical signal is converted into an electric signal by an optical receiver 6 and the other is sent to a position (b) where the next TDA 10 exist via the optical transmission line 4. Thus, the transmission by the electric signal is limited to a narrow range near the reception terminal, then the satellite broadcast with high quality is sent to a wide area.

3. 发明专利

JPS58219473A Heated object detector 失效
标题翻译：加热对象检测器
公开(公告)号：JPS58219473A
公开(公告)日：1983-12-20
申请号：JP10347182
申请日：1982-06-16
申请人： Hitachi Cable Ltd
发明人： ONO YOSHIKI
IPC分类号： G01V8/16 , G01V9/00
CPC分类号： G01V9/005
摘要： PURPOSE:To enable the detection of a heat object in a wide temperature range from low to high temperature value with one equipment by introducing light from a heat object from one optical fiber bundle through an optical coupler with two kind of light receiving elements fixed connected in parallel on the same stem. CONSTITUTION:Light receiving elements 4a and 4b have an anode and cathode fixed on the same stem connected in parallel to each other and output thereof is applied to an amplifier. Light radiated from a heat object enters the light receiving elements 4a and 4b through an optical coupler 3 from an optical fiber bundle 1. In the case of a high temperature heat object, a silicon-based light receiving element 4a captures a radiated light therefrom while in the case of a low temperature heat object, a gelumanium-based light receiving element 4b captures a radiated light therefrom. The application of outputs thereof to the amplifier 5 enables the detection on the presence of the heat object ranging from 400 deg.C (low) - 1,500 deg.C (high).
摘要翻译：目的：为了能够在一个设备的宽温度范围内检测热物体，通过引入来自一个光纤束的热物体的光，通过光耦合器引入两个固定连接的光接收元件平行于相同的茎。构成：光接收元件4a和4b具有固定在彼此并联连接的同一茎上的阳极和阴极，并且其输出被施加到放大器。从热物体辐射的光通过光耦合器3从光纤束1进入光接收元件4a和4b。在高温热物体的情况下，硅基光接收元件4a从其中捕获辐射光，而在低温热物体的情况下，基于硅胶的光接收元件4b从其中捕获辐射光。将其输出应用于放大器5使得能够检测在400摄氏度（低）-100摄氏度（高）范围内的热物体的存在。

4. 发明专利

JPS63316941A SIGNAL TRANSMISSION METHOD 失效
公开(公告)号：JPS63316941A
公开(公告)日：1988-12-26
申请号：JP15305187
申请日：1987-06-19
申请人： HITACHI CABLE
发明人： SUZUKI SHOICHI , BESSHO NORIHIRO , ONO YOSHIKI
IPC分类号： H04B7/15
摘要： PURPOSE:To eliminate deviation between the frequencies of a rebroadcasting wave and an original broadcasting wave and to effectively use a radio wave frequency, by converting the frequency of a receiving broadcasting wave to a lower frequency by using a local transmission signal by a receiving station, and converting it to the same frequency as that of the original broadcasting wave synchronizing with the receiving station by using the above local transmission signal by a transmitting station. CONSTITUTION:In the receiving station 10, the output of an oscillator 15 is distributed to two signals by a distributor 16, and one signal is supplied to a mixer 12 via a multiplier 17, and the receiving broadcasting wave is converted to an intermediate frequency signal, and is supplied to a branching filter 14. The other signal of the distributor 16 is supplied to the branching filter 14 as a synchronizing signal, and is synthesized with the intermediate frequency signal at the branching filter 14, then, it is transmitted from an optical transmitter 18 to the transmitting station 20. At the transmitting station 20, the signal is separated to the intermediate frequency signal and the synchronizing signal by a branching filter 22, and the intermediate frequency signal is supplied to a mixer 24, and the synchronizing signal is supplied to the mixer 24 via a multiplier 26, and at the mixer 24, the intermediate frequency signal is converted to a broadcasting wave having the same frequency as that of the receiving broadcasting wave by the local transmission signal from the multiplier 26, then, it is transmitted as the re-transmission wave. The said broadcasting wave is synchronized with the receiving broadcasting wave, and they become the waves with the same carrier frequencies.

5. 发明专利

JPH0477489B2 失效
公开(公告)号：JPH0477489B2
公开(公告)日：1992-12-08
申请号：JP15305187
申请日：1987-06-19
申请人： HITACHI CABLE
发明人： SUZUKI SHOICHI , BETSUSHO NORIHIRO , ONO YOSHIKI
IPC分类号： H04B7/15

6. 发明专利

JPS58205312A Optical receiving circuit 失效
标题翻译：光接收电路
公开(公告)号：JPS58205312A
公开(公告)日：1983-11-30
申请号：JP8842182
申请日：1982-05-25
申请人： Hitachi Cable Ltd
发明人： ONO YOSHIKI , KATOU MASAAKI
IPC分类号： H03F3/34 , H03F3/08 , H04B10/00 , H04B10/40 , H04B10/50 , H04B10/60
CPC分类号： H03F3/087
摘要： PURPOSE:To reduce the power consumption, by connecting power supply terminals of an operational amplifier to a positive (or negative) potential and ground potential, connecting a potential dividing the power supply to a non-inverting input terminal, grounding an inverting input terminal via a photodetector and connecting a feedback resistor from the output. CONSTITUTION:A signle power supply only is used as the power supply, and a voltge Vcc/4 dividing the power supply with resistors R1, R2 is applied to the non-inverting input. As a result, the dynamic range is 3Vcc/4; from Vcc/4 to Vcc. Further, the power consumption is Ic.Vcc. In using a positive/negative dual power supply, the non-invering input terminal is grounded and the output is unipolar, then the dynamic range becomes Vcc. Further, the power consumption is 2Vcc.Ic. Thus, the value of power consumption/dynamic range can be made smaller than that of the dual power supply, the power consumption to obtain the same dynamic range can be made smaller, and the single power supply may be used.
摘要翻译：目的：为了降低功耗，通过将运算放大器的电源端子连接到正（或负）电位和接地电位，连接将电源分配到非反相输入端子的电位，将反相输入端子通过一个光电检测器，并从输出端连接反馈电阻。构成：仅使用信号电源作为电源，Vcc / 4的电压Vcc / 4与电阻R1，R2分压供给非反相输入。结果，动态范围为3Vcc / 4; 从Vcc / 4到Vcc。此外，功耗为Ic.Vcc。在使用正/负双电源时，非反相输入端接地，输出为单极，动态范围为Vcc。此外，功耗为2Vcc.I。因此，可以使功耗/动态范围的值小于双电源的功率，可以使得获得相同的动态范围的功耗更小，并且可以使用单个电源。

7. 发明专利

JPS6119189B2 JPS6119189B2 - 失效
公开(公告)号：JPS6119189B2
公开(公告)日：1986-05-16
申请号：JP7952079
申请日：1979-06-22
申请人： Hitachi Cable
发明人： ONO YOSHIKI , ASAI TAKAHIRO , KONDO ISAO
IPC分类号： H04B10/60 , H01L31/10 , H04B10/00 , H04B10/2507 , H04B10/40 , H04B10/50
CPC分类号： H04B10/6973

8. 发明专利

JPS5843612A VARIABLE ATTENUATOR 失效
公开(公告)号：JPS5843612A
公开(公告)日：1983-03-14
申请号：JP14264681
申请日：1981-09-10
申请人： HITACHI CABLE
发明人： ONO YOSHIKI , ASAI TAKAHIRO
IPC分类号： H03H11/24
摘要： PURPOSE:To remarkably reduce a distortion rate, by connecting in parallel and using 2 FETs having the same characteristics, as an FET. CONSTITUTION:2 FETs having the same characteristics are connected in parallel and are used as an FET, and as for one FET 2, a drain terminal D, a source terminal S and a gate terminal G are connected to an output side, ground and so as to be attenuation quantity control terminal, respectively, and as for the other FET 8, a source terminal S, a drain terminal D and a gate terminal G are connected to an output side, ground and so as to be an attenuation quantity control terminal, respectively. In such a constitution, distortion can be reduced remarkably.

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