公开(公告)号：US4023108A

公开(公告)日：1977-05-10

申请号：US650975

申请日：1976-01-21

申请人： Kenichi Torii

发明人： Kenichi Torii

IPC分类号： H03L7/18 ,  H03J5/02 ,  H03J7/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/16

CPC分类号： H03J5/0272 ,  H04B1/28

摘要： An electronically controllable tuning device includes a voltage controlled oscillator adapted to have an oscillation frequency controlled by a control voltage and simultaneously generate a fundamental wave of a predetermined frequency, a programmable frequency divider for dividing the fundamental wave frequency at a frequency division ratio corresponding to the control of a channel selection means and a phase locked loop adapted to compare the fundamental wave phase with the phase of the output of the programmable divider to generate a comparison output and feeding the comparison output back to the voltage controlled oscillator to control the output frequency of the voltage controlled oscillator. The tuning device further includes means for supplying as a local oscillation signal to an intermediate frequency generating mixer one of higher harmonic wave components of the fundamental wave.

摘要翻译： 电子控制调谐装置包括：压控振荡器，其适于具有由控制电压控制的振荡频率并同时产生预定频率的基波;可编程分频器，用于以对应于 频道选择装置和锁相环的控制，适于将基波相位与可编程分频器的输出的相位进行比较以产生比较输出，并将比较输出反馈给压控振荡器以控制输出频率 压控振荡器。 调谐装置还包括用于将基本波的高次谐波分量中的一个作为本地振荡信号提供给中频产生混频器的装置。

公开(公告)号：US06671083B2

公开(公告)日：2003-12-30

申请号：US10101265

申请日：2002-03-20

申请人： Toshiki Tanaka ,  Kenichi Torii ,  Takao Naito

发明人： Toshiki Tanaka ,  Kenichi Torii ,  Takao Naito

IPC分类号： H01S300

CPC分类号： H04B10/2916 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/10023 ,  H01S3/302 ,  H04B10/071

摘要： The present invention aims at providing a Raman amplifier and an optical transmission system, capable of reducing characteristic deterioration to be caused by excitation lights mixedly existing within a wavelength band of signal lights. To this end, the Raman amplifier of the present invention comprises an excitation light source that generates excitation lights having a wavelength band overlapped with a wavelength band of the signal lights, a multiplexing unit that supplies the excitation lights to an optical transmission path, and an optical filter that suppresses optical components which are included in lights propagated through an optical transmission path and are of the same wavelengths as those of the excitation lights.

摘要翻译： 本发明的目的在于提供一种拉曼放大器和光传输系统，其能够降低由混合存在于信号光的波长带内的激发光引起的特性劣化。 为此，本发明的拉曼放大器包括产生具有与信号光的波长带重叠的波长带的激励光的激发光源，将激励光提供给光传输路径的复用部，以及 滤光器，其抑制包含在通过光传输路径传播并且具有与激发光的波长相同的波长的光的光学部件。

公开(公告)号：US06437299B1

公开(公告)日：2002-08-20

申请号：US09605419

申请日：2000-06-27

申请人： Tsutomu Watanabe ,  Kenichi Torii

发明人： Tsutomu Watanabe ,  Kenichi Torii

IPC分类号： G02B6255

CPC分类号： G02B6/2558

摘要： A heating apparatus includes a heater 6 which includes a first heating conductor pattern 1, a second heating conductor patterns 2 and an elongated plate-shaped member 3 made of heat-resistive and insulated material. The first heating conductor pattern 1 is disposed in the central portion in a longitudinal direction of the plate-shaped member 3. The second heating conductor patterns are disposed in both end portions of the plate-shaped member in the longitudinal direction. The first heating conductor pattern 1 and the second heating conductor patterns 2 are independently controlled their temperature. Current is first fed to the first heating conductor pattern 1, and the current feeding is stopped, and current is then fed to the second heating conductor patterns 2. Accordingly, the protective member placed on and along the heater 6 is gradually heated from the center to both ends.

摘要翻译： 加热装置包括加热器6，其包括第一加热导体图案1，第二加热导体图案2和由耐热绝缘材料制成的细长板状构件3。 第一加热导体图案1设置在板状构件3的长度方向的中央部。第二加热导体图案沿长度方向配置在板状构件的两端部。 第一加热导体图形1和第二加热导体图案2独立地控制其温度。 首先将电流馈送到第一加热导体图案1，并且停止电流馈送，然后将电流馈送到第二加热导体图案2.因此，放置在加热器6上并沿着加热器6的保护部件从中心逐渐加热 到两端。

公开(公告)号：US06393299B1

公开(公告)日：2002-05-21

申请号：US09254392

申请日：1999-03-08

申请人： Toru Mizumoto ,  Hiroaki Shimizu ,  Tatsuya Tokunaga ,  Kenichi Torii

发明人： Toru Mizumoto ,  Hiroaki Shimizu ,  Tatsuya Tokunaga ,  Kenichi Torii

IPC分类号： H04B138

CPC分类号： H04B1/006 ,  H03D7/163 ,  H04B1/005 ,  H04B1/406

摘要： In radiocommunication apparatus, two downconverters (41, 42) for use in reception system each heterodyne their respective received RF signal to an intermediate frequency. One of the downconverters employs a local signal generated by a synthesizer (19), and the other employs a signal obtained by dividing the frequency of the local signal by a factor of N. Two upconverters (161, 162) for use in transmission system each convert their respective input transmit signal to a transmit RF signal. One of the upconverters employs a local signal generated by the synthesizer (19) and the other employs a signal obtained by dividing the frequency of the local signal by a factor of N.

摘要翻译： 在无线电通信装置中，两个下变频器（41,42）用于接收系统，每个外差将它们各自接收的RF信号转换成中频。 下变频器中的一个采用由合成器（19）产生的本地信号，另一个采用通过将本地信号的频率除以N因子而获得的信号。每个用于传输系统的两个上变频器（161,162） 将其各自的输入发送信号转换为发射RF信号。 上变频器中的一个采用由合成器（19）产生的本地信号，另一个采用通过将本地信号的频率除以因子N获得的信号。

公开(公告)号：US3999131A

公开(公告)日：1976-12-21

申请号：US625381

申请日：1975-10-24

申请人： Takeo Fukuda ,  Kenichi Torii

发明人： Takeo Fukuda ,  Kenichi Torii

IPC分类号： H03J5/02 ,  H04B1/26

CPC分类号： H03J5/0263

摘要： A channel-selecting apparatus in which is designed to determine the oscillation frequencies of a local oscillator and/or the tuning frequencies of a radio-frequency amplifier for all channels by varying analogue dc voltages being applied to a frequency control element such as a variable capacitance diode included in the oscillator and/or the amplifier in accordance with channel selective operation. Digital memory devices are provided each of which previously stores digital information representing the different predetermined analogue voltages assigned to all the channels being applied to the frequency control element. Digital information stored in the memory devices is read out upon selective operation of any of channel selection switches each coupled with the corresponding one of bistable multivibrators. A series of digital signals thus obtained are supplied to the frequency control element after being converted into a predetermined analogue voltage for the selected channel by a digital-to-analogue converter, whereby any of all the channels by selective operation of any of the channel selection switches can be selected.An automatic channel selection only for the channels now on the air is further effected by a function switch and a clock pulse oscillator designed to initiate the supply of shift or clock pulses to the bistable multivibrators collectively constituting a shift register upon operation of the function switch and terminate the supply upon reception of a first broadcasting wave after the function switch is manipulated.

摘要翻译： 频道选择装置，其被设计成通过改变模拟直流电压来确定本地振荡器的振荡频率和/或所有信道的射频放大器的调谐频率，该模拟直流电压被施加到频率控制元件，例如可变电容 包括在振荡器和/或放大器中的二极管根据通道选择性操作。 提供了数字存储器件，每个数字存储器件预先存储表示分配给施加到频率控制元件的所有通道的不同预定模拟电压的数字信息。 存储在存储器件中的数字信息在选择性地操作任何与每个双稳态多谐振荡器相应的通道选择开关耦合时，被读出。 如此获得的一系列数字信号在通过数模转换器转换成所选频道的预定模拟电压之后被提供给频率控制元件，由此通过选择性地操作任何频道选择 可以选择开关。