专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4375037A Receiving circuit 失效
标题翻译：接收电路
公开(公告)号：US4375037A
公开(公告)日：1983-02-22
申请号：US222768
申请日：1981-01-06
申请人： Ichiro Ikushima
发明人： Ichiro Ikushima
IPC分类号： H04L25/03 , H03K5/08 , H03K5/153 , H03K5/24
CPC分类号： H04B10/695 , H03K5/082
摘要： In a receiving circuit wherein a digital input signal is compared with a reference voltage and is regenerated into a pulse information signal of "1" or "0" value, a circuit for producing the reference voltage is constructed of a peak detector circuit which detects the maximum value of the output of a preprocessing circuit for the input signal, a reference preprocessing circuit which has the same circuit arrangement as that of the first-mentioned preprocessing circuit except for receiving no input signal, and a voltage divider circuit which divides the sum of the output of the peak detector circuit and an output of the reference preprocessing circuit. With such an arrangement, even when the amplitude of the input digital signal has fluctuated, a pulse signal whose pulse width is subjected to substantially no variation can be regenerated by means of the simple circuitry.
摘要翻译：在将数字输入信号与参考电压进行比较并再生成“1”或“0”值的脉冲信息信号的接收电路中，用于产生参考电压的电路由峰值检测器电路构成，该电路检测用于输入信号的预处理电路的输出的最大值，除了不接收输入信号之外，具有与前述预处理电路相同的电路布置的参考预处理电路以及分频电路峰值检测器电路的输出和参考预处理电路的输出。通过这样的布置，即使输入数字信号的振幅波动，脉冲宽度基本上不变化的脉冲信号也可以通过简单的电路再生。

2. 发明授权

US4199222A Optical device with a laser-to-fiber coupler 失效
标题翻译：具有激光对光纤耦合器的光学器件
公开(公告)号：US4199222A
公开(公告)日：1980-04-22
申请号：US849645
申请日：1977-11-08
申请人： Ichiro Ikushima , Mitsuo Tanaka , Minoru Maeda
发明人： Ichiro Ikushima , Mitsuo Tanaka , Minoru Maeda
IPC分类号： G02B6/26 , G02B6/42 , G02B5/14
CPC分类号： G02B6/421 , G02B6/262 , G02B6/4206 , G02B6/4248 , G02B6/4292
摘要： A laser-to-fiber coupler is constructed by an optical waveguide arranged between a semiconductor laser and a transmitting optical fiber through which an optical beam emanating from the laser is transmitted in order to reduce the amount of a reflection beam from the optical fiber, which is injected into the active layer of the semiconductor laser.The waveguide is made by an optical fiber of which at least one of core radius or numerical aperture (N.A.) is smaller than those of the transmitting optical fiber.
摘要翻译：激光对光纤耦合器由布置在半导体激光器和发射光纤之间的光波导构成，通过该光波导传输从激光器发出的光束，以减少来自光纤的反射光束的量，被注入到半导体激光器的有源层中。波导由其中核心半径或数值孔径（N.A.）中的至少一个小于发射光纤的光纤的光纤制成。

3. 发明授权

US4174491A Mount for a light emitting device 失效
标题翻译：安装用于发光设备
公开(公告)号：US4174491A
公开(公告)日：1979-11-13
申请号：US918275
申请日：1978-06-22
申请人： Satoshi Nakamura , Ichiro Ikushima , Yoshimitsu Sasaki , Katuaki Chiba , Ryoichi Ito
发明人： Satoshi Nakamura , Ichiro Ikushima , Yoshimitsu Sasaki , Katuaki Chiba , Ryoichi Ito
IPC分类号： G02B6/36 , G02B6/38 , G02B6/42 , H01L23/12 , H01L33/40 , H01L33/44 , H01L33/58 , H01L33/62 , H01L33/64 , H01L33/00 , H01S3/00 , H05B33/04
CPC分类号： G02B6/4248 , G02B6/3855 , G02B6/4204 , G02B6/423 , G02B6/3652 , G02B6/3692 , H01L2224/45014 , H01L2224/45144 , H01L2224/48092 , H01L24/45 , H01L2924/00014 , H01L2924/12041 , H01L2924/12042 , H01L2924/16195 , H01L2924/30107 , H01L33/58 , H01L33/62
摘要： A mount for a light emitting device, which includes a first silicon substrate provided with first holding grooves of trapezoidal cross-section for mounting optical parts arranged in the vicinity of the light emitting plane of a light emitting element and a positioning groove for the light emitting element on the surface thereof, a second silicon substrate provided with second holding grooves having a trapezoidal cross-section similar to that of the first grooves for holding the optical parts and a hole portion for inserting the light emitting element, and a covering member for air tightly covering the hole portion, whereby the optical parts and the light emitting element of the light emitting device are tightly sealed by the above-stated means. The first and second holding grooves have the silicon crystal plane of (111) as both the side surfaces of their trapezoidal cross sections, and extend in the silicon crystal orientation of .
摘要翻译：一种用于发光器件的安装件，其包括第一硅衬底，该第一硅衬底设置有用于安装布置在发光元件的发光平面附近的光学部件的梯形横截面的第一保持槽和用于发光的定位槽第二硅衬底，其具有第二保持槽，该第二保持槽具有类似于用于保持光学部件的第一槽的梯形截面和用于插入发光元件的孔部分，以及用于空气的覆盖部件紧密地覆盖孔部分，由此通过上述装置将发光装置的光学部件和发光元件紧密地密封。第一和第二保持槽具有（111）的硅晶面作为其梯形截面的侧表面，并且以<110>的硅晶体取向延伸。

4. 发明授权

US4774480A Phase-locked loop having separate smoothing and loop filters 失效
标题翻译：锁相环具有独立的平滑和环路滤波器
公开(公告)号：US4774480A
公开(公告)日：1988-09-27
申请号：US19113
申请日：1987-02-26
申请人： Hideo Sato , Kazuo Kato , Takashi Sase , Kenichi Onda , Ichiro Ikushima
发明人： Hideo Sato , Kazuo Kato , Takashi Sase , Kenichi Onda , Ichiro Ikushima
IPC分类号： H03L7/091 , H03L7/08
CPC分类号： H03L7/091 , Y10S331/02
摘要： A PLL comprising a phase comparator circuit for detecting the phase of a pulse signal based upon the input signal and the phase of a pulse signal based upon the output signal, a smoothing filter for smoothing the output of the phase comparator circuit, a loop filter for controlling the oscillation frequency on the basis of the smoothing filter, and a voltage controlled oscillator circuit for sending out the output signal having a frequency corresponding to the voltage based upon the output of the loop filter. Since the smoothing filter is separated from the loop filter, time constants of the smoothing filter and the loop filter can be set independently and with precision. If the time constant of the smoothing filter is chosen to be extremely small, for example, the time constant of the phase-locked loop is defined by the time constant of the loop filter. It is thus possible to define the time constant of the phase-locked loop by only selecting the time constant of the loop filter. Further it is possible to both suppress the jitter of the phase-locked loop and reduce the frequency ripple, for example.
摘要翻译：一种PLL，包括相位比较器电路，用于基于输入信号检测基于输入信号和脉冲信号的相位的脉冲信号的相位;平滑滤波器，用于平滑相位比较器电路的输出;环路滤波器，用于基于平滑滤波器控制振荡频率，以及压控振荡器电路，用于根据环路滤波器的输出发出具有与电压对应的频率的输出信号。由于平滑滤波器与环路滤波器分离，平滑滤波器和环路滤波器的时间常数可以独立且精确地设置。如果选择平滑滤波器的时间常数极小，则锁相环的时间常数由环路滤波器的时间常数决定。因此，可以通过仅选择环路滤波器的时间常数来定义锁相环的时间常数。此外，例如，可以抑制锁相环的抖动并降低频率波动。

5. 发明授权

US4749961A Voltage controlled oscillator and phase-locked loop using it 失效
标题翻译：使用压控振荡器和锁相环
公开(公告)号：US4749961A
公开(公告)日：1988-06-07
申请号：US31836
申请日：1987-03-26
申请人： Kazuo Kato , Takashi Sase , Hideo Sato , Kenichi Onda , Ichiro Ikushima
发明人： Kazuo Kato , Takashi Sase , Hideo Sato , Kenichi Onda , Ichiro Ikushima
IPC分类号： H03L7/08 , H03L7/099 , H03L7/14 , H03K3/281
CPC分类号： H03L7/148 , H03L7/099 , Y10S331/02
摘要： A voltage controlled oscillator is provided which includes a pair of gain stages constituting a positive feedback path, a pair of buffer stages in cross connection with the gain stages, a pair of loads connected with the corresponding gain stages, each having a parallel connection of an active device resistor and a clamping diode, and a pair of voltage controlled current sources connected with the corresponding gain stages, for supplying constant currents to the gain stages. A timing capacitor is connected with the input sides of both voltage controlled current sources, and is charged or discharged by the constant currents from the current sources. The oscillator further includes a pair of variable bias generating means, connected with the corresponding buffer stages, for generating variable bias voltages are provided, each of which varies the bias voltage to be applied to the corresponding active device in accordance with the output of the corresponding buffer stage in such a manner that the bias voltage is properly set in accordance with the constant current value of said constant current source so as to set the on-resistance of said active device to a suitable value corresponding to the constant current value. With this arrangement the loop gain of the VCO is made constant regardless of the constant current value.
摘要翻译：提供压控振荡器，其包括构成正反馈路径的一对增益级，与增益级交叉连接的一对缓冲级，与相应的增益级连接的一对负载，每一级均具有有源器件电阻器和钳位二极管，以及与相应增益级相连的一对电压控制电流源，用于向增益级提供恒定电流。定时电容器与两个受压电流源的输入侧连接，并由来自电流源的恒定电流充电或放电。该振荡器还包括一对可变偏置产生装置，与相应的缓冲级相连，用于产生可变的偏置电压，每一个可变偏压产生装置根据对应的输出改变施加到相应的有源装置的偏置电压缓冲级，使得根据所述恒流源的恒定电流值适当地设置偏置电压，以便将所述有源器件的导通电阻设置为对应于恒定电流值的合适值。利用这种布置，无论恒定电流值如何，VCO的环路增益都是恒定的。

6. 发明授权

US4741595A Optical transmission device 失效
标题翻译：光传输装置
公开(公告)号：US4741595A
公开(公告)日：1988-05-03
申请号：US754928
申请日：1985-07-15
申请人： Seiichi Onoda , Yasumasa Koakutsu , Masaaki Kusano , Tamio Takeuchi , Syouji Yamada , Masao Yano , Ichiro Ikushima , Kiyohide Miyake , Toshiki P. Tanaka
发明人： Seiichi Onoda , Yasumasa Koakutsu , Masaaki Kusano , Tamio Takeuchi , Syouji Yamada , Masao Yano , Ichiro Ikushima , Kiyohide Miyake , Toshiki P. Tanaka
IPC分类号： G02B6/08 , G02B6/42
CPC分类号： G02B6/08 , G02B6/4204 , G02B6/4206 , G02B6/4249
摘要： In a device for coupling optically a light source with an optical transmission path, the present invention interposes an optical transmission path structure at the center of the distance between them in order to improve the optical coupling efficiency. The optical transmission path structure consists of a plurality of light transmitting elements arranged so that the light from the light source is received by the structure as incident light and is sent out therefrom as outgoing light at an outgoing angle which is equal to the angle of incidence. The light transmitting elements are arranged in parallel with the optical path of the light emitted from the light source and according to this arrangement, the system of the present device becomes equivalent to a system in which the positions of the light source are located at points of .+-.l.sub.1 from the light outgoing surface of the optical transmission path structure. When used with an optical fiber, the optical transmission path structure is disposed such that the distance from the light source to one end face of the optical transmission path structure is the same as the distance from the end face of the means for transmitting to the other end face of the optical transmission path structure.
摘要翻译：为了提高光耦合效率，在将光源与光传输路径光学连接的装置中，本发明将光传输路径结构设置在它们之间的距离的中心。光传输路径结构由多个透光元件组成，其布置成使得来自光源的光被该结构作为入射光被接收，并作为出射光从出射光发射出来，其出射角等于入射角。光传输元件与从光源发射的光的光路平行地布置，并且根据这种布置，本装置的系统变得等同于其中光源的位置位于 +/- l1从光传输路径结构的光出射表面。当与光纤一起使用时，光传输路径结构被设置为使得从光源到光传输路径结构的一个端面的距离与从传输装置的端面到另一端的距离相同光传输路径结构的端面。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式