公开(公告)号：US06426646B2

公开(公告)日：2002-07-30

申请号：US09851079

申请日：2001-05-09

申请人： Munetoshi Yoshizawa ,  Masashi Tachigori

发明人： Munetoshi Yoshizawa ,  Masashi Tachigori

IPC分类号： H03K19003

CPC分类号： H04L25/0278 ,  H03K19/01831 ,  H04L25/028

摘要： An ECL terminating circuit, in which it is prevented that the amplitude of an output signal from an ECL outputting circuit or a PECL outputting circuit is lowered caused by that the supply voltage for the circuit has been lowered, and also it is prevented that the waveform of the output signal is deteriorated caused by that the distance of a transmission line where the output signal being high speed is transmitted is made to be long, is provided. The ECL terminating circuit consists of a PECL outputting circuit, a resistor, a transmission line, a load circuit, and a terminal element. And the terminal element is connected to the resistor in series and the resistance value of the terminal element is about 0 &OHgr; at a direct current (DC), but is made to be large at an alternating current (AC).

摘要翻译： 一种ECL终端电路，由于电路的电源电压已经降低，防止来自ECL输出电路或PECL输出电路的输出信号的幅度降低，从而防止了波形 由于传输输出信号为高速度的传输线的距离变长，导致输出信号的长度劣化。 ECL终端电路由PECL输出电路，电阻器，传输线，负载电路和端子元件组成。 并且端子元件串联连接到电阻器，并且在直流（DC）下端子元件的电阻值约为0欧姆，但是​​在交流电（AC）下变大。

公开(公告)号：US06043919A

公开(公告)日：2000-03-28

申请号：US18302

申请日：1998-02-03

申请人： Munetoshi Yoshizawa

发明人： Munetoshi Yoshizawa

IPC分类号： H04B3/10 ,  H04B10/07 ,  H04B10/27 ,  H04B10/29 ,  H04B10/294 ,  H04B10/299 ,  H04B10/02

CPC分类号： H04B10/29 ,  H04B10/291

摘要： The object of the present invention is to reduce the man-hours for correction of the frequency characteristic of an optical network thereby to augment the productivity. A frequency characteristic correction system for an optical network includes a plurality of optical repeaters connected in analog repeating connection to each other for transmitting an analog signal, each of which includes frequency characteristic measurement means for measuring a frequency characteristic based on a testing sine wave inputted by repeating, frequency characteristic discrimination means for comparing the frequency characteristic measured by the frequency characteristic measurement means with a reference value set in advance to discriminate whether or not the frequency Characteristic is near the reference value and generating a control signal for flattening the frequency characteristic, and frequency characteristic equalization means for flattening the frequency characteristic of the testing sine wave in response to the control signal generated by the frequency characteristic discrimination means, and correction of the frequency characteristic is performed in the entire network.

摘要翻译： 本发明的目的是减少用于校正光网络的频率特性的工作时间，从而提高生产率。 一种用于光网络的频率特性校正系统包括：多个模拟重复连接的光中继器，用于传输模拟信号，每个模拟信号包括频率特性测量装置，用于根据由 重复频率特性鉴别装置，用于将由频率特性测量装置测量的频率特性与预先设置的参考值进行比较，以鉴别频率特性是否接近参考值，并产生用于使频率特性变平的控制信号;以及 频率特性均衡装置，用于根据由频率特性鉴别装置产生的控制信号来平坦化测试正弦波的频率特性，并且在整个n中执行频率特性的校正 工作。

公开(公告)号：US20090154511A1

公开(公告)日：2009-06-18

申请号：US12332632

申请日：2008-12-11

申请人： Munetoshi Yoshizawa

发明人： Munetoshi Yoshizawa

IPC分类号： H01S3/13

CPC分类号： H01S5/06832 ,  H01S5/06804

摘要： A Light receiver generates a monitoring voltage according to an optical output of an LD element. The control circuit obtains a set value according to the ambient temperature around the LD element, and controls the optical output of the LD element on the basis of the comparing the result between the set value and the monitoring voltage. An adjustment section corrects the monitoring voltage on the basis of the set value and outputs the corrected monitoring voltage.

摘要翻译： 光接收器根据LD元件的光输出产生监视电压。 控制电路根据LD元件周围的环境温度获得设定值，并根据比较设定值和监视电压之间的结果来控制LD元件的光输出。 调整部根据设定值校正监视电压，输出校正后的监视电压。