公开(公告)号：EP0874460B1

公开(公告)日：2002-03-06

申请号：EP98107401.6

申请日：1998-04-23

申请人： NEC CORPORATION

发明人： Nagahori, Takeshi ,  Hatakeyama, Ichiro ,  Miyoshi, Kazunori

IPC分类号： H03K5/08

CPC分类号： H03K5/082 ,  H04B10/695

公开(公告)号：EP0736967A2

公开(公告)日：1996-10-09

申请号：EP96302434.4

申请日：1996-04-04

申请人： NEC CORPORATION

发明人： Nagahori, Takeshi ,  Araki, Soichiro ,  Hatakeyama, Ichiro ,  Miyoshi, Kazunori

IPC分类号： H03F3/08

CPC分类号： H03F3/08 ,  H03F3/3432

摘要： In a preamplifier for amplifying an input signal supplied to an input terminal to supply an amplified output signal and a reference output signal to an output terminal and a reference output terminal, respectively, a reference level circuit produces a reference level. An amplifier is connected to the reference level circuit and has a predetermined structure. The amplifier amplifies the input signal into the amplified output signal with reference to the reference level to supply the amplified output signal to the output terminal. A dummy circuit is connected to the reference level circuit and has a structure which is identical with the predetermined structure. The dummy circuit responds to the reference level to produce the reference output signal related to the amplified output signal.

摘要翻译： 在用于放大提供给输入端子的输入信号的前置放大器中，分别向输出端子和参考输出端子提供放大的输出信号和参考输出信号，参考电平电路产生参考电平。 放大器连接到参考电平电路并具有预定的结构。 放大器将参考电平将输入信号放大到放大的输出信号，以将放大的输出信号提供给输出端。 虚设电路连接到基准电平电路，具有与预定结构相同的结构。 虚拟电路响应于参考电平以产生与放大的输出信号相关的参考输出信号。

公开(公告)号：EP0874460A3

公开(公告)日：1999-10-20

申请号：EP98107401.6

申请日：1998-04-23

申请人： NEC CORPORATION

发明人： Nagahori, Takeshi ,  Hatakeyama, Ichiro ,  Miyoshi, Kazunori

IPC分类号： H03K5/08 ,  H04B10/00

CPC分类号： H03K5/082 ,  H04B10/695

摘要： In an optical receiver, a photodiode converts an optical digital input signal to an electrical signal which is fed into a differential amplifier to produce a pair of true and complementary output signals. The true output signal is received by a peak detector and the output of this peak detector is summed in a first adder with the complementary output of the differential amplifier. The true output of the amplifier is summed in a second adder with a predetermined constant voltage. Difference between the output signals of the first and second adders is detected and compared with a decision threshold to produce an output signal at one of two logical levels depending on whether the difference is higher or lower than the decision threshold. Preferably, a second peak detector having a substantially similar operating characteristic to that of the first peak detector is connected between the source of the predetermined constant voltage and the second adder.

公开(公告)号：EP0874460A2

公开(公告)日：1998-10-28

申请号：EP98107401.6

申请日：1998-04-23

申请人： NEC CORPORATION

发明人： Nagahori, Takeshi ,  Hatakeyama, Ichiro ,  Miyoshi, Kazunori

IPC分类号： H03K5/08 ,  H04B10/00

CPC分类号： H03K5/082 ,  H04B10/695

摘要： In an optical receiver, a photodiode converts an optical digital input signal to an electrical signal which is fed into a differential amplifier to produce a pair of true and complementary output signals. The true output signal is received by a peak detector and the output of this peak detector is summed in a first adder with the complementary output of the differential amplifier. The true output of the amplifier is summed in a second adder with a predetermined constant voltage. Difference between the output signals of the first and second adders is detected and compared with a decision threshold to produce an output signal at one of two logical levels depending on whether the difference is higher or lower than the decision threshold. Preferably, a second peak detector having a substantially similar operating characteristic to that of the first peak detector is connected between the source of the predetermined constant voltage and the second adder.

摘要翻译： 在光接收器中，光电二极管将光数字输入信号转换为馈送到差分放大器中的电信号，以产生一对真和互补的输出信号。 真正的输出信号由峰值检测器接收，该峰值检测器的输出与差分放大器的互补输出的第一加法器相加。 放大器的真实输出在具有预定恒定电压的第二加法器中相加。 检测第一和第二加法器的输出信号之间的差异，并将其与判定阈值进行比较，以根据该差异是高于还是低于判定阈值来产生两个逻辑电平之一的输出信号。 优选地，具有与第一峰值检测器相似的工作特性的第二峰值检测器连接在预定恒定电压源和第二加法器之间。

公开(公告)号：EP0736967A3

公开(公告)日：1997-10-01

申请号：EP96302434.4

申请日：1996-04-04

申请人： NEC CORPORATION

发明人： Nagahori, Takeshi ,  Araki, Soichiro ,  Hatakeyama, Ichiro ,  Miyoshi, Kazunori

IPC分类号： H03F3/08

CPC分类号： H03F3/08 ,  H03F3/3432

摘要： In a preamplifier for amplifying an input signal supplied to an input terminal to supply an amplified output signal and a reference output signal to an output terminal and a reference output terminal, respectively, a reference level circuit produces a reference level. An amplifier is connected to the reference level circuit and has a predetermined structure. The amplifier amplifies the input signal into the amplified output signal with reference to the reference level to supply the amplified output signal to the output terminal. A dummy circuit is connected to the reference level circuit and has a structure which is identical with the predetermined structure. The dummy circuit responds to the reference level to produce the reference output signal related to the amplified output signal.