公开(公告)号：US3573667A

公开(公告)日：1971-04-06

申请号：US3573667D

申请日：1969-10-08

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAO CHIH-YU ,  KURTH CARL F

IPC: H03H7/01 ,  H04B3/14 ,  H03H7/16

CPC classification number: H04B3/141

Abstract: An equalizer of a coaxial transmission system is automatically adjusted by applying a sweep signal to the equalizer and comparing the output of the equalizer with a predetermined reference signal to develop an error signal. The output signal of the equalizer is simultaneously converted into a plurality of weighting signals, each representing the energy content of the output signal within a passband which includes one equalizer transmission network characteristic, i.e., ''''bump.'''' Each weighting signal is multiplied by the error signal and integrated to develop a control signal for the associated equalizer transmission network.

公开(公告)号：US3633129A

公开(公告)日：1972-01-04

申请号：US3633129D

申请日：1970-10-12

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAO CHIH-YU ,  KURTH CARL FERDINAND ,  MACLEAN RODERICK CAMPBELL

IPC: H04B3/14 ,  H04B3/04

CPC classification number: H04B3/141

Abstract: An equalizer of a coaxial transmission system is automatically adjusted by applying a sweep signal to the equalizer and comparing the output of the equalizer with a predetermined reference signal to develop an error signal. The output signal of the equalizer is simultaneously converted into a train of pulses and applied to a frequency selector which generates signals upon the occurrence of predetermined frequencies in the equalizer output signal. In response to these generated signals, predetermined intervals of the error signal are integrated, converted to digital signals, and applied to the proper ''''memory'''' of the equalizer.

Abstract translation: 通过向均衡器施加扫描信号并且将均衡器的输出与预定的参考信号进行比较以产生误差信号来自动调整同轴传输系统的均衡器。 均衡器的输出信号同时转换为脉冲序列，并施加到在均衡器输出信号中发生预定频率时产生信号的频率选择器。 响应于这些产生的信号，误差信号的预定间隔被积分，转换成数字信号，并被施加到均衡器的适当的“存储器”。

公开(公告)号：US3663898A

公开(公告)日：1972-05-16

申请号：US3663898D

申请日：1969-12-17

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAO CHIH-YU ,  KURTH CARL F

IPC: H04B3/14

CPC classification number: H04B3/141

Abstract: A multibump equalizer having a main path which comprises an amplifier and a summing network and a plurality of feedback paths each including an individual amplifier and shaping network connected from the output of the equalizer to individual inputs to the summing network. All amplifiers and the summing network can be realized with a single operational amplifier.

Abstract translation: 一种具有主路径的多路径均衡器，其包括放大器和求和网络以及多个反馈路径，每个反馈路径包括从均衡器的输出连接到各个输入到求和网络的单独放大器和整形网络。 所有放大器和求和网络都可以通过单个运算放大器实现。

公开(公告)号：US3624539A

公开(公告)日：1971-11-30

申请号：US3624539D

申请日：1969-12-17

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAO CHIH-YU ,  KURTH CARL F

IPC: H03F1/33 ,  H03H11/12 ,  H04B3/14 ,  H03F3/68

CPC classification number: H03H11/1217 ,  H03F1/33 ,  H04B3/141

Abstract: A multibump equalizer wherein a plurality of shaping networks are serially connected between a first summing network-amplifier combination and individual inputs to a second summing networkamplifier combination. A frequency independent feedforward path connects the input to the equalizer, which is also connected to an individual input of the first summing network, to an individual input on the second summing network. A frequency independent feedback path connects the output of the equalizer, which is also connected to the output of the first amplifier, to an individual input of the first summing network.