公开(公告)号：US3660761A

公开(公告)日：1972-05-02

申请号：US3660761D

申请日：1970-01-29

Applicant: DATAMAX CORP

Inventor： HARMON SAMUEL T JR ,  MONROE KENNETH E ,  VENTURI GINO

IPC: H04L25/03 ,  H04L1/00 ,  H04B1/10

CPC classification number: H04L25/03019

Abstract: A system for equalizing the phase distortion of a data transmission channel is disclosed wherein the equalizer comprises a fixed delay network and a plurality of selectable delay networks. The fixed delay network exhibits an envelope delay similar to the difference between the characteristic envelope delay for the channel and a desired delay for the channel and the selectable delay networks may be connected therewith in any combination to produce the desired envelope delay. Control means are provided for successively connecting the selectable delay networks to form a successive plurality of test channels. The phase distortion produced by each channel is measured and compared with that produced by each other test channel. The control means includes means for reconnecting the combination of selectable delay networks which produce the smallest value of phase distortion to provide equalization of the channel for data transmission.

Abstract translation: 公开了一种用于均衡数据传输信道的相位失真的系统，其中均衡器包括固定延迟网络和多个可选延迟网络。 固定延迟网络呈现类似于信道的特征包络延迟与信道的期望延迟之间的差异的包络延迟，并且可选延迟网络可以以任何组合连接以产生期望的包络延迟。 提供控制装置用于连续地连接可选择的延迟网络以形成连续的多个测试通道。 测量每个通道产生的相位失真，并与每个测试通道产生的相位相比较。 控制装置包括用于重新连接产生最小相位失真值的可选延迟网络的组合以提供用于数据传输的信道的均衡的装置。