公开(公告)号：US06876696B1

公开(公告)日：2005-04-05

申请号：US09668856

申请日：2000-09-25

申请人： Richard L. Goodson ,  Steven R. Blackwell ,  Ayman Ghobrial ,  Cynthia Lin

发明人： Richard L. Goodson ,  Steven R. Blackwell ,  Ayman Ghobrial ,  Cynthia Lin

IPC分类号： H04B1/38 ,  H04L5/14 ,  H04L7/10 ,  H04L25/03

CPC分类号： H04L5/1438 ,  H04L7/0054 ,  H04L7/10 ,  H04L25/03006 ,  H04L2025/03783

摘要： A method of training and operating a dual-duplex, four-wire communications system to provide for time alignment in the receivers of data that is time aligned in the transmitters, even in the presence of a differential transmission delay in the wire pairs. In a training mode, a known sequence of training data is concurrently sent across each wire pair such that equalizers in the receivers are forced to train together. After the equalizers have been trained to eliminate the differential delay, the system is switched to a data mode.

摘要翻译： 一种训练和操作双工四线通信系统的方法，即使在线对中存在差分传输延迟的情况下，也可以在发射机中时间对准的数据的接收机中提供时间对准。 在训练模式中，训练数据的已知序列同时被发送到每个线对上，使得接收机中的均衡器被迫一起训练。 在均衡器被训练以消除差分延迟之后，系统被切换到数据模式。

公开(公告)号：US06975676B1

公开(公告)日：2005-12-13

申请号：US09670047

申请日：2000-09-25

申请人： Richard L. Goodson ,  Steven R. Blackwell ,  Ayman Ghobrial ,  Cynthia Lin

发明人： Richard L. Goodson ,  Steven R. Blackwell ,  Ayman Ghobrial ,  Cynthia Lin

IPC分类号： H04B1/10 ,  H04L7/02

CPC分类号： H04L7/0054 ,  H04L7/0025

摘要： A timing loop is used in a data communications receiver to time lock the receiver to a transmitter sending data across a communications loop, where the receiver includes a linear equalizer for correcting signal distortion associated with the communications loop. The timing loop includes a timing equalizer filter functionally positioned to provide an equalized signal to the phase detector portion of the timing loop. After the linear equalizer trains, the equalizer coefficients are copied to the timing equalizer.

摘要翻译： 在数据通信接收机中使用定时环来将接收机时间锁定到通过通信环路发送数据的发射机，其中接收机包括用于校正与通信环路相关联的信号失真的线性均衡器。 定时环包括定时均衡器滤波器，其功能地定位成向定时环路的相位检测器部分提供均衡的信号。 在线性均衡器列之后，均衡器系数被复制到定时均衡器。