公开(公告)号：US07248635B1

公开(公告)日：2007-07-24

申请号：US09620373

申请日：2000-07-20

申请人： Michael R. Arneson ,  Terrance L. Bowman ,  Frank N. Cornett ,  John F. DeRyckere ,  Brian T. Hillert ,  Philip N. Jenkins ,  Nan Ma ,  Joseph M. Placek ,  Rodney Ruesch ,  Gregory M. Thorson

发明人： Michael R. Arneson ,  Terrance L. Bowman ,  Frank N. Cornett ,  John F. DeRyckere ,  Brian T. Hillert ,  Philip N. Jenkins ,  Nan Ma ,  Joseph M. Placek ,  Rodney Ruesch ,  Gregory M. Thorson

IPC分类号： H04B3/00 ,  H03H7/38

CPC分类号： H04L25/03878 ,  H04L25/0278 ,  H04L25/028 ,  H04L25/0292

摘要： The present invention is directed toward a communications channel comprising a link level protocol, a driver, a receiver, and a canceller/equalizer. The link level protocol provides logic for DC-free signal encoding and recovery as well as supporting many features including CRC error detection and message resend to accommodate infrequent bit errors across the medium. The canceller/equalizer provides equalization for destabilized data signals and also provides simultaneous bi-directional data transfer. The receiver provides bit deskewing by removing synchronization error, or skewing, between data signals. The driver provides impedance controlling by monitoring the characteristics of the communications medium, like voltage or temperature, and providing a matching output impedance in the signal driver so that fewer distortions occur while the data travels across the communications medium.

摘要翻译： 本发明涉及包括链路级协议，驱动器，接收机和消除器/均衡器的通信信道。 链路级协议提供了无DC信号编码和恢复的逻辑，并支持许多功能，包括CRC错误检测和消息重发，以适应介质上不常见的位错误。 消除器/均衡器为不稳定的数据信号提供均衡，并且还提供同时的双向数据传输。 接收器通过消除数据信号之间的同步错误或倾斜来提供位去偏移。 驱动器通过监视通信介质的特性（如电压或温度）以及在信号驱动器中提供匹配的输出阻抗来提供阻抗控制，以便在数据传播通过通信介质时发生较少的失真。