公开(公告)号：US5596575A

公开(公告)日：1997-01-21

申请号：US435923

申请日：1995-05-05

申请人： Henry S. Yang ,  Donald L. Post ,  Wen-Yi Huang

发明人： Henry S. Yang ,  Donald L. Post ,  Wen-Yi Huang

IPC分类号： H04L12/44 ,  H04L29/06 ,  H04J3/22

CPC分类号： H04L12/44 ,  H04L29/06 ,  H04L69/18 ,  H04L69/24

摘要： A network adapter for interfacing between a communication network and a host computer operating as a network device, and a method of operation of these components. The adapter is initially conditioned to transmit at a lower of two possible speeds, such as 10 Mbps instead of 100 Mbps, and then senses at which speed the network is operating, before matching to this sensed speed, either the higher speed or the lower speed. If the sensed speed is the lower speed, the adapter transmits a burst of high-speed signals and senses again for high-speed operation. If the network has not switched to high-speed operation, the adapter is conditioned for low-speed operation. After the adapter is conditioned for low-speed or high-speed operation, the network speed is continually sensed and, if the network is not operating at the selected speed for some preselected period of time, the adapter is returned to its initial low-speed state to begin network speed sensing over again.

摘要翻译： 用于在通信网络和作为网络设备操作的主机之间进行接口的网络适配器，以及这些组件的操作方法。 适配器最初被调节为以两个可能的速度（例如10Mbps而不是100Mbps）的较低速度进行传输，然后在匹配到该感测速度之前感测网络正在运行的速度，即更高速度或更低速度 。 如果感测到的速度是较低的速度，则适配器传输一连串的高速信号并再次感测高速操作。 如果网络没有切换到高速操作，则适配器处于低速运行状态。 在将适配器调节为低速或高速运行后，网络速度将不断被检测到，如果网络在预选的时间段内没有以选定的速度运行，则适配器返回初始低速 状态再次开始网速检测。