COLLISION DETECTION ARRANGEMENT FOR DAISY CHAIN CONFIGURATIONS

摘要

COLLISION DETECTION ARRANGEMENT FOR DAISY CHAIN CONFIGURATIONS Local area networks having a plurality of stations connected to a transmission medium in a daisy chain configuration at the nodes or endpoints experience difficulty in detecting collisions between transmitted signals from two or more stations using standard Manchester violation or lost carrier collision detection techniques. The present invention eliminates collision detection problems in this environment almost entirely by monitoring the signal level coupled from the transmission medium to each station of the daisy chain to detect the presense or absence of collisions and generating a collision detection output signal when the signal level being monitored exceeds a predetermined threshold level.