DATA COMMUNICATION SYSTEM HAVING CHANNEL SWITCHING MEANS

摘要

A data transmission system comprising a transmit unit (2) having a buffer (22) for generating a delayed version of the transmitted data signal and the receive unit (4) comprising a buffer (47) for generating a delayed version of the received data signal error detection means for detecting errors in the received data signal and means for signalling the transmit unit (2) to transmit the delayed version of the transmitted data signal. The transmit unit (2) includes means for multiplexing data with control data and sending the multiplexed signals via at least two transmission lines.