SYSTEM AND METHOD FOR COMPENSATING LINE LOSSES OVER A DIGITAL VISUAL INTERFACE (DVI) LINK

摘要

A digital communication system for transmitting and receiving Digital Visual Interface (DVI) communication data signals and Display Data Channel (DDC) communication signals over a transmission line (32) comprises an open-loop equalizer circuit (70) and a DDC extender circuit (30). The open-loop equalizer circuit (70) is operable to receive DVI communication signals transmitted over the transmission line (32) and output equalized DVI communication data signals. The DDC extension circuit (30) is operable to inject a boost current at the receive end of the transmission line (32) during a positive transition in the DDC communication signal, and clamp the receive end of the transmission line (32) during a negative transition of the DDC communication signal.