System and method for processing digital visual interface communication data signals and display data channel communication signals over a transmission line
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United States of America Patent
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Jun 12, 2007
Grant Date -
Oct 16, 2003
app pub date -
Mar 14, 2003
filing date -
Mar 15, 2002
priority date (Note) -
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Abstract
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 comprises an open-loop equalizer circuit and a DDC extension circuit. The open-loop equalizer circuit is operable to receive DVI communication signals transmitted over the transmission line and output equalized DVI communication data signals. The DDC extension circuit is operable to inject a boost current at the receive end of the transmission line during a positive transition in the DDC communication signal, and clamp the receive end of the transmission line during a negative transition of the DDC communication signal.
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