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AssigneeGennum Corporation
InventorsAapoolcoyuz Biman, John Hudson, Eliyahu D. Zamir, Stephen P. Webster
Estimating the term…
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.
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, the system comprising:
A digital communication system for processing Digital Visual Interface (DVI) communication data signals and Display Data Channel (DDC) communication signals over a transmission line, the system comprising:
A method for transmitting and receiving Digital Visual Interface (DVI) communication data signals and Display Data Channel (DDC) communication signals over a transmission line, comprising:
A system for transmitting and receiving Digital Visual Interface (DVI) communication data signals and Display Data Channel (DDC) communication signals over a transmission line, comprising:
Dependencies are inferred from the claim text.
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Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto: details of…
With semiconductor devices only: tuned amplifiers
Using MOSFET transistors as the active amplifying circuit: pl types
Shaping networks in transmitter or receiver, e.g. adaptive shaping networks: line equalisers; line build-out devices
Term end not estimated
1. Technical Field
This application generally relates to digital communication systems and methods, and particularly relates to Digital Visual Interface (DVI) communications.
2. Description of the Related Art
FIG. 1 is a block diagram of a DVI communication system;
FIG. 2 is a block diagram of a digital communication system comprising equalizers and a DDC extender circuit;
FIG. 3 is a block diagram of an equalizer configured to equalize data signals received at a receive end of a transmission line;
FIG. 1 is a block diagram of a DVI communication system 1, which includes a graphics controller 10, a DDC controller 12, a transmitter 14, a receiver 16, and a display controller 18. A DVI data line typically comprises three data channels, shown as Data Channels 0, 1 and 2, and a clock.
The graphics controller 10 is operable to encode 8 bits of video data into a 10-bit TMDS DC balanced character on each data channel. The graphics controller 10 may be one of many DVI-compliant graphics controllers. The transmitter 14 and receiver 16 are operable to transmit and receive the 10-bit TMDS DC balanced characters over a transmission line. The display controller 18 is operable to decode the 10-bit character back into the 8 bits of video data for each data channel. The display controller 18 may be one of many DVI-compliant display controllers.
The DDC controller 12 is operable to transmit DDC data and receive DDC data over the transmission line. Unlike the DVI data, the DDC data is not DC balanced. The DDC data link typically comprises a clock channel and a digital data channel.