Patent ID: 8242803

Claim:
A dual mode transmitter configurable to operate in one of a High-Definition Multimedia Interface (HDMI) mode of operation and a DisplayPort mode of operation, comprising: a first selectable impedance network configured to select a first impedance from among a first plurality of impedances in the HDMI mode of operation and a second impedance from among the first plurality of impedances in the DisplayPort mode of operation; a second selectable impedance network configured to select a first impedance from among a second plurality of impedances in the HDMI mode of operation and a second impedance from among the second plurality of impedances in the DisplayPort mode of operation; and a source current generator configured to receive a bias current from the first selectable impedance network in the DisplayPort mode of operation or from the second selectable impedance network in the HDMI mode of operation, the bias current being used to transmit audio and video information according to a HDMI interface standard in the HDMI mode of operation and to transmit the audio and video information according to a DisplayPort interface standard in the DisplayPort mode of operation.