US Patent 7321946 Link extender having equalization circuitry

An apparatus comprises a first plug to couple the apparatus to a host connection and a second plug to couple the apparatus to a display connection. The apparatus further comprises a metallic transmission medium coupled to the first plug and link extender circuitry coupled to the metallic transmission medium and the second plug. The link extender circuitry including equalization circuitry coupled to the metallic transmission medium to restore voltage levels on signals transmitted on the metallic transmission medium, differential signaling receive circuitry coupled to the equalization circuitry; and differential signaling transmit circuitry coupled to the differential signaling receive circuitry and the second plug.