Patent ID: 8878590
Filing Date: 2014-11-04
Classification: H03K

Abstract:
1. A circuit for switching between an AC-coupled connectivity and a DC-coupled connectivity of a multimedia interface, comprising: a first current source connected in series to a first wire of the multimedia interface and a first tap of a first coupling capacitor; a first termination resistor connected to the first current source and to the first tap of the first coupling capacitor, wherein the circuit is connected between a source line driver and a sink line receiver of the multimedia interface, the sink line receiver supporting either the AC-coupled connectivity or the DC-coupled connectivity; and a controller configured to set the first current source to an off-state to support the AC-coupled connectivity to the sink line receiver and to set the first current source to an on-state to support the DC-coupled connectivity to the sink line receiver, in the sink line receiver being connected to the first tap of the first coupling capacitor and the source line driver being connected to a second tap of the first coupling capacitor.