Patent ID: 8582667
Filing Date: 2013-11-12
Classification: G09G,H04L,H04N

Abstract:
1. A transmitter of a transition minimized differential signaling (TMDS) system, the transmitter comprising: a current source; a pair of switches configured to be connected to the current source and switch a current of the current source; and a monitoring unit configured to monitor a potential of a connection node between the current source and the pair of switches, wherein the pair of switches is connected to a receiver of the TMDS system through a first line and a second line, respectively, and the monitoring unit monitors a potential of the connection node based on a power supply voltage of the receiver and a current through one or both of the pair of switches, wherein the monitoring unit determines: whether the potential is in a first range when the receiver of the TMDS system is in a first power state, the potential in the first range based on the power supply voltage and a voltage drop across one or both of the pair of switches, and whether the potential is in a second range different from the first range when the receiver of the TMDS system is in a second power state different from the first power state.