Patent ID: 8094115

Claim:
A circuit device for mitigating electromagnetic interference (EMI) for a display device, the circuit device comprising: a digital controller for generating a plurality of display signals and an interface timing signal; a phase-shift controlling unit for generating a control signal according to a predetermined phase shift amount; a phase adjusting unit coupled to the digital controller and the phase-shift controlling unit, for adjusting a phase of the interface timing signal according to the control signal to generate a plurality of interface adjusting signals, comprising: a receiving terminal for receiving the interface timing signal; a plurality of delay units, cascaded in a sequence and coupled to the receiving terminal for delaying the interface timing signal to generate a plurality of delay timing signals; and a selecting unit coupled to the receiving terminal and an output terminal of each delay unit, for selecting the plurality of interface adjusting signals from among the plurality of delay timing signals according to the control signal; and a transmitter coupled to the digital controller and the phase adjusting unit, for converting the plurality of display signals into a plurality of interface display signals and outputting the plurality of interface display signals according to the plurality of interface adjusting signals to stagger some output phases of the plurality of interface display signals.