systems for displaying images are provided . a representative system incorporates a digital data sampling circuit with n stage data inputs . the first stage flip - flop outputs a first output signal . the second stage flip - flop outputs a second output signal . the first stage sample latch circuit receives digital data according to a first control signal . the first stage logic circuit comprises a first converter for inverting the second output signal and generating a first inverse logic signal , and generates the first control signal according to the first output signal and the first inverse logic signal .