a circuit and method for generating pulse width modulated signal from an analog video signal . the circuit includes a first circuit portion that includes a first switch , a voltage storage device that stores a portion of the analog video signal as a voltage value according to the first switch activated according to sample time information within a portion of time of the analog video signal , and a second switch that outputs the stored voltage value when activated according to a next portion of time of the analog video signal . the circuit also includes a second circuit portion that converts the outputted voltage value into a pulse width modulated signal .