Patent ID: 8373643

Claim:
A method comprising: generating a pulse width modulation (PWM) data signal, the PWM data signal comprising: a first sequence of PWM cycles having a first predetermined duty ratio, an initial PWM cycle of the first sequence being synchronized to a start of a display of a first frame of a video data at a display device, wherein the PWM data signal transitions from a first level to a second level during each PWM cycle; a first portion of the PWM data signal starting in the first frame following the first sequence of PWM cycles and terminating responsive to a start of display of a second frame of the video data at the display device, the second frame following the first frame, the first portion having a level matching the second level for the duration of the first portion, the duration of the first portion different than the duration of a PWM cycle of the first sequence of PWM cycles; and a second sequence of PWM cycles, an initial PWM cycle of the second sequence being synchronized to the start of the second frame; and providing the PWM data signal to a light emitting diode (LED) driver for control of one or more LEDs of the display device.