Patent ID: 8259057

Claim:
A liquid crystal display assembly, comprising: a liquid crystal module; a backlight assembly comprising an array of light emitting diodes; a detector to detect an optical output of at least one light emitting diode; and a controller coupled to the detector; wherein the controller comprises logic to: record in a memory location a first output value from the detector at a first point in time for a plurality of light emitting diodes in the array of light emitting diodes; measure a second output value from the detector at a second point in time for the plurality of light emitting diodes in the array of light emitting diodes; determine a difference between the first output value from the detector at the first point in time and the second output value from the detector at the second point in time for the plurality of light emitting diodes in the array of light emitting diodes respectively; and if the determined difference exceeds a threshold, adjust at least one input value to at east one light emitting diode of the plurality of light emitting diodes in the array of light emitting diodes based on a ratio of the first output value and the second output value.