Noise reduction method for pulse width controlled image display device provides selective modification of multi-bit word corresponding to each image point dependent on brightness comparison

摘要

The noise reduction method compares the brightness of an image point to be represented with a given brightness threshold value, for replacing the lowest value bits (B1,B0) of the multi-bit word corresponding to the image point by bits (B1',B0') obtained from a stored table, when the brightness value is below the brightness threshold value. An Independent claim for a noise reduction device for a pulse width controlled image display device is also included.