Patent ID: 8174545

Claim:
A method of ameliorating image artifacts in a display system, the method comprising the steps of: providing a set of multiple-bit bit patterns to represent each allowed image intensity word; receiving a series of input pixel intensity values; converting each said pixel intensity value to at least one of said multiple-bit bit patterns; converting selected ones of said pixel intensity values to at least two different of said multiple-bit bit patterns; wherein a first bit pattern for a given pixel intensity value in said at least two different of said multiple-bit bit patterns comprises a first plurality of bits, wherein a value of each bit of said first plurality of bits is for indicating a respective active bit period for displaying light for a respective bit period duration and said respective bit period duration differs in duration from any other bit period duration corresponding to any other bit of said first plurality of bits; wherein a second bit pattern for said given pixel intensity value in said at least two different of said multiple-bit bit patterns comprises a second plurality of bits, wherein a value of each bit of said second plurality of bits is for indicating a respective active bit period for displaying light for a respective bit period duration and said respective bit period duration differs in duration from any other bit period duration corresponding to any other bit of said second plurality of bits; and wherein at least one respective bit period duration corresponding to said first bit pattern differs from all respective bit period durations corresponding to said second bit pattern; and displaying light in response to selected ones of said multiple-bit bit patterns, comprising: displaying light for said respective bit periods of said first bit pattern for said given pixel intensity value; and displaying light for said respective bit periods of said second bit pattern for said given pixel intensity value.