Patent ID: 6215468
Filing Date: 2001-04-10
Classification: H04N

Abstract:
A circuit for converting an 8-bit input video signal into a 10-bit gamma corrected output video signal, said circuit comprising:input means for receiving the 8-bit input video signal;means for gamma correcting and converting the 8-bit input video signal into a 10-bit gamma corrected video signal; andoutput means for supplying the 10-bit gamma corrected video signal,wherein said gamma correcting and converting means comprises:8-bit look-up table means containing 8-bit gamma table values in accordance with the equationV.sub.OUT (i)=V.sub.IN (i).sup..gamma., for i=0 to 255,where V.sub.OUT is a 8-bit gamma corrected video signal, V.sub.IN is the 8-bit input video signal, and .gamma. is gamma; andmeans for linearly converting the 8-bit gamma corrected video signal into said 10-bit gamma corrected video signal.