Patent ID: 6487308
Filing Date: 2002-11-26
Classification: G09G,H04N

Abstract:
A method for converting digital pixel data from an input YUV format to an RGB format via the following the equations: R1=(VR)V; G1=(G0u)U+(G0v)V; and B1=(UB)U, and R=Y+R1, G=Y+G1, and B=Y+B1, the method comprising the steps of:calculating the values from the above equations, wherein said calculation results in integer values for four corresponding tables, R1, G0u, G0v, and B1; limiting each and every value of the R1, G0u, G0v, B1 and Y values to a predetermined number of bits; combing the R1 and G0v to form a V table; combining the B1 and G0u to form a U table; and replicating the Y value three times in a table, wherein when addressed the three values are fetched in parallel, determining if the UV signal is signed, if unsigned; converting each unsigned U and V value to a signed value; addressing the U and V tables with the signed UV inputs and addressing the Y table with the Y input, and combining the outputs of the U and V tables and then combining the result with the outputs of the Y table as defined in the above equations to form the RGB format.