Patent ID: 7800637
Filing Date: 2010-09-21
Classification: G09G

Abstract:
1. An overdrive gray level data modifier, obtaining an overdrive gray level data according to M*N overdrive gray values OD(1,1)-OD(M,N) corresponding to M previous gray level compared values PF(1)-PF(M) and N current gra3; level compared values CF(1)-CF(N), the overdrive gray level data modifier comprising: a first memory unit; and a second memory unit; wherein the M previous gray level compared values PF(1)-PF(M) comprise a previous gray level compared value PF(i) and a previous gray level compared value PF(i+l), and the N current gray level compared values CF(1)-CF(N) comprise a current gray level compared value CF(j) and a current gray level compared value CF(j+l), i is smaller than M, j is smaller than N, i, j, M and N are positive integers; wherein the overdrive gray values OD(i, 1)-OD(i,N) corresponding to the previous graY level compared value PF(i) are stored in the first memory unit; wherein the overdrive gray values OD(i+l,1)-OD(i+l,N) corresponding to the previous gray level compared value PF(i+l) are stored in the second memory unit; wherein the overdrive gray level data modifier receives a current flame gray level data and a previous frame gray level data and looks up the overdrive gray values OD(1,1)-OD(M,N) stored in the first memory unit and the second memory unit to obtain the overdrive gray level data according to the current frame gray level data and the previous frame gray level data.