Patent ID: 6774875
Filing Date: 2004-08-10
Classification: G09G

Abstract:
A method applicable in a plasma display panel for compensating luminance of a pixel signal row, said pixel signal row including a plurality of pixel signals and each of said pixel signal including a luminance value, said method comprising:reading said luminance values of said pixel signals for said pixel signal row; computing a load of said pixel signal row, said load is a count of said pixel signals comprising a luminance value being larger than or equal to a predetermined threshold luminance value; deciding a primary luminance compensation value of said pixel signal row according to said load of said pixel signal row; deciding a plurality of secondary luminance compensation values of said pixel signal row according to said primary luminance compensation value; performing luminance compensation subtracting a primary luminance compensation value from said luminance value of said pixel signal in the case of said luminance value being larger than or equal to a low threshold luminance value and by subtracting a secondary luminance compensation value from said luminance value of said pixel signal in the case of said luminance value being smaller than said low threshold luminance value; and outputting said pixel signal row.