Patent ID: 7486258

Claim:
A method of driving a plasma display panel (PDP), the method comprising: providing the PDP comprising sustain electrode line pairs comprising X-electrode lines and Y-electrode lines arranged parallel to each other in an alternate manner, the PDP further comprising address electrode lines that cross the sustain electrode line pairs, thus forming cells at intersections therebetween; dividing each frame of input video data into a plurality of subfields, each having unique grayscale weights, respectively, to perform time division grayscale display, each of the subfields comprising a reset period, an address period, and a sustain period during which a predetermined number of sustain pulses are alternately applied to the Y-electrode lines and the X-electrode lines; and applying a predetermined number of sustain pulses to the sustain electrode line pairs during the sustain period in each subfield, wherein the applying of the predetermined number of sustain pulses comprises: calculating a number of sustain pulses for each subfield in a current frame from both a total number of sustain pulses in the entire current frame and unique grayscale weights allocated to the respective subfields in the current frame, thus obtaining a calculated sustain pulse numbers for each subfield, each calculated sustain pulse number comprising an integral part and a fractional part; adding to the calculated sustain pulse number in the subfield included in the current frame a fractional part of an adjusted sustain pulse number in a subfield having the same unique grayscale weight in a previous frame as the subfield in the current frame, thus obtaining an adjusted sustain pulse number in the subfield in the current frame, the adjusted sustain pulse number comprises an integral part and a fractional part; determining a number of sustain pulses to be applied to each of the Y-electrode lines and the X-electrode lines in the subfield in the current frame from the integral part of the adjusted sustain pulse number in the subfield in the current frame; and applying to said Y-electrode lines and said X-electrode lines in said subfield of said current frame said number of sustain pulses determined from the integral part of the adjusted sustain pulse number in the subfield of the current frame.