Patent ID: 8194003

Claim:
A driving method of a plasma display device having a plurality of row electrodes, a plurality of column electrodes, and a plurality of discharge cells defined by the plurality of row electrodes and the plurality of column electrodes, the plasma display device being driven during frames of time, the driving method comprising: dividing each of the frames of time into a plurality of subfields each having a sustain period with a corresponding fixed sustain period length and initial luminance weight, the sustain period length corresponding to the initial luminance weight; determining, for each of the plurality of subfields, a first line load ratio from a plurality of video signals corresponding to a first row electrode among the plurality of row electrodes, the first row electrode having a plurality of first row discharge cells among the plurality of discharge cells, the first line load ratio corresponding to a number of the first row discharge cells that are to emit light among a total number of the first row discharge cells; setting, for each of the plurality of subfields, a first output estimation weight according to the first line load ratio, the first output estimation weight being an updated luminance weight; converting the plurality of video signals corresponding to the first row electrode into a plurality of first subfield data according to the first output estimation weight set for each of the plurality of subfields, each of the plurality of first subfield data for indicating which of the first row discharge cells are to emit light during a corresponding one of the plurality of subfields; applying driving control signals to the first row electrode and the plurality of column electrodes according to the plurality of first subfield data and the sustain period length of each of the plurality of subfields; calculating a screen load ratio from the plurality of video signals corresponding to one of the frames of time; and generating at least one model adapted to predict variation of output luminance as a function of variation of line load ratio, wherein for each of the plurality of subfields, the setting of the first output estimation weight comprises calculating the first output estimation weight from the corresponding initial luminance weight and the first line load ratio according to the at least one model.