Patent ID: 7075243

Claim:
A driving apparatus for a plasma display panel that divides respective fields of an image displayed on the plasma display panel according to an input image signal into a plurality of subfields and displays the image corresponding to the image signal by expressing gray levels according to a combination of the subfields, the driving apparatus comprising: a sustain pulse number determining portion that determines a sustain pulse number based on an average signal level of data in one frame of the input image signal; an inverse gamma corrector that performs inverse gamma correction of the input image signal so that an inverse gamma correction gray level corresponding to the number of sustain pulses applied to the plasma display panel is expressed, by using a plurality of gamma correction tables corresponding to the sustain pulse number determined by the sustain pulse number determining portion; a sustain pulse subfield converter that converts the subfield into the subfield depending on the sustain pulse number corresponding to the data output from the inverse gamma corrector by making the sustain pulse number in the respective subfields different from each other according to the sustain pulse number determined by the sustain pulse number determining portion; and a sustain/scan driver that generates control signals based on arrangement of the subfield converted by the sustain pulse subfield converter and applies the control signals to the plasma display panel.