Patent ID: 7439941

Claim:
A displaying method of a plasma display apparatus carrying out color display using a plurality of primary colors, the method comprising: varying a gray level of a video signal input at a predetermined gray level by multiplying respective coefficients, when a total number of sustain pulses in a frame is a first pulse number and when the total number of sustain pulses is a second pulse number different from the first pulse number; and carrying out the color display by making a first variance ratio of the coefficient differ from a second variance ratio of the coefficient, the first variance ratio of the coefficient being obtained at a gray level in a first primary color among the plurality of primary colors when the total number of sustain pulses is changed from the first pulse number to the second pulse number, and the second variance ratio of the coefficient being obtained at a gray level in a second primary color different from the first primary color when the total number of sustain pulses is changed form the first pulse number to the second pulse number.