PLASMA DISPLAY DEVICE AND CONTROL METHOD THEREOF

摘要

A plasma display device and display method are provided. The plasma display device expresses a video with gradations by controlling lighting of subfields forming one field, each of the subfields having a weighted luminance. A load factor calculation unit calculates a display load factor of an input video signal. A sustain pulse number change and control unit changes and controls a total number of sustain pulses of one field according to the display load factor. A gradation number conversion processing unit selects a gradation number expressed by the plasma display device according to the total number of sustain pulses and converts the input video signal into a display video signal of the selected gradation number. An error diffusion processing unit spatially diffuses a value corresponding to a decimal fraction when the gradation value of the display video signal in the selected gradation number has the value corresponding to the decimal fraction.