Plasma display device driven in a subframe mode

摘要

The plasma display device has a plasma display panel (20) and a driving part for driving the plasma display panel (20) in a subframe mode. The driving part has a circuit (10) for calculating the length of one frame based on one period of a vertical synchronizing signal introduced along with an image signal from an external device, a circuit (11) for calculating the total number of sustaining pulses contained in one frame based on brightness information contained in the image signal, and a circuit (12) for calculating the length of one driving period required for displaying one frame. The length of one frame and the length of one driving period thus obtained are then compared in a comparing circuit (14). If the one frame length is found to be shorter than the one driving length, the total number of sustaining pulses or the number of scan lines will be reduced so that the one frame length becomes shorter than the length of one driving period, thus avoiding an extraordinary display.