Display method of digital display device and digital display device

摘要

In an image signal processing unit in a Plasma Display Panel device, a noise reducer unit is provided at a former stage of an error diffusion processing unit. The noise reducer unit has a Lox-Pass Filter to input display data and an edge determining unit and a level determining unit to the Low-Pass Filter. Switching between an output which has passed through the Low-Pass Filter and an output which has not passed through the LPF is performed in a data selecting unit according to a pixel region in display data based upon respective determination results, and the selected signal is outputted as output display data. Noise contained in the input display data is reduced by the noise reducer unit while maintaining the sharpness of an image. Accordingly, a technology capable of eliminating or reducing noise in display data while maintaining sharpness of a display image is provided for digital display.