Patent ID: 7025252

Claim:
An apparatus for driving a plasma display panel in which images of each field displayed on the plasma display panel corresponding to input image signals are divided into a plurality of sub-fields of differing weights, and weight values of these sub-fields are combined to display gray scale, the apparatus comprising: an image signal processor performing gamma correction and error diffusion processes of the input image signals; a quantization error compensator compensating quantization errors with respect to an automatic power control level of image data output from the image signal processor, and outputting resulting image data; an error diffuser setting part of the image data output from the quantization error compensator as display errors and diffusing the display errors to peripheral pixels; a memory control and address driver generating sub-field data and address data corresponding to image data that have undergone error diffusion by the error diffuser, and applying the sub-field data and the address data to the plasma display panel; and an automatic power control and sustain/scan pulse generator generating a sub-field arrangement structure according to the automatic power control level of image data output from the image signal processor, generating control signals based on the generated sub-field arrangement, and applying the control signals to the plasma display panel.