An image data correction method and apparatus for a plasma display panel,
and a plasma display panel device having the apparatus. The image data
correction method calculates a load factor of video signals fed into a
plasma display panel, and determines an automatic power control level
corresponding to the calculated load factor. The method further involves
generating sustain pulse information and the number of subfields and
selecting a correction table corresponding to the number of subfields and
the automatic power control level from the memory. Then, the image data
is corrected with reference to the correction table. By this image data
correction, white chromaticity can be maintained constantly while
enhancing the color reproducibility of each subfield.