| 摘要 |
Disclosed is an automatic power control (APC) method for a plasma display panel (PDP) including a plurality of address electrodes and a plurality of scan electrodes and sustain electrodes alternately arranged in pairs, which includes: calculating a load ratio change between current input data and previous input data; comparing the calculated load ratio change with a predetermined number of threshold values to determine to which area it belongs; determining a brightness control speed which is a time for applying a new brightness value matched with the determined area; and outputting sustain pulse information corresponding to a load ratio of current data at the determined brightness control speed. Also, the brightness control speed is shortened in the high gray, and it is lengthened in the low gray.
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