| 摘要 |
PURPOSE: An apparatus for displaying a gray level of a plasma display panel and a method for the same are provided to prevent the auto power control mismatch generated at the sub-field boundary during the application of the variable sub-field algorithm. CONSTITUTION: An apparatus for displaying a gray level of a plasma display panel includes an auto power control unit(120), a first and a second frame memories(70,80), a sub-field generation unit(60), an address data generation unit(90), an average signal level adjustment unit(130) and a sustain scan pulse generation unit(100). The auto power control unit(120) detects the average signal level for each image data filed. The first and the second frame memories(70,80) stores the image data for each odd frame and the even frame. The sub-field generation unit(60) generates a gray level data corresponding to the data mapped in response to the number of sub-field determined by the detected average signal level and selectively stores the gray level data on the first and the second frame memories(70,80). The address data generation unit(90) generates an address data corresponding to the sub-field data outputted from the sub-field generation unit(60) and applies it to the plasma display panel. The average signal level adjustment unit(130) compares the number of sub-fields determined by the average signal level of the current field with the number of sub-fields determined by the average signal level of the previous field and selectively outputs the average signal level of the current field and the average signal level of the previous level. And, the sustain scan pulse generation unit(100) generates a sustain pulse and a scan pulse corresponding to the average signal level outputted from the average signal adjustment unit(130) and applies it to the plasma display panel. |
