| 摘要 |
A plasma display panel (PDP) driving apparatus and a gray level expressing method thereof that improves an expression of the gray level using a subfield arrangement that depends on sustain pulses. An input image signal undergoes inverse gamma correction so that an inverse gamma correction gray level corresponding to a number of sustain pulses applied to the PDP is expressed. The inverse gamma correction gray level is converted to subfields that depend on the number of sustain pulses. Alternatively to providing an arbitrary sustain pulse number, the sustain pulse number may be determined per frame according to an average signal level in the input image signal. Then, the inverse gamma table may be determined differently based on the sustain pulse number so as to express the inverse gamma gray level corresponding to the sustain pulse number. |
