Patent ID: 8576216
Filing Date: 2013-11-05
Classification: G09G

Abstract:
1. Method for reducing driver energy consumption of data drivers of a plasma display panel supplied by sequences of subfield data bits in form of a codeword having a predetermined number of bits, wherein energy associated to a cell is calculated by departing from values of neighboring cells in the same subfield, both in cases in which the bit corresponding to image data would be displayed and in a case in which a bit corresponding to the image data is inverted/toggled, the method comprising for each subfield: evaluating an input transition energy caused by bit transitions at the input of a data driver using a predetermined data driver power dissipation model, an input subfield bit value and the subfield bit value of neighbor cells, evaluating a toggle transition energy caused by toggle transitions using a predetermined data driver power dissipation model being a model representing data driver power dissipation, an inverted input subfield bit value and the subfield bit value of neighbor cells, accumulating the input transition energy from subfield to subfield, and inverting an input subfield bit if said accumulated input transition energy exceeds a cell energy limit value and if said toggle transition energy is smaller than said input transition energy to reduce driver energy consumption without a perceivable image quality degradation.