Patent ID: 6853359

Claim:
A data conversion method for displaying an image, comprising conversion of original frame data indicating gradation of a pixel into display frame data defining a light emission timing of a display element in a display frame period, the conversion, comprising: determining a light emission waveform for plural frames in accordance with display frame data of a current frame and display frame data of a previous frame; performing Fourier expansion of an error between the determined light emission waveform and a target light emission waveform defined by the original frame data corresponding to the determined light emission waveform; assigning weights to Fourier components of the error to add up the Fourier components of the error; determining a light emission waveform, performing Fourier expansion of an error and assigning weights to Fourier components to add up the Fourier components more than once producing calculated sum values while changing a value of the display frame data of the current frame in each time; comparing the calculated sum values; and setting display frame data of the current frame as data practically used for displaying the current frame, the display frame data corresponding to a minimum sum value.