Display driver method and apparatus

An LCD driver, comprising:

• a processor;
• and
• a memory for storing overdrive drive scheme parameters,
• wherein the processor is adapted to control a display pixel and a measuring device to:
• (i) measure a stabilized transmission level of the display pixel when a target drive level has resulted in the stabilized transmission level;
• (ii) measure an overdrive transmission level of the display pixel at the end of a single frame after the application of an overdrive drive level;
• (iii) compare the measured overdrive transmission level with the measured stabilized transmission level to determine if the overdrive drive level is too high or too low, wherein the initial overdrive drive level is determined to be too high if there is overshoot of a transmission level above a threshold which comprises the stabilized transmission level plus a predetermined amount;
• (iv) if the overdrive drive level is too high or too low, change the overdrive drive level and repeat steps (ii) and (iii) until a suitable overdrive drive level is found;
• and
• (v) use the suitable overdrive drive level found to derive overdrive drive scheme parameters for storage in the memory.