Methods for driving electro-optic displays

A method of driving an electro-optic display having a plurality of pixels, the method comprising driving the display from a first image to a second image using a first drive scheme, and thereafter driving the display from the second image to a third image using a second drive scheme different from the first drive scheme and having at least one impulse differential gray level having an impulse potential different from the corresponding gray level in the first drive scheme, and wherein each pixel which is in an impulse differential gray level in the second image is driven from the second image to the third image using a modified version of the second drive scheme such that the modified version reduces the impulse differential introduced by switching from the first drive scheme to the second drive scheme, the modification of the second drive scheme depending upon the original impulse differential at each pixel when the second image is displayed, and wherein, for pixels having at least one impulse differential gray level in the second image, the subsequent transition from the third image to a fourth image is also conducted using the modified second drive scheme but after a limited number of transitions using the modified second drive scheme, all subsequent transitions are conducted using the second drive scheme.