Maintaining DC balance in electronic paper displays using contrast correction

摘要

Systems and methods for maintaining DC balance in bi-stable displays using contrast correction are disclosed. The system includes a DC balance module and storage for DC corrective waveforms. The DC balance module generates transitional driving schemes which drive pixels to new color values while simultaneously shifting each pixel's relative impulse potential values to be in line with those of the new speed drive scheme. The transitional driving schemes ensure DC balance by performing contrast and color-depth correction. In particular, the transitional driving schemes lower the contrast and reduce the color depth of pixels when increasing the speed of page flipping and raise the contrast and color depth when reducing the speed of page flipping. The present embodiment of the invention also includes a method for variable-speed page flipping with contrast correction and a method for creating a transitional driving scheme.