NONLINEARLY CONVERTING A SIGNAL TO COMPENSATE FOR NON-UNIFORMITIES AND DEGRADATIONS IN A DISPLAY

摘要

A digital signal directed to a display (e.g., a plurality of display elements forming an array of display elements) may be converted into an analog signal using a nonlinear relationship. In one embodiment, a drive signal may be provided to at least one display element of the array of display elements in response to calibration data. Embedding the calibration data using the nonlinear relationship, the amplitude of the drive signal may be determined in order to control a perceptible output from the at least one display element of the array of display elements. Thus, a compensation for initial non-uniformity degradation over time, and/or non-uniform degradation may be provided to the at least one display element of the array of display elements. The nonlinear relationship reduces the number of discrete calibration data levels required to avoid perceptible contrast among neighboring pixels that leads to contouring effects. Optionally, a gamma correction may also be simultaneously provided with the compensation by adjusting the duration of the drive signal directed to the at least one display element of the array of display elements.