Patent ID: 6466190
Filing Date: 2002-10-15
Classification: G09G

Abstract:
A method for providing intensity modulation for a display of an electronic device, the method comprising the steps of:a) defining a table of intensity values, each intensity value including a respective on-ratio and a respective off-ratio; b) selecting a pixel intensity for a pixel of a display by selecting a corresponding intensity value in the table; and c) implementing the pixel intensity by using an accumulator, the accumulator having an output for determining whether the pixel is on or off, wherein the pixel is on for zero and for positive values of the output and off for negative values of the output, and wherein the output is used to implement a duty cycle for the pixel by: c1) setting an initial output of the accumulator; c2) setting the output to the output minus the off-ratio if the pixel is on; and c3) setting the output to the output plus the on-ratio if the pixel is off, thereby implementing a duty cycle for the pixel according to the on-ratio and off-ratio of the intensity value.