Patent ID: 9098272
Filing Date: 2015-08-04
Classification: G06F,Y02D

Abstract:
1. An automatic load detection system comprising: a display controller generating a control signal; a selector operable to select pixel data or a first reference signal, wherein said selection is responsive to said control signal, and wherein said selector is coupled to said display controller, wherein said first reference signal is operable for load detection, wherein said control signal is raster information for a pixel being processed, wherein said raster information provides coordinates of said pixel and wherein said first reference signal is selected when said control signal corresponds to an non-displayed portion of a digital video frame; a digital to analog converter (DAC) operable to receive a selection by said selector and outputs an output signal, wherein said DAC is coupled to said selector, and wherein said output signal has a first detectable value when said first reference signal is selected and a load is coupled to said DAC, and wherein said output signal has a second detectable value when said first reference signal is selected and said load is uncoupled from said DAC; and a comparator operable to compare said output signal to a second reference signal and outputting a comparison signal, wherein said comparator is coupled to said DAC, and wherein said comparison signal has a third value when said output signal has said first detectable value, and wherein said comparison signal has a fourth value when said output signal has said second detectable value, and wherein said fourth value indicates that said load is uncoupled from said DAC.