Embodiments of the present invention generally provide m Methods and
apparatus for reducing power consumption of backlit displays are
described. Power consumption is reduced by dimming backlighting by a
first scale factor and boosting pixel values by a second scale factor to
compensate for the dimming. The scale factors may be constant values.
Alternately, one or both of the scale factors may be determined based on
pixel values for one or more frames to be displayed and/or one or more
frames that have been displayed. For example, scale factors may be
calculated based on an average linear amplitude of one or more frames of
pixel values or from a maximum pixel value of one or more frames of pixel
values. A graphical processing system is described including an
integrated circuit capable of transforming a pixel value from a
gamma-compensated space to a linear space.
