Backlight dimming and LCD amplitude boost

An integrated circuit for processing graphics to be presented on a backlit display comprising:

• a buffer for receiving pixels that have been gamma pre-compensated, the pixels forming a frame;
• and
• a circuit coupled with the buffer to transform values of the pixels from a gamma space to a linear space, wherein the circuit is configured to:
• determine a first scale factor based on sampled pixel values of the frame, dim a backlight of the display by the first scale factor,
• increase pixel values to be displayed on the display by a second scale factor inversely proportional to the first scale factor;
• and
• clamp the pixel values to a maximum threshold, wherein the second scale factor is greater than an inverse of the first scale factor to compensate for the clamping.

A non-transitory computer-readable storage medium storing instructions that when executed by a processor cause the processor to reduce power consumption of a display, by performing the steps of:

• determining a first scale factor based on sampled pixel values of one or more frames;
• dimming a backlight of the display by the first scale factor;
• increasing pixel values to be displayed on the display by a second scale factor inversely proportional to the first scale factor;
• and
• clamping the pixel values to a maximum threshold, wherein the second scale factor is greater than an inverse of the first scale factor to compensate for the clamping.