A local dimming algorithm and device

Abstract

A method for displaying an input frame on an edge-lit display lit by a multitude of light emitting diodes (LED) placed only along one or more sides of the display, comprises the steps of determining a brightness level for each LED of the multitude of LEDs, based on the input frame and an influence of each LED on the brightness of a pixel of the display, such that the brightness of the pixel essentially corresponds to the brightness level required by the input frame and an energy consumption of the LEDs and/or a difference between a resulting backlight and the input frame is essentially minimal, according to a given measure; dimming the light emitting diodes (LED), based on at least one input frame; and displaying the input frame on the display. According to the invention, a relation between at least two different LEDs of the multi-tude of LEDs, in particular between their respective brightness levels, is taken into ac-count in the determination of the brightness levels.

Dependencies are inferred from the claim text.