P‐208L: Late‐News Poster: LSF Correlator — An Amending Module for SSC Local Dimming Algorithm to Increase the Static Contrast of Edge‐Lit LCDs

Abstract

A contrast enhancement extension named as LSF Correlator has been amended to our Sorted Sector Covering (SSC) algorithm for the calculation of the LED duty‐cycles of a local dimming LED backlight. As a result, the static contrast of the display is significantly increased. The LSF Correlator has been proved on an 8″ WVGA prototype with an edge‐lit backlight.

Understanding the Requirements for Automotive Displays in Ambient Light Conditions

“…An active optimization of the black level of the display is possible through using local dimming for LCDs. 5,6 Besides the contrast and black-level improvements for low ambient light conditions, the readability and visibility content in bright ambient light conditions is a quality criterion. We aimed to enhance the readability through two different approaches -one for entertainment and the other for UI content.…”

“…With a high static contrast of the display, this can be addressed. An active optimization of the black level of the display is possible through using local dimming for LCDs 5 , 6 …”

P.33: Correlation‐Enhanced SSC Local Dimming Algorithm for Homogeneous Backlight Distributions of Edge‐Lit LCDs

“…In order to improve this, an add-on named LSF Correlator for the SSC local dimming algorithm was presented [3]. The Correlator determines the degree of correlation between the profile of the several backlight strings and the luminance profile of the image to be displayed.…”

“…The SSC algorithm for the local dimming backlight could significantly reduce the power consumption, however, since it's too greedy in achieving the maximum power saving, the static contrast ratio is not increased in the same order. In order to improve this, an add-on named LSF Correlator for the SSC local dimming algorithm was presented [3]. The Correlator determines the degree of correlation between the profile of the several backlight strings and the luminance profile of the image to be displayed.…”