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Pixel compesation for locally dimmed backlight displays
2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU), 2011This paper proposes a novel pixel compensation technique for Led backlight displays. The proposed technique explicitly computes the screen intensity distribution using the point spread function (PSF) of the individual Leds to calculate per-pixel-based intensity decrease due to the dimmed Leds.
H. Emrah Tasli, A. Aydin Alatan
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Evaluation of LCD local‐dimming‐backlight system
Journal of the Society for Information Display, 2010Abstract— Local‐dimming backlight techniques can significantly improve the static contrast and power consumption of LCD panels. Several local‐dimming backlight systems have been previously reported. However, there is currently no comprehensive description regarding the evaluation of such systems.
Hanfeng Chen +4 more
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Local Dimming Design for LCD Backlight
2019The local-dimming backlight has recently been presented for use in LCD TVs. However, the image resolution is low, particularly at weak edges. In this work, a local-dimming backlight is developed to improve the image contrast and reduce power dissipation. The algorithm enhances low-level edge information to improve the perceived image resolution.
Shih-Chang Hsia +2 more
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An optical feedback system for local dimming backlight with RGB LEDs
IEEE Transactions on Consumer Electronics, 2009One of the major issues plaguing RGB LED backlight is color shift. This phenomenon is due to the characteristic changes of each Red, Green, and Blue LEDs as the time and temperature variation. To compensate this variation, many researchers are proposed color control method for the stable color management.
Tae-Wook Lee +3 more
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An Optimized Backlight Local Dimming Algorithm for Edge-Lit LED Backlight LCDs
Journal of Display Technology, 2015This paper presents an efficient optimized backlight local dimming method that minimizes power consumption under a given allowable distortion for liquid crystal displays with edge-lit light-emitting diode backlight. To reduce image quality fluctuation, an inequality constraint optimization problem is formulated using a given allowable distortion and ...
Seungwook Cha +3 more
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50.3: Proposai of Evaluation Method for Local‐Dimming Backlights
SID Symposium Digest of Technical Papers, 2010Abstract A local‐dimming control is one of the advanced ways for backlighting an LCD. It balances less power consumption with higher contrast than other ordinary backlighting systems by independently controlling each luminance of backlights according to pictures. On the other hand, a new defect arises; that is, all the backlight units
Hideki Ichioka +5 more
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64.4: Smart Algorithms for Local Dimming LED Backlight
SID Symposium Digest of Technical Papers, 2008Abstract To reduce power consumption and improve image quality including contrast ratio and color gamut, LED backlight units (BLUs) consisting of many small blocks in 2‐dimensional space are implemented. Either white‐gray‐level luminance or color is controlled by the local dimming LED BLU.
Dong‐Min Yeo +6 more
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A novel local dimming algorithm for RGB-LED backlight
SPIE Proceedings, 2009A large size RGB LED backlight unit and its local dimming algorithm are presented in this paper. The LED backlight unit and the LCD panel are controlled synchronously to enhance image contrast and improve power efficacy. Based on the image content, the backlight intensity is locally dimmed, and pixel values are compensated according to the backlight
Wei Huang +7 more
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24.3: Evaluation of LCD Backlight Local Dimming System
SID Symposium Digest of Technical Papers, 2009Abstract Backlight local dimming technique can improve the static contrast and reduce power consumption of LCDs significantly. Several backlight local dimming systems have been reported in previous literatures. However, there is still no comprehensive description about the evaluation of various backlight local dimming systems.
Hanfeng Chen +4 more
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P‐35: The Study of Vehicle Bright Backlight with Local Dimming Effect
SID Symposium Digest of Technical Papers, 2022Using Local Dimming technology, the LED backlight can be adjusted according to the image of the light and shade, the brightness of the display image's highlight part can reach the maximum, at the same time, the dark part can reduce brightness, or even shut down, in order to achieve the best contrast ratio.
Yuan Yuan Zhu +8 more
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