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Contrast improving system using illumination control with asymmetric delay

A technology for illuminating signals and objects, applied in the direction of instruments, static indicators, etc., which can solve the problems of unpleasant white flashes of display devices, lowering the contrast of LCD panels, and artifacts perceived by viewers

Active Publication Date: 2008-12-03
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, this greatly reduces the contrast ratio of the LCD panel, which can be even more off-putting in low-light viewing conditions
[0005] Additionally, temporal misalignment between the raster scan of the pixels and the backlight illumination in the video frame can cause artifacts to be perceived by the viewer
In particular, increases in the illumination level of the backlight combined with time delays associated with pixel rastering can produce an unpleasant "white flash" on the display device, as is understood by those skilled in the art.

Method used

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  • Contrast improving system using illumination control with asymmetric delay
  • Contrast improving system using illumination control with asymmetric delay
  • Contrast improving system using illumination control with asymmetric delay

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Embodiment Construction

[0014] One or more specific embodiments of the invention are described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation are described in this specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, a number of implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related limitations, which may vary from one embodiment to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure.

[0015] Referring to FIG. 1, there is shown a structure of an exemplary LCD panel system 10 according to an exemplary embodiment of the present invention. T...

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Abstract

The disclosed embodiments relate to a system (52) and method (160) that enhance contrast ratio of a display device (20) using asymmetrically delayed illumination signal control. An exemplary embodiment comprises determining (164) a pixel brightness level for a video frame, and delaying (166) application of the illumination signal based on a change of the pixel brightness level.

Description

technical field [0001] The present invention relates generally to display systems. More specifically, the present invention relates to a system and method for increasing contrast in certain display systems. Background technique [0002] This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the invention that are described and / or claimed below. It is believed that this discussion is helpful to provide the reader with background information that will facilitate a better understanding of various aspects of the invention. Accordingly, it should be understood that these statements are read in this light and are not admissions of prior art. [0003] Liquid crystal display (LCD) panels are increasingly used in television display applications, primarily due to their lighter weight and thinner profile compared to cathode ray tubes (CRTs). However, the performance of LCD panels still lags behind CRTs in a number of key ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G2360/16G09G2320/064G09G2310/08G09G3/3406G09G2320/0646
Inventor 马克·鲁姆雷希约翰·黑格
Owner SHENZHEN TCL NEW-TECH CO LTD