Color temperature dynamic regulation method

A dynamic adjustment and color temperature technology, applied in static indicators, color signal processing circuits, cathode ray tube indicators, etc., can solve the problems of unsatisfactory scene colors, warm-toned scenes not bright enough, blue sky, unclear sea, etc. , to achieve the effect of improving visual enjoyment, improving color and reducing energy consumption

Active Publication Date: 2007-12-05
SHENZHEN TCL IND RES INST
View PDF0 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the color temperature is set to a higher state, such as 9300K, the color performance of cool-toned natural scenes such as blue sky, sea, forest, and grassland on the screen is better, while human skin may turn blue, and warm-toned scenes such as flowers are also not good. Not bright enough; on the contrary, set the color TV to a lower color temperature state, such as 6500K (re

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Color temperature dynamic regulation method
  • Color temperature dynamic regulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The method for dynamically adjusting the color temperature provided by the present invention is to adopt different color temperatures correspondingly by identifying the hue information of each frame of image. For LED backlight display devices, the LED backlight with a combination of red, green and blue colors can be adopted. Adjust the respective luminous intensity of the three primary colors of the backlight to adjust the color temperature.

[0014] The method is to determine the hue orientation of each pixel in each frame of image, whether it is reddish or bluish, and then compare the number of reddish pixels and bluish pixels, so as to determine which hue the frame image is biased towards. When the tone of the frame image is reddish, the backlight adopts a low color temperature of 6500K or below; when the tone of the frame image is blue, the backlight adopts a high color temperature of 9300K or above. If the frame image has no obvious hue tendency, use the default co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Via recognizing the image hue info of each frame and adopting accordingly different color temperatures (CT), the background lights (BL) of different CT are adopted for different pictures to ensure more lively beautiful pictures. This CT dynamically regulation method includes steps of: (1) firstly, determining the hue tropism (HT) of single image element (IE) on one frame picture; (2) making statistic of numbers of lean-red/ lean-blue IEs of this frame picture; (3) comparing numbers of lean-red/ lean-blue IEs of this frame picture to determine HT of this frame; (4) according to the determined HT, regulating CT of BL, i.e. controlling the brightness values of the red/ blue LEDs. This offered CT dynamically regulation method ensures the vivid color of the picture and boosts the visible enjoyment. Besides, the brightness of blue light is reduced relatively when the picture appears low CT. It raises the luminescence efficiency of BL and reduces energy consumption.

Description

technical field [0001] The invention relates to the improvement of the image of the display device, in particular to a method for adjusting the color temperature of the LED backlight display device. Background technique [0002] In the display characteristics of color TV, color temperature is an important indicator. When performing color reproduction on video images, it is necessary to define a standard white, and then use the standard white as a reference point for generating other colors. Color temperature is one way to describe standard white. [0003] In fact, the color temperature of white is not a definite value, but a range. Generally, the color temperature range from 2800K to 10000K can be called white color temperature. The higher the color temperature, the cooler the blue-blue color will be, and the warmer the reddish-yellow color will be when the color temperature is lower. That is, when the blue component is high, the color temperature is relatively high; when...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N9/73G09G5/02
Inventor 闫晓林王晖
Owner SHENZHEN TCL IND RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap