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Method and system for gamma adjustment of display apparatus

A technology of a display device and an adjustment method, which is applied to static indicators, color signal processing circuits, instruments, etc., can solve the problems of difficulty, impracticality and difficulty in gamma adjustment

Inactive Publication Date: 2006-05-24
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the time and cost constraints of performing 256 gamma adjustments, it is very difficult and impractical to implement with existing techniques
Also, when the brightness level is at a relatively low or high color temperature, gamma adjustment is difficult and measurement errors increase

Method used

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  • Method and system for gamma adjustment of display apparatus
  • Method and system for gamma adjustment of display apparatus
  • Method and system for gamma adjustment of display apparatus

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Embodiment Construction

[0048] Hereinafter, embodiments of the present invention will be explained in detail with reference to the accompanying drawings, in which the same reference numerals refer to the same elements throughout the drawings.

[0049] figure 2 The control block diagram of shows a gamma conversion system of a display device capable of processing digital signals according to an embodiment of the present invention. Such as figure 2 As shown, the gamma conversion system for a display device capable of processing digital signals includes a gamma conversion table 11 set with a gamma conversion value corresponding to an input signal, and the input signal is gamma converted on the basis of the gamma conversion table 11. Gamma converter 13 for horse conversion, and determine the gamma conversion value by measuring the brightness of the video signal output at the sampled gray level, and pass the non-adjustable grayscale voltage on the basis of the determined gamma conversion value. Ping calcula...

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Abstract

A gamma adjustment method for a display device having a gamma conversion table of an input signal, the method comprising: selecting a plurality of sampled gray levels among the gray levels of the input signal; Sampling the brightness level of the output video signal related to the gray level; determining a first gamma conversion value corresponding to the sampling gray level based on the measured brightness level and storing the determined gamma conversion value; Calculating a second gamma conversion value corresponding to the gray level of the input signal excluding the sampled gray level based on the gamma conversion value corresponding to the gray level; and based on the stored first gamma conversion value and the calculated The second gamma transform value to set the gamma transform table.

Description

Technical field [0001] The present invention relates to a method and system for gamma adjustment of a display device, and in particular to a method and system for gamma adjustment of a display device in which red, green, and blue (RGB) gamma curves are adjusted to adjust color temperature Method and system. Background technique [0002] In most display devices, the white balance directly affects the image quality, and the white balance can be adjusted by the color temperature used to control the color sensitivity of the entire display screen. When manufacturing a variety of display devices, consider color temperature adjustment. Color temperature refers to the color sensitivity of achromatic colors such as the blackest, white, and gray with respect to all brightness levels. [0003] The display device has different R, G, and B cut-off points and / or electron beam densities to determine the color temperature related to the brightness level. [0004] Conventional cathode ray tube (C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/69H04N9/73
CPCG09G3/2003G09G2320/0242G09G2320/0276G09G2320/0285G09G2320/0673G09G2360/16H04N9/64
Inventor 康虎雄
Owner SAMSUNG ELECTRONICS CO LTD
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