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Plasma display device and image processing method thereof

A display device, plasma technology, applied in the direction of identification devices, static indicators, instruments, etc., can solve the problem of half-tone noise increase, etc., achieve the effect of reducing false contour noise and half-tone noise, and optimizing reverse gray scale correction

Inactive Publication Date: 2008-11-19
LG ELECTRONICS(NANJING) PLASMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, if the number of actual grayscales used is large, a large amount of false contour noise will be generated, and if the number of actual grayscales used is small, there will be a problem of increased halftone noise

Method used

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  • Plasma display device and image processing method thereof
  • Plasma display device and image processing method thereof
  • Plasma display device and image processing method thereof

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Embodiment 1

[0048] Figure 5 A block diagram illustrating a plasma display device according to an embodiment of the present invention.

[0049] like Figure 5 As shown, a plasma display device according to an embodiment of the present invention includes: an inverse gray scale corrector 510, a gain controller 520, an integer converter 530, a half-tone converter 540, a subfield mapper 550, a data sorter 560 and data driver 570 .

[0050] When the plasma display panel displays a video signal input from the outside, with respect to the input grayscale value of the video signal, the inverse grayscale corrector 510 inversely corrects the input grayscale value of the video signal so that the displayed luminance value has a linear value .

[0051] For the red (Red), green (Green) and blue (Blue) video signals corrected by the inverse grayscale corrector 510, the gain controller 520 doubles the gain that can be adjusted by the user (User) or the assembly plant (Set maker) value to adjust the g...

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Abstract

A plasma display and an image processing method thereof are provided to optimize inverse gamma correction by converting the first output gradation value exceeding an integer among output gradation values having an integer and a decimal into an integer. A plasma display includes an inverse gamma correcting unit(510) for performing inverse correction on an input gradation value of an image signal input from the outside, and an integer converting unit(530) for converting the first output gradation value exceeding an integer among output gradation values of the inverse gamma corrected image signal having an integer and a decimal into an integer. The integer converting unit converts the first output gradation value exceeding the integer among the output gradation values with respect to all or a part of the input gradation values.

Description

1. Technical field [0001] The present invention relates to a plasma display device and its image processing method, more specifically, a plasma display device and its image processing method capable of reducing the noise displayed on the screen when the plasma display device is driven. 2. Background technology [0002] Generally, a plasma display apparatus (Plasma Display Apparatus) includes a plasma display panel in which a partition wall formed between a front panel and a rear panel forms a unit cell. Each cell is filled with charging and discharging gas such as neon (Ne), helium (He) or a mixed gas of neon and helium (Ne+He), and an inert gas containing a small amount of xenon. When discharging by high-frequency voltage, the inert gas emits vacuum ultraviolet rays (Vacuum Ultraviolet rays), so that the phosphors formed between the partition walls emit light to display the screen. Such a plasma display device has a thin and light structure, and is attracting attention as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/28G09G3/20H01J17/49G09F9/313G09G3/296
CPCG09G3/2007G09G3/296G09G2320/0673
Inventor 金相元
Owner LG ELECTRONICS(NANJING) PLASMA CO LTD