Video signal processing apparatus and video signal processing method

A video signal processing and video signal technology, applied in the direction of TV, color TV, image communication, etc., can solve the problems of reduced switching impact and insufficient effect, and achieve the effect of reducing switching impact, improving image quality, and reducing false contours

Inactive Publication Date: 2009-09-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, by randomly diffusing the boundary portion between the area where the moving image processing is performed and the area where the still image processing is performed with a constant width, the sharp-edged noise may remain as a gentle noise with a constant width, and the switching shock reduction effect is not sufficient.

Method used

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  • Video signal processing apparatus and video signal processing method
  • Video signal processing apparatus and video signal processing method
  • Video signal processing apparatus and video signal processing method

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no. 1 approach

[0084] figure 1 It is an exploded perspective view showing the structure of the PDP 10 of the plasma display device according to the first embodiment of the present invention. On the front panel 20 made of glass as the first substrate, a plurality of display electrodes composed of a pair of strip-shaped scan electrodes 22 and strip-shaped sustain electrodes 23 are formed. In addition, a dielectric layer 24 is formed so as to cover the scan electrode 22 and the sustain electrode 23, and a protective layer 25 is formed on the dielectric layer 24. On the back plate 30 as the second substrate, a plurality of strip-shaped data electrodes 32 covered by the dielectric layer 33 are formed to three-dimensionally intersect the scan electrodes 22 and the sustain electrodes 23. On the dielectric layer 33, a plurality of partition walls 34 are arranged in parallel with the data electrode 32, and a phosphor layer 35 is provided on the dielectric layer 33 between the partition walls 34. In add...

no. 2 approach

[0148] Picture 10 It is a block diagram showing the electrical structure of the transition region generating section 201 of the plasma display device according to the second embodiment of the present invention.

[0149] Such as Picture 10 As shown, the transition region generating portion 201 of the second embodiment of the present invention has a structure, except for the structure Figure 6 In addition to the selector 104, the adder 114, and the limiter 115 of the transition region generating unit 200 of the first embodiment shown, the reduction unit 105 is further provided. In addition, here, the description will be focused on the reduction unit 105 that is a new component of the transition region generating unit 201.

[0150] The reduction unit 105, when the "stationary level" output from the stationary level delay unit 103 is less than the limiter value of the limiter 115, that is, less than the maximum value n of the "stationary level," The transition area formed by the s...

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Abstract

The present invention provides a video signal processing device, which includes: a moving image area detection unit (102), which detects a moving image area from a video signal; a transition area generation unit (200), which generates a transition area; a static level delay unit ( 103), delaying and outputting the output from the transition area generating section (200); the adding section (106), adding errors diffused from surrounding pixels to the video signal; the still image processing section (107), processing the video signal Implement still image processing; moving image processing section (108), implement moving image processing to video signal; Selection section (300), output the video signal that has implemented still image processing or the video signal that has implemented moving image processing; Subtraction section (110 ), calculates the difference between the input and output of the video signal; the multiplication unit (111), multiplies the error by a predetermined constant; and the delay unit (112), delays the error and spreads it to the surrounding pixels, and the video signal processing device It is possible to reduce false contours in moving images, and to reduce switching shock generated at the boundary between the moving image area and the still image area.

Description

Technical field [0001] The present invention relates to a plasma display panel (PDP, Plasma Display Panel) or a digital micro-mirror device (DMD, Digital Mirror Device), etc., which divides an image of one field into a plurality of subfield images to perform multi-grayscale display and image display devices and images A video signal processing device and a video signal processing method in a display method. Background technique [0002] In image display devices such as PDP or DMD that perform image display using binary control of light emission and non-light emission, generally speaking, a so-called sub-field image is divided into a plurality of sub-field images to perform multi-gradation display. Image display of field method. In the subfield method, one field period is divided into a plurality of subfields weighted by the number of light emission or the amount of light emission in time, and grayscale display is performed by combining the subfields of light emission. [0003] F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/288G09G3/20G09G3/28G09G3/34H04N5/66
CPCG09G2320/0266G09G2320/103G09G3/288G09G2320/0261G09G3/2066G09G2360/16G09G3/20G09G3/296G09G3/34H04N5/66
Inventor 山田和弘
Owner PANASONIC CORP
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