Picture display apparatus and its display method

A picture display and picture technology, applied to static indicators, cathode ray tube indicators, TVs, etc., can solve problems such as brightness reduction and impact

Active Publication Date: 2007-10-31
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, when HDTV screens are implemented with CRT technology, if areas 10 and 11 are left unchanged for a long period of time, the electron beams will continue to

Method used

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  • Picture display apparatus and its display method
  • Picture display apparatus and its display method
  • Picture display apparatus and its display method

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Embodiment Construction

[0030] Generally speaking, the image signal can be divided into a luminance component and a chrominance component. The image signal can be converted into two pixel data sequences, namely the luminance component pixel data sequence and the chrominance component. Chroma component pixel data sequence. Different from the prior art where the pixels in the non-active area are set to a fixed color and brightness, the display system of the present invention generates additional pixel data based on the pixel data sequence in the active area, and uses the additional pixel data to adjust the pixels in the non-active area. The lightness and chromaticity of the pixels so that the lightness of each pixel in the non-active areas 10 and 11 can be close to the average lightness of the selected pixels in the active area, thereby preventing phosphor or other pixel materials in the active area and the inactive area Uneven aging.

[0031] In one embodiment of the present invention, the pixel data...

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Abstract

The invention discloses a mapping display system, which is used to ease the ageing problems which are produced in non-positive region of output images. When the mapping display system displays the images with different proportion of screen frame, the images extends to the positive region of display frame. The display system sets the lightness and/or chrominance of pixel in non-positive region to accord with the average lightness and/or average chrominance of pixel in positive region. Thereby the phosphorescence in positive region and non-positive region can have same aging speed with other materials to avoid the ghost phenomena.

Description

technical field [0001] The present invention relates to a picture display system, in particular to a display system for preventing aging problems caused by unused areas in the output picture. Background technique [0002] Please refer to FIG. 1 , which shows a high definition television (HDTV) screen displaying a movie image with an aspect ratio of 16:9 (width to height). And FIG. 2 shows an old TV screen displaying a movie image with a 4:3 aspect ratio (width to height). Because most of the movies still use the traditional 4:3 aspect ratio, how to deal with the compensation of the 4:3 ratio movies and display them on the 16:9 ratio HDTV screen is an urgent matter to be solved. [0003] Please refer to FIG. 3 , which shows a solution to horizontally extend the 4:3 ratio video to fill the 16:9 ratio display area, but it will cause image distortion. Another solution is to cut off the top and / or bottom of the video in 4:3 ratio to fill the display area in 16:9 ratio, as shown...

Claims

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Application Information

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IPC IPC(8): H04N5/14H04N9/64G09G5/00
Inventor 林嘉亮周智贤
Owner REALTEK SEMICON CORP
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