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Screen resolution switching method and system

A screen resolution and switching system technology, applied in the screen resolution switching method and system field, can solve problems such as screen jitter, reduce user experience, affect set-top box performance, etc., and achieve the effect of enhancing user experience and smoothing the screen

Active Publication Date: 2017-07-11
SHENZHEN IPANEL TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-frequency SD switching sometimes does not switch the entire screen. For example, when only the display window is switched, if the global resolution is switched as a whole, it is easy to cause screen jitter, which will affect the performance of the set-top box and reduce the user experience.

Method used

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  • Screen resolution switching method and system
  • Screen resolution switching method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] To enlarge 4*4 pixels to 8*8 pixels, please refer to the attached figure 2 , figure 2 The mapping table for enlarging 4*4 pixels to 8*8 pixels is provided for the embodiment of the present invention. Such as figure 2 As shown, for this embodiment, it belongs to the scaling that can be divisible by multiples. The ratio of the length and width of the 4*4 grid is multiplied by a specific multiple of 2 (8 / 4=2), and the original points in the 4*4 grid The point A(1, 1) is mapped to the 4 points (1, 1), (1, 2), (2, 1), (2, 2) of the 8*8 grid.

[0077] For the pixel image in the obtained pixel mapping table, the pixel image needs to be smoothed by a bilinear interpolation algorithm, and the pixel image can be smoothed by selecting the pixel area around the original image pixel on the pixel area x*y of the picture to be scaled The four pixels are mixed according to the preset calculation formula to obtain a smooth image. Among them, the above preset calculation formula i...

Embodiment 2

[0081] For Example 1, some cases can be solved for divisible ratios, but if you switch from 4*4 to 11*11, the points of 4*4 pixels cannot be evenly divided into the pixels of 11*11, because 11 / 4= 2.75, not an integer multiple, does not have an effective ratio to scale. Other circumstances need to be considered.

[0082] Please refer to the attached image 3 , image 3 The 4*4 pixels provided for the embodiment of the present invention are enlarged to 11*11 pixel mapping table. Such as image 3 As shown, for this embodiment, it belongs to the scaling that cannot be divisible by multiples, and the xy mapping table needs to be established first:

[0083] Taking the switch from 4*4 to 11*11 as an example, first introduce the mapping table in the x direction, and the mapping table in the y direction can be obtained by analogy. specific:

[0084] First, take the quotient to scale 11 / 4=2.75, the quotient is 2, and the remainder is 3. Take the quotient, which is the multiple of ...

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Abstract

The invention discloses a screen resolution switching method and system. The method comprises the following steps: determining a pixel region x*y and a pixel mapping region x / *y / of a picture to be zoomed; respectively calculating mapping tables in the x and y directions according to a preset rule, and building an x / y / mapping table; mapping pixel points of the pixel region x*y to be zoomed to the pixel mapping region x / *y / according to the x / y / mapping table, thus obtaining a switched pixel image; smoothing the pixel image through a bilinear interpolation algorithm. According to the screen resolution switching method disclosed by the invention, realizing switching from high resolution to standard definition, if only a small part of a display region is changed, high-resolution pixel points are mapped and zoomed up to standard-resolution pixel points one by one in a way of building the mapping table, thus realizing partial updating; furthermore, the pixel image is smoothed, so that the picture is relatively smooth, no phenomenon of image distortion is caused, and the user experience is enhanced.

Description

technical field [0001] The invention relates to the technical field of screen display, in particular to a screen resolution switching method and system. Background technique [0002] With the continuous development of the TV industry, the display resolution of the screen has changed for HDTV and SDTV. Display resolution, that is, screen resolution, is the precision of the screen image, and refers to how many pixels the display can display. Since points, lines and planes on the screen are all composed of pixels, the more pixels the display can display, the finer the picture, and the more information can be displayed in the same screen area, so resolution is a very important performance One of the indicators. The entire image can be imagined as a large chessboard, and the resolution is expressed as the number of intersections of all longitude and latitude lines. When the display resolution is constant, the smaller the display screen is, the clearer the image will be. Conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/14H04N7/01
CPCG06F3/147H04N7/0117
Inventor 徐佳宏朱吕亮梁达源
Owner SHENZHEN IPANEL TECH LTD
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