Method for reducing brightness variation during channel change of TV set

A brightness change and TV technology, which is applied to color TV parts, TV system parts, TVs, etc., can solve problems such as damage to the viewer's eyesight, avoid visual impact, reduce the number of changes and the amount of changes Effect

Inactive Publication Date: 2004-12-29
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the eyesight of the viewer is damaged when switching channels in the prior art, and propose a method for reducing the brightness change when the TV changes channels, so that the TV can reduce the brightness change when changing channels, and reduce the impact on the TV. Impact on the viewer's vision

Method used

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  • Method for reducing brightness variation during channel change of TV set
  • Method for reducing brightness variation during channel change of TV set
  • Method for reducing brightness variation during channel change of TV set

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Embodiment Construction

[0018] The specific implementation of the present invention is that when the CPU receives the control signal of changing the channel sent from the keypad of the remote controller or the TV set, the output brightness is the same as the still picture of the previous picture brightness; when the parameter setting of the converted target channel When finished, output the screen of the corresponding channel. The still picture can be stored in the frame memory during production, called out when the channel is changed, and displayed on the screen. At the same time, the brightness of the previous picture is used to set parameters so that the brightness of the still picture is the same as that of the previous picture. Thereby reducing the number of brightness changes and the amount of change, and reducing the number of brightness changes to at most one time, that is, changing from the brightness of the still picture to the brightness of the target channel picture, such as image 3 As s...

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Abstract

The invention relates to a TV band conversion method, in particular a method for decreasing brightness change during TV set channel conversion which comprises, outputting still frames when receiving the control signals of the conversion channels, initializing the parameters for the switching target channels and outputting the pictures for the corresponding channels. The invention can be applied to prevent the visual impact for the TV watchers during channel conversion.

Description

【Technical field】 [0001] The invention relates to the technology of changing channels of a television set, in particular to a method for reducing brightness changes when the television set changes channels. 【Background technique】 [0002] When an ordinary TV is switching channels, because the channel switching process requires a certain switching time to complete the process of identifying and synchronizing the image signal of the next channel, and this process will cause the screen to flicker and jump, so the traditional method It is to make the screen black first, and then switch to the corresponding channel to cover up the process of changing channels, such as figure 1 As shown, t0 is the channel switching time, that is, the time when the screen is black; or when the TV receives the channel switching signal, the original channel picture continues to play, but the brightness of the picture gradually dims until it becomes a complete black screen, and then The picture of th...

Claims

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Application Information

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IPC IPC(8): H04N5/14
Inventor李鸿安戴青松安慎华游开忻
OwnerSHENZHEN SKYWORTH RGB ELECTRONICS CO LTD