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Method for switching display modes of digital TV set

A display mode, digital TV signal technology, applied in high-definition TV system, standard conversion, etc., can solve irregularities, poor image quality and other problems, achieve the effect of simplifying operation, enhancing intelligence, and improving viewing effect

Active Publication Date: 2007-12-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a digital TV signal format automatic digital TV signal format aiming at the shortcomings of poor or irregular image quality caused by the mismatch between the digital TV signal and the TV screen in the prior art, and the user needs to manually force the display mode. Method for identifying and automatically switching display modes

Method used

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  • Method for switching display modes of digital TV set

Examples

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Embodiment 1

[0017] Referring to Fig. 1, this example is a process of automatically identifying digital TV signals and switching display modes according to the resolution. When the digital TV system runs successfully and searches for digital TV signals, the system will read the relevant parameters of the current signal format from the image frame header information, including image resolution, image frame rate, etc. If the current input signal format is 720×576 or 720×480, etc., the system will automatically recognize the current signal as a standard-definition digital TV signal, and switch the TV display mode to the standard-definition display mode. At the same time, the system will also adjust the display position of the OSD (on screen display) and the size of characters and icons, so that the input image signal can be displayed in a matching display mode, and the user's satisfaction can be obtained. Of course, if the current signal format is 1920×1080 or 1280×1080, etc., the system will...

Embodiment 2

[0019] Referring to FIG. 2 , this example is a process for automatically identifying a digital TV signal with an aspect ratio of 4:3 or 16:9 and switching the corresponding display mode. When the digital TV system runs successfully and searches for digital TV signals, the system will read the relevant parameters of the aspect ratio of each frame of the current signal from the image frame header information. If the aspect ratio of the current image is 4:3, the system will automatically set the display mode to 4:3 display mode. If the aspect ratio of the display screen is 16:9, although there will be black screen parts on both sides of the screen, but in this way It can avoid the phenomenon that the image screen is squashed when viewing 4:3 images with a 16:9 display screen. If the aspect ratio of the current image is 16:9, the system will automatically set the current TV display mode to the 16:9 image mode to display the current image in full screen. The above process is autom...

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Abstract

The invention is used for solving the issue that is the currently-used digital TV signals can't well match the TV screen so as to cause bad image quality. The method comprises: a) reading out the image format data from the frame head information of digital TV signals; according to the image format information, identifying the display mode; c) according to identified display mode, setting the display mode of TV set.

Description

technical field [0001] The invention relates to digital television technology, in particular to a digital television signal image format automatic identification and processing method. Background technique [0002] With the development of digital TV technology, digital TV products and digital TV signals will gradually enter people's lives. There are different image formats for digital TV signals. According to the resolution, there are two types: high definition and standard definition; according to the aspect ratio of the image, there are two types: 16:9 and 4:3. There is a phenomenon that when the TV display mode is 16:9, when displaying a TV signal with an image format of 4:3, the image is squashed; there is also a phenomenon that the TV works in high-definition mode, and the display image format is standard definition When using a TV signal, the picture is blocky and the resolution is low. In the prior art digital TV, when the above situation occurs while the user is wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N7/015
Inventor 蔡鸿
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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