Method for switching display modes of digital TV set
A display mode, digital TV signal technology, applied in high-definition TV systems, standard conversion and other directions, can solve problems such as poor image quality and irregularity, and achieve the effect of enhancing intelligence, simplifying operations, and improving viewing effects
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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 a 4:3 image 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 auto...
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