What Is Digital HDTV?
Digital TV refers to a television system that uses digital technology from editing, production, signal transmission to reception and processing. According to its information processing and transmission capabilities, digital television systems can generally be divided into standard definition television and high definition television.
HD digital TV
Right!
- Chinese name
- HD digital TV
- Applied discipline
- information Technology
- Scope of application
- Digital technology
- Attributes
- Audio and video signals from editing to production
- Digital TV refers to a television system that uses digital technology from editing, production, signal transmission to reception and processing. According to its information processing and transmission capabilities, digital television systems can generally be divided into standard definition television and high definition television.
- Introduction Digital TV refers to a television system that uses digital technology from editing, production, signal transmission to reception and processing. According to its information processing and transmission capabilities, digital television systems can generally be divided into standard definition television and high definition television.
Features The standard for high-definition television receivers is equipment with the following minimum performance: High-definition digital television 1. Can receive and demodulate RF signals modulated by high-definition television signals.
2. Can decode and display video signals with 1920X1080I / 50Hz or higher image format.
3 The aspect ratio of the display is 16: 9.
4 It can correctly display images with an aspect ratio of 16: 9, with a horizontal and vertical resolution of 720 TV lines.
5. Can decode and output independent multi-channel sound.
The decoding and reproduction of related high-definition digital signals is a matter of our users. Since digital TV standards have not yet been established, TV manufacturers have not built decoding devices into TVs sold on the market. Instead, users are equipped with set-top boxes according to different local standards and then reproduce the pictures on their TVs. Of course, the final picture clarity depends on the clarity of the video signal and the highest resolution of the TV. Therefore, the so-called digital TV available on the market is actually a display. We call it "HDTVReady". In the future, the standard is determined. When the manufacturer launches a TV with a built-in set-top box, we can call it "HDTV Receiver".
Someone asked, since the standards are not set, do we need to buy digital TVs on the market? Although people in most regions are not yet enjoying digital TV, we can still buy products like plasma (PDP), liquid crystal (LCD), and rear projection TVs to meet our needs for large size and high quality pictures. It's like that although ADSL hasn't been activated at home, it doesn't prevent us from buying a computer to use a cat to dial in to the Internet. When ADSL is activated, we can enjoy the high-speed Internet again. If you buy a high-definition TV, you can also enjoy better TV picture and DVD playback effect than the 29-inch old TV. If you have EVD and HDTV playback equipment, the movie watching will be very different.
Analog TV stick: can only watch analog signal programs, the price is relatively cheap, basically between 100-200 yuan, the appearance is slightly larger than ordinary U disk. It's a pity not to be able to watch high-definition programs despite the cheap price?
DVB-T TV Stick: DVB-T TV stick is a product that was listed before the digital TV terrestrial transmission standard of our country was launched. As the European DVB standard was widely used in China at that time, with the introduction of the national standard, such products did not have much application, and it is not recommended to buy.
High-definition USB TV stick: Also called DMB-TH standard TV stick. DMB-TH is a digital terrestrial television transmission standard introduced by China. In the future, all terrestrial digital televisions in China will use this standard for transmission. It is believed that this type of TV stick is the future trend.
Today we mainly introduce the high-definition USB TV stick. The following is the method of playing programs using the USB high-definition TV stick. We will only give a brief introduction. The specific operation will be carried out according to the instructions.