1, different definitions: laser tv is a projection display device that uses laser light source as display light source, cooperates with orthographic projection display technology for imaging, and is equipped with a special projection screen to receive broadcast TV programs or Internet TV programs; Television refers to the use of electronic technology and equipment to transmit moving images and audio signals.
2. Different features: laser tv has bright colors and high brightness, and the host can be flexibly placed. Red, green and blue solid-state lasers are used as system light sources; The sequential sampling, transmission and reproduction of TV signals from point to surface are completed by scanning. Television scanning systems vary from country to country. In China, there are 25 frames per second with 625 lines per frame.
3. The principle is different: laser tv imaging system shapes the emergent light of the light source module, and uses DLP technology or LCOS technology for micro-display imaging and image display; The transmitter of the TV system converts every tiny part of the scene into electrical signals according to the brightness and chromaticity, and then transmits them in turn. At the receiving end, the brightness and chromaticity of each tiny part are displayed according to the corresponding geometric position to reproduce the whole original image.
Extended data:
The purchase of TV:
1, the maximum physical resolution of the screen: 1366*768 and 1920* 1080, the former supports 720P format, which is called standard HD; The latter supports 1080P format, which is called full HD, and is used to watch Blu-ray DVD and HD digital TV.
2. Dynamic response time of the screen: it affects the tailing of dynamic images.
3. Brand: mainly depends on the screen manufacturer. In fact, there are not many screen manufacturers and suppliers, and domestic machines are assembled with imported screens and core technologies.
4.LED backlight: LED backlight LCD TV uses LED as backlight, and its color gamut is super wide, reaching 105%NTSE color gamut, with brighter colors. Physical resolution and dynamic response time are the same as those of ordinary LCD TVs.
5. Screen width: Pay attention to the size according to the viewing distance when buying. Choose 32 inches for 2 meters, 37-40 inches for 2.5 meters and 50 inches for 3 meters.
Baidu Encyclopedia-laser tv
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