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HDR is an abbreviation of High-Dynamic Range. It was first applied in the field of photography, and there are generally HDR photographing modes on mobile phones. HDR photographs are synthesized from several different exposure photos, which is equivalent to extending the camera's latitude towards the bright end and the dark end to capture a larger dynamic range and eventually show more details with a photo.
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Two Mainstream HDR Standards: Dolby Vision and HDR 10
There are currently two HDR formats on the market, one is Dolby Vision and the other is HDR 10.
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Only HDR decoding is not enough. For HDR TVs, not only hardware decoding capability of HDR video is needed, but also TV panel support, especially to increase brightness, so as to enhance the contrast of the picture. The brightness of ordinary LCD TVs is generally around 300 nits. At present, the maximum brightness of some HDR TVs can even reach 4,000 nits. Such achievements need precise control of the screen brightness through the backlight partitioning and other picture quality technologies, but only a few high-end TVs are currently available. To show this effect.
Finally speaking about HDR content, as with 4K video, HDR content is also very poor. Whether it is HDR TV or TV box supporting HDR, what is the significance of HDR content?
In general, HDR technology can expand the contrast between bright and dark areas of an image, thereby exerting more influence on details and better reflecting the visual effects of the real environment. However, its implementation requires source, decoding, and display devices. Support for HDR to be perfect, so it is not enough for the TV box to increase HDR support only at the hardware level.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
Aluminum circuit boards is a metal-based copper clad plate with good heat dissipation function. Generally, the single layer is composed of three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal base layer. Also used for high tech use is designed as double layers, the structure is circuit layer, insulation layer, aluminum base, insulation layer, circuit layer. A very small number of applications are multi-layer boards, which can be made of ordinary multi-layer boards combined with an insulating layer and an aluminum base.
Aluminum PCB characteristics
â— Surface Mount Technology (SMT);
â— Extremely efficient treatment of thermal diffusion in circuit design;
â— Reduce product operating temperature, increase product power density and reliability, and extend product life;
â— Reduce product size and reduce hardware and assembly costs;
â— Replace the fragile ceramic substrate for better mechanical durability.
Aluminum PCB use:
â— Audio equipment
Input, output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc.
â— Power supply equipment
Switching regulator, DC/AC converter, SW regulator, etc.
â— Communication electronic equipment
High frequency amplifier, filtering appliance, reporting circuit, etc.
â— Office automation equipment
Motor drive, etc.
â— Automotive
Electronic regulator, ligniter, power controller, etc.
â— Computer
CPU board, floppy disk drive, power supply unit, etc.
â— Power module
Inverter, solid relay, rectifier bridge and so on.
â— LED lighting
With the promotion of energy-saving lamps, various energy-saving and beautiful LED lamps have been well received by the market, and aluminum PCB used for LED lamps have also begun to be applied on a large scale.
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