Active HDR technology means that the range of HDR choices has been expanded and the HDR viewing experience has been optimized. In other words, with active HDR, you can get rid of the restrictions of watching movies.
TVs with active HDR technology support Dolby Vision technology, which can accurately generate a series of dynamic metadata for each scene and optimize it scene by scene, so that video images can be displayed in your home space. Presenting the expected blockbuster effect.
After being processed by active HDR technology, it is also compatible with HDR10 and HLG formats. And through the application of dynamic metadata in each scene, HDR quality can be significantly improved when displaying various types of video content.
In addition, high-dynamic range images (High-Dynamic Range, referred to as HDR) can provide more dynamic range and image details than ordinary images. According to different exposure times, LDR (Low- Dynamic Range) image, using the LDR image corresponding to the best detail at each exposure time to synthesize the final HDR image, which can better reflect the visual effects in the real environment.
Extended information:
Application of HDR: OLED TV
The picture quality improvement brought by HDR technology is intuitive and perceptible, even for ordinary viewers It can be distinguished with the naked eye, so this year many manufacturers have equipped their TV products with HDR technology. But even so, not all TV products can be a "good match" for HDR technology. After all, the application of HDR technology is not a single link, but is related to the entire ecosystem of screen display.
Presenting perfect HDR requires two conditions, the first is high contrast, and the second is excellent color expression. OLED TV is different from traditional liquid crystal display technology. It abandons the backlight and realizes organic self-illumination of each pixel, which means that each pixel can be turned on or off independently. It has infinite contrast, wide range of With advantages such as color gamut and wide viewing angle, HDR can be fully utilized on OLED TVs.
The most important thing for HDR is contrast. The lowest brightness that an LCD TV can display is 0.1 nits, and the brightest is between 500 and 1,000 nits. The contrast ratio is only 5,000 to 1. If the brightness is doubled to 1,000 nits, it can only reach 10,000 to 1.
The lowest brightness that LG OLED can display is 0.0005nits (the lowest brightness that can be detected by current brightness measurement instruments), the highest is 500nits, about 20 levels, the contrast ratio is 1 million to 1, and then In addition, the lowest brightness (0.0005nit) is almost zero, so it is equivalent to having a contrast ratio close to infinite.