UHD Premium has developed rapidly, driving the rapid development of the entire industry chain. At present, the three major chip solution providers such as HiSilicon high-end product line, Ruixinwei and Amlogic Jingchen have launched solutions to support UHD Premium.
Identify the five elements of the 4K high-level standard, which are indispensable: 4K resolution, BT2020, 10bit, 60 frames, HDR
Ultra High Definition (UHD Premium) must meet the following five elements: Based on 4K high resolution, it supports BT.2020 standard, has 10bit color depth, meets 60P frame refresh rate, and supports HDR. Only the 4K box device that meets these five elements can provide the best contrast and color, bringing 4K high-end standard (UHD Premium) ultra-high definition image shock.
Figure 1: Five elements of a true 4K TV box
Key basic indicators of 4K high-end standard (UHD Premium): Support BT.2020?
Previously, the International Telecommunication Union Radiocommunication Sector (ITU-R) promulgated the BT.2020 standard for a new generation of ultra-high definition UHD (Ultra-high definition) video production and display systems, redefining the ultra-high definition of television broadcasting and consumer electronics. The various parameter indicators displayed in the video promote the further standardization of 4K ultra-high-definition home display devices.
Figure 2: 4K development map based on BT.2020
Two key indicators of 4K high-level standard (UHD Premium): support 10bit, support 60P
Compared with the BT.709 standard, the BT.2020 standard greatly improves the performance specifications of video signals. For example, in terms of color depth, it is upgraded from 8bit to 10bit. The 10bit effectively improves the apparent color gradation caused by the 8-bit video dither, further reducing the picture quality noise and making the TV box clearer when used.
Figure 3: 10bit is significantly better than 8bit in terms of color gradation and noise reduction
BT.2020 adopts a wider color gamut space than the traditional BT.709, covering 78.5%, while BT.709 can only cover 38.5%, and the BT.2020 color space has nearly doubled.
Figure 4: BT.2020 and BT.709 coverage
The BT.2020 standard stipulates that the display resolution of Ultra-high definition ultra-high definition images is 3840×2160 and 7680×4320, and the supported refresh rate is at least 60P, which further enhances the exquisiteness and smoothness of ultra-high definition images.
Figure 5: 60P frame rate refresh rate for better motion picture display
4K high-end standard (UHD Premium) picture quality sensitive indicator: support HDR
HDR (High Dynamic Range Technology) is a major technological innovation in the field of film and television. Compared to pure resolution enhancement, HDR will greatly improve the picture quality of the playback content, resulting in more vivid picture effects. The HDR feature is to enhance the contrast while intelligently adjusting the brightness, increasing the color gamut, displaying more colors, and achieving better color effects.
Figure 6: 4K images after HDR support vivid color
In the Internet era, operators' development of pipeline business is bound to be eliminated, and the pipeline will be thicker and stronger to carry more services. The development of composite digital service providers is an effective transformation path. Developed a security business, providing 4K high-end standard (UHD Premium) content copyright, end-user transaction process, transaction information, providing an efficient security assurance mechanism, and participating in the development of upstream and downstream security standards, extending 4K high-end standards (UHD Premium The industrial chain extends to the field of information services. Creating a boutique network and being a provider of intelligent pipelines will inevitably promote the benign and rapid development of the 4K high-end standard (UHD Premium) business.
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