Secondary Age TV Standard: Super Hi-Vision
Every revolution in video technology can take the user's visual experience to new heights, such as DVD players to Blu-ray disc players; and, for example, SDTV (parameter picture articles) signals to HDTV signals, the importance of video technology and The meaning is self-evident. In recent years, ultra-high-definition 4K TV has exploded, and now 4K TV has covered three sub-markets of high, medium and low, showing the domineering of the unified rivers and lakes. Unfortunately, 4K is only a "stepping stone" in the era of ultra high definition, and the higher order 8K is the real master of the next era.
Super HD 8K TV technology authority analysis
Ultra High Definition Television (UHDTV), translated as Ultra HD TV, and UHDTV TV standard officially registered as "Super Hi-Vision", in a strict sense, Super Hi-Vision is the exact name of the next generation of TV video technology. So, what is the relationship between the Super Hi-Vision standard and 4K and 8K TVs? We explain this through a picture.
Super Hi-Vision / 8K Ultra HD uses the same standard
For a long time, 4K TV lacks strict standard support. Except for the 3840×2160 resolution, the other indicators follow the existing Full HD (1080p) standard, which is completely irrelevant to the so-called “secondary eraâ€. The Super Hi-Vision standard, already approved by the International Telecommunication Union (ITU) and the Society of Motion Picture and Television Engineers (SMPTE), has detailed new indicators, such as picture frame rate, standard viewing distance, viewing angle mode and audio standards. .
Ultra HD 8K resolution is just one of the “hard indicators†of the Super Hi-Vision standard.
It can be seen that Super Hi-Vision has a standard resolution of 7680×4320 and a total pixel size of 33 million. In order to better support the naked-eye 3D display technology, the Super Hi-Vision frame rate is uniformly increased to 120 fps; standard viewing distance and viewing angle The model has also been greatly improved. More importantly, the 8K Ultra HD resolution corresponds to the 22.2 channel standard, and the 4K and 1080p resolution 5.1 channels are completely incomparable.
Super Hi-Vision is compatible with existing 1080p images
â— Super Hi-Vision standard development process
As early as 2006, the NHK Science and Technical Research Laboratories (hereinafter referred to as NHK) submitted Super Hi-Vision videos to the International Telecommunications Union (ITU) and the Society of Motion Picture and Television Engineers (SMPTE). Standardization of technology applications, followed by the International Telecommunications Union to use Super Hi-Vision video technology as a draft recommendation for UHDTV.
Super Hi-Vision Complete Specification
When NHK applied for standardization of Super Hi-Vision video technology, it said: This technology is a digital video system designed to express variety, sports, drama, film, concert, etc., and has become a high-definition general image format (HDCIF) in view of 1920×1080. Therefore, the image quality of Super Hi-Vision needs to be higher than the existing HDCIF standard. Super Hi-Vision video technology is divided into UHDTV1 (3840×2160) and UHDTV2 (7680×4320) standards. According to different national regions, the frame rates of 50Hz, 60Hz and 59.94Hz are supported, and all frame rates are progressive.
Super Hi-Vision Video Technology R&D Lab
Japanese and American research institutes have shown that HDTV widescreen can bring a better visual experience than SDTV, so Super Hi-Vision video technology continues to use 16:9 display ratio, and Super Hi-Vision two standard pixels are HDCIF ( 4 times (3840×2160) and 16 times (7680×4320) of 1920×1080), in addition, color coordinates of basic color coordinates, standard white, photoelectric conversion function, and luminance/color difference equation of Super Hi-Vision video system Both are compatible with existing standards such as ITU-R BT.709 and SMPTE RP177. In summary, it can be said that Super Hi-Vision video technology has achieved the ultimate in compatibility.
◠7680×4320 video capture “secondary†model
Super Hi-Vision video technology 7680×4320 has a resolution of 33 million pixels. Currently, most full-frame SLR cameras on the market are around 24 million pixels. In other words, most full-frame SLR cameras cannot take photos. Covering the screen of the Super Hi-Vision display device, how is the 7680×4320 resolution video collected?
Super Hi-Vision video capture camera before 2012 "competitive volume"
The Super Hi-Vision video system has been drafted since 2006. The 7680×4320 resolution of up to 33 megapixels can only be “extraordinary.†NHK uses Fujifilm's 4-channel beam splitting prism and 4 Micron. The more than 8 million pixel CMOS image sensor produced by the technology constitutes a 4CMOS system, in which two pieces of green light are induced and obliquely shifted by the diagonal pixels, and the other two pieces respectively induce red and blue light. Subsequently, NHK worked with Ikegami Communication Co., Ltd. to design the camera required for Super Hi-Vision quality.
The Super Hi-Vision video capture camera since 2013 is “small and portableâ€
In 2011, NHK Japan exhibited the 2.5-inch 33 megapixel CMOS image sensor sample for the first time on the Open House platform, which caused technical control attention. NHK engineers said that they are considering lens resolution and size, sensor sensitivity and dynamic range. It was decided to control the pixel size to 3.8 microns and use a low voltage differential method to meet the high-speed transmission requirements of Super Hi-Vision cameras, and that the low-voltage differential method can effectively reduce power consumption.
Super Hi-Vision projector and TV
After the Super Hi-Vision projector completes the video capture work, it needs to display the corresponding Super Hi-Vision display terminal. Considering the super Hi-Vision video technology, there is still much room for improvement and improvement. The reliable display device can be used for NHK. Said the same key.
JVC Super Hi-Vision projector
In order to accurately restore the image quality of Super Hi-Vision technology, NHK teamed up with the well-known projector manufacturer JVC, and after deep cooperation, successfully designed the projector required for Super Hi-Vision video technology, the projector has 1000000: 1 super high contrast.
Ultra HD 8K clearly identifies the player's name
The performance of the Super Hi-Vision projector contracted by NHK and JVC is outstanding. It is reported that the major brands of projectors such as Sony and NEC are researching Super Hi-Vision projector products. In addition to projectors, the industry currently associated with Super Hi-Vision video technology is researching plasma display products over 100 inches, and even displays and televisions.
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