The Consumer Technology Association (CTA), probably best known as the industry body behind the annual consumer tech show, CES, has announced a specification and certification programme for 8K UHD TVs made from 2020 onwards.However, CTA is also an industry-wide respected standards board representing more than 2,200 consumer technology companies and its Video Division Board includes many of the world’s leading TV makers and retailers. The licensing programme will begin shortly and address the requirements for the resolution of the display, digital inputs, HDR, up-conversion and bit-depth. Approved CTA logos will available for use on successfully certified 8K TVs from Jan 1st 2020 - so expect to see some at next year’s CES.
The specific attributes include:
Display Resolution: At least 33 million active pixels, with at least 7680 horizontally and 4320 vertically within a 16:9 viewable window, and specific measurement methodology in accordance with industry standards.
Digital Inputs: One or more HDMI inputs supporting resolution of 7680x4320 pixels; bit depth of 10-bits; frame rates of 24, 30 and 60 frames per second; HDR transfer functions and colourimetry as specified by ITU-R BT.2100; and HDCP v2.2 or equivalent content protection.
Up-conversion: Capability to upscale SD, HD and 4K video and display it at 8K UHD display resolution.
Bit Depth: Capability to receive 10-bit 8K images and render an image that shows responsiveness to changes to any of the 10 bits.
Gary Shapiro, president and CEO, CTA. commented, “CTA is home to video industry players across the ecosystem – from manufacturers to the content and entertainment sector – and we’re proud to convene such a diverse group of innovative companies to work together.”
He added, “This 8K Ultra HD definition is the product of our Video Division Board’s dedication and hard work. As a result, retailers and consumers will know products that carry the accompanying logo deliver 8K UHD quality and performance.”
But hang on, isn’t there already a certification programme already in place from the 8K Association?
Yes, there is, and there is some crossover between the two programmes. However, one of the main differences lies in the use of the contrast modulation methodology which is used by the International Committee for Display Metrology (ICDM) and measures the extent to which the individual pixels can be differentiated within the defined resolution.
Here, the CTA specifications stipulate that using this ICDM parameter an 8K display must reach ‘a minimum of 50 percent contrast modulation using a 1x1 grill pattern.’
This is good news for LG whose latest 8K TVs reach 90 percent contrast modulation but less so for Samsung who achieves a much lower than required rating of 12 percent. It appears that Samsung’s use of sub-pixel rendering to improve viewing angles comes with a level of compromise in effective resolution that is not overlooked by the CTA requirements.
The upshot of this could see Samsung sticking to the 8K Association requirements since it is already a member of that body while LG, who is not, champions the CTA specifications. Other TV manufacturers will likely step into the camp that aligns most closely with their own implementation of 8K rather than ensuring their 8K TVs meet or exceed a single approved standard. So it's possible that 8K TVs could come in two flavours going forward.
The CTA’s most recent forecast projects that sales of 8K UHD TVs in the US will reach 175,000 units and US$734 million in revenue in 2019.
Do members agree that an 8K TV standard is a good idea? But will rival logos cause consumer confusion?
Source: Press release, www.digitaltveurope.com www.wikipedia.com
Image Source: Press release
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