CTA and its member companies have announced specifications that 8K TVs must meet in order to carry the organization's 8K Ultra HD logo.
8K Ultra HD logo
The Consumer Technology Association (CTA), formerly known as CEA, has announced its display definition and logo for 8K Ultra HD. TV makers can start using the logo in 2020 if their TVs meet the requirements set.
CTA has specified attributes for display resolution, digital inputs, up-conversion, and bit depth. The full set of specifications is included in the table at the bottom.
To comment on CTA's requirements it is worth pointing out that besides 7680x4320 pixels in 16:9, CTA mandates that 8K TVs "shall meet a minimum of 50% contrast modulation using a 1x1 grill pattern", as defined by the International Committee for Display Metrology (ICDM). This may exclude Samsung's current 8K TVs that employ sub-pixel rendering techniques to improve viewing angles at the expense of effective resolution.
In addition, CTA requires that an 8K TV has at least one HDMI input capable of receiving 8K60 video. In other words at least one full-bandwidth HDMI 2.1 port.
Also read: Why you shouldn't buy an 8K TV in 2019
CTA (née CEA) announced a similar set of specifications plus a logo for 4K Ultra HD TVs in 2014. The new 8K program is an extension and the logo looks similar (4K replaced by 8K). The association expects US sales of 8K TVs to reach 175,000 units this year.
- "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," said Gary Shapiro, president & CEO, CTA. "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."
Another group called the 8K Association, comprising Hisense, Panasonic, Samsung and TCL, has defined 'performance specifications' for 8K TVs. The 8K Association has said that its logo will be revealed later. In Europe, logo and specifications have historically been defined by DigitalEurope who usually follows CTA's recommendations. So we are potentially looking at three 8K logos.
As said before, you should consider these minimum requirements for an 8K TV. The logo may be used by TV makers starting January 1, 2020.
8K Ultra HD - as defined by CTA
A display may be referred to as 8K Ultra High Definition or 8K UHD if it has the following attributes:
Display Resolution: The display shall have at least 33 million active pixels, with at least 7680 horizontally and 4320 vertically within a 16:9 viewable window. The aspect ratio of the image shall be properly produced and not distorted. Physical pixels shall be individually addressable such that the horizontal and vertical resolution above can be demonstrated over the full range of colors provided by the display and measured in accordance with the established guidelines for measurement of visible resolution specified in version 1.03c, section 7.8, of the International Display Measurement Standard (IDMS) specified by the International Committee for Display Metrology (ICDM). Display shall meet a minimum of 50% contrast modulation using a 1x1 grill pattern.*
* - If the contrast measurement is phase dependent, the average of the measurements of the two phases shall be used for the calculation of contrast modulation as described in section 7.2 of IDMS 1.03c.Up-conversion: The display is capable of upscaling SD, HD and 4K video and displaying it at 8K display resolution or better.
Digital Inputs: Has one or more HDMI inputs supporting the following characteristics:
- Resolution of 7680x4320 pixels.
- Bit depth of 10-bits.
- Progressive scan.
- Frame rates of 24, 30, and 60 frames per second as well as at the associated
1000/1001 fractional frame rates.
- Frame rates of 25 and 50 frames per second for displays intended for use in 50 Hz
- HDR transfer functions as specified by ITU-R BT.2100.
- RGB Colorimetry and the Non-Constant Luminance Y'C'BC'R signal format, as
specified by ITU-R BT.2100.
- At least one of the 7680x4320 HDMI inputs shall support HDCP v2.2 or equivalent
Bit Depth: Has the capability to receive 10-bit 8K images and render an image that shows responsiveness to changes to any of the 10 bits. The exact manner of processing is not specified.