‘Fake’ HDMI 2.1: The standard that isn’t

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PUBLIC DEFENDER By Brian Livingston If you’re interested in buying new monitors for your business or home that support the latest HDMI 2.1 standard —
[See the full post at: ‘Fake’ HDMI 2.1: The standard that isn’t]

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lmacri, rc primak, AlexEiffel

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Higher video resolutions with Fixed Rate Link signaling. The most important statistic for business and home users is that HDMI 2.1 supports 4K monitors at a high refresh rate of up to 144Hz with 10-bit uncompressed video via FLR. This mode requires devices and cables to transmit as much as 48Gbps of data. HDMI 2.0 supported only 4K 60Hz with 8-bit color depth, using an older spec called Transition-Minimized Differential Signaling or TMDS. (Strangely, FRL is not shown in the HDMI organization’s table in Figure 2.)

There’s an inconsistency in the acronyms here, possibly as a result of copying from a web site. At least one product site has the same typo in their description of FRL — they transposed it to FLR in their heading, but had it correct in their body:

https://www.avproedge.com/news/bullet-train-48gbps-aoc-cables

-- rc primak

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Nothing in the story was cut and pasted. The transposition of “FRL” to “FLR” was a typo that was caught by the proofreader but somehow didn’t get fixed before publication. We may be able to correct it on the page. Thanks for noticing!

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rc primak

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Excellent article, and well documented, as usual.

I sure am glad my needs don’t include advanced gaming or critical high-resolution applications!

A lot to unpack here.

-- rc primak

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