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What does HDMI 2.1 offer?


With the steady growth in screen resolutions along with bandwidth requirements for graphics cards, game consoles and displays, the cables and connectors must grow with them.

HDMI 2.1 supports a bandwidth of up to 48 Gbit/sec so cables need to be able to support that. Uncompressed AV signals of up to 8K @ 60Hz 4:4:4 12 Bit with DSC compression up to 10240 x 4320 4:2:0 12 bit.

HDMI 2.1 supports Automatic Low Latency Mode (ALLM) which is of interest to gamers because it switches off time consuming post-processing and preparation functions for TV sets and monitors in favour of transmission time and thus a very fast response time.

HDMI 2.1 supports Variable Refresh Rate (VRR) which allows source devices and displays to vary the refresh rate depending n the content of the currently displayed scene or game situation. Fast scenes are show with a higher refresh rate while slower scenes are shown with a correspondingly lower refresh rate. This eliminates jerking and tearing.

HDMI 2.1 supports Dynamic HDR so, depending on the source, a connected display can change the metadata scene by scene or even picture by picture and thus offer the big picture dynamics, i.e. a colour and contrast range depending on the individual picture, at any time.

HDMI 2.1 offers DSC 1.2 which is a high-performance compression algorithm reduced the signal bandwidth that is required for very high resolutions such as 10K so that these extremely high resolutions can be displayed.

HDMI 2.1 supports enhanced Audio Return Channel that uses object-based audio signals offering uncompressed 7.1 and 5.1 channel audio up to 192kHz in Dolby Atmos or DTS: Xi and up to 32 audio channels in the HDMI ARC. This means that all extended audio features can now also be fed into an AV receiver via the audio return channel backwards from the display device.

Contact us for HDMI 2.1 spec cables and signal transmission. ICS Technologies is based in Brisbane, Australia with contractors across Australia.


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