Published: Thu, November 30, 2017
Science | By Cecil Little

New HDMI Forum spec supports 10K and 48Gbps bandwidth

New HDMI Forum spec supports 10K and 48Gbps bandwidth

REJOICE, ELECTRONIC NERDS, as the HDMI 2.1 spec is out, promising to bring support for imaging tech including Dynamic HDR and enough bandwidth to support 10K resolutions. The group said the HDMI Compliant Test Specification, which includes minimum requirements and testing procedures for eligible products, will be available "in stages" between Q1 and Q3 of 2018.

But putting such speculation aside, the most interesting part of HDMI 2.1 is its ability to support 4K and 8K resolutions at high frame rates.

For cinephiles, High Dynamic Range (HDR) allows the display to alter its contrast and brightness on a frame-by-frame basis, and enhanced Audio Return Channel (eARC) ups audio support to uncompressed 7.1 and high bitrate positional audio systems such as Dolby Atmos and DTS:X. It offers low electro-magnetic interference, which reduces interference with nearby wireless devices.

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The HDMI Forum has a new spec for its widely-used connector.

Current HDMI 2.0 cables, referred to by some manufacturers as HDMI UHD, give a maximum video bandwidth of 18 Gbit/s, enabling HDMI 2.0 to carry 4K video at 60 Hz with 24 bit/px color dept. It's backwards compatible with earlier versions of the HDMI specification and can thus be used with existing HDMI devices. Quick media switching (QMS) should get rid of that brief black screen when switching content. Finally, Quick Frame Transport is there to reduce latency. It also features the new Auto Low Latency Mode (ALLM).

The HDMI Forum is an open trade association that guides the future direction of HDMI technology and develops new versions of the HDMI Specification.

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SUPPORTING GRAPHICS, PHOTOS, AND AN OVERVIEW PRESENTATION are available in the electronic press kit at For more information on the HDMI Forum or on becoming a member please visit HDMI Licensing Administrator, Inc.

Earlier this year, we first began hearing about the upcoming HDMI 2.1 specification, which is set to pave the way for 4K/120Hz and 8K/60Hz. HDMI LA provides marketing, promotional, licensing and administrative services; as well as education on the benefits of the HDMI Specification to adopters, retailers and consumers.

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