Since the HDMI 2.1 specification was released at CES 2017, the HDMI Forum, a standard governing body for HDMI cables, By the end of 2017 Formally announced the HDMI 2.1 technical standards in the 2018 CES show, HDMI LA is more on the HDMI 2.1 features a more detailed display, World Wide Web home network also had the honor to interview to Jeff LA technical director Jeff Park, answered everyone for HDMI 2.1 more concerned about the topic.
Jeff Park, Technical Director, HDMI LAFor HDMI 2.1 vs. HDMI 2.0, Jeff Park said the HDMI 2.1 standard targets the future of video output, which is a significant increase over broadband in HDMI 2.1, up from 18Gbps in HDMI 2.0 to the largest 48Gbps.This can support new video output, such as 4K video at 1200Hz and 8K video at 60Hz.
Jeff Park said that in the past, the 8K model was used for transmission. An 8K device needed to connect four HDMI 2.0 standard HDMI cables, and the HDMI 2.1 standard allowed one cable to work perfectly.
At this CES HDMI booth, HDMI presented demos with eARC, ultra-high speed bandwidth, ultra-fast dynamic HDR and other HDMI 2.1 features
In practice, Jeff Park said that HDMI 2.1 also adds multiple enhanced refresh rate technologies for video, movies and games to ensure that users can use the high resolution without fading. For example,
* For the game's 'variable refresh rate (VRR)', can reduce the picture delay, Caton, torn phenomenon, allowing gamers to play more fluid.
There is also 'Fast Media Switching (QMS)' for video and movies that eliminates the white screen delay before the content is displayed.
· Fast Frame Transfer (QFT) is for VR Virtual Reality, dramatically reducing latency and making real-time interactive experiences even better.
In addition, there is "automatic low delay mode (ALLM)", in this mode can automatically set the best delay.
In terms of audio, the HDMI 2.1 ARC audio backhaul feature has been upgraded to better eARC, not only increasing bandwidth from 1Mbps to 38Mbps in HDMI 2.0, but also providing plenty of room for audio formats that require more bandwidth. Surround sound formats such as Dolby Atmos and DTS HD Master Audio support, and up to eight 192kHz / 24-bit audio channels.
HDMI 2.1 has been upgraded to technical standards, so there is a new standard for data lines, using the Ultra High Speed HDMI Cable. Jeff Park said the new data line features ultra-low electromagnetic radiation and It is backward compatible and can be used with existing data cables without the use of a new ultra-high speed data cable, but it is not compatible with the new features in HDMI 2.1.
Although so great for audio and video, but currently able to meet the HDMI 2.1 standard products on the market did not.
Jeff Park said there are many products that have HDMI 2.1 enabled but none of them have yet been certified for these features and may be available later in 2018 but HDMI 2.1 is already in the fast lane.
According to foreign media reports, HDMI Forum is expected in the second quarter of 2018 announced the first phase of the eligibility test requirements, and completed all the test requirements in the third quarter. Then in 2019 CES, may be able to see the first Meet the HDMI 2.1 standard batch of products at this time, 8K era will really open.
