Views: 31 Author: Site Editor Publish Time: 2020-04-01 Origin: Site
What is HDMI ?
(High-Definition Multimedia Interface) A digital interface for audio and video that provides a single-cable solution for home theater and consumer electronics equipment such as TVs, Blu-ray/DVD players and set-top boxes. Introduced in 2002, one HDMI cable took the place of nine different analog audio and video cables.
HDMI supports eight channels of 24-bit uncompressed audio at 192kHz and 4K video resolution up to 4096x2160 (as of HDMI 1.4). It also provides copy protection, A/V equipment control, 5 volts of power and compatibility with DVI and Display Port interfaces.
Added support for 4K 120p, 8K, scene-by-scene Dynamic HDR and ARC for high-end surround sound (eARC). Ultra high-speed 2.1 cables are required.
HDMI 2.0b Added support for high dynamic range (HDR) meta-data.
HDMI 2.0 increased 4K frame rate without needing new cables. Support added for 32 audio channels, two simultaneous video streams, the Rec. 2020 color space, 3D at 25 fps and a super-wide 21:9 aspect ratio.
HDMI 1.4 added major home theater enhancements, including 4K resolution, 3D, Blu-ray 3D, Ethernet sharing and the audio return channel .
HDMI 1.3 boosted resolution, colors and gamut . It added lip sync, surround sound modes and cable categories .
HDMI 1.0 supported the first high-end digital TV standard (1920x1080). Versions 1.1 and 1.2 added DVD-Audio and SACD audio formats.
Standard HDMI Cable (HDMI 1.3/1.4)
The Standard HDMI cable is designed to handle some earlier consumer applications, and is tested to reliably transmit 1080i or 720p video. Most of these cables have been replaced by the High Speed HDMI Cables but there are still some in the marketplace and consumers should note while fine for some uses, they don’t support the later resolutions, refresh rates and bandwidth requirements.
High Speed HDMI Cable(HDMI 2.0)
The High Speed HDMI Cable is designed and tested to handle video resolutions of 1080p and beyond, including advanced display technologies such as 4K@30Hz, 3D, and Deep Color. If you are using any of these technologies, or if you are connecting your 1080p HD display to a 1080p HD content source, such as a Blu-ray Disc player, this is the recommended cable.
The Ultra High Speed HDMI Cable (HDMI 2.1)
This latest HDMI cable is the only cable that complies with stringent specifications designed to ensure support for all HDMI 2.1 features including uncompressed 8k@60 and 4K@120. The cable’s bandwidth supports up to 48Gbps, it is backwards compatible with existing HDMI devices, and features exceptionally low EMI which reduces interference with nearby wireless devices. For verification and authentication the cable packaging is required to display the Ultra High Speed HDMI Certification Label which includes the Cable Name Logo printed on it.