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There are several versions of HDMI
 Feb 28, 2024|View:394

HDMI Version 1.1

This is the first version of HDMI.The original version 1.1 of HDMI only supports 1080i standard signal, but it can't fully support 1080P HD specification. A few years ago, it was able to basically satisfy users' needs. By now, only supporting 1080i format can no longer meet the needs of most audio and video enthusiasts.

The original HDM version 1.1 was good enough, despite some compatibility issues, to support standard resolutions such as 800x600 and 1024x768. Even with the 1366x768 resolution that low-end flat-panel TVs are using at this stage, this initial version of the HDMI interface Q is already unacceptable to everyone as far as compatibility is concerned.

In addition, LCD TVs equipped with this interface are not capable of point-to-point output when playing back HD signals and present images with blurring and inaccurate colors.

HDMI Version 1.2

The introduction of HDMI version 1.2 largely solved the problems of low resolution and poor compatibility with computer equipment supported by HDM11.1.The HDMI standards organization introduced the HDMI1.2 standard in 2005. The interface is based on the T-Tomt version 2 standard, which implements a 165,165MHz bandwidth on a single link, providing a data transfer rate of 4.95Gbps and full support for 1080P Full HD video signals.

By modifying the standard specification, HDM version 1.2 also enhances compatibility with the display interface of computer devices, easily supporting all display resolutions, including 1366x768, and can fully support point-to-point picture display mode.

HDMI Version 1.3

HDMI version 1.3 is now the most widely used standard, but also most of the current tablet PCs use HDMI interface. HDMI version 1.3 brings the biggest change is the single link bandwidth frequency is high to 340MHZ, which will make these LCD TVs to get 10.2Gbps data transmission, version 1.3 has four pairs of transmission channels, one of which is the clock channel, the other three pairs is the TMDS channels (Transmission of Minimized Differential Signals). Their transmission speed is 3.4Gbps each.

So 3 pairs is 3*3.4=10.2Gbps, which can greatly expand the 24-bit color depth supported by HDMI 1.1 version 1.1 and 1.2 to 30-bit, 36-bit, and 48-bit (RGB or YCbCr). HDMI 1.3 supports 1080P: also supports some low-demand 3D (not in theory, but in practice).

HDMI version 1.4

HDM11.4 can already support 4K, but due to the bandwidth of 10.2Gbps, 1080p(1920x1200@30H2-50H2) can only reach 3840x2160 resolution and 30FPS frame rate.HDM1 2.0 extends the bandwidth to 18Gbps, which can support 3840x2160 resolution and 50 fps and 60 fps. seconds and 60 frames per second. It supports plug-and-play and hot-swappable, and supports 720p, 1080i@ 60hz, 1080P(1920x1200 @ 70hz)(3840x2160 @ 60 fps @ 24hz/25hz/30hz) high resolution;.

It supports Full HD and 3D display (4Kx2K @ 50/60fs @ 24HZ), and supports smooth running of mega games such as PS3. It supports Dolbv true-hd and dts-hdmasteraudio, while on the audio side it supports up to 32 channels with a sampling rate of up to 1536kHz.

HDMI version 2.0

HDM12.0 version extends the bandwidth to 18Gbps, which can realize 50/60Hz image refresh rate in 4K image transmission, making the playback vivid and smooth, with ideal video effect and no lagging softer for human eyes. At the same time, it supports up to 32 audio channels and a sampling rate of up to 1536kHz, which is currently the standard interface in the 4K industry. It also offers backward compatibility. In other words, HDMI version 2.0 can be used as HDMI version 1.4, but version 1.4 is not a substitute for HDMI version 2.0. HDMI version 2.0 is an upgraded version of HDMI version 1.4, which means that the functionality is more powerful.

As far as color saturation is concerned, HDMI 2.0 supports 10-bit color depth. Version 2.0 has better color gradation than version 1.4, and the picture is more detailed and rich.

HDMI version 2.1

The standard provides up to 48Gbps of bandwidth. More specifically, the new HDM12.1 standard now supports 7680x4320@60Hz and 4K@120hz. where 4K includes 4096x2160 pixels and 3840x2160 pixels true 4K, whereas in the HDM1 2.0 specification, up to only 4K@60Hz is supported. with up to 12 times the color depth per pixel, it's a great deal more than just color depth, which is good news for Intel, Intel NVIDIA and AMD.