HDMI, High Definition Multimedia Interface is a digital video/audio interface technology, which is a dedicated digital interface suitable for video transmission, allowing the transmission of both audio and video signals without the need for digital-to-analog conversion before the signal is transmitted. It is the most common HD streaming media interface today. However, we often find that different hardware products correspond to different HDMI versions, and their development and updates are often much faster than the software (streaming of movies and music) and practical applications. HDMI 2.1 bandwidth will increase to 48Gbps, support new video output, and even support 10K resolution video! It also supports dynamic HDR and more. Today we will count down the development and iteration of HDMI over the generations. We hope to bring you some help in the purchase of equipment.
The earliest version of HDMI, launched in December 2002, was designed specifically for Full HD software such as Blu-ray back then. It allows sound and picture to be transmitted simultaneously with a single cable. HDMI 1.0 version supports video streaming from DVD to Blu-ray format.
Launched in May 2004, HDMI 1.1 adds support for DVD-Audio, a PCM music format that uses DVD discs to store 16bit/44.1kHz to 24bit/192kHz music, which was originally intended to be a successor to the CD format as well as SACD, but unfortunately both formats failed to catch on.
HDMI 1.2 was launched in August 2005, which largely solved the problems of low resolution and poor compatibility with computer devices supported by HDMI 1.1. 1.2 has a pixel clock running at 165 MHz and a data volume of 4.95 Gbps, so it can achieve 1080P. It can be thought of as a solution to the problem of 1080p for TVs and point-to-point for computers.
A major revision of HDMI 1.3 was launched in June 2006, increasing the bandwidth to 10.2 Gbps in one go and supporting 30bit, 36bit and 48bit xvYCC, sRGB or YCbCr Deep Color technology. In addition, Dolby TrueHD and DTS-HD MA high definition audio streaming is supported, allowing Blu-ray players to stream audio from a Blu-ray player to a supported amplifier via HDMI decoding. The subsequent HDMI 1.3a, 1.3b, 1.3b1 and 1.3c are only minor changes.
HDMI 1.4 was the most popular version in the early years, launched in May 2009, and already supports 4K resolution, but only up to 3840×2160 resolution and 30FPS frame rate due to the bandwidth of 10.2Gbps. That year was also the beginning of the 3D boom, HDMI 1.4 also supports 1080/24p, 720/50p/60p 3D images. In addition, HDMI 1.4 is compatible with HDCP (High-bandwidth Digital Content Protection), allowing the playback of Blu-ray/HD DVD and other protected media content. It also adds a new 100Mbps network transfer function, which allows you to share an internet connection through HDMI.
With the continued popularity of 3D from Avatar, HDMI 1.4a and 1.4b were released in March 2010 and October 2011 respectively, with minor modifications mainly for 3D, such as adding two more 3D formats for broadcasting and supporting 1080/120p 3D video.
HDMI 2.0, also known as "HDMI UHD", was launched in September 2013, and although HDMI 1.4 already supports 4K video, it only supports up to a lower specification of 30p. It is compatible with Rec.2020 color depth. It also supports up to 32 channels of audio and a maximum sampling rate of 1536kHz. More devices, including TVs, amplifiers, Blu-ray players, etc. are now using this HDMI version. The next two minor improvements are HDMI 2.0a and HDMI 2.0b, with the main improvement being the addition of support for HDR (Still) function.
The latest HDMI specification supports a range of higher video resolutions, refresh rates including 8K60 and 4K120, and resolutions up to 10K. However, with 4K initially becoming popular and 8K just hitting the road, 10K is in a predictable position. Although it is too early to say about the civilian sector of audio and video, but in the military, medicine, astronomy and other professional fields it can still play the advantages of its ultra-high bandwidth, dynamic HDR.
I believe that you have read this far has probably understood the history of the continuous development of HDMI, HDMI applications are also inseparable from the HDMI special connection cable, AIKE provides a variety of specifications of HDMI connection cable, please feel free to contact AIKE consulting quotes.