It has been 11 years since development began on the HDMI format. Nowadays, HDMI has become a standard household item for High-Definition entertainment. Anything recent, audio and video related, is more than likely to contain a form of the HDMI connector whether it is an A, B, C, D, or E type of connector. The HDMI connection was originally designed to replace the DVI connection interface in favor of a smaller connector able to transmit audio signals also. Through the years, the HDMI standard has gone through many revisions. It all began with the original v1.0, which was released back in December of 2002, leading up to the most current HDMI 1.4, 1.4a, 1.4b. Each iteration of HDMI increased the bandwidth and capabilities of the connector.
Most recently, a new revision of HDMI has been announced, HDMI 2.0. Before you start worrying whether you need to upgrade your home theater and cinema systems, don’t because HDMI v2.0 is completely backwards compatible. So don’t worry about switching out those old HDMI cables, they would still work. Now that all of that is out of the way, HDMI 2.0 brings a lot to the table. The bandwidth of the standard has been increased to 18Gbps, which allows room for many new features. In the video field, 4K resolution is now supported at 60 fps along with support for a 21:9 video aspect ratio. HDMI 2.0 also allows for simultaneous delivery of dual video streams and up to 4 simultaneous audio streams. This now leads up to the improvements in audio capabilities. The new standard allows for up to 32 audio channel support and up to a 1536kHz sample frequency for a truly immersive experience. Maybe this will soon allow for the Dolby Atmos system to reach us consumers.
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