The latest version also includes Dynamic HDR for specifying HDR metadata, Variable Refresh Rate (VRR), and ARC was updated to eARC (Enhanced Audio Return Channel) for audio formats such as Dolby Atmos and DTS:X. All of this was possible thanks to the doubling of the bandwidth and the addition of a fourth data-rate channel that meant a total of 48Gbps bitrate. This can achieve 4K resolution at 120Hz and can even push up to 8K and 10K resolutions at 30Hz or higher using Display Stream Compressions. All new high-end televisions, gaming consoles, and graphics cards are now being shipped with HDMI 2.1. The most recent version, HDMI 2.1, was announced by the HDMI Forum in 2017. It also supported 24-bit color depth at 4K resolution, up to 32 audio channels, and eventually added support for HDR in 2015 with the release of HDMI 2.0a and Hybrid Log-Gamma with HDMI 2.0b in 2016. It was launched in 2013, pushing 1080p resolution at 240Hz and 1440p at 144Hz, which was a big jump for gaming. HDMI 2.0Īn important update to the standard, HDMI 2.0 introduced support for 4K at 60Hz and increased the overall bandwidth to 18Gbps. It also saw another refresh in 2011 as 1.4b was introduced to mark the shift in production standard from LLC, with all future versions specified by the HDMI Forum. This was followed by 1.4a in 2010 that added some additional 3D formats and resolutions for broadcast content. There was also a completely different cable if you want the ethernet connection as well. It was also suggested to purchase the new High-Speed HDMI cables if you wanted to get the full experience of 1.3 and 1.4 features. It also widened the support for additional rich and natural-looking color spaces, including Adobe RGB. This version also added support for stereoscopic 3D and a new micro HDMI connector, both of which didn’t really catch on. It also included an HDMI Ethernet Channel (HEC), which included a 100-Mbit/s ethernet connection between the two HDMI-connected devices and an audio return channel or ARC. In 2009, the next version of HDMI arrived with similar resolution support, including 4K and cinema or ‘true’ 4K, which is 4096x 2160 at only 24Hz but a wider aspect ratio. Like 1.2, this one also saw a mid-cycle update with version 1.3a, which again had similar CEC updates and some modifications to the smaller type-c connector. HDMI 1.3 also introduced a new Type-C Mini HDMI connector (more on that later). This version also had support for increased color spaces and optional support for Dolby TrueHD and DTS-HD Master Audio. It also added support for 10-bit, 12-bit, and even 16-bit color depth, depending on the resolution. Additionally, it also added support for 4K or 2160p at 30Hz, although it wasn’t made official until the release of HDMI 1.4. First of all, it finally doubled the bandwidth to 10.2Gbps, which bumped up the ability to deliver 720p resolution at 240Hz, 1080p at 120Hz, and 1440p 60Hz. This was a big leap for the standard when it launched in June 2006. In 2005 itself, HDMI 1.2a was announced, which added compliance for Consumer Electronics Control (CEC), allowing multiple HDMI devices to control each other with one remote controller. This version was originally intended to derestrict formats to increase compatibility and compete with the new and emerging Display Port interface. It also added support for some newer color spaces. HDMI 1.2 and 1.2aĪrriving almost a year after HDMI 1.1, HDMI 1.2 was an important update as it included compatibility for low voltage devices, making it suitable for PCs (especially graphics cards). The resolution and refresh rate specifications remained the same. The only new feature added was DVD-Audio support, which meant that HDMI could now deliver audio ranging from single-channel mono to 5.1-channel surround sound. Making its first appearance in May 2004, HDMI 1.1 was a very small update to the existing HDMI 1.0 standard. The standard also supported 8-channel audio. It offered a data transfer rate of 4.9Gbps to deliver 720p resolution at 120Hz, 1080p at 60Hz, and 1440p at 30Hz. It primarily used a similar architecture as DVI for sending video signals but sent audio and other data during a video stream's blanking intervals. The first version of the HDMI spec arrived in December 2002. Much like USB, different specifications can be matched to different connectors/ports. Here, we have explained all the different versions of the HDMI specification that have been launched over the years, along with a quick look at the type of HDMI connectors.
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