HDBaseT, promoted and advanced by the HDBaseT Alliance, is a consumer electronic (CE) and commercial connectivity standard for transmission of uncompressed high-definition video (HD), audio, power, home networking, Ethernet, USB, and some control signals, over a common category cable (Cat5e or above) using the same 8P8C modular connectors used by Ethernet.
The HDBaseT Alliance, incorporated on June 14, 2010, by Samsung Electronics, Sony Pictures Entertainment, LG Electronics, and Valens, was developed to promote the HDBaseT standard originally created by Valens. The HDBaseT 1.0 specification was also finalized in June 2010. External accessories, such as dongles, were on the market in 2010 for devices not yet embedded with HDBaseT. Products were demonstrated at the 2013 Consumer Electronics Show.
In mid-2013, the HDBaseT Alliance issued Spec 2.0, an update to the original specification, which enriches the HDBaseT offering to the pro-AV market, and enables a multimedia home connectivity solution. Spec 2.0 specifies the HDBaseT network protocol, defining the required adaptations across all layers of the OSI model, to provide the optimized services for time-sensitive applications, such as high throughput video and audio. Spec 2.0 maintains all the features of Spec 1.0, but also adds networking, switching, and control-point capabilities such as flexible and fully utilized mesh topology, distributed routing, and end-to-end error handling, enabling multipoint-to-multipoint connectivity and multistreaming. Spec 2.0 also embeds USB 2.0, enabling touch-screen functionality and keyboard-video-mouse (KVM) for no-latency transmission of ultra-high-definition audio and video. It also specifies either category cable or fiber as the transmission medium.
The IEEE has announced that HDBaseT has been accepted as the IEEE 1911 standard.
An Internet Protocol (IP) version of HDBaseT was demonstrated in 2017.
HDBaseT transmits uncompressed ultra-high-definition video (up to 4K), audio, power (up to 100W), Ethernet, USB, and other control communication (such as RS232 and IR) over category 5e cable or better up to 100 meters (330 ft), using the same 8P8C modular connectors used for Ethernet.
HDBaseT is complementary to standards such as HDMI, and it is an alternative to wireless AV, coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA. HDBaseT connects and networks CE devices such as set-top boxes, DVD players, Blu-ray Disc players, personal computers (PCs), video game consoles, and AV receivers to compatible digital audio devices, computer monitors, and digital televisions.