Definition of HDMI
HDMI is an all-in-one interface for transmitting digital audio and video over a single cable, which is a modern alternative to many equipment used for home theaters such as LCD TVs, LED TVs, Blu-ray players, etc. HDMI was introduced in 2002 with the goal of simplifying multiple A/V cables into one single cable with small connectors to save space on devices. One HDMI cable replaces up to six audio cables and three analog video cables.
What does HDMI mean?
HDMI stands for “High-Definition Multimedia Interface” which in Spanish translates as “High Definition Multimedia Interface.” Before the development of high-definition televisions, most televisions displayed images in standard definition. The image was almost square 4:3 with a resolution of about 704 x 480 pixels. Older televisions relied on analog signals, which traveled as a constantly varying electrical current. HDMI was a solution when high-definition televisions (HDTV) appeared with a ratio of 16: 9, for digital images with a resolution of up to 1920 x 1080 pixels.
HDMI is built with a bandwidth of 5 Gbps, more than double that of HDTV (which runs at 2.2 Gbps), and is built with future technologies in mind. HDMI connectors are relatively small and contactless, as are FireWire and USB connectors that slide (plug in and out) instead of twisting or screwing in like DVI or VGA.
HDMI supports eight channels of 24-bit 192kHz uncompressed audio and 4K video resolution up to 4096×2160. It also provides encryption, equipment control, 5 volt power, and is compatible with DVI products and can be converted with a plug or adapter.
What is HDMI for?
The HDMI cable is designed to replace all analog signals, ie: S-Video, component, composite and coaxial, as well as high definition digital signals such as DVI, P&D, DFP, without compromising the fidelity of the source.
To function as an all-in-one interface, HDMI is being implemented in virtually all multimedia devices, especially high-definition devices such as HDTVs, LCDs, LEDs, DVD players, Blu-rays, computers, and stereo receivers.
HDMI uses a universal standardized connector for audio/video applications. With a modern design, HDMI is trying to finally unify all digital media components with a single cable, remote control, and interface.
Today, all televisions and most computer monitors have HDMI. HDMI is easy to use, the cables are cheap, and it carries audio. If you want to connect a computer to a TV, the first option should be HDMI.