HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital video data. HDMI is a digital alternative to consumer analog standards, such as RF, coaxial cable, S-Video, SCART, or VGA. HDMI connects digital audio/video sources (such as set-top boxes, upconvert DVD players, HD DVD players, Blu-ray Disc players, AVCHD camcorders, personal computers (PCs), video game consoles such as the PlayStation 3, Xbox 360, and AV receivers) to compatible digital audio devices, computer monitors, video projectors, and digital televisions (TVs).

HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. By delivering crystal-clear, all-digital audio and video via a single cable, HDMI dramatically simplifies cabling and helps provide consumers with the highest-quality home theater experience.

HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8-channel, 192kHz, uncompressed digital audio and all currently-available compressed formats (such as Dolby Digital and DTS), HDMI 1.3 adds additional support for new lossless digital audio formats Dolby® TrueHD and DTS-HD Master Audio™ with bandwidth to spare to accommodate future enhancements and requirements.

Advantages of HDMI over Analog Video Interfaces (VGA, S-Video, etc.)

  • Quality: HDMI is a digital interface, it provides the best quality of the video since there are no lossy analog to digital conversions as are required for all analog connections (such as component or S-video)
  • Ease-of-use: HDMI combines video and multi-channel audio into a single cable, eliminating the cost, complexity, and confusion of multiple cables currently used in A/V systems.
  • Intelligence: HDMI supports two-way communication between the video source (such as a DVD player) and the digital television (DTV)
  • HDMI backward compatible with DVI (Digital Visual Interface)
  • HDMI can accommodate long cable lengths

HDMI Applications/Appliances

  • Digital Televisions (DTVs), HDTVs, and 3DTVs
  • Personal Computers (PCs) and Laptops
  • Smartphones and PDA Mobile Phones
  • Blu-Ray Disc Players and DVD Players
  • Digital Cameras and HD Camcorders
  • Home Theater Systems and HD Projectors