HDMI (High-Definition Multimedia Interface)

What is HDMI?HDMI (High-Definition Multimedia Interface) is the first industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, and A/V receiver and an audio and/or video monitor, such as a digital television (DTV).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 digital audio, with bandwidth to spare to accommodate future enhancements and requirements.
High Definition Multimedia Interface(HDMI) technology is the global standard for connecting HDTVs to home cinema equipment, PCs, Blu-ray players, and more. It combines uncompressed high-definition video, multi-channel surround audio, and intelligent system control data into a high-speed interface that provides crystal-clear digital quality over a single cable.As an HDMI Founder and principal architect of the technology, Silicon Image has been a leader in developing and promoting the HDMI standard, which has been licenced by over 1,200 manufacturers and deployed in over a billion consumer products worldwide.
Key Features
  • Convenience- a single HDMI cable can replace as many as eleven legacy cables, simplifying the consumer experience and reducing "cable clutter"
  • Quality- because of its enormous bandwidth capacity, HDMI technology can transmit even the richest HD signals with no compression, delivering cinema-quality digital video.
  • Versatility- the HDMI Specification supports all the latest video formats including 3D and 4K
  • Reliability- rigorous compliance testing helps ensure reliable performance and cross-vendor interoperability
  • System intelligence- the HDMI interface allows for system-wide control of connected components, including automatic negotiation of TV settings and intelligent one-touch commands that can launch a series of coordinated actions


What is HDMI 1.3?HDMI 1.3 allows the availability of a new mini connector for devices such as camcordersThe availability of HDMI 1.3 depends on your specific equipment.AllHDMI cablesshould be made using the largest gauge (AWG) wire with individually shielded pairs possible with top quality workmanship. This protects your signal from Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI).Increases single-link bandwidth to 340 MHz (10.2 Gbit/s)
Optionally supports 30-bit, 36-bit, and 48-bit xvYCC with Deep Color or over one billion colors, up from 24-bit sRGB or YCbCr in previous versions.
Incorporates automatic audio syncing (Audio video sync) capability.Optionally supports output of Dolby TrueHD and DTS-HD Master Audio streams for external decoding by AV receivers.[8] TrueHD and DTS-HD are lossless audio codec formats used on Blu-ray Discs and HD DVDs. If the disc player can decode these streams into uncompressed audio, then HDMI 1.3 is not necessary, as all versions of HDMI can transport uncompressed audio. What is HDMI 1.4?HDMI 1.4 was released on May 28, 2009, and Silicon Image expects their first HDMI 1.4 products to sample in the second half of 2009.HDMI 1.4 increases the maximum resolution to 4K x 2K (3840x2160p at 24Hz/25Hz/30Hz and 4096x2160p at 24Hz, which is a resolution used with digital theaters);HDMI 1.4 includes an HDMI Ethernet Channel, which allows for a 100 Mb/s Ethernet connection between the two HDMI connected devices;HDMI 1.4 also introducesan Audio Return Channel

3D Over HDMI (HDMI 1.3 devices will only support this for 1080i)a new Micro HDMI Connector, expanded support for color spacesan Automotive Connection System.HDMI 1.4 supports several stereoscopic 3D formats including field alternative (interlaced), frame alternative, frame packing, line alternative, side-by-side half, side-by-side full, 2D + depth, and 2D + depth + graphics + graphics depth, with top/bottom half and full formats to be added in January 2010.HDMI 1.4 requires that 3D displays support the frame packing 3D formats at either 720p50 and 1080p24 or 720p60 and 1080p24.High Speed HDMI 1.3 cables can support all HDMI 1.4 features except for the HDMI Ethernet Channel.   What is HDMI 2.0?HDMI 2.0, which is backwards compatible with earlier versions of the HDMI specifications, significantly increases bandwidth up to 18Gbps and adds key enhancements to support continuing market requirements for enhancing the consumer video and audio experience. 

New functionality includes:4K@50/60, (2160p), which is 4 times the clarity of 1080p/60 video resolutionUp to 32 audio channels for a multi-dimensional immersive audio experienceUp to 1536kHz audio sample frequency for the highest audio fidelitySimultaneous delivery of dual video streams to multiple users on the same screenSimultaneous delivery of multi-stream audio to multiple users (up to 4)Support for the wide angle theatrical 21:9 video aspect ratioDynamic synchronization of video and audio streamsCEC extensions provides expanded command and control of consumer electronics devices through a single control pointHDMI 2.0 does not define new cables or new connectors. Current High Speed cables (Category 2 cables) are capable of carrying the increased bandwidth.

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