Digital Visual Interface (DVI) and high-definition multimedia interface (HDMI), are related, high-bandwidth, unidirectional, uncompressed digital interface standards. DVI is the connectivity option for Apple Cinema Display. Plus, all Macs have DVI ports (or, at least, adapters) for connecting to DVI-equipped monitors. 




"HDMI’s success continues to be enormous, especially in the consumer electronics (CE) segment,” says Brian O’Rourke, In-Stat analyst. "Close to 90 percent of digital television (DTV) shipments in 2007 are expected to include HDMI. In addition, HDMI penetration of large markets such as set top boxes continues to increase."

Recent research by In-Stat also found the following:

° 143 million HDMI-enabled devices will ship in 2007.

°DVI-enabled device shipments will decline sharply through 2011, due primarily to competition from DisplayPort.

° Several PC original equipment manufacturers (OEMs) released HDMI-enabled mediacentric notebooks in 2007, including Toshiba, Sony and Hewlett-Packard.

In August 2007 the Video Electronics Standards Association -- a worldwide organization with more than 180 member companies that develops and promotes display interface standards -- completed its second DisplayPort PlugTest. Apple is a member of VESA.

DisplayPort enables a common interface approach across both internal and external display connections, and allows high quality audio to be available to the display device over the same cable and the video signal. It delivers true plug-and-play with robust interoperability, and is cost-competitive with existing digital display and interconnect, according to Bill Lempesis, executive director of VESA.

Designed to be available throughout the industry as an open, extensible standard, DisplayPort is expected to accelerate adoption of protected digital outputs on personal computers to support viewing high definition and other types of protected content through an optional content protection capability, while enabling higher levels of display performance, he adds.

What's more, last HDMI Licensing, the agent responsible for licensing the High-Definition Multimedia Interface (HDMI) specification, said last September that more than 700 consumer electronics (CE) and personal computer manufacturers have adopted the HDMI specification, up from 417 from September 2006. HDMI is an interface for audiovisual equipment such as high-definition television and home theater systems. It’s able to carry a bandwidth of 5Gbps (gigabits per second), which is purportedly more than twice the bandwidth needed to transmit multi-channel audio and video. HDMI is an uncompressed, all-digital signal.

The widespread adoption of the HDMI specification by manufacturers further strengthens its position as the worldwide standard for high-definition digital connectivity, says Les Chard, president of HDMI Licensing. Nearly 200 million devices incorporating HDMI are expected to ship this 2008, with an installed base of nearly one billion HDMI-enabled devices projected by 2010.

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