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05 September 2010



HDMI: The digital display link

By Bob O'Donnell, IDC
Courtesy of Digital TV Designline
Sep 04, 2007
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The transition of entertainment content from analog to digital form has sparked a revolution in the way that content is created, transported and consumed. This is true for every type of content voice, images, music, TV, etc., and the effect is profound for each player involved in providing and consuming this content. From the artists and studios creating the content, to service providers delivering it to homes and businesses, to consumer devices manufacturers and ultimately the consumer, the digital revolution presents exciting new opportunities as well as important challenges.

Each of the players in this value chain is driven by the following common set of factors:

  • Quality, primarily a function of new formats (resolution, color depth, refresh, lossless audio) and the quantum performance improvements they enable.
  • Flexibility in terms of the way content is distributed/obtained and played, exemplified by the way iTunes changed music and Tivo changed TV.
  • Cost reductions related to content delivery, such as not having to print film or other packaged media, or not having to drive to the video store.

A critical enabler in this change is the mechanism by which devices that create, hold, playback or display this content are connected. The High-Definition Multimedia Interface. (HDMI.) is a digital connectivity standard capable of carrying the highest quality, uncompressed high-definition digital video content, up to 8 separate channels of uncompressed digital audio and device command controls all on a single cable.

For consumers, HDMI means a simpler and higher-quality entertainment experience. For CE manufacturers, HDMI means a lower-cost, standardized way of interconnecting their devices that enables them to build differentiated products that deliver the best entertainment experience. For movie studios, HDMI in conjunction with HDCP (High-bandwidth Digital Copy Protection) represents a way to expand topline growth by bringing the theater experience home.a key factor given that less than 20% of their revenue comes from theaters. Enhanced content protection represents another significant benefit for studios. For PC and monitor makers, HDMI is a means of bridging the gap between CE and PC video standards. Finally, for the market as a whole, the flexibility of the standard means that it can evolve to meet market needs, such as peripheral control of all attached devices.

IN THIS WHITE PAPER
IDC examines the transition from analog to digital in the world of digital displays and connected devices and addresses critical implications of that change, particularly regarding connectivity standards. This White Paper examines these issues from the perspective of each player in the digital content value chain and the driving factors of quality, flexibility, ease of use and price. Within this context, we provide an overview of the HDMI (High-Definition Multimedia Interface) interface, which brings together all devices in the high-definition household value chain from set-top boxes and DVD players to flat-panel televisions and today's increasingly media-friendly consumer PCs, and even portable devices such as cameras and camcorders.

SITUATION OVERVIEW
Today's consumers are entranced with the wealth of high-definition content being made available to them and are eagerly snapping up flat-panel LCD and plasma televisions, as well as large rear-projection TVs (RPTVs) in order to view it. According to IDC's research, the worldwide LCD TV market is expected to grow by 41% in 2007 and plasma TVs should enjoy 40% growth. In some cases, purchases are being driven by a preference for thinner form factors. In others, they're driven by the desire for better picture quality or a combination of the two. In all cases, however, the underlying driver is the sweeping transition from analog to digital content. This transition has occurred on a number of highly visible fronts, from playback media (VCRs to DVDs) to TVs (analog to HDTV) to broadcasting (standard to digital). As it has unfolded, the costs associated with digital content delivery both underlying semiconductors and the devices themselves have predictably come down while their functionality and performance has steadily risen.

As a result of these developments, consumers have access to an entertainment experience that is both more stimulating and more simplified than was previously available. One of the promises of the digital revolution is more intelligent consumer electronics devices and systems that can automatically configure themselves, correct errors and free the user from having to manage these new technologies. Sadly, up until now, this promise has gone unfulfilled. HDMI delivers the framework for enabling this, not only by drastically simplifying cabling, but also by delivering the potential for system wide intelligence (such as allowing the use a single remote control to integrate multiple devices into a unified system for "one touch playback" and other functions). As discussed below, these capabilities of HDMI can make the experience of simultaneously using multiple digital entertainment devices much easier, while at the same time delivering the cost benefits that come from having a standardized method of connecting products digitally.


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