Monday January 4, 2010 – Stewart Wolpin
While CES will be replete with gaudy 3D HDTV and 3D Blu-ray demonstrations, likely complete with Avatar and Up! clips, a far more consequential innovation will be purposefully well-hidden – wireless HDMI.
Losing the annoying trailing HDMI cable connecting a consumer's A/V stack to their wall-mounted HDTV is an interior decorator's dream, and so a wireless solution is likely to prove far more popular in the real world than 3D.
Unfortunately, there's more than one way to skin this particular cable cat: Wireless HD (WiHD), Wireless Home Digital Interface (WHDI) and WiGig. A handful of companies are backing multiple consortiums: Hitachi, LG, Samsung, Sharp and Sony are all listed as supporters for both WiHD and WHDI, for instance; LG, Samsung and Panasonic are supporters of all three. Chip makers also are doubling up; Broadcom and Intel both are supporters of WiHD and WiGig.
While all three consortiums seek to provide a wireless uncompressed 1080p HDMI connection, each uses slightly different technologies and envisions slightly different usage cases.
WiHD has the simplest mission – provide a wireless HDMI replacement over the recently unlicensed 60 GHz band.
WiGig also operates in the 60 GHz band, but is a more multi-purpose and interoperable standard. WiGig is an extension of standard 802.11 WiFi with complete backward compatibility, the goal to provide a higher bandwidth – 7 gbps, 10 times faster than 802.11n – wireless connection for high-bandwidth functions such as transferring HD video from a camera to a PC.
Both WiHD and WiGig are short-range (10 meter) same-room technologies. Neither is strictly line-of-sight; if you stack your A/V gear underneath or next to your HDTV, the wireless stream will bounce off nearby walls to your HDTV to complete the wireless circuit. Implementation in larger rooms, therefore, could be challenging.
WHDI is a slightly different wireless animal; it aims to connect all devices to any display in your home. WHDI operates in the more flexible 5 GHz band (just like 802.11n), so it does not require line-of-sight and has an up-to 30-meter range, expanding equipment placement flexibility to multiple rooms.
Choosing Sides
At CEDIA a few months back, three HDTV makers – Sony, LG and Panasonic – all exhibited WiHD-enabled HDTVs, but none of these models are widely available.
But next week, several HDTV makers will unveil a slew of sets endowed with WHDI; most of these models will require the purchase of a separate wireless kit consisting of a wireless dongle for the TV and a transceiver STB, likely priced below $400.
The WiGig wireless HDMI specification isn't due until the end of 2010 at the earliest, and the first WiGig-enabled products of any kind likely won't be in stores until 2011.
There's no question consumers will find losing that dangling HDMI cable compelling. Even though a certain amount of consumer confusion is likely to ensue as WHDI and WiHD and its HDTV partners fire multiple marketing salvos when the latest wireless sets hit the market this spring, practical wireless HDMI is bound to be far more popular than the flashier 3D.