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Stream High-Def Content Wirelessly at Home – New Consortium Says It Will Happen in 2009

There’s big and unexpected news out today. AMIMON, along with Motorola, Hitachi, Sharp, Samsung and Sony have formed a consortium to develop a new standard for streaming multimedia content wirelessly across multiple rooms. The new standard will be based on AMIMON’s Wireless Home Digital Interface (WHDI) technology, and is expected to be embedded in products at retail in 2009. This is far sooner than many folks (myself included) expected to have an effective wireless HD solution.

I sat down with Motorola’s Paul Moroney last week to discuss the new consortium, also being called a special interest group, and learned quite a bit of interest. Because Motorola’s been an AMIMON investor since early in 2007, Motorola engineers have been studying the WHDI technology from the inside. In the beginning Moroney says he and others were convinced that what AMIMON claimed it could do was too good to be true. In very basic terms, WHDI prioritizes video components according to their importance. There are the most significant bits (MSBs) and the least significant bits (LSBs) in a video pixel. The MSBs get more error protection when they are encoded than the LSBs, and they are also transmitted on frequency bands with less noise.

AMIMON’s method, called Joint Source-Channel Coding (JSCC), allows WHDI to do something no other technology on the market today does: wirelessly deliver uncompressed HD video. And according to Moroney, it works incredibly well.

Here are a few key specs on AMIMON’s WHDI solution:

  • Designed for uncompressed HDTV video up to 1080p
  • Operates on the unlicensed 5Ghz frequency band
  • Uses four transmit antennas and 20-40MHz bandwidth

The WHDI standard is expected to be completed this year.

2 Responses

  1. […] Stream High-Def Content Wirelessly at Home: Media Experiences 2 Go […]

  2. Absolutely, you can prioritize the low-frequency components of the video higher than the higher-frequency components. Doing that on purpose is called requantization in the compressed domain…

    Since there really isn’t any uncompressed HD video out there, couldn’t we just leave the video compressed and transport it wirelessly that way? HDTV antenna signals are MPEG-2, BD’s are MPEG-2 or h.264 or WMV, cable signals are MPEG-2, satellite are MPEG-2 or h.264, etc. Of course that would mean developing every box with yet another connector on it, so that you could output the compressed signal, and require the TV to handle all the different codec types etc. Probably not workable at this point. Too bad this wasn’t an option over DVI/HDMI…

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