Tuesday, January 5, 2010

Wireless Home Digital Interface (WHDI) Shows Momentum at CES

WHDI, the consortium of leading CE manufacturers managing and licensing Wireless Home Digital Interface (WHDI) technology, announced several new WHDI Contributors: Haier, Maxim, Mitsubishi Electric and Toshiba. Additionally, the following companies have joined as WHDI Adopters: AmTRAN, Domo Technologies, Elmo, Gemtek, Gospell Smarthome Electronics, Hosiden, Murata, QMI, Seamon Science International, TDK, and Zinwell. These companies are in addition to the original WHDI Promoters: Amimon, Hitachi, LG Electronics, Motorola, Samsung, Sharp and Sony.

The WHDI standard delivers the wireless, multi-room distribution of high-quality HD video (full 1080p/60Hz HD with Deep Color at a distance of 100 feet and through walls), enabling consumers to build a wireless HD network connecting HD sources (STBs, Blu-ray players, PCs, mobile devices, game players, etc.) to TVs around the home. The WHDI standard ensures that by purchasing products with the WHDI logo consumers can easily connect devices from different manufacturers into one network to access all of their a/v content and games.

WHDI and 802.11n use very similar technology in the 5Ghz frequency range, making it possible to build a single chip integrated WHDI/802.11n (WiFi) solution. WHDI employs spectrum management capabilities to avoid mutual interferences with other transmissions in the 5GHz unlicensed band. WHDI makes use of a number technologies to avoid collisions with other devices and to maximize the available wireless bandwidth, including: Automatic Frequency Selection (AFS), whereby WHDI will automatically switch to an unused channel in the case of interference. WHDI also supports DFS, for more available channels, and Transmit Power Control -- allowing re-use of channel frequency.


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