Wireless HDMI is a colloquial term for wireless high-definition audio and video signals connectivity on consumer electronics products.
Currently, most HD wireless transmission technologies use unlicensed 5 GHz, 60 GHz or 190 GHz radio frequencies and include:
various proprietary protocols for wireless transmission (LG "Wireless 1080p", Philips "Wireless HDTV Link", Sony "Bravia Wireless Link", Asus "Wireless Display Connectivity", etc.);
there are several technologies attempting to become the industry standards like WirelessHD, Wireless Home Digital Interface and the Wireless Gigabit Alliance;
proprietary video compression schemes that work over 802.11n and similar wireless interfaces;
Asus WAVI (Wireless Audio Video Interaction) wireless HDMI use 4 x 5 MIMO-channels with Two-Way Wireless USB Control.
Wireless HDTV (aka WiDi) availability is currently an ongoing development. In 2010, Toshiba began marketing the first WiDi device.
