Silicon Image is an important member of the HDMI alliance. They are here to promote two technologies; MHL, which is a solution for video output on portable devices, and Wireless HD. MHL works via the micro USB, and a Silicon Image chip will render videos to HDMI displays that supply MHL. This also means that your device can be charged at the same time. Some recently released phones, like HTC Sensation and Samsung Galaxy S2 are both equipped with MHL. However, the corresponding displays are still in the production line.
Wireless HD is broadcasted on 60 GHz at a max distance of 10 meters. Alienware 17" laptop is already equipped with Wireless HD, and Vizio is coming out with a peripheral for $175 USD. One catch is that one transmitter is paired with only one receiver due to HDCP copyrights. Wilreless HD is sufficient for most gaming uses.