http://blog.clove.co.uk/2012/11/02/what-is-slimport/
http://www.slimportconnect.com/
http://www.analogix.com/en/products/slimport/overview

Developed by Analogix to provide easy and convenient connection of devices equipped with micoUSB sockets to external displays, SlimPort is based on the VESA DisplayPort standard.

However Analogix has cleverly combined functionality which would have traditionally used several cables into one which they call C-Wire. This enables manufacturers to incorporate SlimPort into existing microUSB connectors. With the result that display output, data and charging can be dealt with by one single connector.

SlimPort has been designed to use virtually zero power, meaning that it will drain little power from your portable device; so you can view content on a large screen with the reassurance that you are not using any additional battery power, compared to normal viewing.