A data extracting circuit extracts data much more accurately at a much higher response speed. A clock transfer section propagates an input clock signal through unit delay devices thereof. An edge detecting section locates an edge of the clock signal, which edge is being propagated through the clock transfer...http://www.google.com.au/patents/US6970521?utm_source=gb-gplus-sharePatent US6970521 - Circuit and system for extracting data
