In accordance with one aspect of the present invention, an interactive data identification and recall system is provided which avoids the need to encode additional data into the real-time media broadcast stream/system. In addition, the system can eliminate the need to store the entire show on an end...http://www.google.com/patents/US20020099800?utm_source=gb-gplus-sharePatent US20020099800 - Data mark and recall system and method for a data stream
