Media content (e.g., audio or visual) can be steganographically encoded for a variety of purposes. One such purpose relates to tracing rendered media content back to a particular time and place. For example, one claim recites a method including: receiving data representing media content, the media content...http://www.google.com/patents/US7724919?utm_source=gb-gplus-sharePatent US7724919 - Methods and systems for steganographic processing
