The present invention relates to steganographically hiding messages in media signals such as video and audio signals. In one implementation, a method of decoding an encoded media signal to extract a plural-bit auxiliary signal therefrom is provided. The media signal includes a plurality of intervals,...http://www.google.co.uk/patents/US8055012?utm_source=gb-gplus-sharePatent US8055012 - Hiding and detecting messages in media signals
