STEGANOGRAPHIC METHODS AND APPARATUSES

摘要

An identification code signal is impressed on a carrier to be identified (su ch as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned and the carrier thereby identified. The method and apparatus are characterized by robustness despite degradation of the encoded carrier, and by holographic permeation of the identification signal throughout the carrier. An exemplary embodiment is a processor that embeds the identifi cation signal onto a carrier signal in real time.