Method and apparatus for watermarking with no perceptible trace

A watermark in the form of an added message is attached to a digital recording so that a significant content of the recording is completely unchanged by the process in the sense that any reader commonly used for such recording will extract from the recording exactly what would have been extracted in...

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Bibliographische Detailangaben
Hauptverfasser:	TRESSER CHARLES P, JAMESON DAVID H, WU CHAI W, WINDGRAD SHMUEL, ABRAMS STEVEN R
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BASIC ELECTRONIC CIRCUITRY CALCULATING CODE CONVERSION IN GENERAL CODING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DECODING DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A watermark in the form of an added message is attached to a digital recording so that a significant content of the recording is completely unchanged by the process in the sense that any reader commonly used for such recording will extract from the recording exactly what would have been extracted in the case the added message had not been attached. This is done by hiding the added message in the error correcting code (ECC) for the significant content of the recording.