Global Patent Index - EP 1062585 A1

EP 1062585 A1 20001227 - METHOD AND APPARATUS FOR CAMOUFLAGING DATA

Title (en)

METHOD AND APPARATUS FOR CAMOUFLAGING DATA

Title (de)

VERFAHREN UND GERÄT ZUM KAMOUFLIEREN VON DATEN

Title (fr)

PROCEDE ET APPAREIL POUR CAMOUFLER LES DONNEES

Publication

EP 1062585 A1 20001227 (EN)

Application

EP 98915102 A 19980318

Priority

SG 9800023 W 19980318

Abstract (en)

[origin: WO9948006A1] A method and apparatus for encoding is disclosed. Primary data such as a work in which copyright subsists, is utilized in a steganographic process to encode secondary data, such as ownership or copyright information. The primary data contains a plurality of addressable first data elements and the secondary data contains a plurality of second data elements. The method includes searching for first data elements which match the contents of the second data elements. When a matching first data element is found a key element including the address of the matching first data element is generated. In one embodiment the method may be used for camouflaging a text message such as copyright information in primary data, such as audio, an image or video data. In another embodiment the method may be used to encrypt data for secure transmission of messages. Complementary decoding methods and apparatus are also disclosed.

IPC 1-7

G06F 12/14

IPC 8 full level

G06F 12/14 (2006.01); G06F 21/00 (2006.01); G06F 21/24 (2006.01); G09C 5/00 (2006.01); H04N 1/32 (2006.01); H04N 1/40 (2006.01); H04N 7/26 (2006.01); G06F 1/00 (2006.01)

CPC (source: EP US)

G06F 21/10 (2013.01 - EP US); G06F 21/16 (2013.01 - EP); H04N 1/32101 (2013.01 - EP); H04N 1/32203 (2013.01 - EP); H04N 19/98 (2014.11 - EP); H04N 2201/3233 (2013.01 - EP); H04N 2201/3243 (2013.01 - EP); H04N 2201/3269 (2013.01 - EP); H04N 2201/3274 (2013.01 - EP)

Citation (search report)

See references of WO 9948006A1

Designated contracting state (EPC)

GB

DOCDB simple family (publication)

WO 9948006 A1 19990923; AU 6936398 A 19991011; CA 2319601 A1 19990923; EP 1062585 A1 20001227; JP 2002507771 A 20020312

DOCDB simple family (application)

SG 9800023 W 19980318; AU 6936398 A 19980318; CA 2319601 A 19980318; EP 98915102 A 19980318; JP 2000537139 A 19980318