Global Patent Index - EP 1062585 A1

EP 1062585 A1 2000-12-27 - 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 (EN)

Application

EP 98915102 A

Priority

SG 9800023 W

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 (main, further and additional classification)

G06F 12/14

IPC 8 full level (invention and additional information)

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 (invention and additional information)

H04N 19/98 (2014.11); G06F 21/10 (2013.01); H04N 1/32101 (2013.01); H04N 1/32203 (2013.01); G06F 2221/0737 (2013.01); H04N 2201/3233 (2013.01); H04N 2201/3243 (2013.01); H04N 2201/3269 (2013.01); H04N 2201/3274 (2013.01)

Citation (search report)

See references of WO 9948006A1

Designated contracting state (EPC)

GB

EPO simple patent family

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

INPADOC legal status


2002-04-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011002

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001017

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): GB