EP 2062254 B1 20120613 - STEGANOGRAPHY IN DIGITAL SIGNAL ENCODERS
Title (en)
STEGANOGRAPHY IN DIGITAL SIGNAL ENCODERS
Title (de)
STEGANOGRAPHIE IN DIGITALEN SIGNAL-CODIERERN
Title (fr)
STÉGANOGRAPHIE DANS DES CODEURS DE SIGNAUX NUMÉRIQUES
Publication
Application
Priority
- EP 2007007548 W 20070829
- DE 102006044181 A 20060915
- DE 102007007627 A 20070216
Abstract (en)
[origin: WO2008031498A1] In a method for embedding steganographic information into the signal information of a signal encoder, a solution is to be created, which enables steganographic information being embedded into the signal information of a signal encoder such that a reduction of the voice quality is largely avoided. This is achieved by means of providing data information, particularly voice information, selecting steganographic information from a quantity of steganographic information, generating a code word from a code book provided by means of the signal encoder on the basis of the code elements forming the code book such that with the use of the code word generated within the scope of a transmission standard associated with the code book the data information is encoded into signal information containing the code word and/or making reference to the code word; and by the code word generated having an additional feature that can be calculated on the basis of the code elements forming the code word, wherein the additional feature represents the steganographic information.
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/018 (2013.01); G10L 19/12 (2006.01); H04K 1/00 (2006.01)
CPC (source: EP US)
G10L 19/018 (2013.01 - EP US); G10L 19/12 (2013.01 - EP US); H04K 1/00 (2013.01 - EP US); G10L 2019/0007 (2013.01 - EP)
Citation (examination)
- JP H11272299 A 19991008 - TOYO COMMUNICATION EQUIP
- MUNETOSHI IWAKIRI ET AL: "Embedding a text into conjugate strusture algebraic code excited linear prediction audio codes", COMPUTER SYSTEM SYMPOSIUM, INFORMATION PROCESSING SOCIETY OF JAPAN, JP, vol. 39, no. 3, 1 September 1998 (1998-09-01), pages 2623 - 2630, XP007916951
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008031498 A1 20080320; CY 1113155 T1 20160413; DE 102007007627 A1 20080327; DK 2062254 T3 20120820; EP 2062254 A1 20090527; EP 2062254 B1 20120613; EP 2385521 A1 20111109; ES 2389012 T3 20121022; PL 2062254 T3 20121130; PT 2062254 E 20120919; SI 2062254 T1 20121030; US 2011131047 A1 20110602; US 8412519 B2 20130402
DOCDB simple family (application)
EP 2007007548 W 20070829; CY 121100830 T 20120912; DE 102007007627 A 20070216; DK 07801969 T 20070829; EP 07801969 A 20070829; EP 11006299 A 20070829; ES 07801969 T 20070829; PL 07801969 T 20070829; PT 07801969 T 20070829; SI 200731014 T 20070829; US 44120907 A 20070829