EP 1554877 A2 20050720 - ADAPTIVE AND PROGRESSIVE AUDIO STREAM DESCRAMBLING
Title (en)
ADAPTIVE AND PROGRESSIVE AUDIO STREAM DESCRAMBLING
Title (de)
ADAPTIVE UND PROGRESSIVE ENTSCHLÜSSELUNG EINES AUDIOSTROMS
Title (fr)
DESEMBROUILLAGE ADAPTATIF ET PROGRESSIF DE FLUX AUDIO
Publication
Application
Priority
- FR 0350098 W 20031021
- FR 0213090 A 20021021
Abstract (en)
[origin: FR2846178A1] The digital distribution method scrambles the original audio file, transmits the scrambled file and uses the audio player to descramble the audio file to provide audio output from the player. The reconstruction of the original file is adaptive and progressive, and is based on a digital profile of the authorized user, part of which has been previously transmitted to the user's player.
IPC 1-7
IPC 8 full level
H04N 7/167 (2011.01)
CPC (source: EP US)
H04N 7/1675 (2013.01 - EP US); H04N 21/233 (2013.01 - EP US); H04N 21/23476 (2013.01 - EP US); H04N 21/25808 (2013.01 - EP US); H04N 21/439 (2013.01 - EP US); H04N 21/631 (2013.01 - EP US); H04N 21/8106 (2013.01 - EP US)
Citation (search report)
See references of WO 2004039075A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2846178 A1 20040423; FR 2846178 B1 20050311; AU 2003292363 A1 20040513; EP 1554877 A2 20050720; US 2006167682 A1 20060727; WO 2004039075 A2 20040506; WO 2004039075 A3 20040708
DOCDB simple family (application)
FR 0213090 A 20021021; AU 2003292363 A 20031021; EP 03767935 A 20031021; FR 0350098 W 20031021; US 53059405 A 20050519