Global Patent Index - EP 1790153 A2

EP 1790153 A2 20070530 - METHOD AND DEVICE FOR INSERTING DATA IN FIXED OR ANIMATED IMAGES

Title (en)

METHOD AND DEVICE FOR INSERTING DATA IN FIXED OR ANIMATED IMAGES

Title (de)

VERFAHREN UND VORRICHTUNG ZUR DATENEINGABE IN FESTE ODER ANIMIERTE BILDER

Title (fr)

PROCEDE ET DISPOSITIF D'INSERTION D'INFORMATIONS DANS DES IMAGES FIXES OU ANIMEES

Publication

EP 1790153 A2 20070530 (FR)

Application

EP 05805568 A 20050906

Priority

  • FR 2005002213 W 20050906
  • FR 0409521 A 20040908

Abstract (en)

[origin: WO2006030101A2] The invention concerns a method for inserting data comprising a predetermined number of symbols, in a sequence of images of at least one image comprising a predetermined number of lines including each a predetermined number of pixels, said method consisting in: generating a set of functions presenting a comb-like spectrum intercalated in the spectrum of the image sequence, and including a respective function for each symbol of the data to be inserted; offsetting each function of the set of functions by a value representing a respective symbol of the data to be inserted; superimposing the offset functions; and combining the pixels of the sequence of images with the result obtained by the superimposition of the offset functions.

IPC 8 full level

H04N 7/24 (2006.01)

CPC (source: EP US)

H04N 21/23892 (2013.01 - EP US)

Citation (search report)

See references of WO 2006030101A2

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 NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

FR 2875090 A1 20060310; FR 2875090 B1 20061201; CN 100584005 C 20100120; CN 101124826 A 20080213; EP 1790153 A2 20070530; JP 2008512913 A 20080424; JP 4444337 B2 20100331; US 2008137905 A1 20080612; WO 2006030101 A2 20060323; WO 2006030101 A3 20071004

DOCDB simple family (application)

FR 0409521 A 20040908; CN 200580030122 A 20050906; EP 05805568 A 20050906; FR 2005002213 W 20050906; JP 2007530738 A 20050906; US 66229005 A 20050906