Global Patent Index - EP 2539891 B8

EP 2539891 B8 20140423 - Watermark signal provider and method for providing a watermark signal

Title (en)

Watermark signal provider and method for providing a watermark signal

Title (de)

Wasserzeichensignalversorger und Verfahren zur Bereitstellung eines Wasserzeichensignals

Title (fr)

Fournisseur de signal de filigrane et procédé de fourniture de signal de filigrane

Publication

EP 2539891 B8 20140423 (EN)

Application

EP 11705544 A 20110223

Priority

  • EP 10154948 A 20100226
  • EP 2011052694 W 20110223
  • EP 11705544 A 20110223

Abstract (en)

[origin: EP2362382A1] A watermark signal provider for providing a watermark signal in dependence on a time frequency-domain representation of watermark data, in which the time-frequency-domain representation comprises values associated to frequency subbands and bit intervals, the watermark signal provider comprises a time-frequency-domain waveform provider to provide time-domain waveforms for a plurality of frequency subbands, based on the time-frequency-domain representation of the watermark data. The time-frequency-domain waveform provider is configured to map a given value of the time-frequency-domain representation onto a bit shaping function. A temporal extension of the bit shaping function is longer than the bit interval associated to the given value of the time-frequency-domain representation, such that there is a temporal overlap between bit shaped functions provided for temporally subsequent values of the time-frequency-domain representation of the same frequency subband. A time-domain waveform of a given frequency subband contains a plurality of bit shaped functions provided for temporally subsequent values of the time-frequency-domain representation of the same frequency band. The water mark signal provider further comprises a time-domain waveform combiner, to combine the provided time-domain waveforms for the plurality of frequencies of the time-frequency-domain provider to derive the watermark signal.

IPC 8 full level

G10L 19/018 (2013.01)

CPC (source: EP KR US)

G10L 19/00 (2013.01 - KR); G10L 19/018 (2013.01 - EP US)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2362382 A1 20110831; AU 2011219796 A1 20120927; AU 2011219796 B2 20140821; BR 112012021533 A2 20170704; BR 112012021533 B1 20201110; CA 2790973 A1 20110901; CA 2790973 C 20160531; CN 102859585 A 20130102; CN 102859585 B 20140702; EP 2539891 A1 20130102; EP 2539891 B1 20140115; EP 2539891 B8 20140423; ES 2452920 T3 20140403; HK 1180445 A1 20131018; JP 2013520696 A 20130606; JP 5426781 B2 20140226; KR 101401174 B1 20140529; KR 20120128149 A 20121126; MX 2012009788 A 20121123; MY 161513 A 20170428; PL 2539891 T3 20140731; RU 2012140871 A 20140410; SG 183486 A1 20121030; US 2013261778 A1 20131003; US 9214159 B2 20151215; WO 2011104283 A1 20110901; ZA 201206357 B 20130529

DOCDB simple family (application)

EP 10154948 A 20100226; AU 2011219796 A 20110223; BR 112012021533 A 20110223; CA 2790973 A 20110223; CN 201180020584 A 20110223; EP 11705544 A 20110223; EP 2011052694 W 20110223; ES 11705544 T 20110223; HK 13107566 A 20130627; JP 2012554339 A 20110223; KR 20127025152 A 20110223; MX 2012009788 A 20110223; MY PI2012003826 A 20110223; PL 11705544 T 20110223; RU 2012140871 A 20110223; SG 2012062923 A 20110223; US 201213593999 A 20120824; ZA 201206357 A 20120823