公开(公告)号：EP1877958A2

公开(公告)日：2008-01-16

申请号：EP06758577.8

申请日：2006-04-25

申请人： Verance Corporation

发明人： TEHRANCHI, Babak ,  WINOGRAD, Joseph, M. ,  PETROVIC, Rade

IPC分类号： G06K9/00 ,  H04L9/00 ,  G06K9/36 ,  G09C5/00 ,  H04K1/00

CPC分类号： H04N1/32149 ,  G06T1/0071 ,  G10L19/018 ,  H04L9/002 ,  H04L9/088 ,  H04L2209/608 ,  H04N1/00037 ,  H04N1/00872 ,  H04N1/00875 ,  H04N1/32144 ,  H04N1/32299 ,  H04N1/32304 ,  H04N1/3232 ,  H04N1/32331 ,  H04N2201/323

摘要： Methods for adapting the operation of a system in response to the detection of embedded watermarks from a digital host content are provided. A digital host content is received and examined for the presence of watermarks. In response to the detection of embedded watermarks and in accordance with the value, type, density or spacing of the detected watermarks, one or more system reactions may take place. These reactions include conditionally allowing the system to resume its normal operation, prohibiting the system from resuming its normal operation, degrading the quality of the digital host content or changing the security status of the digital host content. In response to the extraction of weak watermarks that do not meet the desired system requirements, the extraction operation may be modified or extended to enable the detection of strong watermarks.

公开(公告)号：EP1552454A2

公开(公告)日：2005-07-13

申请号：EP03774648.4

申请日：2003-10-07

申请人： Verance Corporation

发明人： PETROVIC, Rade ,  TEHRANCHI, Babak ,  JEMILI, Kanaan ,  WINOGRAD, Joseph, M. ,  ANGELICO, Dean

IPC分类号： G06F17/60

CPC分类号： H04N7/17318 ,  H04H20/14 ,  H04H20/31 ,  H04H2201/50 ,  H04N21/258 ,  H04N21/4394 ,  H04N21/812 ,  H04N21/8352 ,  H04N21/8358

摘要： Systems and methods are provided for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within the transmissions. Processing and reporting of such data is provided in various ways to serve a variety of business needs. Methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data are also disclosed. Various information products and services based on such monitoring systems are proposed.

公开(公告)号：EP1431961A3

公开(公告)日：2005-03-16

申请号：EP04002048.9

申请日：1996-12-05

申请人： Verance Corporation

发明人： Lee, Chong U. ,  Moallemi, Kamran ,  Hinderling, Jurg

IPC分类号： H04L5/00 ,  H04B1/66 ,  G10L19/02

CPC分类号： G10L19/018 ,  H04B2201/70715

摘要： Auxialiary data subband samples representing an auxiliary data signal (315) are transported in a subband-coded compressed digital audio signal without decompressing the data. A pre-existing packetized data stream (305) is provided to an input of an encoder (310). Subband audio samples (406) are extracted from the packet stream and normalized (408). The data to be transported modulates data carrier subbands (SPD0, ---SPD-1, including a pseudo-noise (PN) spread spectrum signal, each subband of which has a bandwidth corresponding to those of the digital audio signal, The modulated data carrier sequence is combined with the audio subband samples (SS1, SS2---SSN-1) to form a combined signal (452), then muLtiplexed (460) into pre-existing packet stream (407). In the decoder (368), the combined signal is demodulated to recover the auxiliary data signal (672). The recovered auxiliary data signal is carried substantially inaudibly in the audio signal and is spectrally shaped according to the audio signal to enhance concealment.

公开(公告)号：EP0873614B1

公开(公告)日：2004-04-28

申请号：EP96942134.6

申请日：1996-12-05

申请人： Verance Corporation

发明人： LEE, Chong, U. ,  MOALLEMI, Kamran ,  HINDERLING, Jurg

IPC分类号： H04L5/00 ,  H04B1/66

CPC分类号： G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04B2201/70715

摘要： Auxialiary data subband samples representing an auxiliary data signal (315) are transported in a subband-coded compressed digital audio signal without decompressing the data. A pre-existing packetized data stream (305) is provided to an input of an encoder (310). Subband audio samples (406) are extracted from the packet stream and normalized (408). The data to be transported modulates data carrier subbands (SPD0, SPD1, ---SPDN-1) including a pseudo-noise (PN) spread spectrum signal, each subband of which has a bandwidth corresponding to those of the digital audio signal. The modulated data carrier sequence is combined with the audio subband samples (SS1, SS2---SSN-1) to form a combined signal (452), then multiplexed (460) into pre-existing packet stream (407). In the decoder (368), the combined signal is demodulated to recover the auxiliary data signal (672). The recovered auxiliary data signal is carried substantially inaudibly in the audio signal and is spectrally shaped according to the audio signal to enhance concealment.