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AR021303A1 - Insercion y extraccion de datos suplementarios en una senal de informacion - Google Patents

Insercion y extraccion de datos suplementarios en una senal de informacion

Info

Publication number
AR021303A1
AR021303A1 ARP990105845A ARP990105845A AR021303A1 AR 021303 A1 AR021303 A1 AR 021303A1 AR P990105845 A ARP990105845 A AR P990105845A AR P990105845 A ARP990105845 A AR P990105845A AR 021303 A1 AR021303 A1 AR 021303A1
Authority
AR
Argentina
Prior art keywords
supplementary data
sequence
extraction
channel
bit
Prior art date
Application number
ARP990105845A
Other languages
English (en)
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of AR021303A1 publication Critical patent/AR021303A1/es

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
    • G11B20/00891—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm embedded in audio data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
    • G11B2020/00065—Sigma-delta audio encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Television Systems (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

Resumiendo, se revelan un método y una disposicion para insertar datos suplementarios en una senal de informacion tal como una senal de audio sigma-deltamodulada. La senal codificada incluye dos o más canales. Por ejemplo un flujo de bit de canal izquierdo (z1) y un flujo de bit de canal derecho (z2). Losmismos datos suplementarios (w) son ubicados en posiciones de bit predeterminadas correspondientes, por ejemplo cada M* posicion de bit de los flujos de bit.Esto permite la deteccion y extraccion de los datos suplementarios sin la necesidad de ubicar un patron de sinc de senal. En el extremo receptor, una secuenciade M* bits del primer canal es comparada con la correspondiente secuencia de M* bits del segundo canal. Si son idénticas, la secuencia es una secuencia dedatos suplementarios candidata. Esto se efectua para distintas posiciones de secuencia (m) hasta que se han encontrado los datos suplementarios.
ARP990105845A 1998-11-17 1999-11-17 Insercion y extraccion de datos suplementarios en una senal de informacion AR021303A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98203899 1998-11-17

Publications (1)

Publication Number Publication Date
AR021303A1 true AR021303A1 (es) 2002-07-03

Family

ID=8234356

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990105845A AR021303A1 (es) 1998-11-17 1999-11-17 Insercion y extraccion de datos suplementarios en una senal de informacion

Country Status (15)

Country Link
US (2) US6574349B1 (es)
EP (1) EP1050045B1 (es)
JP (1) JP2002530707A (es)
KR (1) KR100586872B1 (es)
CN (1) CN1155260C (es)
AR (1) AR021303A1 (es)
AT (1) ATE319163T1 (es)
AU (1) AU1270300A (es)
BR (1) BR9907017A (es)
DE (1) DE69930143T2 (es)
HU (1) HUP0101093A3 (es)
IL (1) IL137311A0 (es)
PL (1) PL342033A1 (es)
RU (1) RU2249260C2 (es)
WO (1) WO2000030101A1 (es)

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US6944298B1 (en) * 1993-11-18 2005-09-13 Digimare Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US6516079B1 (en) * 2000-02-14 2003-02-04 Digimarc Corporation Digital watermark screening and detecting strategies
JP4314745B2 (ja) 1999-04-16 2009-08-19 ソニー株式会社 データ処理システム、データ処理方法及びデータ処理装置
US6947893B1 (en) * 1999-11-19 2005-09-20 Nippon Telegraph & Telephone Corporation Acoustic signal transmission with insertion signal for machine control
JP2002043945A (ja) 2000-07-19 2002-02-08 Sony Corp ディジタル信号符号化装置及び方法、ディジタル信号復号装置及び方法、並びにディジタル信号伝送システム
RU2285352C2 (ru) * 2000-11-08 2006-10-10 Конинклейке Филипс Электроникс Н.В. Способ и устройство для передачи команды
US7203335B2 (en) * 2001-08-07 2007-04-10 Gabriel Fielding System and method for extracting a watermark signal in a digital image sequence
US6696989B2 (en) 2001-09-17 2004-02-24 Matsushita Electric Industrial Co., Ltd. Data-update apparatus, reproduction apparatus, data-addition apparatus, data-detection apparatus and data-removal apparatus
US20050160040A1 (en) * 2002-04-19 2005-07-21 Van Rijnsoever Bartholomeus J. Conditional access system and apparatus
DE60327629D1 (de) * 2002-06-12 2009-06-25 Irdeto Eindhoven B V Vorrichtung und verfahren mit bedingtem zugang
US7409002B2 (en) * 2003-09-30 2008-08-05 Intel Corporation Signal modulation
US7451093B2 (en) * 2004-04-29 2008-11-11 Srs Labs, Inc. Systems and methods of remotely enabling sound enhancement techniques
EP1898396A1 (en) * 2006-09-07 2008-03-12 Deutsche Thomson-Brandt Gmbh Method and apparatus for encoding/decoding symbols carrying payload data for watermarking of an audio or video signal
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
US7729163B2 (en) 2008-03-26 2010-06-01 Micron Technology, Inc. Phase change memory
US8442466B2 (en) * 2009-06-26 2013-05-14 Qualcomm Incorporated FM transmitter with a delta-sigma modulator and a phase-locked loop
RU2492579C2 (ru) * 2010-09-14 2013-09-10 Общество с ограниченной ответственностью "Цифрасофт" Устройство вставки цифровой информации в аудиосигнал
CN102592597B (zh) 2011-01-17 2014-08-13 鸿富锦精密工业（深圳）有限公司 电子装置及音频数据的版权保护方法
US20120254454A1 (en) * 2011-03-29 2012-10-04 On24, Inc. Image-based synchronization system and method
US9164724B2 (en) 2011-08-26 2015-10-20 Dts Llc Audio adjustment system
RU2554507C2 (ru) * 2013-06-11 2015-06-27 Общество с ограниченной ответственностью "Цифрософт" Способ и система передачи цифровой информации в канале радиовещания

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JPS5255301A (en) * 1975-10-30 1977-05-06 Sony Corp Stereo demodulation circuit
GB8330885D0 (en) * 1983-11-18 1983-12-29 British Telecomm Data transmission
GB8826927D0 (en) * 1988-11-17 1988-12-21 British Broadcasting Corp Aligning two audio signals in time for editing
FR2655439B1 (fr) * 1989-12-01 1992-05-15 Bertin & Cie Procede et dispositif de comparaison de deux signaux analogiques variables.
GB9203911D0 (en) * 1992-02-24 1992-04-08 Emi Plc Thorn Alignment corresponding segments of a digital signal and a digital reference signal
FI90934C (fi) * 1992-04-13 1994-04-11 Salon Televisiotehdas Oy Menetelmä digitaalisen informaation sisällyttämiseksi audiosignaaliin ennen sen kanavakoodausta
RU2025791C1 (ru) * 1992-08-19 1994-12-30 Валентин Аркадьевич Васильев Способ поиска записанной видеоинформации на магнитном носителе и устройство для его осуществления
GB9500285D0 (en) * 1995-01-07 1995-03-01 Central Research Lab Ltd A method of labelling an audio signal
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Also Published As

Publication number Publication date
CN1288564A (zh) 2001-03-21
ATE319163T1 (de) 2006-03-15
AU1270300A (en) 2000-06-05
KR100586872B1 (ko) 2006-06-07
US20030185418A1 (en) 2003-10-02
WO2000030101A1 (en) 2000-05-25
CN1155260C (zh) 2004-06-23
US6574349B1 (en) 2003-06-03
HUP0101093A2 (hu) 2001-07-30
BR9907017A (pt) 2000-10-17
EP1050045B1 (en) 2006-03-01
PL342033A1 (en) 2001-05-21
HUP0101093A3 (en) 2003-04-28
DE69930143D1 (de) 2006-04-27
EP1050045A1 (en) 2000-11-08
DE69930143T2 (de) 2006-11-16
IL137311A0 (en) 2001-07-24
RU2249260C2 (ru) 2005-03-27
KR20010034181A (ko) 2001-04-25
JP2002530707A (ja) 2002-09-17

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