NL8900934A - Inrichting voor het opnemen van een audiosignaal. - Google Patents

Inrichting voor het opnemen van een audiosignaal. Download PDF

Info

Publication number
NL8900934A
NL8900934A NL8900934A NL8900934A NL8900934A NL 8900934 A NL8900934 A NL 8900934A NL 8900934 A NL8900934 A NL 8900934A NL 8900934 A NL8900934 A NL 8900934A NL 8900934 A NL8900934 A NL 8900934A
Authority
NL
Netherlands
Prior art keywords
signal
input
coupled
output
auxiliary
Prior art date
Application number
NL8900934A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips 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 Philips Nv filed Critical Philips Nv
Priority to NL8900934A priority Critical patent/NL8900934A/nl
Priority to US07/495,017 priority patent/US5083224A/en
Priority to EP90200848A priority patent/EP0392612A1/en
Priority to KR1019900004947A priority patent/KR900017006A/ko
Priority to CN90102070A priority patent/CN1046408A/zh
Priority to JP2094196A priority patent/JPH02292776A/ja
Publication of NL8900934A publication Critical patent/NL8900934A/nl

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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
NL8900934A 1989-04-14 1989-04-14 Inrichting voor het opnemen van een audiosignaal. NL8900934A (nl)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL8900934A NL8900934A (nl) 1989-04-14 1989-04-14 Inrichting voor het opnemen van een audiosignaal.
US07/495,017 US5083224A (en) 1989-04-14 1990-03-15 Apparatus for recording an audio signal with protection against re-recording thereof, and recording apparatus which indicates the presence of such protection
EP90200848A EP0392612A1 (en) 1989-04-14 1990-04-09 Arrangement for recording an audio signal
KR1019900004947A KR900017006A (ko) 1989-04-14 1990-04-11 오디오 신호 기록장치 및 기록 캐리어
CN90102070A CN1046408A (zh) 1989-04-14 1990-04-11 音频信号记录装置
JP2094196A JPH02292776A (ja) 1989-04-14 1990-04-11 音声信号記録装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8900934 1989-04-14
NL8900934A NL8900934A (nl) 1989-04-14 1989-04-14 Inrichting voor het opnemen van een audiosignaal.

Publications (1)

Publication Number Publication Date
NL8900934A true NL8900934A (nl) 1990-11-01

Family

ID=19854474

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8900934A NL8900934A (nl) 1989-04-14 1989-04-14 Inrichting voor het opnemen van een audiosignaal.

Country Status (6)

Country Link
US (1) US5083224A (ko)
EP (1) EP0392612A1 (ko)
JP (1) JPH02292776A (ko)
KR (1) KR900017006A (ko)
CN (1) CN1046408A (ko)
NL (1) NL8900934A (ko)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363250A (en) * 1991-07-31 1994-11-08 U.S. Philips Corporation Prerecorded record carrier
DE4135419A1 (de) * 1991-10-26 1993-04-29 Thomson Brandt Gmbh Speichereinrichtung fuer eine magnetbandkassette
US6301369B2 (en) 1992-07-31 2001-10-09 Digimarc Corporation Image marking to permit later identification
US5721788A (en) * 1992-07-31 1998-02-24 Corbis Corporation Method and system for digital image signatures
US5315448A (en) * 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
US6424725B1 (en) 1996-05-16 2002-07-23 Digimarc Corporation Determining transformations of media signals with embedded code signals
US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals
US6944298B1 (en) * 1993-11-18 2005-09-13 Digimare Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US6122403A (en) 1995-07-27 2000-09-19 Digimarc Corporation Computer system linked by using information in data objects
US6408082B1 (en) 1996-04-25 2002-06-18 Digimarc Corporation Watermark detection using a fourier mellin transform
US7171016B1 (en) 1993-11-18 2007-01-30 Digimarc Corporation Method for monitoring internet dissemination of image, video and/or audio files
US6611607B1 (en) * 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US6516079B1 (en) 2000-02-14 2003-02-04 Digimarc Corporation Digital watermark screening and detecting strategies
US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US6757406B2 (en) 1993-11-18 2004-06-29 Digimarc Corporation Steganographic image processing
US6614914B1 (en) * 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader
US6560349B1 (en) 1994-10-21 2003-05-06 Digimarc Corporation Audio monitoring using steganographic information
US7486799B2 (en) * 1995-05-08 2009-02-03 Digimarc Corporation Methods for monitoring audio and images on the internet
US6411725B1 (en) * 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
US5896255A (en) * 1995-10-02 1999-04-20 Aris Mardirossian, Inc. Magnetic disc cartridge and corresponding system/method for limiting coping of software
US5636096A (en) * 1995-10-02 1997-06-03 Aris Mardirossian, Inc. Magnetic disc cartridge and corresponding system/method for limiting copying of software
US6011765A (en) * 1996-04-12 2000-01-04 Sony Corporation Recording medium having copying protection signals recorded in superposition on main signals
US6381341B1 (en) 1996-05-16 2002-04-30 Digimarc Corporation Watermark encoding method exploiting biases inherent in original signal
NL1005310C2 (nl) * 1997-02-18 1998-08-20 Commanditaire Vennootschap C V Werkwijze voor het tegen kopiëren beveiligen van een audiosignaal.
ES2155230T3 (es) * 1997-08-28 2001-05-01 Sony Dadc Austria Ag Sistema para gestionar el copiado de un disco optico.
JP3248679B2 (ja) * 1997-11-21 2002-01-21 日本ビクター株式会社 ディスク再生装置
EP0955634A1 (en) * 1998-05-04 1999-11-10 Spiro J. Pandelidis High Tech Applications Anti-copying system for audio signals
JPH11328849A (ja) * 1998-05-15 1999-11-30 Sony Corp データ記録装置
US6633654B2 (en) * 2000-06-19 2003-10-14 Digimarc Corporation Perceptual modeling of media signals based on local contrast and directional edges
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
US7177430B2 (en) * 2001-10-31 2007-02-13 Portalplayer, Inc. Digital entroping for digital audio reproductions
GB2390247B (en) 2002-06-28 2006-04-12 Dwight Cavendish Systems Ltd An improved method and apparatus for providing an anti-copy video signal
GB0312985D0 (en) 2003-06-05 2003-07-09 Dwight Cavendish Systems Ltd Digital processing disruption systems
BRPI0413659A (pt) * 2003-08-18 2006-10-24 Koninkl Philips Electronics Nv Método e sistema para impedir cópia de informação digital
US20050271364A1 (en) * 2004-03-26 2005-12-08 Collar Bradley T Method of foiling copy protection for DVDs
GB2419220B (en) 2004-10-13 2009-06-03 Dwight Cavendish Systems Ltd Audio copy protection system
GB0513051D0 (en) 2005-06-27 2005-08-03 Dwight Cavendish Systems Ltd Copy protection method and apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040099A (en) * 1975-07-30 1977-08-02 Cook Laboratories, Inc. Method and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplications
FR2459532B1 (fr) * 1979-06-18 1987-07-31 Quadrivium Tech Avancees Procede pour associer une information auxiliaire a une information principale enregistree et application au controle de la reproduction d'information enregistree
US4404603A (en) * 1980-05-27 1983-09-13 Warren Eugene D Apparatus and method for inspecting magnetic tape recorded material for alterations
GB2104701B (en) * 1981-08-06 1985-06-05 James Bertram King Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)
NL8103834A (nl) * 1981-08-17 1983-03-16 Philips Nv Werkwijze voor het schrijven respektievelijk weergeven van stereofonische informatie in een magnetische registratiedrager, een inrichting voor het uitvoeren van de werkwijze, een magnetische registratiedrager en een versterkerschakeling te gebruiken in een inrichting voor het uitvoeren van de werkwijze.
FR2515403A1 (fr) * 1981-10-28 1983-04-29 Quadrivium Inf Procede d'identification d'un enregistrement sonore et installation de duplication mettant en oeuvre le procede
US4802212A (en) * 1987-06-01 1989-01-31 Samuel R. Freeman Method and device for preventing tape piracy
DE3851724T2 (de) * 1987-07-08 1995-05-04 Matsushita Electric Ind Co Ltd Verfahren und Gerät zum Schutz von Kopiersignalen.
GB8809347D0 (en) * 1988-04-20 1988-05-25 Emi Plc Thorn Apparatus for marking recorded signal

Also Published As

Publication number Publication date
KR900017006A (ko) 1990-11-15
EP0392612A1 (en) 1990-10-17
CN1046408A (zh) 1990-10-24
US5083224A (en) 1992-01-21
JPH02292776A (ja) 1990-12-04

Similar Documents

Publication Publication Date Title
NL8900934A (nl) Inrichting voor het opnemen van een audiosignaal.
NL8901032A (nl) Coder om extra informatie op te nemen in een digitaal audiosignaal met een tevoren bepaald formaat, een decoder om deze extra informatie uit dit digitale signaal af te leiden, een inrichting voor het opnemen van een digitaal signaal op een registratiedrager, voorzien van de coder, en een registratiedrager verkregen met deze inrichting.
US4333113A (en) Method and apparatus for monitoring the reproduction of recorded information
EP0466190A2 (en) Quantizing error reducer for audio signal
KR100898132B1 (ko) 기록매체, 기록방법, 기록장치, 정보신호를 위한 출력제어방법, 기록매체를 위한 재생장치, 신호전송방법과 콘텐츠 데이터
GB2258372A (en) Method of recording compressed digital audio data by removing redundant bits
US4076969A (en) Impulse noise reduction system
KR100263603B1 (ko) 재기록성 기록 매체상에서 및 그로부터 디지탈 신호를 레코딩 및 재생하는 시스템
MY117107A (en) Optical disk apparatus
JP3615544B2 (ja) 情報の記録媒体，記録器，読取り器及び記録方法
KR100251435B1 (ko) 기록된 테입과 같은 자기 레코드 캐리어를 얻기 위한 장치 및 레코드 캐리어를 재생하기 위한 재생장치
KR100289726B1 (ko) 신호간 간섭 및/또는 크로스토크 감소 장치 및 방법
US6011765A (en) Recording medium having copying protection signals recorded in superposition on main signals
GB2342493A (en) One-bit audio signal processing and reproducing apparatus
JP3112332B2 (ja) データ処理装置
US4590531A (en) System for compensating signal interference in a PCM audio transmission
EP0501792A2 (en) Digital signal recording apparatus for analog/digital input
JP3088838B2 (ja) 音楽検出回路及び該回路を用いた音声信号入力装置
EP0541030B1 (en) Audio reproducing apparatus
NL1005310C2 (nl) Werkwijze voor het tegen kopiëren beveiligen van een audiosignaal.
JP3854313B2 (ja) 複数の情報信号のエンコーディング
KR100223169B1 (ko) 펄스부호변조된 디지털 오디오신호의 기록 및 재생을 위한 시스템
KR100199983B1 (ko) 음악신호 내의 반주신호 재생방법 및 반주신호재생기
JPH0337176Y2 (ko)
NL8802769A (nl) Coder om extra informatie op te nemen in een digitaal audiosignaal met een tevoren bepaald formaat alsmede een decoder om deze extra informatie uit dit digitale signaal af te leiden.

Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed