NL8900934A - Inrichting voor het opnemen van een audiosignaal. - Google Patents
Inrichting voor het opnemen van een audiosignaal. Download PDFInfo
- 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
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)
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)
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)
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 |
-
1989
- 1989-04-14 NL NL8900934A patent/NL8900934A/nl not_active Application Discontinuation
-
1990
- 1990-03-15 US US07/495,017 patent/US5083224A/en not_active Expired - Fee Related
- 1990-04-09 EP EP90200848A patent/EP0392612A1/en not_active Withdrawn
- 1990-04-11 CN CN90102070A patent/CN1046408A/zh active Pending
- 1990-04-11 JP JP2094196A patent/JPH02292776A/ja active Pending
- 1990-04-11 KR KR1019900004947A patent/KR900017006A/ko not_active Application Discontinuation
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 |
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Legal Events
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A1B | A search report has been drawn up | ||
BV | The patent application has lapsed |