GB2104701B - Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording) - Google Patents

Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)

Info

Publication number
GB2104701B
GB2104701B GB08124048A GB8124048A GB2104701B GB 2104701 B GB2104701 B GB 2104701B GB 08124048 A GB08124048 A GB 08124048A GB 8124048 A GB8124048 A GB 8124048A GB 2104701 B GB2104701 B GB 2104701B
Authority
GB
United Kingdom
Prior art keywords
recording
source material
gramophone
preventing unauthorised
preventing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB08124048A
Other versions
GB2104701A (en
Inventor
James Bertram King
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08124048A priority Critical patent/GB2104701B/en
Publication of GB2104701A publication Critical patent/GB2104701A/en
Application granted granted Critical
Publication of GB2104701B publication Critical patent/GB2104701B/en
Expired legal-status Critical Current

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
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00688—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
    • 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
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • 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
    • G11B20/0071—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a purchase action
    • 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
    • G11B20/00876—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91321—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy protection control signal, e.g. a record inhibit signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
GB08124048A 1981-08-06 1981-08-06 Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording) Expired GB2104701B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08124048A GB2104701B (en) 1981-08-06 1981-08-06 Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08124048A GB2104701B (en) 1981-08-06 1981-08-06 Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)

Publications (2)

Publication Number Publication Date
GB2104701A GB2104701A (en) 1983-03-09
GB2104701B true GB2104701B (en) 1985-06-05

Family

ID=10523738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08124048A Expired GB2104701B (en) 1981-08-06 1981-08-06 Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)

Country Status (1)

Country Link
GB (1) GB2104701B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US7756290B2 (en) 2000-01-13 2010-07-13 Digimarc Corporation Detecting embedded signals in media content using coincidence metrics
US7970166B2 (en) 2000-04-21 2011-06-28 Digimarc Corporation Steganographic encoding methods and apparatus
US8051294B2 (en) 1993-11-18 2011-11-01 Digimarc Corporation Methods for audio watermarking and decoding
US8204222B2 (en) 1993-11-18 2012-06-19 Digimarc Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US8355514B2 (en) 1993-11-18 2013-01-15 Digimarc Corporation Audio encoding to convey auxiliary information, and media embodying same

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3613684A (en) * 1983-11-21 1985-06-03 Haute Securite Video Hsv S.A. Procede et dispositif anti-piraterie pour supports d'images cinematographiques et video
JPH0743825B2 (en) * 1985-12-04 1995-05-15 ソニー株式会社 Dubbing method
KR930008167B1 (en) * 1986-08-11 1993-08-26 매크로비젼 코포레이션 Method and apparatus for preventing the copying of a video program
GB2196167B (en) * 1986-10-01 1991-01-02 Emi Plc Thorn Apparatus for marking a recorded signal
GB2199689A (en) * 1987-01-05 1988-07-13 Thomas Claude Henry Keen Recording of an information signal
DE3707608A1 (en) * 1987-03-10 1988-09-22 Hormann Franz Juergen Method of coding to prevent video and audio piracy
EP0298691B1 (en) * 1987-07-08 1994-10-05 Matsushita Electric Industrial Co., Ltd. Method and apparatus for protection of signal copy
NL8801275A (en) * 1988-05-18 1989-12-18 Philips Nv RECORDING SYSTEM AND REGISTRATION CARRIER AND WRITING DEVICE FOR APPLICATION IN THE SYSTEM.
DE3806413C2 (en) * 1988-02-29 1997-12-04 Thomson Brandt Gmbh Recorder with copy protection
GB8809347D0 (en) * 1988-04-20 1988-05-25 Emi Plc Thorn Apparatus for marking recorded signal
NL8900934A (en) * 1989-04-14 1990-11-01 Philips Nv DEVICE FOR RECORDING AN AUDIO SIGNAL.
DE3912998A1 (en) * 1989-04-20 1990-10-25 Thomson Brandt Gmbh Digital audio tape recorder with copy protection - uses amplitude reduction of supplied analogue signal before recording
KR930006520B1 (en) * 1991-04-19 1993-07-16 삼성전자 주식회사 Copy protecting system for vtr
JPH0644755A (en) * 1992-07-24 1994-02-18 Sony Corp Method for transmitting video signal and recorder therefor
US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611607B1 (en) 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
US8051294B2 (en) 1993-11-18 2011-11-01 Digimarc Corporation Methods for audio watermarking and decoding
US8204222B2 (en) 1993-11-18 2012-06-19 Digimarc Corporation Steganographic encoding and decoding of auxiliary codes in media signals
US8355514B2 (en) 1993-11-18 2013-01-15 Digimarc Corporation Audio encoding to convey auxiliary information, and media embodying same
US7756290B2 (en) 2000-01-13 2010-07-13 Digimarc Corporation Detecting embedded signals in media content using coincidence metrics
US8027510B2 (en) 2000-01-13 2011-09-27 Digimarc Corporation Encoding and decoding media signals
US7970166B2 (en) 2000-04-21 2011-06-28 Digimarc Corporation Steganographic encoding methods and apparatus

Also Published As

Publication number Publication date
GB2104701A (en) 1983-03-09

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940806