JP4221516B2 - コピー防止信号を除去するためｒｆ搬送波信号の包絡線を変更する方法及び装置 - Google Patents

コピー防止信号を除去するためｒｆ搬送波信号の包絡線を変更する方法及び装置 Download PDF

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Publication number
JP4221516B2
JP4221516B2 JP53326598A JP53326598A JP4221516B2 JP 4221516 B2 JP4221516 B2 JP 4221516B2 JP 53326598 A JP53326598 A JP 53326598A JP 53326598 A JP53326598 A JP 53326598A JP 4221516 B2 JP4221516 B2 JP 4221516B2
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Prior art keywords
signal
carrier
modulated
copy protection
pulse
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Japanese (ja)
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JP2001512633A5 (enExample
JP2001512633A (ja
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クワン，ロナルド
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マクロヴィジョン コーポレイション
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    • 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
    • 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
    • H04N2005/91314—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 pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses
    • 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
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91371—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video color burst signal being modified

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Facsimile Transmission Control (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
JP53326598A 1997-02-04 1998-02-04 コピー防止信号を除去するためｒｆ搬送波信号の包絡線を変更する方法及び装置 Expired - Fee Related JP4221516B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/794,797 US6058191A (en) 1997-02-04 1997-02-04 Method and apparatus for modifying the envelope of a RF carrier signal to remove copy protection signals therefrom
US08/794,797 1997-02-04
PCT/US1998/002474 WO1998034401A2 (en) 1997-02-04 1998-02-04 Method and apparatus for modifying the envelope of an rf carrier signal to remove copy protection signals therefrom

Publications (3)

Publication Number Publication Date
JP2001512633A JP2001512633A (ja) 2001-08-21
JP2001512633A5 JP2001512633A5 (enExample) 2005-10-06
JP4221516B2 true JP4221516B2 (ja) 2009-02-12

Family

ID=25163711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53326598A Expired - Fee Related JP4221516B2 (ja) 1997-02-04 1998-02-04 コピー防止信号を除去するためｒｆ搬送波信号の包絡線を変更する方法及び装置

Country Status (12)

Country Link
US (1) US6058191A (enExample)
EP (1) EP1013085B1 (enExample)
JP (1) JP4221516B2 (enExample)
KR (1) KR100539997B1 (enExample)
AT (1) ATE217134T1 (enExample)
AU (1) AU717282B2 (enExample)
CA (1) CA2278777C (enExample)
DE (1) DE69805192T2 (enExample)
ES (1) ES2173569T3 (enExample)
NZ (1) NZ336915A (enExample)
PT (1) PT1013085E (enExample)
WO (1) WO1998034401A2 (enExample)

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US6058191A (en) * 1997-02-04 2000-05-02 Macrovision Corp Method and apparatus for modifying the envelope of a RF carrier signal to remove copy protection signals therefrom
US6836549B1 (en) * 1998-09-02 2004-12-28 Macrovision Corporation Method and apparatus for synthesizing and reducing the effects of video copy protection signals
US6430578B1 (en) * 1998-12-04 2002-08-06 Sun Microsystems, Inc. Name service for network management architecture
EP1014361B1 (en) * 1998-12-11 2006-08-09 Sony Corporation Technique for controlling copying of data
WO2000044167A1 (en) 1999-01-26 2000-07-27 Macrovision Corporation Method and apparatus for carrying data with a video signal so that the data is not recorded
US6950520B1 (en) 1999-01-26 2005-09-27 Macrovision Corporation Method and apparatus for carrying data in a video signal so that the data is not recorded
FR2808957B1 (fr) * 2000-05-11 2003-10-24 Dominique Patrick Bryszkowski Dispositifs electroniques economiques desachivant ou attenant les effets des signaux anti-copie inseres dans un signal video et autorisant la copie
US7050698B1 (en) * 2000-08-15 2006-05-23 Macrovision Corporation Method and apparatus for synthesizing or modifying a copy protection signal using a lowered signal level portion
KR20020078344A (ko) * 2001-04-09 2002-10-18 엘지전자 주식회사 동기 신호 추출 회로
US6924910B2 (en) * 2001-08-07 2005-08-02 Kabushiki Kaisha Toshiba Image forming apparatus and image forming method
US7316032B2 (en) * 2002-02-27 2008-01-01 Amad Tayebi Method for allowing a customer to preview, acquire and/or pay for information and a system therefor
US7562397B1 (en) 2002-02-27 2009-07-14 Mithal Ashish K Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof
US7376337B2 (en) * 2002-09-30 2008-05-20 Matsushita Electric Industrial Co., Ltd. Video signal recording apparatus for copyrighted works
GB0301700D0 (en) * 2003-01-24 2003-02-26 Macrovision Corp The copy protection of optical discs
US7116374B2 (en) * 2003-08-26 2006-10-03 Koplar Interactive Systems International, L.L.C. Method and system for enhanced modulation of video signals
KR20050070953A (ko) * 2003-12-31 2005-07-07 삼성전자주식회사 아날로그 입력 신호에 포함된 복제 방지 신호를손상시키지 않고 출력할 수 있는 아날로그/디지털 신호처리 장치 및 그 방법
US7594242B2 (en) * 2004-02-23 2009-09-22 The Nielsen Company (Us), Llc Methods and apparatus to detect an internally generated signal mode of a local media playback device
US7784103B2 (en) 2004-10-19 2010-08-24 Rovi Solutions Corporation Method and apparatus for storing copy protection information separately from protected content
US7907727B2 (en) 2004-10-19 2011-03-15 Rovi Solutions Corporation System and method for allowing copying or distribution of a copy protected signal
CA2585732C (en) * 2004-10-28 2012-03-20 Macrovision Corporation Content management for high definition television
US7690011B2 (en) * 2005-05-02 2010-03-30 Technology, Patents & Licensing, Inc. Video stream modification to defeat detection
US7792293B2 (en) * 2005-05-06 2010-09-07 Rovi Solutions Corporation Method and apparatus for modifying a subsequently generated control command in a content control system
US20080309816A1 (en) * 2007-06-15 2008-12-18 Macrovision Corporation Television content control system and method with cross-platform capability
US8798133B2 (en) * 2007-11-29 2014-08-05 Koplar Interactive Systems International L.L.C. Dual channel encoding and detection
US8280049B2 (en) * 2008-08-27 2012-10-02 Rovi Solutions Corporation Method and apparatus for synthesizing copy protection for reducing/defeating the effectiveness or capability of a circumvention device
US8374490B2 (en) * 2010-02-24 2013-02-12 Rovi Technologies Corporation Method and apparatus for receiving metadata, EPG, or IPG signals in an integrated circuit for control purposes
US20120159534A1 (en) * 2010-07-08 2012-06-21 Rovi Technologies Corporation Signal modification via media guidance application data and/or metadata
US8693554B2 (en) 2011-09-12 2014-04-08 Nxp B.V. Capacitive communication circuit and method therefor
CN116449593B (zh) * 2023-04-04 2025-05-13 惠州市西顿工业发展有限公司 矢量透镜变焦调光控制方法

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US4163252A (en) * 1976-11-03 1979-07-31 Blonder-Tongue Laboratories, Inc. Subscription television decoder apparatus
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JPS592884A (ja) * 1982-06-29 1984-01-09 Mitsubishi Paper Mills Ltd 感熱記録シ−ト
US4521809A (en) * 1982-12-29 1985-06-04 North American Philips Corporation Method and apparatus for controlling access to selected television programs
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US4577216A (en) * 1983-11-14 1986-03-18 Macrovision Method and apparatus for modifying the color burst to prohibit videotape recording
US4631603A (en) * 1985-04-17 1986-12-23 Macrovision Method and apparatus for processing a video signal so as to prohibit the making of acceptable video tape recordings thereof
US4695901A (en) * 1986-03-04 1987-09-22 Macrovision Method and apparatus for removing pseudo-sync and/or agc pulses from a video signal
US5157510A (en) * 1990-12-20 1992-10-20 Macrovision Corporation Method and apparatus for disabling anti-copy protection system in video signals using pulse narrowing
US5161188A (en) * 1991-07-19 1992-11-03 Pires H George Scrambling video by horizontal and vertical time shifting
US5212723A (en) * 1991-08-08 1993-05-18 Macrovision Corp. Burst phase correction system for video descrambling
KR950006083B1 (ko) * 1993-03-05 1995-06-08 주식회사엘지전자 브이 씨 알(vcr)의 알 에프(rf)신호 레벨 자동 조절장치
EP0824825B1 (en) * 1995-05-09 2001-10-17 Macrovision Corporation Method and apparatus for defeating effects of color burst modifications to a video signal
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US6058191A (en) * 1997-02-04 2000-05-02 Macrovision Corp Method and apparatus for modifying the envelope of a RF carrier signal to remove copy protection signals therefrom

Also Published As

Publication number Publication date
KR100539997B1 (ko) 2006-01-10
CA2278777A1 (en) 1998-08-06
US6058191A (en) 2000-05-02
EP1013085B1 (en) 2002-05-02
PT1013085E (pt) 2002-10-31
DE69805192D1 (de) 2002-06-06
ES2173569T3 (es) 2002-10-16
WO1998034401A3 (en) 1998-11-19
NZ336915A (en) 2000-10-27
CA2278777C (en) 2002-04-09
EP1013085A2 (en) 2000-06-28
DE69805192T2 (de) 2002-11-28
AU6152398A (en) 1998-08-25
AU717282B2 (en) 2000-03-23
KR20000070783A (ko) 2000-11-25
WO1998034401A2 (en) 1998-08-06
JP2001512633A (ja) 2001-08-21
ATE217134T1 (de) 2002-05-15

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