DE69638231D1 - Digitale entfernung von videokopierschutzimpulsen - Google Patents

Digitale entfernung von videokopierschutzimpulsen

Info

Publication number
DE69638231D1
DE69638231D1 DE69638231T DE69638231T DE69638231D1 DE 69638231 D1 DE69638231 D1 DE 69638231D1 DE 69638231 T DE69638231 T DE 69638231T DE 69638231 T DE69638231 T DE 69638231T DE 69638231 D1 DE69638231 D1 DE 69638231D1
Authority
DE
Germany
Prior art keywords
circuit
signals
copy protection
copy
triggers
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 - Lifetime
Application number
DE69638231T
Other languages
English (en)
Inventor
Ronald Quan
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.)
Adeia Solutions LLC
Original Assignee
Rovi Solutions Corp
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 Rovi Solutions Corp filed Critical Rovi Solutions Corp
Application granted granted Critical
Publication of DE69638231D1 publication Critical patent/DE69638231D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
    • H03K19/1733—Controllable logic circuits
    • H03K19/1737—Controllable logic circuits using multiplexers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/38—Starting, stopping or resetting the counter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • 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
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1693—Systems operating in the time domain of the television signal by displacing synchronisation signals relative to active picture signals or vice versa
    • 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
    • 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
DE69638231T 1995-10-17 1996-10-17 Digitale entfernung von videokopierschutzimpulsen Expired - Lifetime DE69638231D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US568195P 1995-10-17 1995-10-17
PCT/US1996/016767 WO1997016022A1 (en) 1995-10-17 1996-10-17 Digitally removing video copy protection pulses

Publications (1)

Publication Number Publication Date
DE69638231D1 true DE69638231D1 (de) 2010-09-23

Family

ID=21717156

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69635555T Expired - Lifetime DE69635555T2 (de) 1995-10-17 1996-10-17 Verfahren und vorrichtung zur entfernung oder unterdrückung von kopierschutzsignaleffekten von/in einem videosignal
DE69638231T Expired - Lifetime DE69638231D1 (de) 1995-10-17 1996-10-17 Digitale entfernung von videokopierschutzimpulsen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69635555T Expired - Lifetime DE69635555T2 (de) 1995-10-17 1996-10-17 Verfahren und vorrichtung zur entfernung oder unterdrückung von kopierschutzsignaleffekten von/in einem videosignal

Country Status (12)

Country Link
US (4) US6002830A (de)
EP (4) EP0890261B1 (de)
JP (2) JP4355819B2 (de)
KR (2) KR100489145B1 (de)
CN (2) CN1164113C (de)
AT (2) ATE477678T1 (de)
AU (3) AU700093B2 (de)
CA (2) CA2234971C (de)
DE (2) DE69635555T2 (de)
HK (1) HK1015100A1 (de)
NZ (2) NZ323128A (de)
WO (2) WO1997015142A1 (de)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE207274T1 (de) * 1995-05-09 2001-11-15 Macrovision Corp Verfahren und anlage zum beseitigen der folgen der veränderung des farbburstsignals in einem fernsehsignal
US6516132B1 (en) * 1995-05-09 2003-02-04 Macrovision Corp Method and apparatus for improving the effects of color burst modifications to a video signal
KR100489145B1 (ko) * 1995-10-17 2005-09-14 매크로비젼 코포레이션 비디오신호로부터비디오복사방지신호들의영향들을디지탈적으로제거하기위한방법및장치
DK0891669T3 (da) * 1996-04-01 2000-12-18 Macrovision Corp Fremgangsmåde til styring af kopibeskyttelse af signalmateriale transmitteret via digitale netværk
US7395545B2 (en) * 1997-03-31 2008-07-01 Macrovision Corporation Method and apparatus for providing copy protection using a transmittal mode command
JP3891230B2 (ja) * 1997-05-29 2007-03-14 ソニー株式会社 付加情報重畳装置および付加情報重畳方法
US6404889B1 (en) 1997-06-30 2002-06-11 Macrovision Corporation Protection of a component video signal
US6295360B1 (en) 1997-06-30 2001-09-25 Macrovision Corporation Method and apparatus to defeat composite video signal protection
JP4003096B2 (ja) * 1997-09-01 2007-11-07 ソニー株式会社 映像信号への付加情報の重畳方法および重畳装置
US6141488A (en) 1997-09-05 2000-10-31 United Video Properties, Inc. Program guide system for recording television programs
US6459795B1 (en) * 1998-02-26 2002-10-01 Macrovision Corporation Method and apparatus for enhancing the scrambling of a TV signal via erroneous clamp signals
US6600873B1 (en) * 1998-03-20 2003-07-29 Macrovision Corporation Method and apparatus for detecting modified color burst signals to prevent the copying of a video program
US6137952A (en) * 1998-04-02 2000-10-24 Hewlett-Packard Company Apparatus and method for degrading the quality of unauthorized copies of color images and video sequences
AU4407199A (en) * 1998-05-20 1999-12-06 Recording Industry Association Of America Copy protection method using broken modulation rules
US6345099B1 (en) * 1998-05-22 2002-02-05 S3 Incorporated System and method for copy protecting computer graphics
JP3613333B2 (ja) * 1998-09-02 2005-01-26 マクロビジョン・コーポレーション ビデオコピー保護信号を合成、阻止する方法並びに装置
US6836549B1 (en) 1998-09-02 2004-12-28 Macrovision Corporation Method and apparatus for synthesizing and reducing the effects of video copy protection signals
EP1480456A1 (de) * 1998-09-02 2004-11-24 Macrovision Corporation Verfahren und Anlage zur Verringerung der Wirkung von Videokopierschutzsignalen
US7092043B2 (en) 1998-11-12 2006-08-15 Broadcom Corporation Fully integrated tuner architecture
US7634089B1 (en) 1999-10-29 2009-12-15 Sarnoff Corporation Cinema anti-piracy measures
US7324646B1 (en) 1999-10-29 2008-01-29 Sarnoff Corporation Method and apparatus for film anti-piracy
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
US6842522B1 (en) * 2000-06-01 2005-01-11 Macrovision Corporation Secure digital video disk and player
US20050063256A1 (en) * 2000-06-30 2005-03-24 Selinfreund Richard H. Data storage in optical discs
US7124944B2 (en) * 2000-06-30 2006-10-24 Verification Technologies, Inc. Product packaging including digital data
WO2002002301A1 (en) 2000-06-30 2002-01-10 Verification Technologies Inc. Copy-protected optical media and method of manufacture thereof
US6638593B2 (en) 2000-06-30 2003-10-28 Verification Technologies, Inc. Copy-protected optical media and method of manufacture thereof
US7660415B2 (en) 2000-08-03 2010-02-09 Selinfreund Richard H Method and apparatus for controlling access to storage media
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
US7110042B1 (en) * 2001-11-07 2006-09-19 Pixelworks, Inc. Synchronization signal decoder and associated method
US7599604B2 (en) * 2001-12-14 2009-10-06 Thomson Licensing Asynchronous copy protection detector
US20050084645A1 (en) * 2002-02-07 2005-04-21 Selinfreund Richard H. Method and system for optical disc copy-protection
JP3789838B2 (ja) * 2002-03-26 2006-06-28 三洋電機株式会社 表示装置
JP2004064369A (ja) * 2002-07-29 2004-02-26 Toshiba Corp 複製防止用信号の検出装置および方法
US7398008B2 (en) * 2002-09-19 2008-07-08 Hewlett-Packard Development Company, L.P. Copy protection for analog video signals from computing devices
WO2004029914A1 (en) * 2002-09-26 2004-04-08 Verification Technologies, Inc. Authentication of items using transient optical state change materials
US7376337B2 (en) * 2002-09-30 2008-05-20 Matsushita Electric Industrial Co., Ltd. Video signal recording apparatus for copyrighted works
US20060203700A1 (en) * 2003-02-06 2006-09-14 Verification Technologies, Inc. Method and system for optical disk copy-protection
US7116374B2 (en) * 2003-08-26 2006-10-03 Koplar Interactive Systems International, L.L.C. Method and system for enhanced modulation of video signals
US7865057B2 (en) * 2003-10-07 2011-01-04 Rovi Solutions Corporation Method and apparatus for conveying rights across an analog video interface
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
US7664175B1 (en) 2004-06-16 2010-02-16 Koplar Interactive Systems International, L.L.C. Mark-based content modulation and detection
US20060023598A1 (en) * 2004-07-30 2006-02-02 Babinski James P Method and apparatus for protecting against copying of content recorded on optical recording media
DE102004046618A1 (de) * 2004-09-25 2006-03-30 Robert Bosch Gmbh Schaltungsanordnung zum Analog/Digital-Wandeln
US7907727B2 (en) * 2004-10-19 2011-03-15 Rovi Solutions Corporation System and method for allowing copying or distribution of a copy protected signal
US7784103B2 (en) * 2004-10-19 2010-08-24 Rovi Solutions Corporation Method and apparatus for storing copy protection information separately from protected content
CA2763846A1 (en) * 2004-10-28 2006-05-11 Rovi Solutions Corporation Content management for high definition television
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
US20080100597A1 (en) * 2006-10-25 2008-05-01 Macrovision Corporation Method and apparatus to improve playability in overscan areas of a TV display
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
US20090317057A1 (en) * 2008-06-24 2009-12-24 Hua Wu Apparatus and method for selectively outputting hd/sd signals as high definition video according to copy protection
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
TWI357186B (en) * 2008-10-17 2012-01-21 Wistron Corp Electronic card connector, electronic decoding dev
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
US10945051B1 (en) 2020-04-06 2021-03-09 Bank Of America Corporation System and method for intentionally distorting digital media to reduce the accuracy of generative machine learning algorithms

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336554A (en) * 1980-06-23 1982-06-22 Clarion Co., Ltd. Code signal blanking apparatus
US4571615A (en) * 1983-06-10 1986-02-18 General Instrument Corporation Timing generator for sync suppressed television signals
US4577216A (en) * 1983-11-14 1986-03-18 Macrovision Method and apparatus for modifying the color burst to prohibit videotape recording
US5194965A (en) * 1983-11-23 1993-03-16 Macrovision Corporation Method and apparatus for disabling anti-copy protection system in video signals
US4819098A (en) * 1983-11-23 1989-04-04 Macrovision Corporation Method and apparatus for clustering modifications made to a video signal to inhibit the making of acceptable videotape recordings
US4742543A (en) * 1983-12-22 1988-05-03 Frederiksen Jeffrey E Video transmission system
US4626890A (en) * 1984-07-03 1986-12-02 Macrovision Method and apparatus for removing phase modulation from the color burst
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
US4907093A (en) * 1986-08-11 1990-03-06 Macrovision Corporation Method and apparatus for preventing the copying of a video program
US4937679A (en) * 1986-08-11 1990-06-26 Macrovision Dual deck video recording apparatus having enhanced copy protection and method for providing enhanced copy protection to such a recording apparatus
CA1337496C (en) * 1987-07-29 1995-10-31 Yasunori Takahashi Copy protected pre-recorded videotape
US5058157A (en) * 1989-09-06 1991-10-15 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
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
US5315448A (en) * 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
US5583936A (en) * 1993-05-17 1996-12-10 Macrovision Corporation Video copy protection process enhancement to introduce horizontal and vertical picture distortions
ATE207274T1 (de) * 1995-05-09 2001-11-15 Macrovision Corp Verfahren und anlage zum beseitigen der folgen der veränderung des farbburstsignals in einem fernsehsignal
KR100489145B1 (ko) * 1995-10-17 2005-09-14 매크로비젼 코포레이션 비디오신호로부터비디오복사방지신호들의영향들을디지탈적으로제거하기위한방법및장치
JP3694981B2 (ja) * 1996-04-18 2005-09-14 ソニー株式会社 ビデオ信号処理装置およびビデオ信号処理方法
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
JP4450434B2 (ja) 2010-04-14
KR19990064352A (ko) 1999-07-26
EP0856224A1 (de) 1998-08-05
JPH11513872A (ja) 1999-11-24
ATE312475T1 (de) 2005-12-15
CA2234971C (en) 2001-08-07
AU715473B2 (en) 2000-02-03
JP4355819B2 (ja) 2009-11-04
AU1428799A (en) 1999-04-01
CA2234971A1 (en) 1997-04-24
AU7718396A (en) 1997-05-15
KR100489145B1 (ko) 2005-09-14
KR100474124B1 (ko) 2005-07-18
EP0890261A1 (de) 1999-01-13
US6421497B1 (en) 2002-07-16
DE69635555D1 (de) 2006-01-12
HK1015100A1 (en) 1999-10-08
AU700266B2 (en) 1998-12-24
NZ323128A (en) 1998-09-24
KR19990064292A (ko) 1999-07-26
EP1416730A3 (de) 2010-07-07
EP0890261B1 (de) 2010-08-11
US6173109B1 (en) 2001-01-09
ATE477678T1 (de) 2010-08-15
EP0856224A4 (de) 1998-11-25
EP1646234A3 (de) 2010-11-24
US5953417A (en) 1999-09-14
DE69635555T2 (de) 2006-07-13
CN1164113C (zh) 2004-08-25
EP0856224B1 (de) 2005-12-07
US6002830A (en) 1999-12-14
CN1200222A (zh) 1998-11-25
CN1118192C (zh) 2003-08-13
NZ321300A (en) 1998-08-26
CA2234972A1 (en) 1997-05-01
CN1200219A (zh) 1998-11-25
AU7458096A (en) 1997-05-07
JPH11513861A (ja) 1999-11-24
EP1416730A2 (de) 2004-05-06
AU700093B2 (en) 1998-12-24
EP0890261A4 (de) 1999-01-13
WO1997016022A1 (en) 1997-05-01
EP1646234A2 (de) 2006-04-12
WO1997015142A1 (en) 1997-04-24
CA2234972C (en) 2001-07-31

Similar Documents

Publication Publication Date Title
DE69638231D1 (de) Digitale entfernung von videokopierschutzimpulsen
TR199600847A2 (tr) Bir analog renkli video sinyalinin patlama araligina faz kaymali bir renk patlamasi sinyali ekleyerek kayida karsi korunmasi.
MY127832A (en) Multiple video input clamping arrangement
DE69320223D1 (de) Bearbeitung eines digitalen Fernsehsignals
AU545191B2 (en) Television signal ghost detection and cancellation
ES8403265A1 (es) Perfeccionamientos introducidos en un aparato usado en un sistema para tratar senales de video representativas de imagen.
JPS5324724A (en) Color television receiver
JPS53132214A (en) Vertical aperture correction circuit
GB1512149A (en) Colour television
JPS55151851A (en) Signal blocking device
DE69323528D1 (de) Farbsynchronsignaldetektion
JPS5216919A (en) Television device
GB2222741B (en) Circuit for deriving line,field and picture sync pulses from a high definition tv sync signal
ATE187028T1 (de) Signalverarbeitung
KR940006703U (ko) 무신호시 화면 블랭킹 방지회로
ES8504417A1 (es) Sistema de tratamiento de senales video procedentes de un dispositivo de produccion tal como camara de television en color, magnetoscopio o analogos, principalmente tipo secam
JPS54127220A (en) Tuning display unit of television receiver
KR940004618U (ko) Tv osd 신호와 캡션 osd 신호의 간섭방지회로
JPS53140928A (en) Television receiver
KR940011417U (ko) 복사보호신호 입력시 정상화면이 가능한 티브이씨알(tvcr) 시스템
FR2406361A1 (fr) Procede antimarquage du tube image pour jeux electroniques dits " jeux video " et dispositif de mise en oeuvre
FR2438398A1 (fr) Circuit video muni d'un dispositif anti-marquage
KR970050275U (ko) 브이씨알 테이프의 복사방지용 신호에 의한 흑레벨 변동 방지회로
JPS57129594A (en) Dropout compensating device
KR900008977U (ko) 디지탈 오디오의 동기신호 오검출 방지회로