KR920020470A - 복사방지 시스템 - Google Patents
복사방지 시스템 Download PDFInfo
- Publication number
- KR920020470A KR920020470A KR1019910006341A KR910006341A KR920020470A KR 920020470 A KR920020470 A KR 920020470A KR 1019910006341 A KR1019910006341 A KR 1019910006341A KR 910006341 A KR910006341 A KR 910006341A KR 920020470 A KR920020470 A KR 920020470A
- Authority
- KR
- South Korea
- Prior art keywords
- block
- copy protection
- signal
- protection system
- pulse
- Prior art date
Links
- 238000001514 detection method Methods 0.000 claims 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Classifications
-
- 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
-
- 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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도 (가)는 한 필드(Field)내에서 복사방지 신호가 위치한 곳을 도시하는 도면,
제1도(나)는 복사방지 신호를 나타내는 도면,
제2도는 복사방지 시스템의 구성도,
제3도는 디지틀 신호처리부의 회로도 및 파형도.
Claims (1)
- VTR헤드 스위치 펄스를 입력시켜 포지티브에지(Positive Edge;1)와 네가티브에지(Negative Edge;2)를 검출하고 수평동기신호를 입력하여 헤드 스위치 펄스의 각 포지티브에지(1)와 네가티브에지(2) 시작에서부터 20H 기간동안을 카운트하는 카운터 블럭(3)과 상기 20H기간동안만 펄스를 만들어주는 게이트 펄스 제너레이터(Gate Pulse Generator;4)블럭으로 구성되는 디지탈 신호처리부와, 아날로그부에서 복사방지 신호 유무에 따라 각각의 레벨을 검출하는 레벨검파블럭(6)과 상기 레벨검파블럭(6)에서 검출된 신호에 따라 영상신호의 출력 가부를 조절하는 시그널 킬러블럭(9)으로 구성된 것을 특징으로 하는 복사방지 시스템.※ 참고사항 ; 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910006341A KR930006520B1 (ko) | 1991-04-19 | 1991-04-19 | 복사방지 시스템 |
DE4134842A DE4134842C2 (de) | 1991-04-19 | 1991-10-22 | Kopierschutzvorrichtung für ein in einem Videobandaufnahmegerät verwendetes Software-Programm |
US07/779,196 US5208708A (en) | 1990-04-19 | 1991-10-22 | Copy guard system of a software program used in vtr |
FR9113270A FR2675652A1 (fr) | 1991-04-19 | 1991-10-28 | Systeme de sauvegarde de la copie d'un programme de logiciel utilise dans un enregistreur sur bande video. |
GB9122826A GB2254952B (en) | 1991-04-19 | 1991-10-28 | A system for controlling the recording of a copy protected video signal |
JP3300648A JP2524036B2 (ja) | 1991-04-19 | 1991-11-15 | Vtr用ソフトウェアの複写防止システム |
HK89897A HK89897A (en) | 1991-04-19 | 1997-06-26 | A system for controlling the recording of a copy protected video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910006341A KR930006520B1 (ko) | 1991-04-19 | 1991-04-19 | 복사방지 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920020470A true KR920020470A (ko) | 1992-11-21 |
KR930006520B1 KR930006520B1 (ko) | 1993-07-16 |
Family
ID=19313491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910006341A KR930006520B1 (ko) | 1990-04-19 | 1991-04-19 | 복사방지 시스템 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5208708A (ko) |
JP (1) | JP2524036B2 (ko) |
KR (1) | KR930006520B1 (ko) |
DE (1) | DE4134842C2 (ko) |
FR (1) | FR2675652A1 (ko) |
GB (1) | GB2254952B (ko) |
HK (1) | HK89897A (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100505594B1 (ko) * | 1998-02-16 | 2005-10-19 | 삼성전자주식회사 | 영상신호의 복사방지 신호 검출장치 및 이를 이용한 영상처리씨스템 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2959413B2 (ja) * | 1994-09-29 | 1999-10-06 | 日本ビクター株式会社 | ダビング装置 |
US5737417A (en) * | 1995-04-24 | 1998-04-07 | Technicolor Videocassette, Inc. | Videotape anti-copying encryption scheme |
DE69616469T2 (de) * | 1995-09-01 | 2002-07-18 | Sony Corp | Datenaufzeichnung mit Kopierschutz |
JPH1021144A (ja) | 1996-07-03 | 1998-01-23 | Hitachi Ltd | ディジタル著作物配布システム及び不正な複製物の検出方法 |
JPH10149622A (ja) * | 1996-11-18 | 1998-06-02 | Sony Corp | 情報複製防止方法および情報複製防止装置 |
JP2000069415A (ja) | 1998-08-18 | 2000-03-03 | Fujitsu Ltd | 画像制御回路、画像制御方法、又は、画像制御方法をコンピュータシステムに実行させるためのプログラムを記憶したコンピュータ読み取り可能な媒体 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4336554A (en) * | 1980-06-23 | 1982-06-22 | Clarion Co., Ltd. | Code signal blanking apparatus |
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) |
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 |
JPH0743825B2 (ja) * | 1985-12-04 | 1995-05-15 | ソニー株式会社 | ダビング方式 |
KR930008167B1 (ko) * | 1986-08-11 | 1993-08-26 | 매크로비젼 코포레이션 | 비데오 레코더의 비데오 디스에이블링 회로를 이용하여 비데오 프로그램의 복사를 방지하는 방법 및 장치 |
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 |
JPH0292079A (ja) * | 1988-09-29 | 1990-03-30 | Toshiba Corp | 映像信号のダビング装置 |
JPH03167979A (ja) * | 1989-11-28 | 1991-07-19 | Hitachi Ltd | 磁気記録再生装置 |
-
1991
- 1991-04-19 KR KR1019910006341A patent/KR930006520B1/ko not_active IP Right Cessation
- 1991-10-22 US US07/779,196 patent/US5208708A/en not_active Expired - Lifetime
- 1991-10-22 DE DE4134842A patent/DE4134842C2/de not_active Expired - Fee Related
- 1991-10-28 FR FR9113270A patent/FR2675652A1/fr active Granted
- 1991-10-28 GB GB9122826A patent/GB2254952B/en not_active Expired - Fee Related
- 1991-11-15 JP JP3300648A patent/JP2524036B2/ja not_active Expired - Fee Related
-
1997
- 1997-06-26 HK HK89897A patent/HK89897A/xx not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100505594B1 (ko) * | 1998-02-16 | 2005-10-19 | 삼성전자주식회사 | 영상신호의 복사방지 신호 검출장치 및 이를 이용한 영상처리씨스템 |
Also Published As
Publication number | Publication date |
---|---|
US5208708A (en) | 1993-05-04 |
HK89897A (en) | 1997-08-01 |
GB9122826D0 (en) | 1991-12-11 |
DE4134842A1 (de) | 1992-10-22 |
GB2254952B (en) | 1995-02-15 |
FR2675652A1 (fr) | 1992-10-23 |
GB2254952A (en) | 1992-10-21 |
FR2675652B1 (ko) | 1995-03-03 |
DE4134842C2 (de) | 1994-05-05 |
JP2524036B2 (ja) | 1996-08-14 |
JPH04325964A (ja) | 1992-11-16 |
KR930006520B1 (ko) | 1993-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20080701 Year of fee payment: 16 |
|
LAPS | Lapse due to unpaid annual fee |