ES2192766T3 - Metodo para detectar señales de rafaga de color modificadas para impedir que se copie un programa de video. - Google Patents
Metodo para detectar señales de rafaga de color modificadas para impedir que se copie un programa de video.Info
- Publication number
- ES2192766T3 ES2192766T3 ES98915157T ES98915157T ES2192766T3 ES 2192766 T3 ES2192766 T3 ES 2192766T3 ES 98915157 T ES98915157 T ES 98915157T ES 98915157 T ES98915157 T ES 98915157T ES 2192766 T3 ES2192766 T3 ES 2192766T3
- Authority
- ES
- Spain
- Prior art keywords
- video signal
- modified
- recorder
- signal
- color burst
- 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
Links
Classifications
-
- 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
- H04N2005/91357—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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Television Signal Processing For Recording (AREA)
- Color Television Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
Se modifica una señal de vídeo de tal forma que un receptor de televisión suministra una imagen en color normal, pero una grabadora de cintas de vídeo detecta la modificación y prohíbe la grabación de la señal de vídeo. La fase de la ráfaga de sincronización cromática de la señal de vídeo se modifica de tal forma que se hacen imágenes de peor calidad en el caso de que la señal de vídeo modificada se grabe. Un circuito inhabilitador (22) asociado con la grabadora (20) detecta la presencia de la señal de video modificada. Esta detección se realiza determinando la presencia de señales de fase de sincronización cromática modificadas incluso en una sola línea de televisión de la señal de vídeo. Se produce una señal de control (26) cuando se detecta la señal de fase de sincronización cromática modificada, la cual inhabilita a la grabadora (20). Si no se detecta ninguna señal de fase de sincronización cromática, se permite que la grabadora (20) realice una grabación aceptable de la señal de vídeo.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4083297P | 1997-03-21 | 1997-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2192766T3 true ES2192766T3 (es) | 2003-10-16 |
Family
ID=21913216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES98915157T Expired - Lifetime ES2192766T3 (es) | 1997-03-21 | 1998-03-20 | Metodo para detectar señales de rafaga de color modificadas para impedir que se copie un programa de video. |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0970581B1 (es) |
| JP (1) | JP4171789B2 (es) |
| KR (1) | KR100531968B1 (es) |
| CN (1) | CN1132420C (es) |
| AT (1) | ATE232668T1 (es) |
| AU (1) | AU720847B2 (es) |
| CA (1) | CA2283849C (es) |
| DE (1) | DE69811349T2 (es) |
| DK (1) | DK0970581T3 (es) |
| ES (1) | ES2192766T3 (es) |
| HK (1) | HK1024368A1 (es) |
| PT (1) | PT970581E (es) |
| WO (1) | WO1998043420A1 (es) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4626890A (en) * | 1984-07-03 | 1986-12-02 | Macrovision | Method and apparatus for removing phase modulation from the color burst |
| KR930008167B1 (ko) * | 1986-08-11 | 1993-08-26 | 매크로비젼 코포레이션 | 비데오 레코더의 비데오 디스에이블링 회로를 이용하여 비데오 프로그램의 복사를 방지하는 방법 및 장치 |
| EP0824825B1 (en) * | 1995-05-09 | 2001-10-17 | Macrovision Corporation | Method and apparatus for defeating effects of color burst modifications to a video signal |
| JP3567243B2 (ja) * | 1996-01-16 | 2004-09-22 | マクロヴィジョン コーポレイション | カラーバースト変更がビデオ信号に及ぼす影響を改良する方法及び装置 |
-
1998
- 1998-03-20 DK DK98915157T patent/DK0970581T3/da active
- 1998-03-20 DE DE69811349T patent/DE69811349T2/de not_active Expired - Lifetime
- 1998-03-20 KR KR10-1999-7008638A patent/KR100531968B1/ko not_active IP Right Cessation
- 1998-03-20 JP JP54592898A patent/JP4171789B2/ja not_active Expired - Lifetime
- 1998-03-20 EP EP98915157A patent/EP0970581B1/en not_active Expired - Lifetime
- 1998-03-20 AT AT98915157T patent/ATE232668T1/de active
- 1998-03-20 CN CN988034980A patent/CN1132420C/zh not_active Expired - Lifetime
- 1998-03-20 AU AU69407/98A patent/AU720847B2/en not_active Expired
- 1998-03-20 PT PT98915157T patent/PT970581E/pt unknown
- 1998-03-20 WO PCT/US1998/005798 patent/WO1998043420A1/en active IP Right Grant
- 1998-03-20 ES ES98915157T patent/ES2192766T3/es not_active Expired - Lifetime
- 1998-03-20 CA CA002283849A patent/CA2283849C/en not_active Expired - Lifetime
-
2000
- 2000-06-05 HK HK00103399A patent/HK1024368A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0970581B1 (en) | 2003-02-12 |
| DE69811349T2 (de) | 2003-08-28 |
| KR20010005575A (ko) | 2001-01-15 |
| CN1251239A (zh) | 2000-04-19 |
| DE69811349D1 (de) | 2003-03-20 |
| AU720847B2 (en) | 2000-06-15 |
| ATE232668T1 (de) | 2003-02-15 |
| AU6940798A (en) | 1998-10-20 |
| DK0970581T3 (da) | 2003-05-19 |
| CA2283849A1 (en) | 1998-10-01 |
| EP0970581A1 (en) | 2000-01-12 |
| JP4171789B2 (ja) | 2008-10-29 |
| KR100531968B1 (ko) | 2005-11-30 |
| HK1024368A1 (en) | 2000-10-05 |
| WO1998043420A1 (en) | 1998-10-01 |
| PT970581E (pt) | 2003-06-30 |
| CA2283849C (en) | 2002-12-10 |
| JP2001518270A (ja) | 2001-10-09 |
| CN1132420C (zh) | 2003-12-24 |
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