CA2417176C - Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images - Google Patents
Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images Download PDFInfo
- Publication number
- CA2417176C CA2417176C CA002417176A CA2417176A CA2417176C CA 2417176 C CA2417176 C CA 2417176C CA 002417176 A CA002417176 A CA 002417176A CA 2417176 A CA2417176 A CA 2417176A CA 2417176 C CA2417176 C CA 2417176C
- Authority
- CA
- Canada
- Prior art keywords
- sync
- pulses
- video
- signal
- vertical
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/062,866 US5583936A (en) | 1993-05-17 | 1993-05-17 | Video copy protection process enhancement to introduce horizontal and vertical picture distortions |
US062,866 | 1993-05-17 | ||
CA002162367A CA2162367C (fr) | 1993-05-17 | 1994-05-09 | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002162367A Division CA2162367C (fr) | 1993-05-17 | 1994-05-09 | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2417176A1 CA2417176A1 (fr) | 1994-11-24 |
CA2417176C true CA2417176C (fr) | 2005-02-01 |
Family
ID=25678207
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002417180A Expired - Lifetime CA2417180C (fr) | 1993-05-17 | 1994-05-09 | Methode et dispositif pour reduire le processus de protection contre la copie par une augmentation relative dans de synchronisation composite |
CA002476252A Expired - Lifetime CA2476252C (fr) | 1993-05-17 | 1994-05-09 | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images |
CA002417176A Expired - Lifetime CA2417176C (fr) | 1993-05-17 | 1994-05-09 | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002417180A Expired - Lifetime CA2417180C (fr) | 1993-05-17 | 1994-05-09 | Methode et dispositif pour reduire le processus de protection contre la copie par une augmentation relative dans de synchronisation composite |
CA002476252A Expired - Lifetime CA2476252C (fr) | 1993-05-17 | 1994-05-09 | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images |
Country Status (1)
Country | Link |
---|---|
CA (3) | CA2417180C (fr) |
-
1994
- 1994-05-09 CA CA002417180A patent/CA2417180C/fr not_active Expired - Lifetime
- 1994-05-09 CA CA002476252A patent/CA2476252C/fr not_active Expired - Lifetime
- 1994-05-09 CA CA002417176A patent/CA2417176C/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2417180A1 (fr) | 1994-11-24 |
CA2476252A1 (fr) | 1994-11-24 |
CA2417176A1 (fr) | 1994-11-24 |
CA2417180C (fr) | 2005-08-02 |
CA2476252C (fr) | 2005-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5748733A (en) | Method and apparatus to reduce effects of certain copy protection purses within a video signal | |
CA2417176C (fr) | Methode amelioree de protection des enregistrements video contre les duplications qui introduit des distorsions horizontales et verticales dans les images | |
AU702665B2 (en) | Video copy protection process enhancement to introduce horizontal and vertical picture distortions | |
NZ328313A (en) | Enhancing copy protection of video signal: narrowing of line synchronisation pulses |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20140509 |