FR2549332B1 - Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de television - Google Patents
Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de televisionInfo
- Publication number
- FR2549332B1 FR2549332B1 FR8311599A FR8311599A FR2549332B1 FR 2549332 B1 FR2549332 B1 FR 2549332B1 FR 8311599 A FR8311599 A FR 8311599A FR 8311599 A FR8311599 A FR 8311599A FR 2549332 B1 FR2549332 B1 FR 2549332B1
- Authority
- FR
- France
- Prior art keywords
- video signal
- preventing unauthorized
- television video
- unauthorized recording
- recording
- 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
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
- H04N2005/91307—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)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8311599A FR2549332B1 (fr) | 1983-07-12 | 1983-07-12 | Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de television |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8311599A FR2549332B1 (fr) | 1983-07-12 | 1983-07-12 | Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de television |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2549332A1 FR2549332A1 (fr) | 1985-01-18 |
FR2549332B1 true FR2549332B1 (fr) | 1989-03-17 |
Family
ID=9290757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8311599A Expired FR2549332B1 (fr) | 1983-07-12 | 1983-07-12 | Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de television |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2549332B1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US6404974B1 (en) * | 1995-04-07 | 2002-06-11 | Trevor Franklin | Method and apparatus for treating a video signal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52114313A (en) * | 1976-03-23 | 1977-09-26 | Sony Corp | Recorded medium and production method therefor |
-
1983
- 1983-07-12 FR FR8311599A patent/FR2549332B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2549332A1 (fr) | 1985-01-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |