FR2524240A1 - Circuit analogique de decryptage pour systeme de transmission d'emissions cryptees de television et systeme de transmission d'emissions cryptees comprenant un tel circuit - Google Patents
Circuit analogique de decryptage pour systeme de transmission d'emissions cryptees de television et systeme de transmission d'emissions cryptees comprenant un tel circuit Download PDFInfo
- Publication number
- FR2524240A1 FR2524240A1 FR8205006A FR8205006A FR2524240A1 FR 2524240 A1 FR2524240 A1 FR 2524240A1 FR 8205006 A FR8205006 A FR 8205006A FR 8205006 A FR8205006 A FR 8205006A FR 2524240 A1 FR2524240 A1 FR 2524240A1
- Authority
- FR
- France
- Prior art keywords
- channels
- delays
- delay
- channel
- decryption
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims description 14
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 238000006731 degradation reaction Methods 0.000 claims abstract description 5
- 230000004044 response Effects 0.000 claims abstract description 5
- 238000010200 validation analysis Methods 0.000 claims abstract description 4
- 230000001934 delay Effects 0.000 claims description 27
- 230000003321 amplification Effects 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000012937 correction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 241000272814 Anser sp. Species 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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
- H04N7/169—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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8205006A FR2524240A1 (fr) | 1982-03-24 | 1982-03-24 | Circuit analogique de decryptage pour systeme de transmission d'emissions cryptees de television et systeme de transmission d'emissions cryptees comprenant un tel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8205006A FR2524240A1 (fr) | 1982-03-24 | 1982-03-24 | Circuit analogique de decryptage pour systeme de transmission d'emissions cryptees de television et systeme de transmission d'emissions cryptees comprenant un tel circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2524240A1 true FR2524240A1 (fr) | 1983-09-30 |
| FR2524240B1 FR2524240B1 (enExample) | 1984-05-04 |
Family
ID=9272335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8205006A Granted FR2524240A1 (fr) | 1982-03-24 | 1982-03-24 | Circuit analogique de decryptage pour systeme de transmission d'emissions cryptees de television et systeme de transmission d'emissions cryptees comprenant un tel circuit |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2524240A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543294A1 (en) * | 1991-11-19 | 1993-05-26 | Macrovision Corporation | Method and apparatus for scrambling and descrambling of video signals with edge fill |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996576A (en) * | 1959-02-20 | 1961-08-15 | Ampex | Video system with transient and dropout compensation |
| US3453380A (en) * | 1966-10-03 | 1969-07-01 | Zenith Radio Corp | Variable delay network |
| US3679814A (en) * | 1970-02-16 | 1972-07-25 | Minnesota Mining & Mfg | Dropout compensator for color television |
| US3689688A (en) * | 1970-11-02 | 1972-09-05 | Skiatron Elect & Tele | Communications secrecy system |
-
1982
- 1982-03-24 FR FR8205006A patent/FR2524240A1/fr active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996576A (en) * | 1959-02-20 | 1961-08-15 | Ampex | Video system with transient and dropout compensation |
| US3453380A (en) * | 1966-10-03 | 1969-07-01 | Zenith Radio Corp | Variable delay network |
| US3679814A (en) * | 1970-02-16 | 1972-07-25 | Minnesota Mining & Mfg | Dropout compensator for color television |
| US3689688A (en) * | 1970-11-02 | 1972-09-05 | Skiatron Elect & Tele | Communications secrecy system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543294A1 (en) * | 1991-11-19 | 1993-05-26 | Macrovision Corporation | Method and apparatus for scrambling and descrambling of video signals with edge fill |
| US5438620A (en) * | 1991-11-19 | 1995-08-01 | Macrovision Corporation | Method and apparatus for scrambling and descrambling of video signal with edge fill |
| EP1233620A1 (en) * | 1991-11-19 | 2002-08-21 | Macrovision Corporation | Method and apparatus for concealing a composite video signal by use of sync wiggle |
| EP1233621A3 (en) * | 1991-11-19 | 2003-01-02 | Macrovision Corporation | Method and apparatus for scrambling and descrambling of video signals using edge fill |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2524240B1 (enExample) | 1984-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| CD | Change of name or company name | ||
| CD | Change of name or company name |