NO891154D0 - SCRAMBLING OR DESCRAMBLING DEVICE ON A MAC TV SYSTEM. - Google Patents
SCRAMBLING OR DESCRAMBLING DEVICE ON A MAC TV SYSTEM.Info
- Publication number
- NO891154D0 NO891154D0 NO891154A NO891154A NO891154D0 NO 891154 D0 NO891154 D0 NO 891154D0 NO 891154 A NO891154 A NO 891154A NO 891154 A NO891154 A NO 891154A NO 891154 D0 NO891154 D0 NO 891154D0
- Authority
- NO
- Norway
- Prior art keywords
- scrambling
- mac
- descrambling device
- descrambling
- Prior art date
Links
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)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8809165A FR2634085A1 (en) | 1988-07-06 | 1988-07-06 | DEVICE FOR SCREENING OR UNLOCKING FOR A MAC TELEVISION SYSTEM |
Publications (2)
Publication Number | Publication Date |
---|---|
NO891154D0 true NO891154D0 (en) | 1989-03-16 |
NO891154L NO891154L (en) | 1990-01-08 |
Family
ID=9368147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO89891154A NO891154L (en) | 1988-07-06 | 1989-03-16 | SCRAMBLING OR DESCRAMBLING DEVICE ON A MAC TV SYSTEM. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0349680A1 (en) |
DK (1) | DK121489A (en) |
FI (1) | FI885648A (en) |
FR (1) | FR2634085A1 (en) |
NO (1) | NO891154L (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1338158C (en) * | 1982-07-15 | 1996-03-12 | John D. Lowry | Encryption and decryption (scrambling and unscrambling) of video signals |
FR2562365B1 (en) * | 1984-03-30 | 1988-02-05 | Loire Electro Region Pays | CIRCUITS FOR ENCODING AND DECODING A VIDEO SIGNAL ENCODED BY OFFSETTING THE IMAGE SIGNAL FROM THE SYNCHRONIZATION SIGNAL |
GB2186768B (en) * | 1985-04-19 | 1989-07-05 | Emc Datacare Ltd | Video display unit with improved security |
-
1988
- 1988-07-06 FR FR8809165A patent/FR2634085A1/en not_active Withdrawn
- 1988-12-02 EP EP88202765A patent/EP0349680A1/en not_active Withdrawn
- 1988-12-05 FI FI885648A patent/FI885648A/en not_active IP Right Cessation
-
1989
- 1989-03-13 DK DK121489A patent/DK121489A/en unknown
- 1989-03-16 NO NO89891154A patent/NO891154L/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI885648A (en) | 1990-01-07 |
FR2634085A1 (en) | 1990-01-12 |
NO891154L (en) | 1990-01-08 |
EP0349680A1 (en) | 1990-01-10 |
DK121489A (en) | 1990-01-07 |
DK121489D0 (en) | 1989-03-13 |
FI885648A0 (en) | 1988-12-05 |
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