[go: up one dir, main page]

DK121489A - Krypterings- eller dekrypteringsenhed til et mac-fjernsynssystem - Google Patents

Krypterings- eller dekrypteringsenhed til et mac-fjernsynssystem

Info

Publication number
DK121489A
DK121489A DK121489A DK121489A DK121489A DK 121489 A DK121489 A DK 121489A DK 121489 A DK121489 A DK 121489A DK 121489 A DK121489 A DK 121489A DK 121489 A DK121489 A DK 121489A
Authority
DK
Denmark
Prior art keywords
cryptographic
decryption device
mac remote
mac
remote
Prior art date
Application number
DK121489A
Other languages
Danish (da)
English (en)
Other versions
DK121489D0 (da
Inventor
Issa Rakhodai
Original Assignee
Philips Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of DK121489D0 publication Critical patent/DK121489D0/da
Publication of DK121489A publication Critical patent/DK121489A/da

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)
DK121489A 1988-07-06 1989-03-13 Krypterings- eller dekrypteringsenhed til et mac-fjernsynssystem DK121489A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8809165A FR2634085A1 (fr) 1988-07-06 1988-07-06 Dispositif d'embrouillage ou de desembrouillage pour un systeme de television mac

Publications (2)

Publication Number Publication Date
DK121489D0 DK121489D0 (da) 1989-03-13
DK121489A true DK121489A (da) 1990-01-07

Family

ID=9368147

Family Applications (1)

Application Number Title Priority Date Filing Date
DK121489A DK121489A (da) 1988-07-06 1989-03-13 Krypterings- eller dekrypteringsenhed til et mac-fjernsynssystem

Country Status (5)

Country Link
EP (1) EP0349680A1 (fi)
DK (1) DK121489A (fi)
FI (1) FI885648A (fi)
FR (1) FR2634085A1 (fi)
NO (1) NO891154L (fi)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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 (fr) * 1984-03-30 1988-02-05 Loire Electro Region Pays Circuits de codage et de decodage d'un signal video code par un decalage du signal d'image par rapport au signal de synchronisation
GB2186768B (en) * 1985-04-19 1989-07-05 Emc Datacare Ltd Video display unit with improved security

Also Published As

Publication number Publication date
NO891154L (no) 1990-01-08
FI885648A (fi) 1990-01-07
NO891154D0 (no) 1989-03-16
EP0349680A1 (fr) 1990-01-10
FR2634085A1 (fr) 1990-01-12
DK121489D0 (da) 1989-03-13
FI885648A0 (fi) 1988-12-05

Similar Documents

Publication Publication Date Title
NO880354D0 (no) Stoetsikker anordning for beskyttelse av styreenheter, spesielt fjernstyreenheter for tv.
AU5135193A (en) Encryption device
DE69327644D1 (de) Ferngesteuertes Sicherheitssystem
FI901406A0 (fi) Katselumaksullinen viihdejärjestelmä
IL91900A (en) Encryption key monitoring system
AT399966B (de) Synchronisiervorrichtung
DE69411996D1 (de) Betrachtungsgerät
DK575086D0 (da) Afstemningssystem til fjernsynsapparater
GB8820470D0 (en) Security device & system
GB2293729B (en) A ciphering device
DK121489A (da) Krypterings- eller dekrypteringsenhed til et mac-fjernsynssystem
AU1362788A (en) Blocking device for flexible ties
DE68909427D1 (de) Einrichtung zur blockweisen fernsehzeilenpermutation.
AU2291692A (en) Ciphering device
GB8823134D0 (en) Security device for video recorder
ZA894106B (en) Enciphering and deciphering device for high bit-rate transmission systems
GB2221945B (en) Security viewing device
GB8828161D0 (en) Fastening device & security system using same
GB8901497D0 (en) Data encryption device
FI924942A0 (fi) Videokuvan salausjärjestelmä
KR950022174U (ko) 리모콘 수신부 회전 장치
KR890006674Y1 (en) Tv remocon holding device
FI901974A (fi) System foer spridning av massa.
KR900005958U (ko) Tv수상기용 영상 출력장치
GB9126464D0 (en) Encrypted broadcast system