JPS5768981A - Scramble system for television signal - Google Patents

Scramble system for television signal

Info

Publication number
JPS5768981A
JPS5768981A JP55144580A JP14458080A JPS5768981A JP S5768981 A JPS5768981 A JP S5768981A JP 55144580 A JP55144580 A JP 55144580A JP 14458080 A JP14458080 A JP 14458080A JP S5768981 A JPS5768981 A JP S5768981A
Authority
JP
Japan
Prior art keywords
signal
transmitted
reception side
switch
synchronizing
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
Application number
JP55144580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS625513B2 (fr
Inventor
Toshio Komori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marantz Japan Inc
Original Assignee
Marantz Japan Inc
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 Marantz Japan Inc filed Critical Marantz Japan Inc
Priority to JP55144580A priority Critical patent/JPS5768981A/ja
Publication of JPS5768981A publication Critical patent/JPS5768981A/ja
Publication of JPS625513B2 publication Critical patent/JPS625513B2/ja
Granted legal-status Critical Current

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)
JP55144580A 1980-10-16 1980-10-16 Scramble system for television signal Granted JPS5768981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55144580A JPS5768981A (en) 1980-10-16 1980-10-16 Scramble system for television signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55144580A JPS5768981A (en) 1980-10-16 1980-10-16 Scramble system for television signal

Publications (2)

Publication Number Publication Date
JPS5768981A true JPS5768981A (en) 1982-04-27
JPS625513B2 JPS625513B2 (fr) 1987-02-05

Family

ID=15365442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55144580A Granted JPS5768981A (en) 1980-10-16 1980-10-16 Scramble system for television signal

Country Status (1)

Country Link
JP (1) JPS5768981A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156087A (ja) * 1982-12-29 1984-09-05 ノ−ス・アメリカン・フイリツプス・コ−ポレ−シヨン 選択されたテレビジヨン番組に対する加入者のアクセス制御方法及び装置
EP1233620A1 (fr) * 1991-11-19 2002-08-21 Macrovision Corporation Méthode et dispositif pour cacher un signal vidéo composite au moyen de sautillage de signaux de synchronisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156087A (ja) * 1982-12-29 1984-09-05 ノ−ス・アメリカン・フイリツプス・コ−ポレ−シヨン 選択されたテレビジヨン番組に対する加入者のアクセス制御方法及び装置
EP1233620A1 (fr) * 1991-11-19 2002-08-21 Macrovision Corporation Méthode et dispositif pour cacher un signal vidéo composite au moyen de sautillage de signaux de synchronisation

Also Published As

Publication number Publication date
JPS625513B2 (fr) 1987-02-05

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