JPS625513B2 - - Google Patents

Info

Publication number
JPS625513B2
JPS625513B2 JP55144580A JP14458080A JPS625513B2 JP S625513 B2 JPS625513 B2 JP S625513B2 JP 55144580 A JP55144580 A JP 55144580A JP 14458080 A JP14458080 A JP 14458080A JP S625513 B2 JPS625513 B2 JP S625513B2
Authority
JP
Japan
Prior art keywords
signal
synchronization signal
television
pseudo
level
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
Application number
JP55144580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5768981A (en
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 JPS5768981A (en) 1982-04-27
JPS625513B2 true JPS625513B2 (cs) 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 (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521809A (en) * 1982-12-29 1985-06-04 North American Philips Corporation Method and apparatus for controlling access to selected television programs
AU658014B2 (en) * 1991-11-19 1995-03-30 Macrovision Corporation Method and apparatus for scrambling and descrambling of video signals with edge fill

Also Published As

Publication number Publication date
JPS5768981A (en) 1982-04-27

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