JPS57168588A - Scramble and descrumble device for televison video signal - Google Patents

Scramble and descrumble device for televison video signal

Info

Publication number
JPS57168588A
JPS57168588A JP57039261A JP3926182A JPS57168588A JP S57168588 A JPS57168588 A JP S57168588A JP 57039261 A JP57039261 A JP 57039261A JP 3926182 A JP3926182 A JP 3926182A JP S57168588 A JPS57168588 A JP S57168588A
Authority
JP
Japan
Prior art keywords
descrumble
televison
scramble
video signal
video
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.)
Pending
Application number
JP57039261A
Other languages
Japanese (ja)
Inventor
Ai Buruusutain Reo
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.)
Oak Industries Inc
Original Assignee
Oak Industries 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 Oak Industries Inc filed Critical Oak Industries Inc
Publication of JPS57168588A publication Critical patent/JPS57168588A/en
Pending 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H03H15/02—Transversal filters using analogue shift registers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Noise Elimination (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Picture Signal Circuits (AREA)
JP57039261A 1981-03-13 1982-03-12 Scramble and descrumble device for televison video signal Pending JPS57168588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24347781A 1981-03-13 1981-03-13

Publications (1)

Publication Number Publication Date
JPS57168588A true JPS57168588A (en) 1982-10-16

Family

ID=22918909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57039261A Pending JPS57168588A (en) 1981-03-13 1982-03-12 Scramble and descrumble device for televison video signal

Country Status (9)

Country Link
JP (1) JPS57168588A (en)
AU (1) AU8120782A (en)
BR (1) BR8201348A (en)
DE (1) DE3209301A1 (en)
FR (1) FR2501948A1 (en)
GB (1) GB2095071A (en)
GR (1) GR76055B (en)
IL (1) IL65111A0 (en)
NL (1) NL8201037A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186768B (en) * 1985-04-19 1989-07-05 Emc Datacare Ltd Video display unit with improved security

Also Published As

Publication number Publication date
DE3209301A1 (en) 1982-10-21
AU8120782A (en) 1982-09-16
NL8201037A (en) 1982-10-01
FR2501948A1 (en) 1982-09-17
GR76055B (en) 1984-08-03
IL65111A0 (en) 1982-04-30
GB2095071A (en) 1982-09-22
BR8201348A (en) 1983-01-25

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