AU8120782A - Video scrambling and descramabling means using frequency dependent delay means - Google Patents

Video scrambling and descramabling means using frequency dependent delay means

Info

Publication number
AU8120782A
AU8120782A AU81207/82A AU8120782A AU8120782A AU 8120782 A AU8120782 A AU 8120782A AU 81207/82 A AU81207/82 A AU 81207/82A AU 8120782 A AU8120782 A AU 8120782A AU 8120782 A AU8120782 A AU 8120782A
Authority
AU
Australia
Prior art keywords
descramabling
frequency dependent
dependent delay
video scrambling
delay means
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.)
Abandoned
Application number
AU81207/82A
Other languages
English (en)
Inventor
Leo I. Bluestein
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 AU8120782A publication Critical patent/AU8120782A/en
Abandoned 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)
  • Picture Signal Circuits (AREA)
  • Noise Elimination (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
AU81207/82A 1981-03-13 1982-03-09 Video scrambling and descramabling means using frequency dependent delay means Abandoned AU8120782A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24347781A 1981-03-13 1981-03-13
US243477 1981-03-13

Publications (1)

Publication Number Publication Date
AU8120782A true AU8120782A (en) 1982-09-16

Family

ID=22918909

Family Applications (1)

Application Number Title Priority Date Filing Date
AU81207/82A Abandoned AU8120782A (en) 1981-03-13 1982-03-09 Video scrambling and descramabling means using frequency dependent delay means

Country Status (9)

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

Families Citing this family (2)

* 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
USD959894S1 (en) * 2019-12-06 2022-08-09 Re-Lid Engineering Ag Can end

Also Published As

Publication number Publication date
BR8201348A (pt) 1983-01-25
IL65111A0 (en) 1982-04-30
DE3209301A1 (de) 1982-10-21
FR2501948A1 (fr) 1982-09-17
GR76055B (enExample) 1984-08-03
JPS57168588A (en) 1982-10-16
NL8201037A (nl) 1982-10-01
GB2095071A (en) 1982-09-22

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