CA1016647A - Apparatus for scrambling and unscrambling an amplitude modulated signal - Google Patents

Apparatus for scrambling and unscrambling an amplitude modulated signal

Info

Publication number
CA1016647A
CA1016647A CA230,897A CA230897A CA1016647A CA 1016647 A CA1016647 A CA 1016647A CA 230897 A CA230897 A CA 230897A CA 1016647 A CA1016647 A CA 1016647A
Authority
CA
Canada
Prior art keywords
unscrambling
scrambling
modulated signal
amplitude modulated
amplitude
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
CA230,897A
Other languages
French (fr)
Inventor
Edward T. Ball
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA230,897A priority Critical patent/CA1016647A/en
Application granted granted Critical
Publication of CA1016647A publication Critical patent/CA1016647A/en
Expired 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
    • H04N7/171—Systems operating in the amplitude domain of the television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
CA230,897A 1975-07-07 1975-07-07 Apparatus for scrambling and unscrambling an amplitude modulated signal Expired CA1016647A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA230,897A CA1016647A (en) 1975-07-07 1975-07-07 Apparatus for scrambling and unscrambling an amplitude modulated signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA230,897A CA1016647A (en) 1975-07-07 1975-07-07 Apparatus for scrambling and unscrambling an amplitude modulated signal

Publications (1)

Publication Number Publication Date
CA1016647A true CA1016647A (en) 1977-08-30

Family

ID=4103545

Family Applications (1)

Application Number Title Priority Date Filing Date
CA230,897A Expired CA1016647A (en) 1975-07-07 1975-07-07 Apparatus for scrambling and unscrambling an amplitude modulated signal

Country Status (1)

Country Link
CA (1) CA1016647A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013973A1 (en) * 1989-05-01 1990-11-15 Scientific-Atlanta, Inc. An improved scrambler with self-calibration
US5177787A (en) * 1989-05-01 1993-01-05 Scientific-Atlanta, Inc Scrambler with self-calibration

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013973A1 (en) * 1989-05-01 1990-11-15 Scientific-Atlanta, Inc. An improved scrambler with self-calibration
GB2247808A (en) * 1989-05-01 1992-03-11 Scientific Atlanta An improved scrambler with self-calibration
US5177787A (en) * 1989-05-01 1993-01-05 Scientific-Atlanta, Inc Scrambler with self-calibration
GB2247808B (en) * 1989-05-01 1994-05-18 Scientific Atlanta An improved scrambler with self-calibration

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19940830