FR867150A - Method for scrambling radio broadcasts and its means of implementation - Google Patents

Method for scrambling radio broadcasts and its means of implementation

Info

Publication number
FR867150A
FR867150A FR867150DA FR867150A FR 867150 A FR867150 A FR 867150A FR 867150D A FR867150D A FR 867150DA FR 867150 A FR867150 A FR 867150A
Authority
FR
France
Prior art keywords
implementation
radio broadcasts
scrambling radio
scrambling
broadcasts
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
Other languages
French (fr)
Inventor
Denis Biron
Jean Biron
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 filed Critical
Application granted granted Critical
Publication of FR867150A publication Critical patent/FR867150A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/46—Jamming having variable characteristics characterized in that the jamming signal is produced by retransmitting a received signal, after delay or processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/60—Jamming involving special techniques
    • H04K3/68—Jamming involving special techniques using passive jamming, e.g. by shielding or reflection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/12—Jamming or countermeasure used for a particular application for acoustic communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR867150D 1940-06-01 1940-06-01 Method for scrambling radio broadcasts and its means of implementation Expired FR867150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR867150T 1940-06-01

Publications (1)

Publication Number Publication Date
FR867150A true FR867150A (en) 1941-10-01

Family

ID=9345454

Family Applications (1)

Application Number Title Priority Date Filing Date
FR867150D Expired FR867150A (en) 1940-06-01 1940-06-01 Method for scrambling radio broadcasts and its means of implementation

Country Status (1)

Country Link
FR (1) FR867150A (en)

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