FR768022A - Method and apparatus for high-frequency electrical communication ensuring the secrecy of correspondence and avoiding atmospheric disturbances - Google Patents

Method and apparatus for high-frequency electrical communication ensuring the secrecy of correspondence and avoiding atmospheric disturbances

Info

Publication number
FR768022A
FR768022A FR768022DA FR768022A FR 768022 A FR768022 A FR 768022A FR 768022D A FR768022D A FR 768022DA FR 768022 A FR768022 A FR 768022A
Authority
FR
France
Prior art keywords
secrecy
correspondence
electrical communication
frequency electrical
atmospheric disturbances
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
Emanuele Boselli
Carlo Carnevali
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 FR768022A publication Critical patent/FR768022A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/006—Secret communication by varying or inverting the phase, at periodic or random intervals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Small-Scale Networks (AREA)
FR768022D 1933-01-18 1934-01-17 Method and apparatus for high-frequency electrical communication ensuring the secrecy of correspondence and avoiding atmospheric disturbances Expired FR768022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT431794X 1933-01-18

Publications (1)

Publication Number Publication Date
FR768022A true FR768022A (en) 1934-07-30

Family

ID=11254797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR768022D Expired FR768022A (en) 1933-01-18 1934-01-17 Method and apparatus for high-frequency electrical communication ensuring the secrecy of correspondence and avoiding atmospheric disturbances

Country Status (2)

Country Link
FR (1) FR768022A (en)
GB (1) GB431794A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425020A (en) * 1943-04-16 1947-08-05 Standard Telephones Cables Ltd Interference reducing radio system
US2426225A (en) * 1944-04-20 1947-08-26 Standard Telephones Cables Ltd Communication system
US2472706A (en) * 1943-07-03 1949-06-07 Rca Corp Pulse transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425020A (en) * 1943-04-16 1947-08-05 Standard Telephones Cables Ltd Interference reducing radio system
US2472706A (en) * 1943-07-03 1949-06-07 Rca Corp Pulse transmission system
US2426225A (en) * 1944-04-20 1947-08-26 Standard Telephones Cables Ltd Communication system

Also Published As

Publication number Publication date
GB431794A (en) 1935-07-16

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