FR1235758A - Procédé de camouflage de signaux de transmission - Google Patents

Procédé de camouflage de signaux de transmission

Info

Publication number
FR1235758A
FR1235758A FR39694A FR69039694A FR1235758A FR 1235758 A FR1235758 A FR 1235758A FR 39694 A FR39694 A FR 39694A FR 69039694 A FR69039694 A FR 69039694A FR 1235758 A FR1235758 A FR 1235758A
Authority
FR
France
Prior art keywords
transmission signal
camouflage method
camouflage
transmission
signal
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
FR39694A
Other languages
English (en)
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR1235758A publication Critical patent/FR1235758A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
FR39694A 1958-08-23 1959-08-21 Procédé de camouflage de signaux de transmission Expired FR1235758A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH361597T 1958-08-23

Publications (1)

Publication Number Publication Date
FR1235758A true FR1235758A (fr) 1960-07-08

Family

ID=600366

Family Applications (1)

Application Number Title Priority Date Filing Date
FR39694A Expired FR1235758A (fr) 1958-08-23 1959-08-21 Procédé de camouflage de signaux de transmission

Country Status (4)

Country Link
US (1) US3133991A (fr)
CH (1) CH361597A (fr)
DE (1) DE1116749B (fr)
FR (1) FR1235758A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH411030A (de) * 1964-08-06 1966-04-15 Patelhold Patentverwertung Einrichtung zur Verschlüsselung einer impulsförmigen Nachricht
US4361729A (en) * 1968-01-24 1982-11-30 American Standard Inc. Narrowband analog message privacy system
CH574692A5 (fr) * 1973-02-13 1976-04-15 Gretag Ag
US4068094A (en) * 1973-02-13 1978-01-10 Gretag Aktiengesellschaft Method and apparatus for the scrambled transmission of spoken information via a telephony channel
CH559483A5 (fr) * 1973-06-12 1975-02-28 Patelhold Patentverwertung
CH580893A5 (fr) * 1973-07-02 1976-10-15 Gretag Ag
DE2339685C2 (de) * 1973-08-06 1982-06-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zum verschleierten Übertragen von Nachrichtensignalen
CH578807A5 (fr) * 1974-11-05 1976-08-13 Patelhold Patentverwertung
US4398062A (en) * 1976-11-11 1983-08-09 Harris Corporation Apparatus for privacy transmission in system having bandwidth constraint
DE3127843A1 (de) * 1981-07-15 1983-05-26 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur verhinderung von "kompromittierender abstrahlung" bei der verarbeitung und uebertragung geheimer dateninformationen
US4573205A (en) * 1983-08-22 1986-02-25 At&T Bell Laboratories Technique for secure communications on FM radio channels
DE19910184A1 (de) * 1999-03-09 2000-09-14 Deutsche Telekom Ag Verfahren zur Erhöhung der Datensicherheit von Implementierungen kryptographischer Algorithmen
DE19921633A1 (de) * 1999-05-10 2000-11-16 Deutsche Telekom Ag Verfahren zur Implementierung kryptographischer Algorithmen
AU2001278163A1 (en) * 2000-08-09 2002-02-18 Avway.Com Inc. Method and system for steganographically embedding information bits in source signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266194A (en) * 1938-01-30 1941-12-16 Radio Patents Corp Television system
US2836657A (en) * 1944-11-20 1958-05-27 Gen Electric Secrecy communication system

Also Published As

Publication number Publication date
US3133991A (en) 1964-05-19
CH361597A (de) 1962-04-30
DE1116749B (de) 1961-11-09

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