FI820393L - Delbandsvaexlingsfoerfarande - Google Patents

Delbandsvaexlingsfoerfarande

Info

Publication number
FI820393L
FI820393L FI820393A FI820393A FI820393L FI 820393 L FI820393 L FI 820393L FI 820393 A FI820393 A FI 820393A FI 820393 A FI820393 A FI 820393A FI 820393 L FI820393 L FI 820393L
Authority
FI
Finland
Prior art keywords
delbandsvaexlingsfoerfarande
Prior art date
Application number
FI820393A
Other languages
English (en)
Inventor
Heinz Goeckler
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of FI820393L publication Critical patent/FI820393L/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
FI820393A 1981-02-13 1982-02-08 Delbandsvaexlingsfoerfarande FI820393L (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813105214 DE3105214A1 (de) 1981-02-13 1981-02-13 "teilbandvertauschungsverfahren"

Publications (1)

Publication Number Publication Date
FI820393L true FI820393L (fi) 1982-08-14

Family

ID=6124771

Family Applications (1)

Application Number Title Priority Date Filing Date
FI820393A FI820393L (fi) 1981-02-13 1982-02-08 Delbandsvaexlingsfoerfarande

Country Status (7)

Country Link
EP (1) EP0058318B1 (fi)
CA (1) CA1186380A (fi)
DE (2) DE3105214A1 (fi)
DK (1) DK52682A (fi)
ES (1) ES8302387A1 (fi)
FI (1) FI820393L (fi)
PT (1) PT74410B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6424648A (en) * 1987-07-21 1989-01-26 Fujitsu Ltd Privacy call equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408692A (en) * 1942-04-29 1946-10-01 Rca Corp Signaling system
CH248975A (de) * 1946-02-04 1947-05-31 Patelhold Patentverwertung Verfahren und Einrichtung zur Verschleierung der einzelnen Gespräche einer Mehrkanalanlage.
DE1273002B (de) * 1963-09-11 1968-07-18 Siemens Ag Einrichtung zur verschluesselten UEbertragung von Sprachsignalen durch Vertauschung von Teilbaendern
DE2652607A1 (de) * 1976-11-19 1978-05-24 Licentia Gmbh Verfahren zum verschleierten uebertragen von nachrichtensignalen

Also Published As

Publication number Publication date
DE3260506D1 (en) 1984-09-13
EP0058318B1 (de) 1984-08-08
DE3105214A1 (de) 1982-09-09
ES509565A0 (es) 1982-12-16
ES8302387A1 (es) 1982-12-16
PT74410B (de) 1983-10-28
PT74410A (de) 1982-03-01
DK52682A (da) 1982-08-14
EP0058318A1 (de) 1982-08-25
CA1186380A (en) 1985-04-30

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Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: LICENTIA PATENT- VERWALTUNGS-G.M.B.H.