CA1186380A - Methode de transposition de sous-bandes - Google Patents

Methode de transposition de sous-bandes

Info

Publication number
CA1186380A
CA1186380A CA000395659A CA395659A CA1186380A CA 1186380 A CA1186380 A CA 1186380A CA 000395659 A CA000395659 A CA 000395659A CA 395659 A CA395659 A CA 395659A CA 1186380 A CA1186380 A CA 1186380A
Authority
CA
Canada
Prior art keywords
sub
modulators
bands
band
frequency
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
CA000395659A
Other languages
English (en)
Inventor
Heinz Gockler
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik 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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Application granted granted Critical
Publication of CA1186380A publication Critical patent/CA1186380A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
CA000395659A 1981-02-13 1982-02-05 Methode de transposition de sous-bandes Expired CA1186380A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3105214.2 1981-02-13
DE19813105214 DE3105214A1 (de) 1981-02-13 1981-02-13 "teilbandvertauschungsverfahren"

Publications (1)

Publication Number Publication Date
CA1186380A true CA1186380A (fr) 1985-04-30

Family

ID=6124771

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000395659A Expired CA1186380A (fr) 1981-02-13 1982-02-05 Methode de transposition de sous-bandes

Country Status (7)

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

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
ES509565A0 (es) 1982-12-16
PT74410A (de) 1982-03-01
EP0058318B1 (fr) 1984-08-08
ES8302387A1 (es) 1982-12-16
EP0058318A1 (fr) 1982-08-25
FI820393L (fi) 1982-08-14
DE3105214A1 (de) 1982-09-09
DE3260506D1 (en) 1984-09-13
DK52682A (da) 1982-08-14
PT74410B (de) 1983-10-28

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Legal Events

Date Code Title Description
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