DK140914B - DEVICE FOR CRYPTOPHONIC TRANSMISSION OF SPEECH SIGNALS - Google Patents

DEVICE FOR CRYPTOPHONIC TRANSMISSION OF SPEECH SIGNALS

Info

Publication number
DK140914B
DK140914B DK328275AA DK328275A DK140914B DK 140914 B DK140914 B DK 140914B DK 328275A A DK328275A A DK 328275AA DK 328275 A DK328275 A DK 328275A DK 140914 B DK140914 B DK 140914B
Authority
DK
Denmark
Prior art keywords
cryptophonic
transmission
speech signals
speech
signals
Prior art date
Application number
DK328275AA
Other languages
Danish (da)
Other versions
DK328275A (en
DK140914C (en
Inventor
H Bendel
H Sontheim
Original Assignee
Siemens 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
Priority claimed from DE19742434877 external-priority patent/DE2434877C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of DK328275A publication Critical patent/DK328275A/en
Publication of DK140914B publication Critical patent/DK140914B/en
Application granted granted Critical
Publication of DK140914C publication Critical patent/DK140914C/en

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)
  • Time-Division Multiplex Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Television Systems (AREA)
  • Transmitters (AREA)
DK328275A 1974-07-19 1975-07-18 DEVICE FOR CRYPTONIC TRANSFER OF SPEECH SIGNALS DK140914C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742434877 DE2434877C3 (en) 1974-07-19 Device for the disguised transmission of speech signals

Publications (3)

Publication Number Publication Date
DK328275A DK328275A (en) 1976-01-20
DK140914B true DK140914B (en) 1979-12-03
DK140914C DK140914C (en) 1980-05-12

Family

ID=5921046

Family Applications (1)

Application Number Title Priority Date Filing Date
DK328275A DK140914C (en) 1974-07-19 1975-07-18 DEVICE FOR CRYPTONIC TRANSFER OF SPEECH SIGNALS

Country Status (16)

Country Link
JP (1) JPS5826706B2 (en)
AT (1) AT341003B (en)
AU (1) AU501260B2 (en)
BE (1) BE831528A (en)
CH (1) CH596716A5 (en)
DK (1) DK140914C (en)
FR (1) FR2285029A1 (en)
GB (1) GB1512696A (en)
IE (1) IE41265B1 (en)
IL (1) IL47692A (en)
IN (1) IN147050B (en)
IT (1) IT1039917B (en)
LU (1) LU73007A1 (en)
NL (1) NL169664C (en)
SE (1) SE410259B (en)
ZA (1) ZA754406B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission
CA1226914A (en) * 1984-01-26 1987-09-15 The University Of British Columbia Modem for pseudo noise communication on a.c. lines
JP2761281B2 (en) * 1990-05-17 1998-06-04 富士通株式会社 Encrypted communication method for multi-carrier communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1278172A (en) * 1960-10-28 1961-12-08 Cie Ind Des Telephones Electronic coding device for radio or telephone links
FR2129013A5 (en) * 1971-03-11 1972-10-27 Snecma
GB1465923A (en) * 1973-04-03 1977-03-02 Siemens Ag Camouflaged speech signal transmission systems

Also Published As

Publication number Publication date
JPS5826706B2 (en) 1983-06-04
NL169664B (en) 1982-03-01
DK328275A (en) 1976-01-20
AU8290875A (en) 1977-01-13
FR2285029B1 (en) 1977-12-16
GB1512696A (en) 1978-06-01
SE7508246L (en) 1976-01-20
FR2285029A1 (en) 1976-04-09
DE2434877B2 (en) 1976-05-13
IE41265B1 (en) 1979-11-21
DK140914C (en) 1980-05-12
CH596716A5 (en) 1978-03-15
ATA526575A (en) 1977-05-15
IN147050B (en) 1979-10-27
AU501260B2 (en) 1979-06-14
LU73007A1 (en) 1976-07-01
NL169664C (en) 1982-08-02
JPS5134603A (en) 1976-03-24
NL7508643A (en) 1976-01-21
AT341003B (en) 1978-01-10
IT1039917B (en) 1979-12-10
DE2434877A1 (en) 1976-01-29
IL47692A0 (en) 1975-12-31
ZA754406B (en) 1976-06-30
SE410259B (en) 1979-10-01
IL47692A (en) 1977-11-30
IE41265L (en) 1976-01-19
BE831528A (en) 1976-01-19

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Legal Events

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PBP Patent lapsed