IT1039917B - DEVICE FOR THE TRANSMISSION OF ALTERED VOICE SIGNALS - Google Patents

DEVICE FOR THE TRANSMISSION OF ALTERED VOICE SIGNALS

Info

Publication number
IT1039917B
IT1039917B IT25534/75A IT2553475A IT1039917B IT 1039917 B IT1039917 B IT 1039917B IT 25534/75 A IT25534/75 A IT 25534/75A IT 2553475 A IT2553475 A IT 2553475A IT 1039917 B IT1039917 B IT 1039917B
Authority
IT
Italy
Prior art keywords
transmission
voice signals
altered voice
altered
signals
Prior art date
Application number
IT25534/75A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1039917B publication Critical patent/IT1039917B/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)
  • Transmitters (AREA)
  • Television Systems (AREA)
IT25534/75A 1974-07-19 1975-07-18 DEVICE FOR THE TRANSMISSION OF ALTERED VOICE SIGNALS IT1039917B (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 (1)

Publication Number Publication Date
IT1039917B true IT1039917B (en) 1979-12-10

Family

ID=5921046

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25534/75A IT1039917B (en) 1974-07-19 1975-07-18 DEVICE FOR THE TRANSMISSION OF ALTERED VOICE 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
DK140914B (en) 1979-12-03
NL169664C (en) 1982-08-02
CH596716A5 (en) 1978-03-15
BE831528A (en) 1976-01-19
IL47692A (en) 1977-11-30
LU73007A1 (en) 1976-07-01
DK328275A (en) 1976-01-20
JPS5134603A (en) 1976-03-24
IE41265B1 (en) 1979-11-21
ZA754406B (en) 1976-06-30
AT341003B (en) 1978-01-10
IE41265L (en) 1976-01-19
IN147050B (en) 1979-10-27
NL7508643A (en) 1976-01-21
NL169664B (en) 1982-03-01
SE7508246L (en) 1976-01-20
AU8290875A (en) 1977-01-13
FR2285029B1 (en) 1977-12-16
DE2434877B2 (en) 1976-05-13
DK140914C (en) 1980-05-12
GB1512696A (en) 1978-06-01
ATA526575A (en) 1977-05-15
IL47692A0 (en) 1975-12-31
SE410259B (en) 1979-10-01
DE2434877A1 (en) 1976-01-29
AU501260B2 (en) 1979-06-14
FR2285029A1 (en) 1976-04-09
JPS5826706B2 (en) 1983-06-04

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