BE831528A - DEVICE FOR THE MASKED TRANSMISSION OF CONVERSATION SIGNALS - Google Patents

DEVICE FOR THE MASKED TRANSMISSION OF CONVERSATION SIGNALS

Info

Publication number
BE831528A
BE831528A BE158435A BE158435A BE831528A BE 831528 A BE831528 A BE 831528A BE 158435 A BE158435 A BE 158435A BE 158435 A BE158435 A BE 158435A BE 831528 A BE831528 A BE 831528A
Authority
BE
Belgium
Prior art keywords
conversation signals
masked
transmission
masked transmission
conversation
Prior art date
Application number
BE158435A
Other languages
French (fr)
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 filed Critical
Publication of BE831528A publication Critical patent/BE831528A/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)
BE158435A 1974-07-19 1975-07-18 DEVICE FOR THE MASKED TRANSMISSION OF CONVERSATION SIGNALS BE831528A (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
BE831528A true BE831528A (en) 1976-01-19

Family

ID=5921046

Family Applications (1)

Application Number Title Priority Date Filing Date
BE158435A BE831528A (en) 1974-07-19 1975-07-18 DEVICE FOR THE MASKED TRANSMISSION OF CONVERSATION 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
IT1039917B (en) 1979-12-10
AU501260B2 (en) 1979-06-14
FR2285029B1 (en) 1977-12-16
AU8290875A (en) 1977-01-13
IE41265B1 (en) 1979-11-21
LU73007A1 (en) 1976-07-01
NL7508643A (en) 1976-01-21
IL47692A (en) 1977-11-30
GB1512696A (en) 1978-06-01
NL169664B (en) 1982-03-01
DK328275A (en) 1976-01-20
SE410259B (en) 1979-10-01
SE7508246L (en) 1976-01-20
ATA526575A (en) 1977-05-15
NL169664C (en) 1982-08-02
IL47692A0 (en) 1975-12-31
DE2434877B2 (en) 1976-05-13
DE2434877A1 (en) 1976-01-29
FR2285029A1 (en) 1976-04-09
AT341003B (en) 1978-01-10
DK140914B (en) 1979-12-03
IE41265L (en) 1976-01-19
JPS5134603A (en) 1976-03-24
DK140914C (en) 1980-05-12
CH596716A5 (en) 1978-03-15
IN147050B (en) 1979-10-27
JPS5826706B2 (en) 1983-06-04
ZA754406B (en) 1976-06-30

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: SIEMENS A.G.

Effective date: 19840718