AU501260B2 - Secret transmission - Google Patents

Secret transmission

Info

Publication number
AU501260B2
AU501260B2 AU82908/75A AU8290875A AU501260B2 AU 501260 B2 AU501260 B2 AU 501260B2 AU 82908/75 A AU82908/75 A AU 82908/75A AU 8290875 A AU8290875 A AU 8290875A AU 501260 B2 AU501260 B2 AU 501260B2
Authority
AU
Australia
Prior art keywords
secret transmission
secret
transmission
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
AU82908/75A
Other languages
English (en)
Other versions
AU8290875A (en
Inventor
H. & Sondheim H Bendel
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.)
Siemens AG
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/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of AU8290875A publication Critical patent/AU8290875A/en
Application granted granted Critical
Publication of AU501260B2 publication Critical patent/AU501260B2/en
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)
  • Time-Division Multiplex Systems (AREA)
  • Transmitters (AREA)
  • Television Systems (AREA)
AU82908/75A 1974-07-19 1975-07-10 Secret transmission Expired AU501260B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE2434877 1974-07-19
DE19742434877 DE2434877C3 (de) 1974-07-19 Einrichtung zur verschleierten übertragung von Sprachsignalen

Publications (2)

Publication Number Publication Date
AU8290875A AU8290875A (en) 1977-01-13
AU501260B2 true AU501260B2 (en) 1979-06-14

Family

ID=5921046

Family Applications (1)

Application Number Title Priority Date Filing Date
AU82908/75A Expired AU501260B2 (en) 1974-07-19 1975-07-10 Secret transmission

Country Status (16)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU628739B2 (en) * 1990-05-17 1992-09-17 Fujitsu Limited Multi-carrier communication system using ciphered carrier bit assignment information

Families Citing this family (2)

* 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1278172A (fr) * 1960-10-28 1961-12-08 Cie Ind Des Telephones Dispositif électronique de codage pour liaisons radioélectriques ou téléphoniques
FR2129013A5 (nl) * 1971-03-11 1972-10-27 Snecma
GB1465923A (en) * 1973-04-03 1977-03-02 Siemens Ag Camouflaged speech signal transmission systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU628739B2 (en) * 1990-05-17 1992-09-17 Fujitsu Limited Multi-carrier communication system using ciphered carrier bit assignment information

Also Published As

Publication number Publication date
DE2434877A1 (de) 1976-01-29
IE41265L (en) 1976-01-19
FR2285029A1 (fr) 1976-04-09
DK140914B (da) 1979-12-03
NL169664B (nl) 1982-03-01
IE41265B1 (en) 1979-11-21
DE2434877B2 (de) 1976-05-13
CH596716A5 (nl) 1978-03-15
SE7508246L (sv) 1976-01-20
LU73007A1 (nl) 1976-07-01
FR2285029B1 (nl) 1977-12-16
JPS5134603A (nl) 1976-03-24
GB1512696A (en) 1978-06-01
SE410259B (sv) 1979-10-01
BE831528A (fr) 1976-01-19
DK328275A (da) 1976-01-20
ATA526575A (de) 1977-05-15
IN147050B (nl) 1979-10-27
DK140914C (da) 1980-05-12
IT1039917B (it) 1979-12-10
AU8290875A (en) 1977-01-13
IL47692A (en) 1977-11-30
NL169664C (nl) 1982-08-02
NL7508643A (nl) 1976-01-21
ZA754406B (en) 1976-06-30
JPS5826706B2 (ja) 1983-06-04
AT341003B (de) 1978-01-10
IL47692A0 (en) 1975-12-31

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