IL47692A - Method and apparatus for the camouflaged transmission of signals - Google Patents

Method and apparatus for the camouflaged transmission of signals

Info

Publication number
IL47692A
IL47692A IL47692A IL4769275A IL47692A IL 47692 A IL47692 A IL 47692A IL 47692 A IL47692 A IL 47692A IL 4769275 A IL4769275 A IL 4769275A IL 47692 A IL47692 A IL 47692A
Authority
IL
Israel
Prior art keywords
element length
sequence
code sequence
code
sequence generator
Prior art date
Application number
IL47692A
Other languages
English (en)
Other versions
IL47692A0 (en
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 IL47692A0 publication Critical patent/IL47692A0/xx
Publication of IL47692A publication Critical patent/IL47692A/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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transmitters (AREA)
  • Television Systems (AREA)
IL47692A 1974-07-19 1975-07-11 Method and apparatus for the camouflaged transmission of signals IL47692A (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IL47692A0 IL47692A0 (en) 1975-12-31
IL47692A true IL47692A (en) 1977-11-30

Family

ID=5921046

Family Applications (1)

Application Number Title Priority Date Filing Date
IL47692A IL47692A (en) 1974-07-19 1975-07-11 Method and apparatus for the camouflaged transmission of signals

Country Status (16)

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

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 (ja) * 1990-05-17 1998-06-04 富士通株式会社 マルチキャリア通信システムの暗号化通信方式

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 (xx) * 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
DE2434877A1 (de) 1976-01-29
IE41265L (en) 1976-01-19
AU501260B2 (en) 1979-06-14
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 (xx) 1978-03-15
SE7508246L (sv) 1976-01-20
LU73007A1 (xx) 1976-07-01
FR2285029B1 (xx) 1977-12-16
JPS5134603A (xx) 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 (xx) 1979-10-27
DK140914C (da) 1980-05-12
IT1039917B (it) 1979-12-10
AU8290875A (en) 1977-01-13
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

Similar Documents

Publication Publication Date Title
DE2124320C1 (de) Elektrische Schaltung zur Erzeugung einer Vielzahl verschiedener Codes
US4145568A (en) Method and apparatus for ciphering and deciphering messages
IL141787A (en) Device and method for generating shuffle code in a portable UMTS communication system
SE528101C2 (sv) CDMA-spridningskrets med variabel rat
US2934604A (en) Synchronism correcting device for a multi-channel telegraphy installation
US3808365A (en) Method and apparatus for encoding and decoding messages
US2559644A (en) Pulse multiplex system
US2527650A (en) Synchronization of pulse transmission systems
IL47692A (en) Method and apparatus for the camouflaged transmission of signals
US2632057A (en) Signal transmission
US2570207A (en) Synchronizing arrangement for multiplex electrical pulse communication systems
US3435148A (en) Time division multiplex pulse code modulation communication system by pulse distribution transmission
US2503371A (en) Selective signaling system
EP0063332B1 (de) Einrichtung zur verschlüsselten digitalen Informationsübertragung
RU2553055C1 (ru) Передатчик с кодовым разделением каналов с высокой структурной скрытностью передаваемых сигналов
US3920897A (en) Electric pulse train generators and frequency synthesisers
KR101872738B1 (ko) 동기화된 주파수 도약 통신시스템에서 주파수 도약 속도가 상이한 다중 주파수 도약 신호간 직교성 처리 방법
US3924075A (en) Two-way privacy system terminal with single key pulse generator means
US4223182A (en) Transmission of signals with privacy
US5280497A (en) Communicating on wandering channels
US1369805A (en) Secret-communication system
CA1097753A (en) Pulse controlled switching circuits
Thrasher A new method for frequency-division multiplexing, and its integration with time-division switching
US3953678A (en) Speech component key signaling system with code combinations
SU824261A1 (ru) Устройство дл телеуправлени иТЕлЕСигНАлизАции пО СилОВыМРАСпРЕдЕлиТЕльНыМ СЕТ М