SE305470B - - Google Patents

Info

Publication number
SE305470B
SE305470B SE8919/67A SE891967A SE305470B SE 305470 B SE305470 B SE 305470B SE 8919/67 A SE8919/67 A SE 8919/67A SE 891967 A SE891967 A SE 891967A SE 305470 B SE305470 B SE 305470B
Authority
SE
Sweden
Application number
SE8919/67A
Inventor
A Jacobaeus
Original Assignee
Ericsson Telefon Ab L M
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
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE8919/67A priority Critical patent/SE305470B/xx
Priority to US732994A priority patent/US3504286A/en
Priority to DE19681762441 priority patent/DE1762441A1/de
Priority to GB1227215D priority patent/GB1227215A/en
Priority to NL6808682A priority patent/NL6808682A/xx
Publication of SE305470B publication Critical patent/SE305470B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
SE8919/67A 1967-06-21 1967-06-21 SE305470B (xx)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8919/67A SE305470B (xx) 1967-06-21 1967-06-21
US732994A US3504286A (en) 1967-06-21 1968-05-29 Method of transmitting speech in ciphered form and arrangement for carrying out the method
DE19681762441 DE1762441A1 (de) 1967-06-21 1968-06-19 Verfahren zum UEbertragen von Sprache in chiffreierter Form und Anordnung zur Durchfuehrung des Verfahrens
GB1227215D GB1227215A (xx) 1967-06-21 1968-06-20
NL6808682A NL6808682A (xx) 1967-06-21 1968-06-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8919/67A SE305470B (xx) 1967-06-21 1967-06-21

Publications (1)

Publication Number Publication Date
SE305470B true SE305470B (xx) 1968-10-28

Family

ID=20275361

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8919/67A SE305470B (xx) 1967-06-21 1967-06-21

Country Status (5)

Country Link
US (1) US3504286A (xx)
DE (1) DE1762441A1 (xx)
GB (1) GB1227215A (xx)
NL (1) NL6808682A (xx)
SE (1) SE305470B (xx)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH572650A5 (xx) * 1972-12-21 1976-02-13 Gretag Ag
US4086435A (en) * 1976-09-17 1978-04-25 Biosystems Research Group Ii Method of and means for scrambling and descrambling speech at audio frequencies
US4126761A (en) * 1977-02-11 1978-11-21 Daniel Graupe Method of and means for processing an audio frequency signal to conceal intelligility
US4156107A (en) * 1978-02-03 1979-05-22 Bell Telephone Laboratories, Incorporated Speech signal scrambler
US4367456A (en) * 1979-03-09 1983-01-04 Northern Telecom Limited PCM and PAM Conversion circuit including signal level variation on the PCM portion of the circuit
JPS59126342A (ja) * 1983-01-10 1984-07-20 Nec Corp デジタル音声信号伝送方式
CA1226914A (en) * 1984-01-26 1987-09-15 The University Of British Columbia Modem for pseudo noise communication on a.c. lines
FR2606237B1 (fr) * 1986-10-31 1988-12-09 Trt Telecom Radio Electr Dispositif de cryptophonie analogique a permutations dynamiques de bande
US5581614A (en) * 1991-08-19 1996-12-03 Index Systems, Inc. Method for encrypting and embedding information in a video program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH311424A (de) * 1950-04-22 1955-11-30 Gretener Edgar Ing Dr Verfahren zur Geheimhaltung von Sprache in Nachrichtenübermittlungskanälen.

Also Published As

Publication number Publication date
US3504286A (en) 1970-03-31
GB1227215A (xx) 1971-04-07
DE1762441A1 (de) 1970-04-30
NL6808682A (xx) 1968-12-23

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