DE3164136D1 - Method of transforming speech signals subdivided into signal segments for enciphered transmission, and apparatus for realizing this method - Google Patents

Method of transforming speech signals subdivided into signal segments for enciphered transmission, and apparatus for realizing this method

Info

Publication number
DE3164136D1
DE3164136D1 DE8181104666T DE3164136T DE3164136D1 DE 3164136 D1 DE3164136 D1 DE 3164136D1 DE 8181104666 T DE8181104666 T DE 8181104666T DE 3164136 T DE3164136 T DE 3164136T DE 3164136 D1 DE3164136 D1 DE 3164136D1
Authority
DE
Germany
Prior art keywords
realizing
speech signals
signal segments
enciphered transmission
transforming speech
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
DE8181104666T
Other languages
English (en)
Inventor
Caflisch Dr Mengia
Richard Dr Weber
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.)
CRYPTO AG
Original Assignee
CRYPTO 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
Application filed by CRYPTO AG filed Critical CRYPTO AG
Application granted granted Critical
Publication of DE3164136D1 publication Critical patent/DE3164136D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Communication Control (AREA)
DE8181104666T 1980-06-20 1981-06-17 Method of transforming speech signals subdivided into signal segments for enciphered transmission, and apparatus for realizing this method Expired DE3164136D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH476380 1980-06-20

Publications (1)

Publication Number Publication Date
DE3164136D1 true DE3164136D1 (en) 1984-07-19

Family

ID=4282095

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181104666T Expired DE3164136D1 (en) 1980-06-20 1981-06-17 Method of transforming speech signals subdivided into signal segments for enciphered transmission, and apparatus for realizing this method

Country Status (10)

Country Link
EP (1) EP0042587B1 (de)
JP (1) JPS5729100A (de)
AR (1) AR228273A1 (de)
AT (1) ATE7993T1 (de)
BR (1) BR8103891A (de)
DE (1) DE3164136D1 (de)
DK (1) DK271481A (de)
ES (1) ES8303853A1 (de)
FI (1) FI811862L (de)
NO (1) NO812082L (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111441A (ja) * 1982-12-17 1984-06-27 Sony Corp 音声信号の秘話方式
JPS59127442A (ja) * 1983-01-11 1984-07-23 Sony Corp 音声信号の秘話方式
FR2541060B1 (fr) * 1983-02-16 1989-02-03 Electroniques Et Const Procede de brouillage d'informations a transmettre d'un poste emetteur a un poste recepteur
EP0219559B1 (de) * 1985-10-17 1990-09-05 ANT Nachrichtentechnik GmbH Mobilfunksystem für die Übertragung sowohl digitaler als auch analoger Signale
FR2625391A1 (fr) * 1987-12-23 1989-06-30 Radiotechnique Ind & Comm Procede et systeme de brouillage/desembrouillage du son
JPH0314853U (de) * 1989-06-28 1991-02-14

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407196A (en) * 1971-11-16 1975-09-24 British Broadcasting Corp Apparatus for changing signal pitch
US3819852A (en) * 1972-08-29 1974-06-25 P Wolf Method of reducing the interference signals during the transmission of af signals in time-compressed form
DE2834280A1 (de) * 1978-08-04 1980-02-21 Siemens Ag Anordnung zur durchfuehrung einer verschleierten uebertragung von informationen

Also Published As

Publication number Publication date
DK271481A (da) 1981-12-21
EP0042587B1 (de) 1984-06-13
JPS5729100A (en) 1982-02-16
BR8103891A (pt) 1982-03-09
NO812082L (no) 1981-12-21
ES503158A0 (es) 1983-02-01
FI811862L (fi) 1981-12-21
ES8303853A1 (es) 1983-02-01
AR228273A1 (es) 1983-02-15
EP0042587A1 (de) 1981-12-30
ATE7993T1 (de) 1984-06-15

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee