ATE7993T1 - METHOD FOR TRANSFORMING SPEECH SIGNALS, WHICH ARE DIVIDED INTO SIGNAL SECTIONS FOR ENCRYPTED TRANSMISSION, AND DEVICE FOR CARRYING OUT THE METHOD. - Google Patents

METHOD FOR TRANSFORMING SPEECH SIGNALS, WHICH ARE DIVIDED INTO SIGNAL SECTIONS FOR ENCRYPTED TRANSMISSION, AND DEVICE FOR CARRYING OUT THE METHOD.

Info

Publication number
ATE7993T1
ATE7993T1 AT81104666T AT81104666T ATE7993T1 AT E7993 T1 ATE7993 T1 AT E7993T1 AT 81104666 T AT81104666 T AT 81104666T AT 81104666 T AT81104666 T AT 81104666T AT E7993 T1 ATE7993 T1 AT E7993T1
Authority
AT
Austria
Prior art keywords
divided
carrying
speech signals
encrypted transmission
signal sections
Prior art date
Application number
AT81104666T
Other languages
German (de)
Inventor
Caflisch Dr. Mengia
Richard Dr. Weber
Original Assignee
Crypto Aktiengesellschaft
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 Aktiengesellschaft filed Critical Crypto Aktiengesellschaft
Application granted granted Critical
Publication of ATE7993T1 publication Critical patent/ATE7993T1/en

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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Communication Control (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
AT81104666T 1980-06-20 1981-06-17 METHOD FOR TRANSFORMING SPEECH SIGNALS, WHICH ARE DIVIDED INTO SIGNAL SECTIONS FOR ENCRYPTED TRANSMISSION, AND DEVICE FOR CARRYING OUT THE METHOD. ATE7993T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH476380 1980-06-20
EP81104666A EP0042587B1 (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

Publications (1)

Publication Number Publication Date
ATE7993T1 true ATE7993T1 (en) 1984-06-15

Family

ID=4282095

Family Applications (1)

Application Number Title Priority Date Filing Date
AT81104666T ATE7993T1 (en) 1980-06-20 1981-06-17 METHOD FOR TRANSFORMING SPEECH SIGNALS, WHICH ARE DIVIDED INTO SIGNAL SECTIONS FOR ENCRYPTED TRANSMISSION, AND DEVICE FOR CARRYING OUT THE METHOD.

Country Status (10)

Country Link
EP (1) EP0042587B1 (en)
JP (1) JPS5729100A (en)
AR (1) AR228273A1 (en)
AT (1) ATE7993T1 (en)
BR (1) BR8103891A (en)
DE (1) DE3164136D1 (en)
DK (1) DK271481A (en)
ES (1) ES503158A0 (en)
FI (1) FI811862L (en)
NO (1) NO812082L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111441A (en) * 1982-12-17 1984-06-27 Sony Corp Privacy telephone system of sound signal
JPS59127442A (en) * 1983-01-11 1984-07-23 Sony Corp Scrambling system for voice signal
FR2541060B1 (en) * 1983-02-16 1989-02-03 Electroniques Et Const METHOD OF INTERFERING INFORMATION TO BE TRANSMITTED FROM A TRANSMITTING STATION TO A RECEIVING STATION
EP0219559B1 (en) * 1985-10-17 1990-09-05 ANT Nachrichtentechnik GmbH Mobile radio system for the transmission of digital as well as analogous signals
FR2625391A1 (en) * 1987-12-23 1989-06-30 Radiotechnique Ind & Comm METHOD AND SYSTEM FOR INTERFERING / UNLOCKING SOUND
JPH0314853U (en) * 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 (en) * 1978-08-04 1980-02-21 Siemens Ag Scrambled speech transmission system - divides signals into time elements which are rearranged and read out at higher speed and gaps filled with additional signals

Also Published As

Publication number Publication date
ES8303853A1 (en) 1983-02-01
EP0042587A1 (en) 1981-12-30
DE3164136D1 (en) 1984-07-19
DK271481A (en) 1981-12-21
FI811862L (en) 1981-12-21
NO812082L (en) 1981-12-21
EP0042587B1 (en) 1984-06-13
JPS5729100A (en) 1982-02-16
BR8103891A (en) 1982-03-09
ES503158A0 (en) 1983-02-01
AR228273A1 (en) 1983-02-15

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