CH613575A5 - Method for encrypting analog speech signals with the aid of orthogonal matrices - Google Patents

Method for encrypting analog speech signals with the aid of orthogonal matrices

Info

Publication number
CH613575A5
CH613575A5 CH654276A CH654276A CH613575A5 CH 613575 A5 CH613575 A5 CH 613575A5 CH 654276 A CH654276 A CH 654276A CH 654276 A CH654276 A CH 654276A CH 613575 A5 CH613575 A5 CH 613575A5
Authority
CH
Switzerland
Prior art keywords
encrypting
aid
speech signals
analog speech
orthogonal matrices
Prior art date
Application number
CH654276A
Other languages
English (en)
Inventor
Joerg Robra
Peter Rohm
Gerhard Kaminski
Helmut Gruhl
Original Assignee
Tekade Felten & Guilleaume
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 Tekade Felten & Guilleaume filed Critical Tekade Felten & Guilleaume
Publication of CH613575A5 publication Critical patent/CH613575A5/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)
  • Facsimile Transmission Control (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
CH654276A 1975-05-30 1976-05-24 Method for encrypting analog speech signals with the aid of orthogonal matrices CH613575A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2523828A DE2523828C2 (de) 1975-05-30 1975-05-30 Verfahren zur Verschleierung von Sprachsignalen mit Hilfe orthogonaler Matrizen

Publications (1)

Publication Number Publication Date
CH613575A5 true CH613575A5 (en) 1979-09-28

Family

ID=5947713

Family Applications (1)

Application Number Title Priority Date Filing Date
CH654276A CH613575A5 (en) 1975-05-30 1976-05-24 Method for encrypting analog speech signals with the aid of orthogonal matrices

Country Status (11)

Country Link
AT (1) AT351603B (enExample)
AU (1) AU501272B2 (enExample)
BE (1) BE842316A (enExample)
CH (1) CH613575A5 (enExample)
DE (1) DE2523828C2 (enExample)
DK (1) DK139408C (enExample)
FR (1) FR2312895A1 (enExample)
GB (1) GB1522062A (enExample)
NL (1) NL171003C (enExample)
SE (1) SE409798B (enExample)
ZA (1) ZA763090B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811635A1 (de) * 1978-03-17 1979-09-20 Tekade Felten & Guilleaume Pseudozufaellige erzeugung von orthogonalen matrizen fuer verschluesselungszwecke
CH649181A5 (de) * 1980-02-01 1985-04-30 Schweiz Eidgenossenschaft Verfahren und schaltungsanordnung zur gesicherten uebertragung von sprachsignalen.
JP3724676B2 (ja) * 1997-03-10 2005-12-07 ソニー株式会社 通信方法及び送信装置並びに受信装置
JPH1168696A (ja) * 1997-08-19 1999-03-09 Sony Corp 通信方法及び送信装置及び受信装置並びにセルラー無線通信システム
CN110489989A (zh) * 2019-08-27 2019-11-22 深圳市道通智能航空技术有限公司 数据加密/解密方法、其加密/解密芯片及其无人机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232786A (de) * 1939-07-14 1944-06-15 Patelhold Patentverwertung Einrichtung zur geheimen Nachrichtenübermittlung.
CH237094A (de) * 1939-07-26 1945-03-31 Patelhold Patentverwertung Verfahren und Einrichtung zur Übermittlung von geheimzuhaltenden Nachrichten.
BE455172A (enExample) * 1943-04-05
CH246844A (de) * 1945-09-15 1947-01-31 Patelhold Patentverwertung Verfahren und Einrichtung zur Verschleierung von elektrisch übermittelten Sprachnachrichten.
FR1582036A (enExample) * 1968-03-15 1969-09-26

Also Published As

Publication number Publication date
SE7605731L (sv) 1976-12-01
NL171003B (nl) 1982-08-16
DK139408B (da) 1979-02-12
DK139408C (da) 1979-07-30
FR2312895B1 (enExample) 1982-06-11
ATA391676A (de) 1979-01-15
AU1437276A (en) 1977-12-01
DK155076A (da) 1976-12-01
FR2312895A1 (fr) 1976-12-24
AU501272B2 (en) 1979-06-14
BE842316A (fr) 1976-09-16
NL171003C (nl) 1983-01-17
ZA763090B (en) 1978-01-25
SE409798B (sv) 1979-09-03
AT351603B (de) 1979-08-10
DE2523828B1 (de) 1976-11-25
NL7602959A (nl) 1976-12-02
DE2523828C2 (de) 1982-08-12
GB1522062A (en) 1978-08-23

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased