NL7602959A - DEVICE FOR THE SECRET TRANSMISSION OF VOICE SIGNALS. - Google Patents

DEVICE FOR THE SECRET TRANSMISSION OF VOICE SIGNALS.

Info

Publication number
NL7602959A
NL7602959A NL7602959A NL7602959A NL7602959A NL 7602959 A NL7602959 A NL 7602959A NL 7602959 A NL7602959 A NL 7602959A NL 7602959 A NL7602959 A NL 7602959A NL 7602959 A NL7602959 A NL 7602959A
Authority
NL
Netherlands
Prior art keywords
voice signals
secret transmission
secret
transmission
voice
Prior art date
Application number
NL7602959A
Other languages
Dutch (nl)
Other versions
NL171003B (en
NL171003C (en
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 NL7602959A publication Critical patent/NL7602959A/en
Publication of NL171003B publication Critical patent/NL171003B/en
Application granted granted Critical
Publication of NL171003C publication Critical patent/NL171003C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
NLAANVRAGE7602959,A 1975-05-30 1976-03-22 SYSTEM FOR THE SECRET TRANSFER OF VOICE SIGNALS. NL171003C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2523828A DE2523828C2 (en) 1975-05-30 1975-05-30 Method for obfuscating speech signals with the aid of orthogonal matrices

Publications (3)

Publication Number Publication Date
NL7602959A true NL7602959A (en) 1976-12-02
NL171003B NL171003B (en) 1982-08-16
NL171003C NL171003C (en) 1983-01-17

Family

ID=5947713

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7602959,A NL171003C (en) 1975-05-30 1976-03-22 SYSTEM FOR THE SECRET TRANSFER OF VOICE SIGNALS.

Country Status (11)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811635A1 (en) * 1978-03-17 1979-09-20 Tekade Felten & Guilleaume PSEUDO-ACCESSIBLE PRODUCTION OF ORTHOGONAL MATRICES FOR ENCYCLING PURPOSES
CH649181A5 (en) * 1980-02-01 1985-04-30 Schweiz Eidgenossenschaft METHOD AND CIRCUIT FOR SECURED transmitting voice signals.
JP3724676B2 (en) * 1997-03-10 2005-12-07 ソニー株式会社 COMMUNICATION METHOD, TRANSMISSION DEVICE, AND RECEPTION DEVICE
JPH1168696A (en) * 1997-08-19 1999-03-09 Sony Corp Communication method, transmission equipment, reception equipment and cellular radio communication system
CN110489989A (en) * 2019-08-27 2019-11-22 深圳市道通智能航空技术有限公司 Data encrypting/de-encrypling method, its encryption/deciphering chip and its unmanned plane

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232786A (en) * 1939-07-14 1944-06-15 Patelhold Patentverwertung Device for secret messaging.
CH237094A (en) * 1939-07-26 1945-03-31 Patelhold Patentverwertung Method and device for the transmission of messages to be kept secret.
NL63459C (en) * 1943-04-05
CH246844A (en) * 1945-09-15 1947-01-31 Patelhold Patentverwertung Method and device for obfuscating electrically transmitted voice messages.
FR1582036A (en) * 1968-03-15 1969-09-26

Also Published As

Publication number Publication date
DE2523828B1 (en) 1976-11-25
FR2312895A1 (en) 1976-12-24
SE7605731L (en) 1976-12-01
AU501272B2 (en) 1979-06-14
ZA763090B (en) 1978-01-25
NL171003B (en) 1982-08-16
FR2312895B1 (en) 1982-06-11
NL171003C (en) 1983-01-17
BE842316A (en) 1976-09-16
DE2523828C2 (en) 1982-08-12
SE409798B (en) 1979-09-03
ATA391676A (en) 1979-01-15
AU1437276A (en) 1977-12-01
CH613575A5 (en) 1979-09-28
DK155076A (en) 1976-12-01
DK139408C (en) 1979-07-30
AT351603B (en) 1979-08-10
DK139408B (en) 1979-02-12
GB1522062A (en) 1978-08-23

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee