GB1515937A - Scrambling speech - Google Patents

Scrambling speech

Info

Publication number
GB1515937A
GB1515937A GB48228/75A GB4822875A GB1515937A GB 1515937 A GB1515937 A GB 1515937A GB 48228/75 A GB48228/75 A GB 48228/75A GB 4822875 A GB4822875 A GB 4822875A GB 1515937 A GB1515937 A GB 1515937A
Authority
GB
United Kingdom
Prior art keywords
speech
sections
nov
register
direct link
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
GB48228/75A
Other languages
English (en)
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.)
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Original Assignee
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
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 and Guilleaume Fernmeldeanlagen GmbH filed Critical Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Publication of GB1515937A publication Critical patent/GB1515937A/en
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)
  • Telephonic Communication Services (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
GB48228/75A 1974-11-23 1975-11-24 Scrambling speech Expired GB1515937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2455477A DE2455477C3 (de) 1974-11-23 1974-11-23 Verfahren zur Sprachverschleierung durch zeitliches Vertauschen der Sprachabschnitte

Publications (1)

Publication Number Publication Date
GB1515937A true GB1515937A (en) 1978-06-28

Family

ID=5931540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48228/75A Expired GB1515937A (en) 1974-11-23 1975-11-24 Scrambling speech

Country Status (10)

Country Link
AT (1) AT343722B (da)
BE (1) BE835826A (da)
CH (1) CH604433A5 (da)
DE (1) DE2455477C3 (da)
DK (1) DK146748C (da)
FR (1) FR2292386A1 (da)
GB (1) GB1515937A (da)
NL (1) NL164165C (da)
SE (1) SE403023B (da)
ZA (1) ZA757335B (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156190A (en) * 1984-01-26 1985-10-02 Univ British Columbia Modem

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704822C3 (de) * 1977-02-05 1980-10-23 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Verfahren zur Sprachverschlüsselung nach dem Zeitverwürfelungsverfahren
DE2809719C3 (de) * 1978-03-07 1985-03-14 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren zur Erhöhung der Sicherheit gegen unbefugte Rückschlüsselung von verschlüsselter Sprache

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076733B (de) * 1958-05-29 1960-03-03 Telefunken Gmbh Anordnung zur Sicherstellung des Synchronlaufs der Schluessel-zeichengeneratoren aufder Sende- und Empfangsseite bei der Geheimuebertragung von kodierten Nachrichtensignalen
NL244086A (da) * 1958-12-10
CH402937A (de) * 1961-08-18 1965-11-30 Gretag Ag Verfahren zur Verschlüsselung von impulsförmig übertragenen Nachrichten
CH411030A (de) * 1964-08-06 1966-04-15 Patelhold Patentverwertung Einrichtung zur Verschlüsselung einer impulsförmigen Nachricht
CH435363A (de) * 1965-11-26 1967-05-15 Patelhold Patentverwertung Einrichtung zur Synchronisierung von Impulsgeneratoren
CH518658A (de) * 1970-07-07 1972-01-31 Patelhold Patentverwaltungs Un Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen
CH524287A (de) * 1970-09-25 1972-06-15 Patelhold Patentverwertung Verfahren zur automatischen Einstellung eines Transversalfilters zur Impulsentzerrung
CH558993A (de) * 1973-03-19 1975-02-14 Patelhold Patentverwertung Verfahren und einrichtung zur verschluesselten nachrichtenuebertragung.
CH559483A5 (da) * 1973-06-12 1975-02-28 Patelhold Patentverwertung
DE2704822C3 (de) * 1977-02-05 1980-10-23 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Verfahren zur Sprachverschlüsselung nach dem Zeitverwürfelungsverfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156190A (en) * 1984-01-26 1985-10-02 Univ British Columbia Modem
AU572950B2 (en) * 1984-01-26 1988-05-19 University Of British Columbia, The Modem for power line signalling

Also Published As

Publication number Publication date
BE835826A (fr) 1976-03-16
ZA757335B (en) 1977-06-29
DK526975A (da) 1976-05-24
FR2292386B1 (da) 1980-02-08
DK146748C (da) 1984-05-28
SE7513112L (sv) 1976-05-24
CH604433A5 (da) 1978-09-15
NL164165B (nl) 1980-06-16
DE2455477A1 (de) 1976-05-26
DE2455477B2 (de) 1977-08-25
DK146748B (da) 1983-12-19
ATA888375A (de) 1977-10-15
NL164165C (nl) 1980-11-17
NL7513495A (nl) 1976-05-25
DE2455477C3 (de) 1982-08-26
AT343722B (de) 1978-06-12
AU8689875A (en) 1977-06-02
SE403023B (sv) 1978-07-24
FR2292386A1 (fr) 1976-06-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee