GB1515937A - Scrambling speech - Google Patents

Scrambling speech

Info

Publication number: GB1515937A
Authority: GB; United Kingdom
Prior art keywords: speech; sections; nov; register; direct link
Prior art date: 1974-11-23
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

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.)

1974-11-23

Filing date

1975-11-24

Publication date

1978-06-28

1975-11-24 Application filed by Tekade Felten and Guilleaume Fernmeldeanlagen GmbH filed Critical Tekade Felten and Guilleaume Fernmeldeanlagen GmbH

1978-06-28 Publication of GB1515937A publication Critical patent/GB1515937A/en

Status Expired legal-status Critical Current

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 (sv)
BE (1)	BE835826A (sv)
CH (1)	CH604433A5 (sv)
DE (1)	DE2455477C3 (sv)
DK (1)	DK146748C (sv)
FR (1)	FR2292386A1 (sv)
GB (1)	GB1515937A (sv)
NL (1)	NL164165C (sv)
SE (1)	SE403023B (sv)
ZA (1)	ZA757335B (sv)

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 (sv) *	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 (sv) *	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

1974
- 1974-11-23 DE DE2455477A patent/DE2455477C3/de not_active Expired
1975
- 1975-11-19 NL NL7513495.A patent/NL164165C/xx not_active IP Right Cessation
- 1975-11-20 CH CH1505775A patent/CH604433A5/xx not_active IP Right Cessation
- 1975-11-21 AT AT888375A patent/AT343722B/de not_active IP Right Cessation
- 1975-11-21 FR FR7535581A patent/FR2292386A1/fr active Granted
- 1975-11-21 SE SE7513112A patent/SE403023B/sv not_active IP Right Cessation
- 1975-11-21 DK DK526975A patent/DK146748C/da not_active IP Right Cessation
- 1975-11-21 BE BE162083A patent/BE835826A/xx not_active IP Right Cessation
- 1975-11-24 ZA ZA757335A patent/ZA757335B/xx unknown
- 1975-11-24 GB GB48228/75A patent/GB1515937A/en not_active Expired

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

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Legal Events

Date	Code	Title	Description
1978-11-01	PS	Patent sealed
1990-07-18	PCNP	Patent ceased through non-payment of renewal fee