FI840281L - Saett och anordning foer att foervraenga en talsignal. - Google Patents

Saett och anordning foer att foervraenga en talsignal. Download PDF

Info

Publication number: FI840281L
Authority: FI; Finland
Prior art keywords: talsignal; foervraenga; anordning foer; och anordning; foer att
Prior art date: 1982-06-11

Application number

FI840281A

Other languages

English (en)

Other versions

FI75458C (fi

FI75458B (fi

FI840281A0 (fi

Inventor

Per Tjernlund

Original Assignee

Ericsson Telefon Ab L M

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.)

1982-06-11

Filing date

1984-01-24

Publication date

1984-01-24

1984-01-24 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1984-01-24 Publication of FI840281A0 publication Critical patent/FI840281A0/fi

1984-01-24 Publication of FI840281L publication Critical patent/FI840281L/fi

1988-02-29 Application granted granted Critical

1988-02-29 Publication of FI75458B publication Critical patent/FI75458B/fi

1988-06-09 Publication of FI75458C publication Critical patent/FI75458C/fi

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)
Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Noise Elimination (AREA)
Radio Relay Systems (AREA)

FI840281A 1982-06-11 1984-01-24 Saett och anordning foer att foervraenga en talsignal. FI75458C (fi)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
SE8203648A SE431385B (sv)	1982-06-11	1982-06-11	Sett att forvrenga en talsignal, sett att aterstella den forvrengda talsignalen, samt anordning for att forvrenga respektive aterstella talsignalen
SE8203648		1982-06-11
SE8300230		1983-06-06
PCT/SE1983/000230 WO1983004460A1 (en)	1982-06-11	1983-06-06	Methods and apparatus for distorting and recomposing a speech signal

Publications (4)

Publication Number	Publication Date
FI840281A0 FI840281A0 (fi)	1984-01-24
FI840281L true FI840281L (fi)	1984-01-24
FI75458B FI75458B (fi)	1988-02-29
FI75458C FI75458C (fi)	1988-06-09

Family

ID=20347049

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI840281A FI75458C (fi)	1982-06-11	1984-01-24	Saett och anordning foer att foervraenga en talsignal.

Country Status (9)

Country	Link
US (1)	US4802219A (fi)
CA (1)	CA1210817A (fi)
DK (1)	DK160069C (fi)
ES (1)	ES8501186A1 (fi)
FI (1)	FI75458C (fi)
GB (1)	GB2132056B (fi)
NL (1)	NL191816C (fi)
SE (1)	SE431385B (fi)
WO (1)	WO1983004460A1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2182229B (en) *	1985-10-25	1989-10-04	Racal Res Ltd	Speech scramblers
JPS6424648A (en) *	1987-07-21	1989-01-26	Fujitsu Ltd	Privacy call equipment
US5731980A (en) *	1996-08-23	1998-03-24	Pitney Bowes Inc.	Electronic postage meter system having internal accounting system and removable external accounting system
JP3762609B2 (ja) *	2000-03-15	2006-04-05	シャープ株式会社	通信装置および周波数スペクトラム反転演算方法およびプログラム記憶媒体
US7143028B2 (en)	2002-07-24	2006-11-28	Applied Minds, Inc.	Method and system for masking speech
US20040125922A1 (en) *	2002-09-12	2004-07-01	Specht Jeffrey L.	Communications device with sound masking system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE569790C (de) *	1930-03-01	1933-02-08	Siemens Ag	Verfahren zur Geheimhaltung von elektrisch uebermittelten Nachrichten
DE1273002B (de) *	1963-09-11	1968-07-18	Siemens Ag	Einrichtung zur verschluesselten UEbertragung von Sprachsignalen durch Vertauschung von Teilbaendern
US3777064A (en) *	1972-06-01	1973-12-04	Us Navy	Voice privacy system
US3886313A (en) *	1972-09-29	1975-05-27	Datotek	Voice security method and system
US4068094A (en) *	1973-02-13	1978-01-10	Gretag Aktiengesellschaft	Method and apparatus for the scrambled transmission of spoken information via a telephony channel
CH580893A5 (fi) *	1973-07-02	1976-10-15	Gretag Ag
US4221931A (en) *	1977-10-17	1980-09-09	Harris Corporation	Time division multiplied speech scrambler
US4195202A (en) *	1978-01-03	1980-03-25	Technical Communications Corporation	Voice privacy system with amplitude masking
US4278840A (en) *	1979-03-23	1981-07-14	Datotek, Inc.	Dynamic frequency and time voice encryption system and method
DE3120357A1 (de) *	1981-05-22	1982-12-09	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Verfahren zur vertauschung von n teilbaendern
US4434323A (en) *	1981-06-29	1984-02-28	Motorola, Inc.	Scrambler key code synchronizer
FR2520955B1 (fr) *	1982-01-29	1987-11-13	Radiotechnique	Systeme electronique de transmission secrete de signaux audio
US4551580A (en) *	1982-11-22	1985-11-05	At&T Bell Laboratories	Time-frequency scrambler
JPS6128250A (ja) *	1984-06-29	1986-02-07	Nec Corp	秘話通信装置

1982
- 1982-06-11 SE SE8203648A patent/SE431385B/sv not_active IP Right Cessation
1983
- 1983-06-06 GB GB08402898A patent/GB2132056B/en not_active Expired
- 1983-06-06 NL NL8320187A patent/NL191816C/xx not_active IP Right Cessation
- 1983-06-06 US US06/573,937 patent/US4802219A/en not_active Expired - Lifetime
- 1983-06-06 WO PCT/SE1983/000230 patent/WO1983004460A1/en not_active Ceased
- 1983-06-10 CA CA000430169A patent/CA1210817A/en not_active Expired
- 1983-06-10 ES ES523157A patent/ES8501186A1/es not_active Expired
1984
- 1984-01-24 FI FI840281A patent/FI75458C/fi not_active IP Right Cessation
- 1984-02-10 DK DK061484A patent/DK160069C/da not_active IP Right Cessation

Also Published As

Publication number	Publication date
WO1983004460A1 (en)	1983-12-22
DK160069C (da)	1991-06-10
GB2132056A (en)	1984-06-27
DK61484A (da)	1984-02-10
NL8320187A (nl)	1984-04-02
US4802219A (en)	1989-01-31
FI75458C (fi)	1988-06-09
SE431385B (sv)	1984-01-30
GB8402898D0 (en)	1984-03-07
ES523157A0 (es)	1984-11-01
NL191816C (nl)	1996-08-02
CA1210817A (en)	1986-09-02
GB2132056B (en)	1986-08-28
DK61484D0 (da)	1984-02-10
FI75458B (fi)	1988-02-29
DK160069B (da)	1991-01-21
ES8501186A1 (es)	1984-11-01
FI840281A0 (fi)	1984-01-24
NL191816B (nl)	1996-04-01
SE8203648L (sv)	1983-12-12

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Legal Events

Date	Code	Title	Description
2004-08-31	MM	Patent lapsed	Owner name: OY L M ERICSSON AB