AU3179171A - Voice privacy device - Google Patents

Voice privacy device

Info

Publication number: AU3179171A
Authority: AU; Australia
Prior art keywords: privacy device; voice privacy; voice; privacy
Prior art date: 1970-07-30
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

AU31791/71A

Inventor

K. Miller Charles

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.)

Technical Communications Corp

Original Assignee

Technical Communications Corp

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.)

1970-07-30

Filing date

1971-07-29

Publication date

1973-02-01

1971-07-29 Application filed by Technical Communications Corp filed Critical Technical Communications Corp

1973-02-01 Publication of AU3179171A publication Critical patent/AU3179171A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/04—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)
Mobile Radio Communication Systems (AREA)
Synchronisation In Digital Transmission Systems (AREA)

AU31791/71A 1970-07-30 1971-07-29 Voice privacy device Expired AU3179171A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US5965970A	1970-07-30	1970-07-30
USUS59659		1970-07-30

Publications (1)

Publication Number	Publication Date
AU3179171A true AU3179171A (en)	1973-02-01

Family

ID=22024396

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU31791/71A Expired AU3179171A (en)	1970-07-30	1971-07-29	Voice privacy device

Country Status (6)

Country	Link
US (1)	US3723878A (en)
AU (1)	AU3179171A (en)
CA (1)	CA939843A (en)
DE (1)	DE2138228A1 (en)
FR (1)	FR2103804A5 (en)
IL (1)	IL37241A0 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2231737C1 (en) *	1972-06-29	1990-05-23	Krupp Atlas Electronik Gmbh
US4013837A (en) *	1972-09-29	1977-03-22	Datotek, Inc.	Voice security method and system
US3893031A (en) *	1972-11-08	1975-07-01	Boeing Co	Synchronization system for voice privacy unit
US3909534A (en) *	1973-09-07	1975-09-30	Boeing Co	Voice privacy unit for intercommunication systems
US4091423A (en) *	1975-03-17	1978-05-23	Datotek, Inc.	Synchronous digital data scrambling system
US4169212A (en) *	1975-04-14	1979-09-25	Datotek, Inc.	Multi-mode digital enciphering system
US4099027A (en) *	1976-01-02	1978-07-04	General Electric Company	Speech scrambler
US4159399A (en) *	1976-09-29	1979-06-26	Tokyo Shibaura Electric Co., Ltd.	Security communication system using polarity inversion
US4160875A (en) *	1977-05-12	1979-07-10	Kahn Leonard R	Security system
US4188580A (en) *	1977-10-20	1980-02-12	Telesync Corporation	Secure communication system
US4195202A (en) *	1978-01-03	1980-03-25	Technical Communications Corporation	Voice privacy system with amplitude masking
JPS54129901A (en) *	1978-03-31	1979-10-08	Toshiba Corp	Secret communication system
DE2854832C2 (en) *	1978-12-19	1980-11-20	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Receiving circuit in an interference-suppressing message transmission system with narrow-band conventional message modulation and additional pseudo-random phase-shift modulation
US4278840A (en) *	1979-03-23	1981-07-14	Datotek, Inc.	Dynamic frequency and time voice encryption system and method
US4268720A (en) *	1979-05-25	1981-05-19	Gte Laboratories Incorporated	Scrambler speech transmission and synchronization system
NZ199275A (en) *	1980-12-16	1984-11-09	Minnesota Mining Mfg Australia	Verification of recorded messages
US4401854A (en) *	1981-08-03	1983-08-30	Bell Telephone Laboratories, Incorporated	Simultaneous transmission of an analog message signal and a digital data signal
US4433211A (en) *	1981-11-04	1984-02-21	Technical Communications Corporation	Privacy communication system employing time/frequency transformation
US4573205A (en) *	1983-08-22	1986-02-25	At&T Bell Laboratories	Technique for secure communications on FM radio channels
DE3481887D1 (en) *	1983-09-29	1990-05-10	Nippon Telegraph & Telephone	RADIO RECEIVING SYSTEM FOR A PHASE-MODULATED SIGNAL.
DE3482363D1 (en) *	1983-09-30	1990-06-28	Nippon Telegraph & Telephone	RADIO TRANSMITTER SYSTEM FOR A PHASE-MODULATED SIGNAL.
US4638357A (en) *	1984-01-20	1987-01-20	Home Box Office, Inc.	Audio scrambler
CA1252560A (en) *	1984-01-27	1989-04-11	Frank T. Meriwether	Method and system for scrambling information signals
US7167561B1 (en) *	1999-03-03	2007-01-23	Sony Corporation	Recording apparatus, recording method, reproducing apparatus, and reproducing method
US7069590B1 (en) *	2000-02-17	2006-06-27	Microsoft Corporation	System and method for protecting data streams in hardware components
US8792640B2 (en) *	2008-01-29	2014-07-29	Sony Corporation	Systems and methods for securing a digital communications link
WO2009125573A1 (en) *	2008-04-11	2009-10-15	パナソニック株式会社	Transmitter and receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2479338A (en) *	1945-01-13	1949-08-16	Leonide E Gabrilovitch	Inverter and distorter for secret communications
US2905747A (en) *	1953-09-22	1959-09-22	Rca Corp	Secrecy systems
US3180927A (en) *	1961-09-07	1965-04-27	Itt	Cryptosecure transmission system
US3341659A (en) *	1964-01-24	1967-09-12	Burroughs Corp	Controlled bandwidth coded voice communication system
US3610828A (en) *	1967-05-23	1971-10-05	Technical Communications	Privacy communication system

1970
- 1970-07-30 US US00059659A patent/US3723878A/en not_active Expired - Lifetime
1971
- 1971-07-06 IL IL37241A patent/IL37241A0/en unknown
- 1971-07-29 AU AU31791/71A patent/AU3179171A/en not_active Expired
- 1971-07-29 FR FR7127837A patent/FR2103804A5/fr not_active Expired
- 1971-07-30 CA CA119,594A patent/CA939843A/en not_active Expired
- 1971-07-30 DE DE19712138228 patent/DE2138228A1/en active Pending

Also Published As

Publication number	Publication date
US3723878A (en)	1973-03-27
IL37241A0 (en)	1971-11-29
FR2103804A5 (en)	1972-04-14
CA939843A (en)	1974-01-08
DE2138228A1 (en)	1972-03-16

Publication	Publication Date	Title
CA939843A (en)	1974-01-08	Voice privacy device
CA938893A (en)	1973-12-25	Ear-protecting device
CA962427A (en)	1975-02-11	Connecting device
CA938894A (en)	1973-12-25	Ear-protecting device
CA970084A (en)	1975-06-24	Telecommunication device
CA940600A (en)	1974-01-22	Voice privacy adapter
AU2923271A (en)	1972-11-30	Film-perforating device
CA955440A (en)	1974-10-01	Ophthalmometer device
CA939643A (en)	1974-01-08	Coin-processing device
AU3470771A (en)	1973-05-03	Microphone
CA929493A (en)	1973-07-03	Money-handling device
CA944793A (en)	1974-04-02	Positioning device
CA953045A (en)	1974-08-13	Telephone auto-answering device
CA931493A (en)	1973-08-07	Anti-flashback device
CA934779A (en)	1973-10-02	Lowering device
AU446439B2 (en)	1974-02-26	Closer device
AU441285B2 (en)	1973-08-16	Telephone auto-answering device
CA906920A (en)	1972-08-08	Plumbing device
AU2969171A (en)	1973-08-16	Telephone auto-answering device
CA859274A (en)	1970-12-22	Gas-filled device
AU450443B2 (en)	1974-06-24	Truck-loading device
CA858830A (en)	1970-12-22	Multi-photographing device
CA858099A (en)	1970-12-08	Oscillator-detector device
CA832264A (en)	1970-01-20	Blank-splitting device
AU456592B2 (en)	1972-11-02	Integral-thyristor-rectifier device