DE3379627D1 - Privacy signal transmission system - Google Patents

Privacy signal transmission system

Info

Publication number: DE3379627D1
Authority: DE; Germany
Prior art keywords: signal transmission; transmission system; privacy signal; privacy; transmission
Prior art date: 1982-12-22
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

DE8383112913T

Other languages

English (en)

Inventor

Kouzou Kage

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.)

NEC Corp

Original Assignee

NEC 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.)

1982-12-22

Filing date

1983-12-21

Publication date

1989-05-18

1983-12-21 Application filed by NEC Corp filed Critical NEC Corp

1989-05-18 Application granted granted Critical

1989-05-18 Publication of DE3379627D1 publication Critical patent/DE3379627D1/de

Status Expired legal-status Critical Current

Links

230000008054 signal transmission Effects 0.000 title 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication

DE8383112913T 1982-12-22 1983-12-21 Privacy signal transmission system Expired DE3379627D1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP57223892A JPS59115640A (ja)	1982-12-22	1982-12-22	秘話信号伝送方式

Publications (1)

Publication Number	Publication Date
DE3379627D1 true DE3379627D1 (en)	1989-05-18

Family

ID=16805338

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8383112913T Expired DE3379627D1 (en)	1982-12-22	1983-12-21	Privacy signal transmission system

Country Status (9)

Country	Link
US (1)	US4841571A (de)
EP (1)	EP0111937B1 (de)
JP (1)	JPS59115640A (de)
KR (1)	KR860002153B1 (de)
AU (1)	AU582532B2 (de)
CA (1)	CA1204188A (de)
DE (1)	DE3379627D1 (de)
HK (1)	HK26891A (de)
SG (1)	SG8391G (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5103459B1 (en) *	1990-06-25	1999-07-06	Qualcomm Inc	System and method for generating signal waveforms in a cdma cellular telephone system
US6693951B1 (en)	1990-06-25	2004-02-17	Qualcomm Incorporated	System and method for generating signal waveforms in a CDMA cellular telephone system
US5214787A (en) *	1990-08-31	1993-05-25	Karkota Jr Frank P	Multiple audio channel broadcast system
US5347542A (en) *	1991-06-28	1994-09-13	Motorola, Inc.	Demodulation selection for a communication signal
US5255269A (en) *	1992-03-30	1993-10-19	Spacecom Systems, Inc.	Transmission of data by frequency modulation using gray code
DE19530393A1 (de) *	1995-08-18	1997-02-20	Antonius Dr Rer Nat Klingler	Verfahren zur vocoderlosen Ver- und Entschlüsselung von analogen und digitalen Kommunikationssignalen auf der Basis deterministisch erzeugten Rauschens
US6678311B2 (en)	1996-05-28	2004-01-13	Qualcomm Incorporated	High data CDMA wireless communication system using variable sized channel codes
US5926500A (en)	1996-05-28	1999-07-20	Qualcomm Incorporated	Reduced peak-to-average transmit power high data rate CDMA wireless communication system
WO1998052318A1 (en) *	1997-03-14	1998-11-19	Mobile Broadcasting Corporation	System and method of data transmission in the am frequency spectrum
JPH11295439A (ja) *	1998-04-07	1999-10-29	Ishida Co Ltd	異物検出機および異物検出システム
JP2008177632A (ja) *	2007-01-16	2008-07-31	Oki Electric Ind Co Ltd	無線音声通信回路
US9520920B2 (en) *	2014-10-27	2016-12-13	Avago Technologies General Ip (Singapore) Pte. Ltd.	Transmitting and receiving digital and analog signals across an isolator using amplitude modulation
US20230370758A1 (en) *	2020-03-30	2023-11-16	BlackBox Biometrics, Inc.	Acoustic monitoring systems and methods

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2283575A (en) *	1938-04-19	1942-05-19	Rca Corp	High frequency transmission system
US2399469A (en) *	1940-07-31	1946-04-30	Gen Electric	Secret signaling system
US2527561A (en) *	1947-04-30	1950-10-31	Farnsworth Res Corp	Selective calling system
US3048781A (en) *	1957-12-26	1962-08-07	Bell Telephone Labor Inc	Reduction of quantizing error in quantized transmission systems
US3173092A (en) *	1961-11-15	1965-03-09	Automatic Elect Lab	Delta modulation system
US3273141A (en) *	1963-03-19	1966-09-13	Ball Brothers Res Corp	High speed analog-to-digital converter
GB1095457A (de) *	1965-09-21
NL151593B (nl) *	1966-11-22	1976-11-15	Philips Nv	Stelsel voor signaaloverdracht met behulp van pulsdeltamodulatie.
US3571758A (en) *	1967-05-12	1971-03-23	Westinghouse Electric Corp	Method and apparatus for adaptive delta modulation
JPS5114846B1 (de) *	1968-08-08	1976-05-12
US4008435A (en) *	1972-05-30	1977-02-15	Nippon Electric Company, Ltd.	Delta modulation encoder
US3784743A (en) *	1972-08-23	1974-01-08	Bell Telephone Labor Inc	Parallel data scrambler
FR2209260B1 (de) *	1972-10-10	1975-03-28	Radio Diffusion Tv Francaise
NL165014C (nl) *	1973-09-03	1981-02-16	Philips Nv	Transmissiestelsel met een zender en een ontvanger voor het met behulp van een pulscode overdragen van informatiesignalen.
DE2355676C3 (de) *	1973-11-07	1979-01-18	Standard Elektrik Lorenz Ag, 7000 Stuttgart	Schaltungsanordnung zur Übertragung von Signalen mit Differenz-Pulscodemodulation (DPCM)
NL174611C (nl) *	1975-06-12	1984-07-02	Philips Nv	Differentieel pulscodemodulatie overdrachtstelsel.
GB1558452A (en) *	1976-12-20	1980-01-03	Japan Broadcasting Corp	Analogue to digital converting device
JPS6016777B2 (ja) *	1976-12-25	1985-04-27	株式会社東芝	信号伝送方式
JPS547205A (en) *	1977-06-20	1979-01-19	Nippon Telegr & Teleph Corp <Ntt>	Privacy circuit
JPS5511638A (en) *	1978-07-11	1980-01-26	Nec Corp	Privacy circuit
US4295223A (en) *	1979-04-25	1981-10-13	Westinghouse Electric Corp.	Digital signal/noise ratio amplifier apparatus for a communication system
FR2481026B1 (de) *	1980-04-21	1984-06-15	France Etat
JPS58198934A (ja) *	1982-05-17	1983-11-19	Sony Corp	秘話装置
JPS5922208A (ja) *	1982-07-06	1984-02-04	Victor Co Of Japan Ltd	デイジタル情報信号記録方式

1982
- 1982-12-22 JP JP57223892A patent/JPS59115640A/ja active Granted
1983
- 1983-12-19 US US06/562,567 patent/US4841571A/en not_active Expired - Fee Related
- 1983-12-20 AU AU22554/83A patent/AU582532B2/en not_active Ceased
- 1983-12-21 DE DE8383112913T patent/DE3379627D1/de not_active Expired
- 1983-12-21 CA CA000443977A patent/CA1204188A/en not_active Expired
- 1983-12-21 EP EP83112913A patent/EP0111937B1/de not_active Expired
- 1983-12-22 KR KR1019830006112A patent/KR860002153B1/ko not_active IP Right Cessation
1991
- 1991-02-18 SG SG83/91A patent/SG8391G/en unknown
- 1991-04-11 HK HK268/91A patent/HK26891A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
CA1204188A (en)	1986-05-06
JPH0245856B2 (de)	1990-10-12
KR840007335A (ko)	1984-12-06
AU2255483A (en)	1984-06-28
EP0111937B1 (de)	1989-04-12
EP0111937A3 (en)	1987-01-21
SG8391G (en)	1991-04-05
AU582532B2 (en)	1989-04-06
HK26891A (en)	1991-04-19
KR860002153B1 (ko)	1986-12-11
US4841571A (en)	1989-06-20
EP0111937A2 (de)	1984-06-27
JPS59115640A (ja)	1984-07-04

Legal Events

Date	Code	Title	Description
1990-05-03	8364	No opposition during term of opposition
2000-02-10	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
GB2118750B (en)	1985-10-30	Data transmission system
GB8333415D0 (en)	1984-01-25	Transmission system
EP0120390A3 (en)	1986-02-05	Television signal transmission system
DE3370110D1 (en)	1987-04-09	Burst signal transmission system
DE3167302D1 (en)	1985-01-03	Transmission system
DE3363987D1 (en)	1986-07-17	Data transmission system
GB8305780D0 (en)	1983-04-07	Data transmission system
GB2150793B (en)	1987-02-11	Signal transmission system
GB8332237D0 (en)	1984-01-11	Transmission system
EP0091562A3 (en)	1985-07-03	Data transmission system
JPS57101445A (en)	1982-06-24	Transmission system
DE3379627D1 (en)	1989-05-18	Privacy signal transmission system
GB8307628D0 (en)	1983-04-27	Signal transmission devices
GB2075314B (en)	1984-03-07	Signal transmission system
GB8330354D0 (en)	1983-12-21	Signal transmission
DE3275801D1 (en)	1987-04-23	Data transmission system
GB8327540D0 (en)	1983-11-16	Information transmission system
GB2138248B (en)	1986-11-05	Near field signal transmission system
DE3376611D1 (en)	1988-06-16	Data transmission system
EP0085973A3 (en)	1987-01-07	Information transmission system
GB8400496D0 (en)	1984-02-15	Signal transmission system
GB2111806B (en)	1985-07-24	Serial signal transmission system
DE3262460D1 (en)	1985-03-28	Signal transmission system
DE3370112D1 (en)	1987-04-09	Data transmission system
EP0127125A3 (en)	1986-07-16	Video signal transmission system