DK483775A - System til styring af taleretningen i duplekstelefonanleg - Google Patents

System til styring af taleretningen i duplekstelefonanleg

Info

Publication number
DK483775A
DK483775A DK483775A DK483775A DK483775A DK 483775 A DK483775 A DK 483775A DK 483775 A DK483775 A DK 483775A DK 483775 A DK483775 A DK 483775A DK 483775 A DK483775 A DK 483775A
Authority
DK
Denmark
Prior art keywords
voice
controlling
telephone systems
duplex telephone
duplex
Prior art date
Application number
DK483775A
Other languages
English (en)
Other versions
DK152637C (da
DK152637B (da
Inventor
B Nadersen
Original Assignee
Maxman Ag
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 Maxman Ag filed Critical Maxman Ag
Publication of DK483775A publication Critical patent/DK483775A/da
Publication of DK152637B publication Critical patent/DK152637B/da
Application granted granted Critical
Publication of DK152637C publication Critical patent/DK152637C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties
DK483775A 1974-10-29 1975-10-28 System til styring af taleretningen i duplekssamtaleanlaeg DK152637C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO743893 1974-10-29
NO743893A NO134477C (da) 1974-10-29 1974-10-29

Publications (3)

Publication Number Publication Date
DK483775A true DK483775A (da) 1976-04-30
DK152637B DK152637B (da) 1988-03-28
DK152637C DK152637C (da) 1988-08-15

Family

ID=19881909

Family Applications (1)

Application Number Title Priority Date Filing Date
DK483775A DK152637C (da) 1974-10-29 1975-10-28 System til styring af taleretningen i duplekssamtaleanlaeg

Country Status (15)

Country Link
US (1) US4052562A (da)
JP (2) JPS5167008A (da)
AT (1) AT358634B (da)
BE (1) BE835013A (da)
CA (1) CA1040332A (da)
CH (1) CH600711A5 (da)
DE (1) DE2546926C3 (da)
DK (1) DK152637C (da)
FR (1) FR2290108A1 (da)
GB (1) GB1507866A (da)
IT (1) IT1044596B (da)
NL (1) NL7512677A (da)
NO (1) NO134477C (da)
SE (1) SE400443B (da)
ZA (1) ZA756825B (da)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2638286C3 (de) * 1976-08-25 1979-03-01 Dasy Inter S.A., Genf (Schweiz) Schaltungsanordnung für ein Freisprechertelefon
US4215252A (en) * 1978-09-27 1980-07-29 Communications Satellite Corporation Video teleconference audio echo control unit
DE2952122A1 (de) * 1979-12-22 1981-06-25 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltungsanordnung fuer sprachgesteuerte freisprechgeraete
DE3007632A1 (de) * 1980-02-29 1981-09-10 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltungsanordnung zur rueckkopplungsverhinderung bei telefonapparaten mit freisprech- und/oder mithoermoeglichkeit
JPS5797262A (en) * 1980-12-09 1982-06-16 Nippon Telegr & Teleph Corp <Ntt> Loud speaker telephone set system
US4378603A (en) * 1980-12-23 1983-03-29 Motorola, Inc. Radiotelephone with hands-free operation
US4400584A (en) * 1982-04-05 1983-08-23 Motorola, Inc. Speakerphone for radio and, landline telephones
GB2122851B (en) * 1982-06-10 1986-03-19 Standard Telephones Cables Ltd Loudspeaking telephones
JPS5916434A (ja) * 1982-07-19 1984-01-27 Hitachi Ltd 光通信方式
GB2137454A (en) * 1983-03-01 1984-10-03 Standard Telephones Cables Ltd Handsfree telephone system
GB2137049B (en) * 1983-03-15 1986-05-14 Standard Telephones Cables Ltd Handsfree telephone
US4542263A (en) * 1984-03-07 1985-09-17 Oki Electric Industry Co., Ltd. Speech control circuit
US4860359A (en) * 1984-10-15 1989-08-22 Rockwell International Corporation Method of voice operated transmit control
CA1226981A (en) * 1984-10-30 1987-09-15 Novatel Communications Ltd. Two way telephone communication system
FI78373C (fi) * 1988-01-18 1989-07-10 Sostel Oy Telefontrafik- eller dataoeverfoeringssystem.
DE59008583D1 (de) * 1989-10-18 1995-04-06 Siemens Ag Verfahren zur automatischen Sprachrichtungsumschaltung und Schaltungsanordnung zur Durchführung des Verfahrens.
US7072476B2 (en) * 1997-02-18 2006-07-04 Matech, Inc. Audio headset
US5907538A (en) * 1997-02-18 1999-05-25 White; Donald R. Full duplex communication circuit with a transducer for simultaneously generating audio output and receiving audio input
US7826805B2 (en) * 2003-11-11 2010-11-02 Matech, Inc. Automatic-switching wireless communication device
WO2005048572A2 (en) * 2003-11-11 2005-05-26 Matech, Inc. Two-way communications device having a single transducer
JP2006108777A (ja) * 2004-09-30 2006-04-20 Toshiba Corp 電話端末及びこの電話端末を使用した電話システム、及び電話端末の制御方法
US8315379B2 (en) * 2004-11-10 2012-11-20 Matech, Inc. Single transducer full duplex talking circuit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE565494A (da) * 1957-11-26 1900-01-01
NL267461A (da) * 1960-10-04 1900-01-01
DE1562130A1 (de) * 1968-01-12 1970-10-29 Lauffer Dr Ing Hans Wechselsprechanlage
BE786256A (fr) * 1971-07-15 1973-01-15 Philips Nv Dispositif de commutation commande par des signaux
FR2157143A5 (da) * 1971-10-19 1973-06-01 Queffeulou Jean Yves
NL155700B (nl) * 1971-12-08 1978-01-16 Philips Nv Luidsprekende telefooninrichting.
US3725585A (en) * 1972-03-21 1973-04-03 Itt Loudspeaking telephone station circuit
SE354557B (da) * 1972-03-22 1973-03-12 Ericsson Telefon Ab L M
US3832491A (en) * 1973-02-13 1974-08-27 Communications Satellite Corp Digital voice switch with an adaptive digitally-controlled threshold
FR2224961B1 (da) * 1973-04-06 1977-04-29 Voyer Paul

Also Published As

Publication number Publication date
CA1040332A (en) 1978-10-10
GB1507866A (en) 1978-04-19
FR2290108B1 (da) 1979-06-15
US4052562A (en) 1977-10-04
JPS5167008A (da) 1976-06-10
NL7512677A (nl) 1976-05-04
DE2546926C3 (de) 1980-12-18
JPS6244610Y2 (da) 1987-11-26
NO743893L (da) 1976-04-30
CH600711A5 (da) 1978-06-30
JPS5952767U (ja) 1984-04-06
NO134477B (da) 1976-07-05
BE835013A (fr) 1976-02-16
DE2546926A1 (de) 1976-05-06
DE2546926B2 (de) 1980-04-24
DK152637C (da) 1988-08-15
ZA756825B (en) 1976-10-27
ATA808375A (de) 1980-02-15
IT1044596B (it) 1980-03-31
AU8602675A (en) 1977-05-05
SE400443B (sv) 1978-03-20
FR2290108A1 (fr) 1976-05-28
SE7512043L (sv) 1976-04-30
DK152637B (da) 1988-03-28
NO134477C (da) 1976-10-13
AT358634B (de) 1980-09-25

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Legal Events

Date Code Title Description
PBP Patent lapsed