NO134477B - - Google Patents

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Publication number
NO134477B
NO134477B NO743893A NO743893A NO134477B NO 134477 B NO134477 B NO 134477B NO 743893 A NO743893 A NO 743893A NO 743893 A NO743893 A NO 743893A NO 134477 B NO134477 B NO 134477B
Authority
NO
Norway
Prior art keywords
channel
signal value
signal
value
speech
Prior art date
Application number
NO743893A
Other languages
English (en)
Norwegian (no)
Other versions
NO134477C (en]
NO743893L (en]
Inventor
B Andersen
Original Assignee
Manus Max
Manus George
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 Manus Max, Manus George filed Critical Manus Max
Priority to NO743893A priority Critical patent/NO134477C/no
Priority to CH1342975A priority patent/CH600711A5/xx
Priority to DE2546926A priority patent/DE2546926C3/de
Priority to US05/624,250 priority patent/US4052562A/en
Priority to CA238,075A priority patent/CA1040332A/en
Priority to AT808375A priority patent/AT358634B/de
Priority to AU86026/75A priority patent/AU495602B2/en
Priority to GB44473/75A priority patent/GB1507866A/en
Priority to DK483775A priority patent/DK152637C/da
Priority to JP50129760A priority patent/JPS5167008A/ja
Priority to SE7512043A priority patent/SE400443B/xx
Priority to FR7532958A priority patent/FR2290108A1/fr
Priority to NL7512677A priority patent/NL7512677A/xx
Priority to ZA00756825A priority patent/ZA756825B/xx
Priority to IT28779/75A priority patent/IT1044596B/it
Priority to BE161378A priority patent/BE835013A/xx
Publication of NO743893L publication Critical patent/NO743893L/no
Publication of NO134477B publication Critical patent/NO134477B/no
Publication of NO134477C publication Critical patent/NO134477C/no
Priority to JP1983062014U priority patent/JPS5952767U/ja

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
NO743893A 1974-10-29 1974-10-29 NO134477C (en])

Priority Applications (17)

Application Number Priority Date Filing Date Title
NO743893A NO134477C (en]) 1974-10-29 1974-10-29
CH1342975A CH600711A5 (en]) 1974-10-29 1975-10-16
DE2546926A DE2546926C3 (de) 1974-10-29 1975-10-20 System zur Steuerung der Sprechrichtung in Duplex-Sprechverkehr-Anlagen
US05/624,250 US4052562A (en) 1974-10-29 1975-10-20 System for control of speech direction in duplex telephone circuits
CA238,075A CA1040332A (en) 1974-10-29 1975-10-21 System for control of speech direction in duplex telephone circuits
AT808375A AT358634B (de) 1974-10-29 1975-10-23 System zur steuerung der umschaltung des ver- bindungsweges in sprachgesteuerten duplex- -sprechverkehrsanlagen
AU86026/75A AU495602B2 (en) 1974-10-29 1975-10-27 System for control of speech direction in duplex telephone circuits
JP50129760A JPS5167008A (en]) 1974-10-29 1975-10-28
DK483775A DK152637C (da) 1974-10-29 1975-10-28 System til styring af taleretningen i duplekssamtaleanlaeg
GB44473/75A GB1507866A (en) 1974-10-29 1975-10-28 System for controlling the speech direction in a duplex telephone circuit
SE7512043A SE400443B (sv) 1974-10-29 1975-10-28 Anordning for styrning av talriktningen i duplextelefonanleggningar
FR7532958A FR2290108A1 (fr) 1974-10-29 1975-10-28 Dispositif de commutation automatique du sens de transmission pour des circuits telephoniques
NL7512677A NL7512677A (nl) 1974-10-29 1975-10-29 Systeem voor het besturen van de spreekrichting in duplextelefoonketens.
ZA00756825A ZA756825B (en) 1974-10-29 1975-10-29 System for control of speech direction in duplex telephone circuits
IT28779/75A IT1044596B (it) 1974-10-29 1975-10-29 Sistema per il controllo della direzione della voce nei limiti telefonici duplex in basf all in vuloppo dei segnali
BE161378A BE835013A (fr) 1974-10-29 1975-10-29 Systeme de commande du sens de passage de la parole dans des circuits telephoniques duplex
JP1983062014U JPS5952767U (ja) 1974-10-29 1983-04-25 同時送受電話回線で通話方向を制御する装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO743893A NO134477C (en]) 1974-10-29 1974-10-29

Publications (3)

Publication Number Publication Date
NO743893L NO743893L (en]) 1976-04-30
NO134477B true NO134477B (en]) 1976-07-05
NO134477C NO134477C (en]) 1976-10-13

Family

ID=19881909

Family Applications (1)

Application Number Title Priority Date Filing Date
NO743893A NO134477C (en]) 1974-10-29 1974-10-29

Country Status (15)

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

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
WO2005048574A1 (en) * 2003-11-11 2005-05-26 Matech, Inc. Automatic-switching wireless communication device
KR100851286B1 (ko) * 2003-11-11 2008-08-08 마테크, 인코포레이티드 단일 트랜스듀서를 갖는 쌍방향 통신 장치
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
NL225471A (en]) * 1957-11-26 1900-01-01
NL267461A (en]) * 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 (en]) * 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 (en]) * 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 (en]) * 1973-04-06 1977-04-29 Voyer Paul

Also Published As

Publication number Publication date
BE835013A (fr) 1976-02-16
JPS6244610Y2 (en]) 1987-11-26
DE2546926A1 (de) 1976-05-06
AT358634B (de) 1980-09-25
NO134477C (en]) 1976-10-13
AU8602675A (en) 1977-05-05
IT1044596B (it) 1980-03-31
FR2290108B1 (en]) 1979-06-15
NL7512677A (nl) 1976-05-04
ZA756825B (en) 1976-10-27
DE2546926C3 (de) 1980-12-18
CA1040332A (en) 1978-10-10
NO743893L (en]) 1976-04-30
US4052562A (en) 1977-10-04
SE7512043L (sv) 1976-04-30
CH600711A5 (en]) 1978-06-30
FR2290108A1 (fr) 1976-05-28
JPS5952767U (ja) 1984-04-06
GB1507866A (en) 1978-04-19
DK152637B (da) 1988-03-28
JPS5167008A (en]) 1976-06-10
ATA808375A (de) 1980-02-15
DE2546926B2 (de) 1980-04-24
SE400443B (sv) 1978-03-20
DK483775A (da) 1976-04-30
DK152637C (da) 1988-08-15

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