FR2164357A5 - - Google Patents

Info

Publication number
FR2164357A5
FR2164357A5 FR7243575A FR7243575A FR2164357A5 FR 2164357 A5 FR2164357 A5 FR 2164357A5 FR 7243575 A FR7243575 A FR 7243575A FR 7243575 A FR7243575 A FR 7243575A FR 2164357 A5 FR2164357 A5 FR 2164357A5
Authority
FR
France
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
FR7243575A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR2164357A5 publication Critical patent/FR2164357A5/fr
Expired legal-status Critical Current

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
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Polyamides (AREA)
  • Circuit For Audible Band Transducer (AREA)
FR7243575A 1971-12-08 1972-12-07 Expired FR2164357A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7116826A NL155700B (nl) 1971-12-08 1971-12-08 Luidsprekende telefooninrichting.

Publications (1)

Publication Number Publication Date
FR2164357A5 true FR2164357A5 (enrdf_load_stackoverflow) 1973-07-27

Family

ID=19814643

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7243575A Expired FR2164357A5 (enrdf_load_stackoverflow) 1971-12-08 1972-12-07

Country Status (6)

Country Link
JP (1) JPS5331326B2 (enrdf_load_stackoverflow)
DE (1) DE2258415C3 (enrdf_load_stackoverflow)
FR (1) FR2164357A5 (enrdf_load_stackoverflow)
GB (1) GB1367707A (enrdf_load_stackoverflow)
NL (1) NL155700B (enrdf_load_stackoverflow)
NO (1) NO133988C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578127A1 (fr) * 1985-02-27 1986-08-29 Jeumont Schneider Procede et dispositif pour la commande d'un poste telephonique a main libre fonctionnant en alternat
FR2610772A2 (fr) * 1987-02-10 1988-08-12 Telephonie Ind Commerciale Dispositif anti-effet larsen pour poste telephonique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO134477C (enrdf_load_stackoverflow) * 1974-10-29 1976-10-13 Manus Max
JPS5469308A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Audio switch
JPS5824063B2 (ja) * 1977-11-14 1983-05-19 東亜特殊電機株式会社 拡声電話機
US4229625A (en) * 1978-12-29 1980-10-21 Bell Telephone Laboratories, Incorporated Repeater level control circuit
US4346261A (en) * 1980-03-17 1982-08-24 United Networks, Inc. Speaker phones
DE3034569C2 (de) * 1980-09-10 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Sprachgesteuerte Lautfernsprechanlage
DD154419A1 (de) * 1980-12-23 1982-03-17 Helmut Kammholz Schaltungsanordnung fuer einen fernsprechapparat mit mithoer-und freisprecheinrichtung
GB2197166A (en) * 1986-11-07 1988-05-11 Storno As Controlling gain in speech-controlled telephones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578127A1 (fr) * 1985-02-27 1986-08-29 Jeumont Schneider Procede et dispositif pour la commande d'un poste telephonique a main libre fonctionnant en alternat
EP0193469A3 (fr) * 1985-02-27 1987-04-15 Js Telecommunications Procédé et dispositif pour la commande d'un poste téléphonique à main libre fonctionnant en alternat
FR2610772A2 (fr) * 1987-02-10 1988-08-12 Telephonie Ind Commerciale Dispositif anti-effet larsen pour poste telephonique
EP0280105A1 (fr) * 1987-02-10 1988-08-31 Alcatel Business Systems Dispositif anti-effet larsen pour poste téléphonique

Also Published As

Publication number Publication date
JPS4866310A (enrdf_load_stackoverflow) 1973-09-11
NO133988B (enrdf_load_stackoverflow) 1976-04-20
JPS5331326B2 (enrdf_load_stackoverflow) 1978-09-01
NL7116826A (enrdf_load_stackoverflow) 1973-06-13
NO133988C (enrdf_load_stackoverflow) 1976-07-28
DE2258415C3 (de) 1980-06-12
NL155700B (nl) 1978-01-16
GB1367707A (en) 1974-09-18
DE2258415B2 (de) 1979-09-20
DE2258415A1 (de) 1973-06-14

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Legal Events

Date Code Title Description
ST Notification of lapse