ES8702100A1 - Un circuito para un telefono de manos libres controlado por la voz - Google Patents

Un circuito para un telefono de manos libres controlado por la voz

Info

Publication number
ES8702100A1
ES8702100A1 ES541744A ES541744A ES8702100A1 ES 8702100 A1 ES8702100 A1 ES 8702100A1 ES 541744 A ES541744 A ES 541744A ES 541744 A ES541744 A ES 541744A ES 8702100 A1 ES8702100 A1 ES 8702100A1
Authority
ES
Spain
Prior art keywords
output
voice
controlled
circuit arrangement
hands free
Prior art date
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
ES541744A
Other languages
English (en)
Other versions
ES541744A0 (es
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8702100A1 publication Critical patent/ES8702100A1/es
Publication of ES541744A0 publication Critical patent/ES541744A0/es
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephone Function (AREA)

Abstract

CIRCUITO PARA UN TELEFONO DE MANOS LIBRES CONTROLADO POR LA VOZ. CONSTA DE UN MICROFONO; DE UN ALTAVOZ INTERNO Y UNO EXTERIOR; Y DE DOS COMBINACIONES SERIE DE UN AMPLIFICADOR DE ENTRADA (EV), UN ATENUADOR VARIABLE (DR) Y UN AMPLIFICADOR DE SALIDA (AV), UNO PARA LA VIA DE EMISION Y OTRO PARA LA DE RECEPCION, CON LA SALIDA (E) DEL AMPLIFICADOR DE ENTRADA (EV) Y LA SALIDA (D) DEL ATENUADOR VARIABLE (DR) CONECTADAS A LA UNIDAD DE CONTROL DE VOZ (SS). EN LA VIA DE EMISION Y EN LA VIA DE RECEPCION SE CONECTA LA SALIDA (E) DEL AMPLIFICADOR DE ENTRADA (EV) A LA SALIDA (E) DEL AMPLIFICADOR DE ENTRADA (EV) A LA SALIDA (A) DEL AMPLIFICADOR DE SALIDA (AV), A TRAVES DE UN DISPOSITIVO DE DERIVACION (BP) Y UNA UNIDAD DE CONMUTACION (T).
ES541744A 1984-03-31 1985-03-29 Un circuito para un telefono de manos libres controlado por la voz Expired ES8702100A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843412111 DE3412111A1 (de) 1984-03-31 1984-03-31 Schaltungsanordnung fuer eine sprachgesteuerte freisprecheinrichtung

Publications (2)

Publication Number Publication Date
ES8702100A1 true ES8702100A1 (es) 1986-10-16
ES541744A0 ES541744A0 (es) 1986-10-16

Family

ID=6232275

Family Applications (1)

Application Number Title Priority Date Filing Date
ES541744A Expired ES8702100A1 (es) 1984-03-31 1985-03-29 Un circuito para un telefono de manos libres controlado por la voz

Country Status (5)

Country Link
US (1) US4648110A (es)
EP (1) EP0157381B1 (es)
JP (1) JPS60236556A (es)
DE (2) DE3412111A1 (es)
ES (1) ES8702100A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541794A1 (de) * 1985-11-26 1987-05-27 Siemens Ag Sprachsteuerung in einer fernsprechstation
US4720856A (en) * 1986-09-02 1988-01-19 Motorola, Inc. Control circuit having a direct current control loop for controlling the gain of an attenuator
CA2086522C (en) * 1991-04-30 1996-12-24 Yuji Umemoto Speech communication apparatus equipped with echo canceller
JPH04363918A (ja) * 1991-06-11 1992-12-16 Toshiba Corp 電話装置
JPH06216986A (ja) * 1993-01-19 1994-08-05 Mitsubishi Electric Corp ハンズフリー通話回路
JPH06338934A (ja) * 1993-05-25 1994-12-06 Exar Corp 事象駆動型制御回路を有するスピーカーホーン
ATE459191T1 (de) * 2002-04-09 2010-03-15 Palm Inc Mobiles kommunikationsendgerät mit freisprechbetrieb

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100818A (en) * 1959-11-06 1963-08-13 Thomas F Carter Communication systems
DE1512775B2 (de) * 1967-04-11 1970-12-23 Siemens AG, 1000 Berlin u. 8OOO München Anordnung für Gegensprech- bzw. Freisprechanlagen
SE336609B (es) * 1969-10-30 1971-07-12 Ericsson Telefon Ab L M
SE339833B (es) * 1970-02-18 1971-10-25 K Blomberg
DE2439740C3 (de) * 1974-08-19 1978-08-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für sprachgesteuerte Freisprechgeräte mit von den Sprechspannungen abhängigem unterschiedlichen Dämpfungshub je Sprachkanal und je Sprechrichtung
US4056696A (en) * 1976-09-15 1977-11-01 Bell Telephone Laboratories, Incorporated Flat panel telephone station set
DE2842369A1 (de) * 1978-09-28 1980-04-10 Siemens Ag Schaltungsanordnung fuer eine sprachgesteuerte lautfernsprechstation in fernmelde-, insbesondere fernsprechanlagen
NL7906957A (nl) * 1979-09-19 1981-03-23 Philips Nv Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat.
JPS5797262A (en) * 1980-12-09 1982-06-16 Nippon Telegr & Teleph Corp <Ntt> Loud speaker telephone set system
US4497980A (en) * 1983-06-16 1985-02-05 Itt Corporation Handsfree circuit for telephone instrument
JPS607231A (ja) * 1983-06-27 1985-01-16 Toshiba Corp 車載用拡声電話装置

Also Published As

Publication number Publication date
US4648110A (en) 1987-03-03
EP0157381A2 (de) 1985-10-09
EP0157381B1 (de) 1990-06-20
DE3412111A1 (de) 1985-10-10
EP0157381A3 (en) 1987-08-26
ES541744A0 (es) 1986-10-16
JPS60236556A (ja) 1985-11-25
DE3578367D1 (de) 1990-07-26

Similar Documents

Publication Publication Date Title
US3751602A (en) Loudspeaking telephone
US4101735A (en) Two-way loudspeaking device for telephone stations
JPS5571400A (en) Monolithic power ic and acoustic unit
ES8702100A1 (es) Un circuito para un telefono de manos libres controlado por la voz
ES8102434A1 (es) Un dispositivo amplificador perfeccionado
SU634482A1 (ru) Телефонный аппарат,управл емый голосом
GB852276A (en) Improvements in or relating to amplifier arrangements for loud speaking telephone instruments
GB936756A (en) Improvements in or relating to loudspeaking telephone systems
SU468379A1 (ru) Устройство дл подавлени помех в паузах между сигналами
JPS561649A (en) Conference telephone equipment
JPS6468006A (en) Power amplifier provided with fader vr
GB1350142A (en) Controllable attenuator
KR850006810A (ko) 음성 제어식의 손잡이 없는 전화 설비용 회로구성
GB917689A (en) Improved amplifying, impedance changing or level-changing apparatus
JPS5489404A (en) Amplifier for telephone set
JPS55128958A (en) Talking system
JPS56149861A (en) Priority giving system of digital service equipment for conference
JPS5459014A (en) Talking device
JPS56112194A (en) Omnibus circuit device
JPS56117462A (en) Loudspeaking telephone device
GB853770A (en) Improvements in or relating to loudspeaking telephone systems
JPS57142063A (en) Audio switch circuit
JPS6419844A (en) Cordless telephone set
JPS5721105A (en) Audio power amplifier
KR960020208A (ko) 교환 시스템의 방송회로

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970401