ES2065897T3 - Telefono de manos libres que utiliza audio comprimido digitalmente para controlar la ganancia en el camino de voz. - Google Patents
Telefono de manos libres que utiliza audio comprimido digitalmente para controlar la ganancia en el camino de voz.Info
- Publication number
- ES2065897T3 ES2065897T3 ES88106502T ES88106502T ES2065897T3 ES 2065897 T3 ES2065897 T3 ES 2065897T3 ES 88106502 T ES88106502 T ES 88106502T ES 88106502 T ES88106502 T ES 88106502T ES 2065897 T3 ES2065897 T3 ES 2065897T3
- Authority
- ES
- Spain
- Prior art keywords
- switch
- voice
- amplifier
- recovery
- microcomputer
- 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 - Lifetime
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
UN RADIOTELEFONO MOVIL (120) INCLUYE UN MICROCOMPUTADOR (220), UNA CIRCUITERIA DE CONTROL DE ALTAVOZ (106) Y UNA RADIO MOVIL (112). LA RADIO (112) INCLUYE UN TRANSMISOR (242), UN RECEPTOR (244) Y UN DUPLICADOR (243) A LA ANTENA MOVIL. EN LA TRAYECTORIA DE TRANSMISION DE VOZ, LA CIRCULACION (106) INCLUYE UN CONMUTADOR (201), UN AMPLIFICADOR DE RECUPERACION VARIABLE (202), UN AMPLIFICADOR COMPRESOR (203), UN CONMUTADOR (204), UN AMPLIFICADOR DE RECUPERACION VARIABLE (205) Y DOS REGISTRADORES (212 UITERIA (232), UN AMPLIFICADOR DE EXPANSION (233), UN CONMUTADOR (234), UN AMPLIFICADOR DE RECUPERACION VARIABLE (235), UN CONMUTADOR (236) Y DOS REGISTRADORES (216 (106) TAMBIEN INCLUYE UN FILTRO / RECTIFICADOR (224), UN CONVERTIDOR COMPRESOR (A/D) ANALOGO 218 (214 ES (212 LUYE DIRIGIR, CONTROLAR Y ALINEAR DATOS. EL MICROCOMPUTADOR (220) UTILIZA MUESTRAS DIGITALES DE UN CONVERTIDOR A/D (225) PARA GENERAR CONTINUAMENTE Y ALMACENAR EN SU MEMORIA, UNA SEÑAL ENVUELTA Y UNA SEÑAL DE VALLE PARA TRANSMITIRY RECIBIR LAS TRAYECTORIAS DE VOZ. PARA DETERMINAR CUANDO CONMUTAR LA RECUPERACION ENTRE LAS TRAYECTORIAS DE VOZ, EL MICROCOMPUTADOR COMPARA LA SEÑAL ENVUELTA CON LA DE VALLE PARA DETECTAR LA PRESENCIA DE SEÑALES DE VOZ, Y SI LAS SEÑALES DE VOZ SON DETECTADAS POR UN TIEMPO PRE LA RECUPERACION DE LA OTRA TRAYECTORIA ES DISMINUIDA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/042,143 US4741018A (en) | 1987-04-24 | 1987-04-24 | Speakerphone using digitally compressed audio to control voice path gain |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2065897T3 true ES2065897T3 (es) | 1995-03-01 |
Family
ID=21920260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES88106502T Expired - Lifetime ES2065897T3 (es) | 1987-04-24 | 1988-04-22 | Telefono de manos libres que utiliza audio comprimido digitalmente para controlar la ganancia en el camino de voz. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4741018A (es) |
EP (1) | EP0288078B1 (es) |
AR (1) | AR241476A1 (es) |
AT (1) | ATE116783T1 (es) |
BR (1) | BR8801869A (es) |
DE (1) | DE3852666T2 (es) |
ES (1) | ES2065897T3 (es) |
HK (1) | HK46297A (es) |
IL (1) | IL85191A (es) |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
JPS63233638A (ja) * | 1987-03-21 | 1988-09-29 | Aisin Seiki Co Ltd | 車載電話装置 |
US4843621A (en) * | 1987-04-24 | 1989-06-27 | Motorola, Inc. | Speakerphone using digitally compressed audio to detect acoustic feedback |
US4953147A (en) * | 1987-11-04 | 1990-08-28 | The Stnadard Oil Company | Measurement of corrosion with curved ultrasonic transducer, rule-based processing of full echo waveforms |
US4893286A (en) * | 1987-11-04 | 1990-01-09 | Standard Oil Company | System and method for preprocessing and transmitting echo waveform information |
USRE36934E (en) * | 1988-07-19 | 2000-10-31 | Sgs-Thomson Microelectronics S.A. | Control device for a hands-free telephone set |
US4991197A (en) * | 1988-09-01 | 1991-02-05 | Intelligence Technology Corporation | Method and apparatus for controlling transmission of voice and data signals |
US4879745A (en) * | 1988-10-12 | 1989-11-07 | Ibm Corporation | Half-duplex speakerphone |
US4912758A (en) * | 1988-10-26 | 1990-03-27 | International Business Machines Corporation | Full-duplex digital speakerphone |
FR2641150B1 (es) * | 1988-12-28 | 1991-04-19 | Sgs Thomson Microelectronics | |
US5278990A (en) * | 1989-10-10 | 1994-01-11 | Motorola, Inc. | Two way radio communication system |
US5014294A (en) * | 1990-02-01 | 1991-05-07 | Motorola Inc. | Speakerphone for cellular telephones with howl prevention, detection, elimination and determination |
US5010570A (en) * | 1990-02-20 | 1991-04-23 | Motorola, Inc. | Method for active feedback suppression |
JPH04152719A (ja) * | 1990-10-16 | 1992-05-26 | Fujitsu Ltd | 音声検出回路 |
JP2941963B2 (ja) * | 1991-01-17 | 1999-08-30 | キヤノン株式会社 | コードレス電話装置 |
DE4130045A1 (de) * | 1991-09-10 | 1993-03-18 | Standard Elektrik Lorenz Ag | Schaltungsanordnung zur dynamiksteuerung eines sprachendgeraetes |
US5230089A (en) * | 1992-02-03 | 1993-07-20 | Motorola | Automated voice operated transmitter control |
WO1993019525A1 (en) * | 1992-03-23 | 1993-09-30 | Euphonix, Inc. | Visual dynamics management for audio instrument |
US5613228A (en) * | 1992-07-06 | 1997-03-18 | Micron Technology, Inc. | Gain adjustment method in two-way communication systems |
US5357567A (en) * | 1992-08-14 | 1994-10-18 | Motorola, Inc. | Method and apparatus for volume switched gain control |
US5394476A (en) * | 1992-12-17 | 1995-02-28 | Motorola, Inc. | Volume control device |
JP2576690B2 (ja) * | 1993-03-11 | 1997-01-29 | 日本電気株式会社 | ディジタル携帯電話機 |
US5546383A (en) * | 1993-09-30 | 1996-08-13 | Cooley; David M. | Modularly clustered radiotelephone system |
US5467393A (en) * | 1993-11-24 | 1995-11-14 | Ericsson Inc. | Method and apparatus for volume and intelligibility control for a loudspeaker |
US6934558B1 (en) * | 1993-12-15 | 2005-08-23 | Mlr, Llc | Adaptive omni-modal radio apparatus and methods |
US5761621A (en) | 1993-12-15 | 1998-06-02 | Spectrum Information Technologies, Inc. | Apparatus and methods for networking omni-modal radio devices |
US5630205A (en) * | 1994-06-14 | 1997-05-13 | Ericsson Inc. | Mobile phone having voice message capability |
US5649008A (en) * | 1994-08-02 | 1997-07-15 | Motorola, Inc. | Circuit and method of reducing sidetone in a receive signal path |
US5588041A (en) * | 1995-01-05 | 1996-12-24 | Motorola, Inc. | Cellular speakerphone and method of operation thereof |
US5715309A (en) * | 1995-03-03 | 1998-02-03 | Advanced Micro Devices, Inc. | Conversion of compressed speech codes between attenuated and unattenuated formats |
JPH08331234A (ja) | 1995-03-24 | 1996-12-13 | Canon Inc | 電話装置 |
US5845216A (en) * | 1995-05-30 | 1998-12-01 | Sierra Wireless, Inc. | Optimized companding for communication over cellular systems |
GB2318023B (en) * | 1995-05-31 | 1998-09-02 | Casio Phonemate Inc | Speakerphone, speakerphone system and method of operating a speakerphone |
CN1141552A (zh) * | 1995-05-31 | 1997-01-29 | 尾电话伴侣公司 | 软件扬声器电话系统与操作扬声器电话的方法 |
DE19600965C2 (de) * | 1996-01-12 | 2001-08-23 | Siemens Ag | Mobiles Fernsprechendgerät |
US5966438A (en) * | 1996-03-05 | 1999-10-12 | Ericsson Inc. | Method and apparatus for adaptive volume control for a radiotelephone |
US5832390A (en) * | 1996-07-03 | 1998-11-03 | Ericsson, Inc. | Untethered microphone and base unit |
US6978009B1 (en) * | 1996-08-20 | 2005-12-20 | Legerity, Inc. | Microprocessor-controlled full-duplex speakerphone using automatic gain control |
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 |
US7072476B2 (en) * | 1997-02-18 | 2006-07-04 | Matech, Inc. | Audio headset |
US20080207197A1 (en) | 1997-07-30 | 2008-08-28 | Steven Tischer | Apparatus, method, and computer-readable medium for interfacing devices with communications networks |
US20080194251A1 (en) * | 1997-07-30 | 2008-08-14 | Steven Tischer | Apparatus and method for providing communications and connection-oriented services to devices |
US20080220776A1 (en) * | 1997-07-30 | 2008-09-11 | Steven Tischer | Interface devices for facilitating communications between devices and communications networks |
US7149514B1 (en) | 1997-07-30 | 2006-12-12 | Bellsouth Intellectual Property Corp. | Cellular docking station |
US20080207202A1 (en) * | 1997-07-30 | 2008-08-28 | Zellner Samuel N | Apparatus and method for providing a user interface for facilitating communications between devices |
US7194083B1 (en) | 2002-07-15 | 2007-03-20 | Bellsouth Intellectual Property Corporation | System and method for interfacing plain old telephone system (POTS) devices with cellular networks |
US20080195641A1 (en) * | 1997-07-30 | 2008-08-14 | Steven Tischer | Apparatus and method for aggregating and accessing data according to user information |
US6411802B1 (en) | 1999-03-15 | 2002-06-25 | Bellsouth Intellectual Property Management Corporation | Wireless backup telephone device |
US6717980B1 (en) * | 1999-05-24 | 2004-04-06 | Koninklijke Philips Electronics N.V. | Reduction of transmitter induced cross modulation in a receiver |
WO2001072015A1 (en) | 2000-03-21 | 2001-09-27 | Leedom Charles M Jr | A tiered wireless, multi-modal access system and method |
GB0021974D0 (en) * | 2000-09-07 | 2000-10-25 | Simoco Int Ltd | Echo reduction in two-way communication |
US7489790B2 (en) * | 2000-12-05 | 2009-02-10 | Ami Semiconductor, Inc. | Digital automatic gain control |
US6957089B2 (en) * | 2001-05-31 | 2005-10-18 | Coby Electronics Corporation | Compact hands-free adapter for use with a cellular telephone |
US7242784B2 (en) * | 2001-09-04 | 2007-07-10 | Motorola Inc. | Dynamic gain control of audio in a communication device |
US7120454B1 (en) * | 2001-12-26 | 2006-10-10 | Bellsouth Intellectual Property Corp. | Auto sensing home base station for mobile telephone with remote answering capabilites |
US8543098B2 (en) | 2002-07-15 | 2013-09-24 | At&T Intellectual Property I, L.P. | Apparatus and method for securely providing communications between devices and networks |
US8000682B2 (en) * | 2002-07-15 | 2011-08-16 | At&T Intellectual Property I, L.P. | Apparatus and method for restricting access to data |
US7200424B2 (en) | 2002-07-15 | 2007-04-03 | Bellsouth Intelectual Property Corporation | Systems and methods for restricting the use and movement of telephony devices |
US8275371B2 (en) | 2002-07-15 | 2012-09-25 | At&T Intellectual Property I, L.P. | Apparatus and method for providing communications and connection-oriented services to devices |
US8554187B2 (en) | 2002-07-15 | 2013-10-08 | At&T Intellectual Property I, L.P. | Apparatus and method for routing communications between networks and devices |
US8416804B2 (en) | 2002-07-15 | 2013-04-09 | At&T Intellectual Property I, L.P. | Apparatus and method for providing a user interface for facilitating communications between devices |
US8526466B2 (en) | 2002-07-15 | 2013-09-03 | At&T Intellectual Property I, L.P. | Apparatus and method for prioritizing communications between devices |
US7826805B2 (en) * | 2003-11-11 | 2010-11-02 | Matech, Inc. | Automatic-switching wireless communication device |
KR100851286B1 (ko) * | 2003-11-11 | 2008-08-08 | 마테크, 인코포레이티드 | 단일 트랜스듀서를 갖는 쌍방향 통신 장치 |
US8315379B2 (en) * | 2004-11-10 | 2012-11-20 | Matech, Inc. | Single transducer full duplex talking circuit |
US20060136201A1 (en) * | 2004-12-22 | 2006-06-22 | Motorola, Inc. | Hands-free push-to-talk radio |
KR100780440B1 (ko) * | 2006-09-19 | 2007-11-29 | 삼성전자주식회사 | 휴대 단말기 및 그의 포화 감지를 이용한 음압 조절 방법 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377559A (en) * | 1965-12-30 | 1968-04-09 | Automatic Elect Lab | Compandoring techniques for high-frequency radio circuits |
FR2255762B1 (es) * | 1973-12-21 | 1976-07-23 | Ibm France | |
US4123711A (en) * | 1977-01-24 | 1978-10-31 | Canadian Patents And Development Limited | Synchronized compressor and expander voice processing system for radio telephone |
FR2454231A1 (fr) * | 1979-04-13 | 1980-11-07 | Thomson Csf | Emetteur-recepteur a commande automatique d'alternat et reseau de telecommunications comportant un tel emetteur-recepteur |
US4378603A (en) * | 1980-12-23 | 1983-03-29 | Motorola, Inc. | Radiotelephone with hands-free operation |
US4550426A (en) * | 1981-12-31 | 1985-10-29 | Motorola, Inc. | Method and means of detecting the presence of a signal representing voice and of compressing the level of the signal |
US4400584A (en) * | 1982-04-05 | 1983-08-23 | Motorola, Inc. | Speakerphone for radio and, landline telephones |
FR2537756B1 (fr) * | 1982-12-10 | 1985-11-08 | Thomson Csf | Dispositif de traitement de la parole pour equipements radioelectriques adaptes a la transmission et a la reception de la parole |
GB2137458B (en) * | 1983-03-01 | 1986-11-19 | Standard Telephones Cables Ltd | Digital handsfree telephone |
JPS60101769A (ja) * | 1983-11-09 | 1985-06-05 | Hitachi Ltd | 信号伝送装置 |
JPS6196855A (ja) * | 1984-10-18 | 1986-05-15 | Rohm Co Ltd | 送受切換装置 |
GB2174578B (en) * | 1985-05-04 | 1988-11-09 | Stc Plc | Loud speaking telephone |
-
1987
- 1987-04-24 US US07/042,143 patent/US4741018A/en not_active Expired - Lifetime
-
1988
- 1988-01-25 IL IL85191A patent/IL85191A/xx not_active IP Right Cessation
- 1988-02-09 AR AR88310047A patent/AR241476A1/es active
- 1988-04-20 BR BR8801869A patent/BR8801869A/pt not_active IP Right Cessation
- 1988-04-22 ES ES88106502T patent/ES2065897T3/es not_active Expired - Lifetime
- 1988-04-22 DE DE3852666T patent/DE3852666T2/de not_active Expired - Fee Related
- 1988-04-22 EP EP88106502A patent/EP0288078B1/en not_active Expired - Lifetime
- 1988-04-22 AT AT88106502T patent/ATE116783T1/de active
-
1997
- 1997-04-10 HK HK46297A patent/HK46297A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3852666D1 (de) | 1995-02-16 |
EP0288078A3 (en) | 1989-05-31 |
EP0288078B1 (en) | 1995-01-04 |
BR8801869A (pt) | 1988-11-22 |
AR241476A1 (es) | 1992-07-31 |
EP0288078A2 (en) | 1988-10-26 |
HK46297A (en) | 1997-04-18 |
US4741018A (en) | 1988-04-26 |
IL85191A0 (en) | 1988-07-31 |
IL85191A (en) | 1991-07-18 |
DE3852666T2 (de) | 1995-08-17 |
ATE116783T1 (de) | 1995-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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