ATE116783T1 - Lauthörfernsprechgerät mit digital komprimiertem tonanteil zwecks regelung der sprachkanalverstärkung. - Google Patents

Lauthörfernsprechgerät mit digital komprimiertem tonanteil zwecks regelung der sprachkanalverstärkung.

Info

Publication number
ATE116783T1
ATE116783T1 AT88106502T AT88106502T ATE116783T1 AT E116783 T1 ATE116783 T1 AT E116783T1 AT 88106502 T AT88106502 T AT 88106502T AT 88106502 T AT88106502 T AT 88106502T AT E116783 T1 ATE116783 T1 AT E116783T1
Authority
AT
Austria
Prior art keywords
controlling
voice channel
sound component
headphone device
digitally compressed
Prior art date
Application number
AT88106502T
Other languages
English (en)
Inventor
Bryan Alan Potratz
Patrick Joseph Marry
David Michael Hess
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ATE116783T1 publication Critical patent/ATE116783T1/de

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)
AT88106502T 1987-04-24 1988-04-22 Lauthörfernsprechgerät mit digital komprimiertem tonanteil zwecks regelung der sprachkanalverstärkung. ATE116783T1 (de)

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
ATE116783T1 true ATE116783T1 (de) 1995-01-15

Family

ID=21920260

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88106502T ATE116783T1 (de) 1987-04-24 1988-04-22 Lauthörfernsprechgerät mit digital komprimiertem tonanteil zwecks regelung der sprachkanalverstärkung.

Country Status (9)

Country Link
US (1) US4741018A (de)
EP (1) EP0288078B1 (de)
AR (1) AR241476A1 (de)
AT (1) ATE116783T1 (de)
BR (1) BR8801869A (de)
DE (1) DE3852666T2 (de)
ES (1) ES2065897T3 (de)
HK (1) HK46297A (de)
IL (1) IL85191A (de)

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US4893286A (en) * 1987-11-04 1990-01-09 Standard Oil Company System and method for preprocessing and transmitting echo waveform information
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
USRE36934E (en) * 1988-07-19 2000-10-31 Sgs-Thomson Microelectronics S.A. Control device for a hands-free telephone set
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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
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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
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US5613228A (en) * 1992-07-06 1997-03-18 Micron Technology, Inc. Gain adjustment method in two-way communication systems
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US5394476A (en) * 1992-12-17 1995-02-28 Motorola, Inc. Volume control device
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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
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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
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
GB2318024B (en) * 1995-05-31 1998-09-02 Casio Phonemate Inc Speakerphone, speakerphone system and method of operating a speakerphone
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
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
US7149514B1 (en) 1997-07-30 2006-12-12 Bellsouth Intellectual Property Corp. Cellular docking station
US20080195641A1 (en) * 1997-07-30 2008-08-14 Steven Tischer Apparatus and method for aggregating and accessing data according to user information
US20080194251A1 (en) * 1997-07-30 2008-08-14 Steven Tischer Apparatus and method for providing communications and connection-oriented services to devices
US20080207197A1 (en) 1997-07-30 2008-08-28 Steven Tischer Apparatus, method, and computer-readable medium for interfacing devices with communications networks
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
US20080207202A1 (en) * 1997-07-30 2008-08-28 Zellner Samuel N Apparatus and method for providing a user interface for facilitating communications between devices
US20080220776A1 (en) * 1997-07-30 2008-09-11 Steven Tischer Interface devices for facilitating communications between devices and communications networks
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
HK1052808B (en) 2000-03-22 2014-05-02 Mobile Data Off-Loading Inc. A tiered wireless, multi-modal access system
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
US8526466B2 (en) 2002-07-15 2013-09-03 At&T Intellectual Property I, L.P. Apparatus and method for prioritizing communications between devices
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
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
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
US8000682B2 (en) * 2002-07-15 2011-08-16 At&T Intellectual Property I, L.P. Apparatus and method for restricting access to data
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
US7200424B2 (en) 2002-07-15 2007-04-03 Bellsouth Intelectual Property Corporation Systems and methods for restricting the use and movement of telephony devices
RU2370890C2 (ru) * 2003-11-11 2009-10-20 Матек, Инк. Устройство двухсторонней связи, содержащее один трансдюсер
US7826805B2 (en) * 2003-11-11 2010-11-02 Matech, Inc. Automatic-switching wireless communication device
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

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FR2255762B1 (de) * 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
GB2174578B (en) * 1985-05-04 1988-11-09 Stc Plc Loud speaking telephone

Also Published As

Publication number Publication date
EP0288078A3 (en) 1989-05-31
ES2065897T3 (es) 1995-03-01
EP0288078A2 (de) 1988-10-26
IL85191A0 (en) 1988-07-31
DE3852666T2 (de) 1995-08-17
IL85191A (en) 1991-07-18
DE3852666D1 (de) 1995-02-16
HK46297A (en) 1997-04-18
EP0288078B1 (de) 1995-01-04
US4741018A (en) 1988-04-26
BR8801869A (pt) 1988-11-22
AR241476A1 (es) 1992-07-31

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