DE69129323D1 - Hilfsdämpfungsgliedanordnung zur Verwendung in sprachschaltbaren Lautfernsprechern und Verfahren zur selektiven Einführung von Kommunikationsverlusten in Lautfernsprechwege - Google Patents

Hilfsdämpfungsgliedanordnung zur Verwendung in sprachschaltbaren Lautfernsprechern und Verfahren zur selektiven Einführung von Kommunikationsverlusten in Lautfernsprechwege

Info

Publication number
DE69129323D1
DE69129323D1 DE69129323T DE69129323T DE69129323D1 DE 69129323 D1 DE69129323 D1 DE 69129323D1 DE 69129323 T DE69129323 T DE 69129323T DE 69129323 T DE69129323 T DE 69129323T DE 69129323 D1 DE69129323 D1 DE 69129323D1
Authority
DE
Germany
Prior art keywords
loudspeakers
switchable
voice
telephone lines
selective introduction
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 - Fee Related
Application number
DE69129323T
Other languages
English (en)
Other versions
DE69129323T2 (de
Inventor
Motoyoshi Komoda
Ikio Yoshida
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of DE69129323D1 publication Critical patent/DE69129323D1/de
Application granted granted Critical
Publication of DE69129323T2 publication Critical patent/DE69129323T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • 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
DE69129323T 1990-11-19 1991-11-18 Hilfsdämpfungsgliedanordnung zur Verwendung in sprachschaltbaren Lautfernsprechern und Verfahren zur selektiven Einführung von Kommunikationsverlusten in Lautfernsprechwege Expired - Fee Related DE69129323T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2313050A JP2634946B2 (ja) 1990-11-19 1990-11-19 ハンズフリー補助回路

Publications (2)

Publication Number Publication Date
DE69129323D1 true DE69129323D1 (de) 1998-06-04
DE69129323T2 DE69129323T2 (de) 1998-11-26

Family

ID=18036606

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69129323T Expired - Fee Related DE69129323T2 (de) 1990-11-19 1991-11-18 Hilfsdämpfungsgliedanordnung zur Verwendung in sprachschaltbaren Lautfernsprechern und Verfahren zur selektiven Einführung von Kommunikationsverlusten in Lautfernsprechwege

Country Status (8)

Country Link
US (1) US5430796A (de)
EP (1) EP0486990B1 (de)
JP (1) JP2634946B2 (de)
KR (1) KR960001993B1 (de)
AU (1) AU654156B2 (de)
CA (1) CA2055794C (de)
DE (1) DE69129323T2 (de)
HK (1) HK1005494A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2702423B2 (ja) * 1994-11-11 1998-01-21 埼玉日本電気株式会社 切替式エコーキャンセラ
FR2731123B1 (fr) * 1995-02-27 1997-05-09 Prescom Sarl Correction de gain de haut-parleur pour un terminal telephonique mains-libres
US5692042A (en) * 1995-05-31 1997-11-25 Casio Phonemate, Inc. Speakerphone controlled by a comparator with hysteresis
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
EP0865701A2 (de) * 1996-10-04 1998-09-23 Koninklijke Philips Electronics N.V. Telekommunikationssystem, teilnehmereinheit und fernsehgerät mit einer teilnehmervorrichtung
EP1569357A1 (de) * 1997-09-16 2005-08-31 Sanyo Electric Co., Ltd. Sprachschalter
JP3220979B2 (ja) * 1998-01-09 2001-10-22 日本電気株式会社 音声スイッチ
TW517470B (en) * 2000-11-21 2003-01-11 School Juridical Person Of Fuk Oscillation preventing circuit
US8295475B2 (en) * 2006-01-13 2012-10-23 Microsoft Corporation Selective glitch detection, clock drift compensation, and anti-clipping in audio echo cancellation
US7831035B2 (en) * 2006-04-28 2010-11-09 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and center clipping
US7773743B2 (en) * 2006-04-28 2010-08-10 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and residual echo suppression
WO2009058241A2 (en) 2007-10-29 2009-05-07 Us Tower Corporation Polygon mast
US8380253B2 (en) * 2008-02-15 2013-02-19 Microsoft Corporation Voice switching for voice communication on computers
US8369251B2 (en) * 2008-06-20 2013-02-05 Microsoft Corporation Timestamp quality assessment for assuring acoustic echo canceller operability

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242643B2 (de) * 1973-10-18 1977-10-26
CA1186826A (en) * 1981-03-18 1985-05-07 Jin H. Yun Loudspeaker telephone system
JPH063950B2 (ja) * 1985-02-28 1994-01-12 株式会社東芝 拡声電話装置
JP2751244B2 (ja) * 1988-02-18 1998-05-18 日本電気株式会社 ハンズフリー回路及びハンズフリー制御方式
US4879745A (en) * 1988-10-12 1989-11-07 Ibm Corporation Half-duplex speakerphone
US5007046A (en) * 1988-12-28 1991-04-09 At&T Bell Laboratories Computer controlled adaptive speakerphone
US5016271A (en) * 1989-05-30 1991-05-14 At&T Bell Laboratories Echo canceler-suppressor speakerphone
US5212722A (en) * 1989-07-24 1993-05-18 Nec Corporation Hands-free telephone having a handset volume attenuator for controlling speaker volume in a hands-free adaptor
US5014294A (en) * 1990-02-01 1991-05-07 Motorola Inc. Speakerphone for cellular telephones with howl prevention, detection, elimination and determination

Also Published As

Publication number Publication date
AU8800491A (en) 1992-05-21
US5430796A (en) 1995-07-04
EP0486990A2 (de) 1992-05-27
KR920011158A (ko) 1992-06-27
JPH04183153A (ja) 1992-06-30
JP2634946B2 (ja) 1997-07-30
CA2055794A1 (en) 1992-05-20
KR960001993B1 (ko) 1996-02-08
CA2055794C (en) 1997-02-11
DE69129323T2 (de) 1998-11-26
EP0486990B1 (de) 1998-04-29
HK1005494A1 (en) 1999-01-08
EP0486990A3 (en) 1993-12-15
AU654156B2 (en) 1994-10-27

Similar Documents

Publication Publication Date Title
DK0787414T3 (da) Systemer og fremgangsmåder til selektiv accept af telefonopkald uden etablering af talekommunikation
EP0505106A3 (en) Split service in cellular telecommunications networks and methods therefore
NO970242D0 (no) Cellulært telefonsystem omfattende cellulære telefoner
DE69129515D1 (de) Einrichtung und Verfahren zur Anrufvermittlung für mobile Telefonteilnehmer
FI102234B1 (fi) Digitaalinen matkaviestinjärjestelmä ja menetelmiä päättyvän puhelun käsittelemiseksi
BR9205507A (pt) Aparelho de telefone celular e processo de operacao de um radiotelefone
DK134396A (da) Kanalskandering i cellenet telefonsystem
DE69129437T2 (de) Methode zur Anzeige von Sprachpost für zellulare Telephonsysteme
DE69129323T2 (de) Hilfsdämpfungsgliedanordnung zur Verwendung in sprachschaltbaren Lautfernsprechern und Verfahren zur selektiven Einführung von Kommunikationsverlusten in Lautfernsprechwege
DE69727696T2 (de) Fernsprechverzeichnisgerät und verfahren
DE69333272D1 (de) Schnelles eingeben von merkmalen in fernmeldenetze
DE59712352D1 (de) Verfahren und telefonnetz zur vermittlung von telefonverbindungen
DE69531037D1 (de) Kommunikationsendstellengerät und Verfahren zur Meldung eines ankommenden Anrufs
DE69328710D1 (de) Kommunikationsendgerät und Kommunikationsverfahren
IL112126A0 (en) Wireless banking system and method using cellular telephone communication
EP0505105A3 (en) Communication request retry in cellular telecommunications networks and methods therefor
FI971884A0 (fi) Tietoliikennemenetelmä ja -järjestely
NO995309L (no) Fremgangsmåte og system for bruk i telekommunikasjonsnett
DE69532064D1 (de) Kommunikationsendstellengerät und Verfahren zur Erzeugung eines abgehenden Telefonrufs
IT8321324A0 (it) Disposizione di cornetta telefonica e cuffia in combinazione
DE50014013D1 (de) Verfahren und kommunikationsanordnung zur realisierung von teilnehmerleistungsmerkmalen
NO954937D0 (no) Telekommunikasjonssystem, telekommunikasjonssentral og fremgangsmåte relatert dertil
FI99068C (fi) Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelin
SE9002300D0 (sv) Tele- och liknande telekommunikationsapparat
DE69130207T2 (de) Mobiltelephon und Verfahren zur Schaltung einer Audiovorrichtung des Mobiltelephons

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee