DE69120542D1 - Rauschunterdrückung telefonhörer - Google Patents

Rauschunterdrückung telefonhörer

Info

Publication number
DE69120542D1
DE69120542D1 DE69120542T DE69120542T DE69120542D1 DE 69120542 D1 DE69120542 D1 DE 69120542D1 DE 69120542 T DE69120542 T DE 69120542T DE 69120542 T DE69120542 T DE 69120542T DE 69120542 D1 DE69120542 D1 DE 69120542D1
Authority
DE
Germany
Prior art keywords
noise reduction
telephone handset
reduction telephone
handset
noise
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
DE69120542T
Other languages
English (en)
Other versions
DE69120542T2 (de
Inventor
Michael Hollier
Kevin Welsby
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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
Priority claimed from GB909019448A external-priority patent/GB9019448D0/en
Priority claimed from GB909025853A external-priority patent/GB9025853D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of DE69120542D1 publication Critical patent/DE69120542D1/de
Publication of DE69120542T2 publication Critical patent/DE69120542T2/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
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
DE69120542T 1990-09-06 1991-09-05 " Rauschunterdrückender Handapparat " Expired - Fee Related DE69120542T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909019448A GB9019448D0 (en) 1990-09-06 1990-09-06 Noise-cancelling handset
GB909025853A GB9025853D0 (en) 1990-11-28 1990-11-28 Noise-cancelling handset
PCT/GB1991/001513 WO1992004792A1 (en) 1990-09-06 1991-09-05 Noise-cancelling handset

Publications (2)

Publication Number Publication Date
DE69120542D1 true DE69120542D1 (de) 1996-08-01
DE69120542T2 DE69120542T2 (de) 1996-11-28

Family

ID=26297605

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69120542T Expired - Fee Related DE69120542T2 (de) 1990-09-06 1991-09-05 " Rauschunterdrückender Handapparat "

Country Status (12)

Country Link
US (1) US5341420A (de)
EP (1) EP0547138B1 (de)
JP (1) JPH06505132A (de)
KR (1) KR100199454B1 (de)
AU (1) AU645136B2 (de)
CA (1) CA2090681C (de)
DE (1) DE69120542T2 (de)
ES (1) ES2090350T3 (de)
HK (1) HK112297A (de)
IE (1) IE77869B1 (de)
NZ (1) NZ239695A (de)
WO (1) WO1992004792A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473684A (en) * 1994-04-21 1995-12-05 At&T Corp. Noise-canceling differential microphone assembly
JP2550914B2 (ja) * 1994-06-21 1996-11-06 日本電気株式会社 折りたたみ型携帯電話装置
US5651074A (en) * 1995-05-11 1997-07-22 Lucent Technologies Inc. Noise canceling gradient microphone assembly
USD384673S (en) * 1995-11-09 1997-10-07 Lucent Technologies Inc. Telephone handset
GB2316814B (en) * 1996-08-30 2001-02-28 Nokia Mobile Phones Ltd A radio telephone connector
US6009184A (en) * 1996-10-08 1999-12-28 Umevoice, Inc. Noise control device for a boom mounted noise-canceling microphone
US5854848A (en) * 1996-10-08 1998-12-29 Umevoice, Inc. Noise control device
US6285772B1 (en) 1999-07-20 2001-09-04 Umevoice, Inc. Noise control device
USD427999S (en) * 1999-07-20 2000-07-11 Umevoice, Inc. Element for a noise cancellation device
USD427998S (en) * 1999-07-20 2000-07-11 Umevoice, Inc. Noise cancellation device
USD428408S (en) * 1999-07-20 2000-07-18 Ume Voice, Inc. Element for a noise cancellation device
US6396932B1 (en) 1999-07-21 2002-05-28 Umevoice, Inc. Pluggable noise-controlling apparatus and method
NO20076609A (no) 2007-12-21 2009-03-16 Tandberg Telecom As Mikrofonanordning
US9628596B1 (en) 2016-09-09 2017-04-18 Sorenson Ip Holdings, Llc Electronic device including a directional microphone

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004103A (en) * 1958-12-22 1961-10-10 Chance Vought Corp Noise-reducing microphone assembly
US3204031A (en) * 1961-08-29 1965-08-31 Akg Akustische Kino Geraete Moving-coil microphone arrangement
US3573400A (en) * 1968-08-14 1971-04-06 Bell Telephone Labor Inc Directional microphone
US3835263A (en) * 1973-02-05 1974-09-10 Industrial Research Prod Inc Microphone assembly operable in directional and non-directional modes
US4463222A (en) * 1981-12-23 1984-07-31 Roanwell Corporation Noise canceling transmitter
US4555598A (en) * 1983-09-21 1985-11-26 At&T Bell Laboratories Teleconferencing acoustic transducer
US4584702A (en) * 1983-12-19 1986-04-22 Walker Equipment Corporation Noise cancelling telephone transmitter insertable in telephone handset receptacle
JPS62110349A (ja) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd 送話器
US5239578A (en) * 1990-05-15 1993-08-24 Plantronics, Inc. Noise cancelling apparatus for a telephone handset

Also Published As

Publication number Publication date
CA2090681A1 (en) 1992-03-07
EP0547138B1 (de) 1996-06-26
KR930702844A (ko) 1993-09-09
DE69120542T2 (de) 1996-11-28
AU645136B2 (en) 1994-01-06
ES2090350T3 (es) 1996-10-16
EP0547138A1 (de) 1993-06-23
CA2090681C (en) 1994-12-13
IE913134A1 (en) 1992-03-11
WO1992004792A1 (en) 1992-03-19
NZ239695A (en) 1994-08-26
KR100199454B1 (en) 1999-06-15
HK112297A (en) 1997-08-29
JPH06505132A (ja) 1994-06-09
AU8503391A (en) 1992-03-30
US5341420A (en) 1994-08-23
IE77869B1 (en) 1998-01-14

Similar Documents

Publication Publication Date Title
DE69223416D1 (de) Freisprechtelefongerät
DE69230767T2 (de) Geräuschverminderungsmikrophonapparat
FI925387A (fi) Soekarrangemang i centralsystem foer cellulaer mobiltelefoni
FI924090A (fi) Krypteringssystem foer mobiltelefon
DE69422529T2 (de) Telefonhandapparat
FR2693614B1 (fr) Telephone portatif.
DE69516318D1 (de) Telephon
DE69315792D1 (de) Fernsprechhandapparat mit Geräuschunterdrückung
DE69120542D1 (de) Rauschunterdrückung telefonhörer
GB2241132B (en) Mobile telephone
DE69113977D1 (de) Mobiltelefon.
DE69116661D1 (de) Kombinierter telefonapparat
AU111253S (en) Mobile telephone
GB9021972D0 (en) Telephone handset
DE29515644U1 (de) Fernsprechhandapparat
DE59712863D1 (de) Telefonhandapparat
EP0490215A3 (en) Hands-free telephone set
KR920015956U (ko) 전화기의 송수화 회로
KR960015804U (ko) 전화기의 수화기 잠금장치
KR950015898U (ko) 잡음 차단용 전화기
CA67605S (en) Telephone handset
CA65497S (en) Telephone handset
KR950028902U (ko) 전화기의 송수화부 잠금장치
KR950004993U (ko) 전화기용 송수화기
KR920008557U (ko) 전화벨

Legal Events

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