NO310540B1 - Telefon for håndfri betjening - Google Patents

Telefon for håndfri betjening Download PDF

Info

Publication number
NO310540B1
NO310540B1 NO19920310A NO920310A NO310540B1 NO 310540 B1 NO310540 B1 NO 310540B1 NO 19920310 A NO19920310 A NO 19920310A NO 920310 A NO920310 A NO 920310A NO 310540 B1 NO310540 B1 NO 310540B1
Authority
NO
Norway
Prior art keywords
signal
voltage
output
detection circuit
control
Prior art date
Application number
NO19920310A
Other languages
English (en)
Norwegian (no)
Other versions
NO920310L (no
NO920310D0 (no
Inventor
Kyoung-Jun Kim
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of NO920310D0 publication Critical patent/NO920310D0/no
Publication of NO920310L publication Critical patent/NO920310L/no
Publication of NO310540B1 publication Critical patent/NO310540B1/no

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/08Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/04Supports for telephone transmitters or receivers
    • H04M1/06Hooks; Cradles

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
NO19920310A 1991-05-27 1992-01-23 Telefon for håndfri betjening NO310540B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910008595A KR940002146B1 (ko) 1991-05-27 1991-05-27 핸드프리 작동의 유무선 전화기

Publications (3)

Publication Number Publication Date
NO920310D0 NO920310D0 (no) 1992-01-23
NO920310L NO920310L (no) 1992-11-30
NO310540B1 true NO310540B1 (no) 2001-07-16

Family

ID=19314969

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19920310A NO310540B1 (no) 1991-05-27 1992-01-23 Telefon for håndfri betjening

Country Status (6)

Country Link
US (1) US5396550A (fi)
KR (1) KR940002146B1 (fi)
DK (1) DK207791A (fi)
FI (1) FI920393A (fi)
NO (1) NO310540B1 (fi)
SE (1) SE9200053L (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100327731B1 (ko) * 1995-07-04 2002-07-31 삼성전자 주식회사 스피커폰통화종료시통화로자동절단회로및자동대기방법
US5892823A (en) 1996-03-27 1999-04-06 Hello Direct, Inc. Smart interface technology
KR100247004B1 (ko) * 1997-05-13 2000-03-15 윤종용 휴대용 무선단말기의 간섭 제거 방법
JP3070523B2 (ja) * 1997-05-30 2000-07-31 日本電気株式会社 無線通信機
US6741873B1 (en) * 2000-07-05 2004-05-25 Motorola, Inc. Background noise adaptable speaker phone for use in a mobile communication device
JP4567804B1 (ja) * 2009-11-30 2010-10-20 パナソニック株式会社 ハウリング抑制装置、マイク装置、アンプ装置、拡声システムおよびハウリング抑制方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889059A (en) * 1973-03-26 1975-06-10 Northern Electric Co Loudspeaking communication terminal apparatus and method of operation
US4700382A (en) * 1986-03-03 1987-10-13 American Telephone And Telegraph Company, At&T Information Systems, Inc. Voice-switched telephone circuit with center idle state

Also Published As

Publication number Publication date
SE9200053L (sv) 1992-11-28
SE9200053D0 (sv) 1992-01-10
FI920393A (fi) 1992-11-28
KR940002146B1 (ko) 1994-03-18
FI920393A0 (fi) 1992-01-29
DK207791D0 (da) 1991-12-30
KR920022736A (ko) 1992-12-19
US5396550A (en) 1995-03-07
NO920310L (no) 1992-11-30
DK207791A (da) 1992-11-28
NO920310D0 (no) 1992-01-23

Similar Documents

Publication Publication Date Title
US20080033719A1 (en) Voice modulation recognition in a radio-to-sip adapter
NO301859B1 (no) Dupleks höyttalertelefon til radio- og ledningsbaserte telefoner
US4653088A (en) Telephone circuitry with power backup
GB2213679A (en) Background noise reduction
US4700382A (en) Voice-switched telephone circuit with center idle state
NO310540B1 (no) Telefon for håndfri betjening
JPH04323938A (ja) ハンズフリー回路
US5838787A (en) Method and system for controlling echo return loss using a complementary variolosses in transmit path
TW513886B (en) Voice switching system and voice switching method
JP4400490B2 (ja) 拡声通話装置、拡声通話システム
EP0233216A1 (en) Speakerphone for radio and landline telephones
US3745262A (en) Amplifier arrangement for telephone instrument
FR2517911A1 (fr) Circuit de commande pour dispositif de conversation telephonique a mains libres
JP6624327B1 (ja) 電話機
US3369080A (en) Conference circuit for coded signals permitting conference calls between vocoder and analogue stations
JPS5894257A (ja) 音声スイツチ回路
EP0361884A2 (en) Noise reduction in speech transmitter circuits
GB2209906A (en) Telephone instrument
JP2573234B2 (ja) 音声会議装置
US2332551A (en) Telephone set circuit
KR930010838B1 (ko) 통신기기의 마이크 송신레벨 자동제어장치
JP3018623B2 (ja) 電話装置
KR940003030B1 (ko) Mfc신호 입력으로 인한 오동작 방지회로 및 mfc신호 녹음 방지회로
JPH0556132A (ja) 拡声電話装置回路
JPH0560293B2 (fi)