SE430367B - Telefonadapter for telefonering under vilken en anvendares hender er fria - Google Patents

Telefonadapter for telefonering under vilken en anvendares hender er fria

Info

Publication number
SE430367B
SE430367B SE7806809A SE7806809A SE430367B SE 430367 B SE430367 B SE 430367B SE 7806809 A SE7806809 A SE 7806809A SE 7806809 A SE7806809 A SE 7806809A SE 430367 B SE430367 B SE 430367B
Authority
SE
Sweden
Prior art keywords
amplifier
telephone
inputs
signal path
adapter according
Prior art date
Application number
SE7806809A
Other languages
English (en)
Swedish (sv)
Other versions
SE7806809L (sv
Inventor
A N Spanel
L F Shepard
Original Assignee
Spanel Abram Nathaniel
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 Spanel Abram Nathaniel filed Critical Spanel Abram Nathaniel
Publication of SE7806809L publication Critical patent/SE7806809L/xx
Publication of SE430367B publication Critical patent/SE430367B/sv

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
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Telephone Function (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
SE7806809A 1977-06-16 1978-06-13 Telefonadapter for telefonering under vilken en anvendares hender er fria SE430367B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/807,104 US4115659A (en) 1977-06-16 1977-06-16 Electroacoustical telephone adapter

Publications (2)

Publication Number Publication Date
SE7806809L SE7806809L (sv) 1978-12-17
SE430367B true SE430367B (sv) 1983-11-07

Family

ID=25195585

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7806809A SE430367B (sv) 1977-06-16 1978-06-13 Telefonadapter for telefonering under vilken en anvendares hender er fria

Country Status (21)

Country Link
US (1) US4115659A (fr)
JP (1) JPS605101B2 (fr)
AR (1) AR215716A1 (fr)
AU (1) AU517959B2 (fr)
BE (1) BE868153A (fr)
BR (1) BR7803853A (fr)
CA (1) CA1105630A (fr)
CH (1) CH633925A5 (fr)
DE (1) DE2826345C2 (fr)
DK (1) DK266778A (fr)
ES (1) ES470867A1 (fr)
FI (1) FI781923A7 (fr)
FR (1) FR2394943A1 (fr)
GB (1) GB2000665B (fr)
MX (1) MX144953A (fr)
NL (1) NL7806549A (fr)
NO (1) NO150300C (fr)
NZ (1) NZ187578A (fr)
PT (1) PT68175A (fr)
SE (1) SE430367B (fr)
SG (1) SG45782G (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD261761S (en) 1979-02-22 1981-11-10 Systems Consultants, Inc. Data terminal/acoustic coupler
DE3009404A1 (de) * 1980-03-12 1981-09-17 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zum einstellen eines bewegbaren elektroakutischen schallwandlers
EP0050899A1 (fr) * 1980-10-27 1982-05-05 CISE- Centro Informazioni Studi Esperienze S.p.A. Dispositif pour la transmission et la réception de signaux sur une ligne téléphonique
CA1181541A (fr) * 1982-05-21 1985-01-22 Mitel Corporation Telephone haut-parleur
US4493950A (en) * 1982-12-17 1985-01-15 Lott Thomas M Loudspeaker telephone
US4497980A (en) * 1983-06-16 1985-02-05 Itt Corporation Handsfree circuit for telephone instrument
EP0313562B1 (fr) * 1986-06-30 1993-04-21 FORBES, Anthony Dispositif de mise en attente telephonique
DE3843033A1 (de) * 1988-12-21 1990-06-28 Messerschmitt Boelkow Blohm Mikrofon hoher empfindlichkeit
US5491695A (en) * 1991-07-17 1996-02-13 Digital Access Corporation Means and method of dial up bridging of network for high bandwidth digital communication
US5701347A (en) * 1994-06-23 1997-12-23 Compaq Computer Corporation Audio system for a personal computer
US5633943A (en) * 1994-09-09 1997-05-27 Compaq Computer Corporation Audio system for a personal computer
US6501836B1 (en) 1994-09-09 2002-12-31 Compaq Computer Corporation Audio system for a personal computer
US5828730A (en) * 1995-01-19 1998-10-27 Sten-Tel, Inc. Method and apparatus for recording and managing communications for transcription
GB0024350D0 (en) * 2000-10-05 2000-11-22 Mitel Corp Use of handset microphone to enhance speakerphone loudspeaker performance
GB0315426D0 (en) * 2003-07-01 2003-08-06 Mitel Networks Corp Microphone array with physical beamforming using omnidirectional microphones

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580439A (en) * 1949-09-07 1952-01-01 Bell Telephone Labor Inc Directional acoustic system
US2987575A (en) * 1955-11-10 1961-06-06 Norman L Chalfin Two way telephone handset amplifying system
US3189690A (en) * 1960-04-27 1965-06-15 Modern Telephones Great Britai Two-way telephone systems with talk-listen switching
US3725585A (en) * 1972-03-21 1973-04-03 Itt Loudspeaking telephone station circuit
DE2247097C3 (de) * 1972-09-26 1979-01-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Sprachgesteuerte Lautfernsprechanlage
DE2260401A1 (de) * 1972-12-09 1974-06-12 Zielinski Adolf Herbert Telefonadapter
US3887771A (en) * 1974-03-04 1975-06-03 Spanel Abram Nathaniel Telephone adapter
US4079196A (en) * 1976-03-16 1978-03-14 Abram Nathaniel Spanel Telephone control apparatus

Also Published As

Publication number Publication date
GB2000665A (en) 1979-01-10
NO150300C (no) 1984-09-19
NL7806549A (nl) 1978-12-19
CA1105630A (fr) 1981-07-21
ES470867A1 (es) 1979-02-01
SG45782G (en) 1983-07-08
FI781923A7 (fi) 1978-12-17
BE868153A (fr) 1978-12-15
BR7803853A (pt) 1979-04-10
DK266778A (da) 1978-12-17
PT68175A (en) 1978-07-01
DE2826345A1 (de) 1979-01-04
SE7806809L (sv) 1978-12-17
FR2394943A1 (fr) 1979-01-12
AU3712078A (en) 1979-05-03
CH633925A5 (fr) 1982-12-31
US4115659A (en) 1978-09-19
AU517959B2 (en) 1981-09-03
JPS605101B2 (ja) 1985-02-08
NZ187578A (en) 1981-10-19
NO782065L (no) 1978-12-19
JPS5417605A (en) 1979-02-09
GB2000665B (en) 1982-04-21
NO150300B (no) 1984-06-12
AR215716A1 (es) 1979-10-31
MX144953A (es) 1981-12-04
DE2826345C2 (de) 1984-05-17

Similar Documents

Publication Publication Date Title
US9237401B2 (en) Electronic devices with adjustable bias impedances and adjustable bias voltages for accessories
CA1105630A (fr) Adaptateur electroacoustique telephonique sur combine raccrochabl sans coupure
SE466427B (sv) Handfrigoeringsmodul foer en mobiltelefon
US12348926B2 (en) Multi-microphone headset
US4005269A (en) Apparatus for interfacing between telephone and wireless communication systems
US20030118201A1 (en) Method and system for using an audio transducer as both an input and output device in full duplex operation
JPH077996B2 (ja) 電話機分離検出回路
US4081620A (en) Sidetone control circuit for a telephone set
CN203951519U (zh) 一种移动通信终端
US5495527A (en) Telephone privacy device
US3887771A (en) Telephone adapter
US5206898A (en) Transmission control unit
JPH05276587A (ja) イヤーマイクロフォン
CN207070268U (zh) 耳机
US3833766A (en) Voiced controlled gain switched loud-speaking telephone system
US3763326A (en) Telephone audio signalling arrangement
KR830001580B1 (ko) 확성전화기의 음성용 트랜스레스 2선식 동시통화장치
KR910001082Y1 (ko) 스피커폰의 잡음 제거회로
JPS561649A (en) Conference telephone equipment
GB2261576A (en) Telephone operable in a hands-free mode
US250704A (en) Speaking telephone
JP2731174B2 (ja) 電話装置
KR100853860B1 (ko) 분리형 음향 입/출력 장치
KR200218614Y1 (ko) 오디오 입출력장치
KR920006135B1 (ko) 전이중 방식 핸드프리장치