DE69313887T2 - Leistungsregler für einen Lautsprecher einer Telefoneinheit - Google Patents

Leistungsregler für einen Lautsprecher einer Telefoneinheit

Info

Publication number
DE69313887T2
DE69313887T2 DE69313887T DE69313887T DE69313887T2 DE 69313887 T2 DE69313887 T2 DE 69313887T2 DE 69313887 T DE69313887 T DE 69313887T DE 69313887 T DE69313887 T DE 69313887T DE 69313887 T2 DE69313887 T2 DE 69313887T2
Authority
DE
Germany
Prior art keywords
loudspeaker
power regulator
telephone unit
telephone
unit
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
DE69313887T
Other languages
English (en)
Other versions
DE69313887D1 (de
Inventor
Thierry Arnaud
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.)
STMicroelectronics SA
Original Assignee
SGS Thomson Microelectronics SA
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 SGS Thomson Microelectronics SA filed Critical SGS Thomson Microelectronics SA
Application granted granted Critical
Publication of DE69313887D1 publication Critical patent/DE69313887D1/de
Publication of DE69313887T2 publication Critical patent/DE69313887T2/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
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
DE69313887T 1992-01-29 1993-01-25 Leistungsregler für einen Lautsprecher einer Telefoneinheit Expired - Fee Related DE69313887T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9201243A FR2686759B1 (fr) 1992-01-29 1992-01-29 Dispositif de regulation de puissance pour un haut-parleur de poste de telephone pendant une sonnerie .

Publications (2)

Publication Number Publication Date
DE69313887D1 DE69313887D1 (de) 1997-10-23
DE69313887T2 true DE69313887T2 (de) 1998-02-12

Family

ID=9426321

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69313887T Expired - Fee Related DE69313887T2 (de) 1992-01-29 1993-01-25 Leistungsregler für einen Lautsprecher einer Telefoneinheit

Country Status (5)

Country Link
US (1) US5541543A (de)
EP (1) EP0554192B1 (de)
JP (1) JPH0685973A (de)
DE (1) DE69313887T2 (de)
FR (1) FR2686759B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743226B1 (fr) * 1995-12-27 1998-03-20 Sgs Thomson Microelectronics Dispositif adaptatif a l'impedance d'une ligne d'alimentation
US5721511A (en) * 1996-07-01 1998-02-24 Philips Electronics North America Corporation PWM variable voltage load driver
JP2000307482A (ja) * 1999-04-19 2000-11-02 Fujitsu Ltd 長距離伝送パルス送出装置
US6396317B1 (en) * 1999-05-28 2002-05-28 Peco Ii, Inc., Digital voltage controlled oscillator
US6873705B2 (en) * 2001-11-27 2005-03-29 Dialog Semiconductor Gmbh Combine audio and ringing mode
DE60225113T2 (de) 2002-04-16 2009-02-19 Dialog Semiconductor Gmbh Mischen von Audiosignalen
EP1355414A1 (de) * 2002-04-16 2003-10-22 Dialog Semiconductor GmbH Restwelligkeitsverminderung für einen Verstärker
FR2848359A1 (fr) * 2002-12-04 2004-06-11 St Microelectronics Sa Generateur d'impulsions modulees en largeur
IL166445A (en) * 2005-01-23 2011-07-31 Mosaid Technologies Inc A standard and method for evaluating the termination of a transmission line based on the determination of a typical impedance
US8222882B2 (en) 2009-01-30 2012-07-17 Power Integrations, Inc. Power supply controller with input voltage compensation for efficiency and maximum power output
KR20130115086A (ko) 2010-05-17 2013-10-21 세빅스 인코포레이티드 페길화된 c-펩티드
CN104254974B (zh) * 2012-03-20 2017-05-17 德克萨斯仪器股份有限公司 具有可调转角频率的pwm占空比合成器和方法
TWI662516B (zh) * 2018-02-09 2019-06-11 沅聖科技股份有限公司 鈴響控制裝置及其控制方法
US11005455B2 (en) 2019-04-04 2021-05-11 Silanna Asia Pte Ltd Generating voltage pulse with controllable width
RU2751899C1 (ru) * 2020-12-08 2021-07-19 Общество с ограниченной ответственностью "Техно Лит" Дымоход

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1079588B (it) * 1977-02-14 1985-05-13 Sits Soc It Telecom Siemens Generatore di chiamata statico per sistemi di telecomunicazioni
CA1114536A (en) * 1978-12-11 1981-12-15 William B. Kiss Ringing generator
DE3014468C2 (de) * 1980-04-15 1982-02-18 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Erzeugung eines akustischen Signals an Teilnehmerstellen in Fernsprech-, insbesondere Fernsprechnebenstellenanlagen
FR2525841B1 (fr) * 1982-04-21 1990-11-02 Motorola Inc Dispositif de traitement de signaux pour circuit de conversation telephonique
US4580064A (en) * 1982-06-03 1986-04-01 General Electric Company Method for generating pulse width modulated control signals
JPS5916470A (ja) * 1982-07-20 1984-01-27 Sony Corp パルス検出回路
US4489222A (en) * 1982-09-13 1984-12-18 The Board Of Trustees Of The Leland Stanford, Junior University Telephone line interface
DE3340808A1 (de) * 1983-11-11 1985-05-23 Blaupunkt-Werke Gmbh, 3200 Hildesheim Warntongeber fuer mobile verkehrsrundfunkempfaenger
US4605910A (en) * 1984-06-28 1986-08-12 Nautical Electronic Laboratories Limited AM pulse duration modulator
CH672382A5 (de) * 1986-02-24 1989-11-15 Saia Ag
DE3911498C2 (de) * 1989-04-08 1997-06-05 Hella Kg Hueck & Co Verfahren zur Erzeugung eines akustischen Signals mit veränderlicher Lautstärke und Einrichtung zur Durchführung des Verfahrens
US5045800A (en) * 1990-03-23 1991-09-03 Power Integrations, Inc. Pulse width modulator control circuit
NL9001856A (nl) * 1990-08-23 1992-03-16 Philips Nv Zaagtandgenerator en oscilloscoop voorzien van een dergelijke zaagtandgenerator.
US5220203A (en) * 1990-11-21 1993-06-15 Analogic Corporation Variable pulse width precision pulse generator
US5289359A (en) * 1991-02-13 1994-02-22 Charles Industries, Limited DC-DC power converter including sensing means for providing an output when the reserve power of the converter falls below a predetermined amount for a given input voltage
US5140630A (en) * 1991-05-01 1992-08-18 Light Logic, Ltd. Added main line apparatus
US5160896A (en) * 1992-02-18 1992-11-03 Harman International Industries, Incorporated Class D amplifier
US5420777A (en) * 1993-06-07 1995-05-30 Nec Corporation Switching type DC-DC converter having increasing conversion efficiency at light load

Also Published As

Publication number Publication date
US5541543A (en) 1996-07-30
EP0554192B1 (de) 1997-09-17
FR2686759B1 (fr) 1994-04-22
FR2686759A1 (fr) 1993-07-30
DE69313887D1 (de) 1997-10-23
JPH0685973A (ja) 1994-03-25
EP0554192A1 (de) 1993-08-04

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Legal Events

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