[go: up one dir, main page]

DE69228807D1 - Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat - Google Patents

Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat

Info

Publication number
DE69228807D1
DE69228807D1 DE69228807T DE69228807T DE69228807D1 DE 69228807 D1 DE69228807 D1 DE 69228807D1 DE 69228807 T DE69228807 T DE 69228807T DE 69228807 T DE69228807 T DE 69228807T DE 69228807 D1 DE69228807 D1 DE 69228807D1
Authority
DE
Germany
Prior art keywords
circuit
impedance
telephone set
speech
speech circuit
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
DE69228807T
Other languages
English (en)
Other versions
DE69228807T2 (de
Inventor
Luciano Tomasini
Rinaldo Castello
Pietro Erratico
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 SRL
Original Assignee
STMicroelectronics SRL
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 STMicroelectronics SRL filed Critical STMicroelectronics SRL
Application granted granted Critical
Publication of DE69228807D1 publication Critical patent/DE69228807D1/de
Publication of DE69228807T2 publication Critical patent/DE69228807T2/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
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
DE69228807T 1992-07-22 1992-07-22 Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat Expired - Fee Related DE69228807T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92830401A EP0579891B1 (de) 1992-07-22 1992-07-22 Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat

Publications (2)

Publication Number Publication Date
DE69228807D1 true DE69228807D1 (de) 1999-05-06
DE69228807T2 DE69228807T2 (de) 1999-08-12

Family

ID=8212143

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69228807T Expired - Fee Related DE69228807T2 (de) 1992-07-22 1992-07-22 Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat

Country Status (4)

Country Link
US (1) US5459787A (de)
EP (1) EP0579891B1 (de)
JP (1) JP3659982B2 (de)
DE (1) DE69228807T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581372A2 (de) * 1992-07-31 1994-02-02 Koninklijke Philips Electronics N.V. Endstelle zur drahtgebundenen Telekommunikation
EP0581373A2 (de) * 1992-07-31 1994-02-02 Koninklijke Philips Electronics N.V. Endstelle für drahtgebundene Fernübertragung
US5598467A (en) * 1994-12-09 1997-01-28 National Semiconductor Corporation Signal interface circuit with selectable signal interface parameters
EP0739120B1 (de) * 1995-04-11 2001-06-06 STMicroelectronics S.r.l. Sprechschaltung für eine Fernsprechstelle
US7020274B1 (en) 2000-04-26 2006-03-28 Agilent Technologies, Inc. Universal apparatus and method for interfacing signals with telephony networks
US7130412B2 (en) 2001-11-29 2006-10-31 Adtran, Inc. Telecommunication line driver having synthesized output impedance derived from output current sensing circuit
ATE356440T1 (de) 2002-05-17 2007-03-15 Jason E Schripsema Photovoltaisches modul mit einstellbarem kühlkörper und herstellungsverfahren

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895488A (ja) * 1981-12-02 1983-06-07 Hitachi Ltd ライン回路
US4567331A (en) * 1983-12-22 1986-01-28 Itt Corporation Electronic hybrid having synthesized impedance circuitry
EP0434950A3 (en) * 1989-12-23 1992-07-22 Standard Elektrik Lorenz Aktiengesellschaft Simulation of a complex impedance and interface for same

Also Published As

Publication number Publication date
DE69228807T2 (de) 1999-08-12
US5459787A (en) 1995-10-17
EP0579891B1 (de) 1999-03-31
JP3659982B2 (ja) 2005-06-15
JPH06244930A (ja) 1994-09-02
EP0579891A1 (de) 1994-01-26

Similar Documents

Publication Publication Date Title
US5195132B1 (en) Telephone network speech signal enhancement
DE69132644D1 (de) Vorrichtung zur Sprachsignalverarbeitung für die Bestimmung eines Sprachsignals
DE69306425D1 (de) Bausatz für die Reparatur eines Nachrichtenkabels
DE69307741D1 (de) Steckverbinder für die Kante einer gedruckten Schaltung
DE69518452D1 (de) Verfahren für die Transformationskodierung akustischer Signale
DE69127961D1 (de) Verfahren zur Spracherkennung
DE69532186D1 (de) Verfahren zur Fernsprechtonverbesserung durch Teilnehmerwahl
DE69327188D1 (de) Einrichtung für automatische Spracherkennung
DE69434568D1 (de) Mikrofonsystem für telekonferenzsystem
DE69323383D1 (de) Verfahren zur Herstellung eines elektronischen Bauelementes
DE69321656D1 (de) Verfahren zur Spracherkennung
DE69735908D1 (de) Sprachdetektor für die E-Seite eines Echokompensators
ATE119724T1 (de) Verfahren zur beendigung eines telefonanrufs durch sprachsteuerung.
IT1150308B (it) Perfezionamenti per apparecchi telefonici muniti di trasduttori ausiliari per consentire le conversazioni a viva voce
DE69520779D1 (de) Verfahren zur Herstellung von einer aktiven metallenthaltenden Kupferlegierung
DE69302112D1 (de) Steckdose für die Fernmeldetechnik
DE59209469D1 (de) Schaltungsanordnung zur Spracherkennung
DE69615443D1 (de) Bauelement für den vollständigen Schutz einer Schnittstellenschaltung von Teilnehmerleitungen
DE69228552D1 (de) Schaltung zur Detektion eines Parallelfernsprechgerät
DE69228807D1 (de) Schaltung zur Ausführung einer Impedanz für die Sprechschaltung eines Fernsprechapparat
DE69419223D1 (de) Vorrichtung zur Sprachverbesserung
DE69118308D1 (de) Verfahren zur Herstellung einer elektrischen Verbindung für eine integrierte Schaltung
DE69426026D1 (de) Verfahren zur herstellung einer leitenden schaltung auf der oberfläche eines formkörpers
DE69419188D1 (de) Schaltung zur Rauschverminderung für das Mikrofon eines Funkgerätes
DE69319954D1 (de) Verfahren zur Herstellung einer vorsensibilisierten Platte

Legal Events

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