FR2517499A1 - Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique - Google Patents

Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique Download PDF

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Publication number
FR2517499A1
FR2517499A1 FR8122241A FR8122241A FR2517499A1 FR 2517499 A1 FR2517499 A1 FR 2517499A1 FR 8122241 A FR8122241 A FR 8122241A FR 8122241 A FR8122241 A FR 8122241A FR 2517499 A1 FR2517499 A1 FR 2517499A1
Authority
FR
France
Prior art keywords
signal
signaling
output
threshold
level
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.)
Granted
Application number
FR8122241A
Other languages
English (en)
French (fr)
Other versions
FR2517499B1 (enExample
Inventor
Guy De Bergh
Jean-Claude Spiteri
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.)
Nokia Inc
Original Assignee
Nokia Inc
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 Nokia Inc filed Critical Nokia Inc
Priority to FR8122241A priority Critical patent/FR2517499A1/fr
Priority to US06/408,305 priority patent/US4469916A/en
Priority to CA000409949A priority patent/CA1177587A/fr
Priority to EP82110801A priority patent/EP0080688B1/fr
Priority to DE8282110801T priority patent/DE3269709D1/de
Priority to JP57207437A priority patent/JPS5899060A/ja
Priority to IE2823/82A priority patent/IE54876B1/en
Publication of FR2517499A1 publication Critical patent/FR2517499A1/fr
Application granted granted Critical
Publication of FR2517499B1 publication Critical patent/FR2517499B1/fr
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/20Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
FR8122241A 1981-11-27 1981-11-27 Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique Granted FR2517499A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR8122241A FR2517499A1 (fr) 1981-11-27 1981-11-27 Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique
US06/408,305 US4469916A (en) 1981-11-27 1982-08-16 Method and apparatus for detecting signalling and data signals on a telephone channel
CA000409949A CA1177587A (fr) 1981-11-27 1982-08-23 Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique
EP82110801A EP0080688B1 (fr) 1981-11-27 1982-11-23 Procédé et dispositif de détection sur une voie téléphonique de signaux de données ou de signalisation
DE8282110801T DE3269709D1 (en) 1981-11-27 1982-11-23 Method and device for the detection of data or of signalling on a telephonic path
JP57207437A JPS5899060A (ja) 1981-11-27 1982-11-26 電話チヤネルのデ−タ信号及び指定信号の検出方法及び装置
IE2823/82A IE54876B1 (en) 1981-11-27 1982-11-26 Method and apparatus for detecting signalling and data signals on a telephone channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8122241A FR2517499A1 (fr) 1981-11-27 1981-11-27 Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique

Publications (2)

Publication Number Publication Date
FR2517499A1 true FR2517499A1 (fr) 1983-06-03
FR2517499B1 FR2517499B1 (enExample) 1984-01-27

Family

ID=9264432

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8122241A Granted FR2517499A1 (fr) 1981-11-27 1981-11-27 Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique

Country Status (7)

Country Link
US (1) US4469916A (enExample)
EP (1) EP0080688B1 (enExample)
JP (1) JPS5899060A (enExample)
CA (1) CA1177587A (enExample)
DE (1) DE3269709D1 (enExample)
FR (1) FR2517499A1 (enExample)
IE (1) IE54876B1 (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121856A (ja) * 1983-12-06 1985-06-29 Nec Corp 単一周波数信号検出回路
US4571463A (en) * 1984-06-01 1986-02-18 Code-A-Phone Corporation Method and system for automatically inserting at least one pause into means for memorizing a dialing sequence
US4885755A (en) * 1985-04-10 1989-12-05 Canon Kabushiki Kaisha Method and apparatus for data communication
US4696031A (en) * 1985-12-31 1987-09-22 Wang Laboratories, Inc. Signal detection and discrimination using waveform peak factor
NO165369C (no) * 1988-05-02 1991-01-30 Informasjonskontroll A S Fremgangsmaate og mottaker for signaldeteksjon.
WO1994000944A1 (en) * 1992-06-30 1994-01-06 Polycom, Inc. Method and apparatus for ringer detection
JPH07123236B2 (ja) * 1992-12-18 1995-12-25 日本電気株式会社 双方向通話状態検出回路
US5631958A (en) * 1994-10-04 1997-05-20 Coherent Communications Systems Corp. Automatic echo cancellation for an integrated services digital network interface
US5764753A (en) * 1995-09-29 1998-06-09 Crystal Semiconductor Corp. Half-duplex controller
US7269288B2 (en) * 2003-07-30 2007-09-11 Mediatek Inc. Apparatus for parallel calculation of prediction bits in a spatially predicted coded block pattern and method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240583A1 (enExample) * 1973-08-08 1975-03-07 Cit Alcatel
GB2031696A (en) * 1978-09-26 1980-04-23 Feller Ag Electronic speech detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069501A (en) * 1958-08-20 1962-12-18 Bell Telephone Labor Inc Transmission control in two-way signaling systems
US3647993A (en) * 1970-05-18 1972-03-07 Wescom Tone disabler
US3859462A (en) * 1973-08-15 1975-01-07 Itt Arrangement to control a function at a remote location
JPS5622194B2 (enExample) * 1973-12-20 1981-05-23
US3979559A (en) * 1974-01-31 1976-09-07 Milgo Electronics Corporation Data modem having line verification and automatic disconnect features
US4352962A (en) * 1980-06-27 1982-10-05 Reliance Electric Company Tone responsive disabling circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240583A1 (enExample) * 1973-08-08 1975-03-07 Cit Alcatel
GB2031696A (en) * 1978-09-26 1980-04-23 Feller Ag Electronic speech detector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/78 *

Also Published As

Publication number Publication date
EP0080688B1 (fr) 1986-03-05
US4469916A (en) 1984-09-04
FR2517499B1 (enExample) 1984-01-27
IE54876B1 (en) 1990-03-14
DE3269709D1 (en) 1986-04-10
CA1177587A (fr) 1984-11-06
EP0080688A1 (fr) 1983-06-08
JPS5899060A (ja) 1983-06-13
IE822823L (en) 1983-05-27

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