ATE16228T1 - Digitaler frequenzempfaenger. - Google Patents

Digitaler frequenzempfaenger.

Info

Publication number
ATE16228T1
ATE16228T1 AT81401024T AT81401024T ATE16228T1 AT E16228 T1 ATE16228 T1 AT E16228T1 AT 81401024 T AT81401024 T AT 81401024T AT 81401024 T AT81401024 T AT 81401024T AT E16228 T1 ATE16228 T1 AT E16228T1
Authority
AT
Austria
Prior art keywords
signals
code
pct
digital
receiver
Prior art date
Application number
AT81401024T
Other languages
English (en)
Inventor
Philippe Delpit
Philippe Duplessis
Yves Renaudin
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of ATE16228T1 publication Critical patent/ATE16228T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AT81401024T 1980-06-25 1981-06-25 Digitaler frequenzempfaenger. ATE16228T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8014090A FR2485843B1 (fr) 1980-06-25 1980-06-25 Recepteur numerique de frequences
EP81401024A EP0043320B1 (de) 1980-06-25 1981-06-25 Digitaler Frequenzempfänger

Publications (1)

Publication Number Publication Date
ATE16228T1 true ATE16228T1 (de) 1985-11-15

Family

ID=9243494

Family Applications (1)

Application Number Title Priority Date Filing Date
AT81401024T ATE16228T1 (de) 1980-06-25 1981-06-25 Digitaler frequenzempfaenger.

Country Status (5)

Country Link
US (1) US4510601A (de)
EP (1) EP0043320B1 (de)
AT (1) ATE16228T1 (de)
DE (1) DE3172701D1 (de)
FR (1) FR2485843B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370650A (en) * 1981-04-01 1983-01-25 Minnesota Mining And Manufacturing Company Tone detection circuitry
FR2513470B1 (fr) * 1981-09-18 1986-02-21 Cit Alcatel Groupe d'unites de terminaux pour autocommutateur numerique
JPS62204652A (ja) * 1986-03-04 1987-09-09 Nec Corp 可聴周波信号識別方式
WO1990000841A1 (en) * 1988-07-15 1990-01-25 Luminis Pty. Ltd. Access protection and priority control in distributed queueing
EP0440028A3 (en) * 1990-01-29 1992-07-22 Dialogic Corporation Multifrequency tone signal detector
US5262957A (en) * 1990-11-09 1993-11-16 Global Communications, Inc. Inexpensive portable RF spectrum analyzer with calibration features
US5416836A (en) * 1993-12-17 1995-05-16 At&T Corp. Disconnect signalling detection arrangement
US5930308A (en) * 1996-02-01 1999-07-27 Airnet Communications Corp. Method and apparatus for detecting signaling tones in wide-band digitized cellular-telephone signals
US7293525B2 (en) * 2003-08-29 2007-11-13 Hdn Development Corporation Method and apparatus for applying glaze or other coatings to food products

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1603175A (de) * 1968-07-30 1971-03-22
DE2341225B2 (de) * 1973-08-16 1976-10-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen
FR2269261B1 (de) * 1974-04-24 1976-12-17 Cit Alcatel
JPS5731716B2 (de) * 1974-12-23 1982-07-06
US3937899A (en) * 1975-01-30 1976-02-10 Bell Telephone Laboratories, Incorporated Tone detector using spectrum parameter estimation
FR2299769A1 (fr) * 1975-01-31 1976-08-27 Telecommunications Sa Procede d'application
NL7511707A (nl) * 1975-10-06 1977-04-12 Philips Nv Kruiscorrelatie-inrichting.
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica
FR2409652A1 (fr) * 1977-11-18 1979-06-15 Materiel Telephonique Recepteur de signaux numeriques multifrequences codes
NL177169B (nl) * 1978-09-08 1985-03-01 Nederlanden Staat Inrichting om de aanwezigheid vast te stellen van een of meer van een aantal frequenties in pulscode-gemoduleerde signalen.
JPS589626B2 (ja) * 1978-10-06 1983-02-22 日本電信電話株式会社 デジタル信号受信器
US4203008A (en) * 1979-02-26 1980-05-13 Northern Telecom Limited Digital signalling receiver for receiving PCM tones
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver

Also Published As

Publication number Publication date
FR2485843A1 (fr) 1981-12-31
EP0043320A1 (de) 1982-01-06
DE3172701D1 (en) 1985-11-28
FR2485843B1 (fr) 1986-11-07
US4510601A (en) 1985-04-09
EP0043320B1 (de) 1985-10-23

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee