IT1153483B - Apparecchiatura per rivelare la presenza di segnali multifrequenziali in un segnale ricevuto - Google Patents

Apparecchiatura per rivelare la presenza di segnali multifrequenziali in un segnale ricevuto

Info

Publication number
IT1153483B
IT1153483B IT20713/82A IT2071382A IT1153483B IT 1153483 B IT1153483 B IT 1153483B IT 20713/82 A IT20713/82 A IT 20713/82A IT 2071382 A IT2071382 A IT 2071382A IT 1153483 B IT1153483 B IT 1153483B
Authority
IT
Italy
Prior art keywords
multifrequential
detect
signals
equipment
received signal
Prior art date
Application number
IT20713/82A
Other languages
English (en)
Other versions
IT8220713A0 (it
Inventor
Jimmy Tow
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of IT8220713A0 publication Critical patent/IT8220713A0/it
Application granted granted Critical
Publication of IT1153483B publication Critical patent/IT1153483B/it

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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Manipulation Of Pulses (AREA)
  • Circuits Of Receivers In General (AREA)
IT20713/82A 1981-04-15 1982-04-13 Apparecchiatura per rivelare la presenza di segnali multifrequenziali in un segnale ricevuto IT1153483B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/254,442 US4385208A (en) 1981-04-15 1981-04-15 Multifrequency receiver

Publications (2)

Publication Number Publication Date
IT8220713A0 IT8220713A0 (it) 1982-04-13
IT1153483B true IT1153483B (it) 1987-01-14

Family

ID=22964335

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20713/82A IT1153483B (it) 1981-04-15 1982-04-13 Apparecchiatura per rivelare la presenza di segnali multifrequenziali in un segnale ricevuto

Country Status (11)

Country Link
US (1) US4385208A (it)
JP (1) JPS581366A (it)
AU (2) AU552325B2 (it)
BE (1) BE892839A (it)
CA (1) CA1194939A (it)
DE (1) DE3213219A1 (it)
FR (1) FR2504329B1 (it)
GB (1) GB2096807B (it)
IT (1) IT1153483B (it)
NL (1) NL189942C (it)
SE (1) SE456130B (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385208A (en) * 1981-04-15 1983-05-24 Bell Telephone Laboratories, Incorporated Multifrequency receiver
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus
US4604755A (en) * 1984-06-01 1986-08-05 International Business Machines Corp. Feed forward dual channel automatic level control for dual tone multi-frequency receivers
DE3629907A1 (de) * 1986-09-03 1988-03-10 Standard Elektrik Lorenz Ag Signalisierungsempfaenger
US4970656A (en) * 1986-11-07 1990-11-13 Alcon Laboratories, Inc. Analog drive for ultrasonic probe with tunable phase angle
US4786168A (en) * 1986-11-24 1988-11-22 The United States Of America As Represented By The United States National Aeronautics And Space Administration Frequency domain laser velocimeter signal processor
US5001649A (en) * 1987-04-06 1991-03-19 Alcon Laboratories, Inc. Linear power control for ultrasonic probe with tuned reactance
US4984253A (en) * 1988-06-03 1991-01-08 Hughes Aircraft Company Apparatus and method for processing simultaneous radio frequency signals
JPH03132291A (ja) * 1989-10-18 1991-06-05 Fujitsu Ltd Ｐｂ信号検出方式
JPH07226779A (ja) * 1994-02-15 1995-08-22 Nec Eng Ltd 周波数検出回路
US6724834B2 (en) * 2002-02-22 2004-04-20 Albert L. Garrett Threshold detector for detecting synchronization signals at correlator output during packet acquisition
DE10350261B4 (de) * 2003-10-28 2006-04-20 Infineon Technologies Ag Verfahren und Vorrichtung zur Anpassung von Schwellwerten in elektronischen Signalverarbeitungseinrichtungen
US9627186B2 (en) * 2014-08-29 2017-04-18 Lam Research Corporation System, method and apparatus for using optical data to monitor RF generator operations

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517024C3 (de) * 1975-04-17 1978-03-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen Signalempfänger zum Sperren von Signalen, deren Pegel schwankt
SE397763B (sv) * 1976-03-09 1977-11-14 Ericsson Telefon Ab L M Mottagaranordning for storningskenslig detektering av atminstone tva tonfrekvenser i en inkommande tonsignal
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
JPS5391612A (en) * 1977-01-24 1978-08-11 Nec Corp Receiver for multiple frequency signal
US4121121A (en) * 1977-09-13 1978-10-17 Computer Identics Corporation Follower response control circuit
DE2741952B2 (de) * 1977-09-17 1980-06-19 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Pegelregelung
IT1108119B (it) * 1978-10-05 1985-12-02 Cselt Centro Studi Lab Telecom Procedimento e circuito di pilotaggio per dispositivo non lineari a soglia
US4227055A (en) * 1978-12-07 1980-10-07 Bell Telephone Laboratories, Incorporated Multifrequency receiver
US4385208A (en) * 1981-04-15 1983-05-24 Bell Telephone Laboratories, Incorporated Multifrequency receiver

Also Published As

Publication number Publication date
DE3213219A1 (de) 1982-11-11
JPS581366A (ja) 1983-01-06
GB2096807A (en) 1982-10-20
SE456130B (sv) 1988-09-05
FR2504329A1 (fr) 1982-10-22
NL8201569A (nl) 1982-11-01
AU5557786A (en) 1986-09-18
CA1194939A (en) 1985-10-08
NL189942B (nl) 1993-04-01
BE892839A (fr) 1982-08-02
DE3213219C2 (it) 1991-04-25
SE8202030L (sv) 1982-10-16
AU573081B2 (en) 1988-05-26
US4385208A (en) 1983-05-24
GB2096807B (en) 1985-01-16
IT8220713A0 (it) 1982-04-13
AU8234682A (en) 1982-10-21
FR2504329B1 (fr) 1986-04-04
NL189942C (nl) 1993-09-01
AU552325B2 (en) 1986-05-29

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960423