BE833155A - Convertisseur de signal pour recepteur de signal multifrequence - Google Patents

Convertisseur de signal pour recepteur de signal multifrequence

Info

Publication number
BE833155A
BE833155A BE159811A BE159811A BE833155A BE 833155 A BE833155 A BE 833155A BE 159811 A BE159811 A BE 159811A BE 159811 A BE159811 A BE 159811A BE 833155 A BE833155 A BE 833155A
Authority
BE
Belgium
Prior art keywords
frequency signal
converter
signal
signal receiver
receiver
Prior art date
Application number
BE159811A
Other languages
English (en)
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 filed Critical
Publication of BE833155A publication Critical patent/BE833155A/fr

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
    • 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)
  • Electronic Switches (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)
BE159811A 1974-09-12 1975-09-08 Convertisseur de signal pour recepteur de signal multifrequence BE833155A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/505,204 US3936801A (en) 1974-09-12 1974-09-12 Multifrequency signal receiver timing circuit

Publications (1)

Publication Number Publication Date
BE833155A true BE833155A (fr) 1975-12-31

Family

ID=24009425

Family Applications (1)

Application Number Title Priority Date Filing Date
BE159811A BE833155A (fr) 1974-09-12 1975-09-08 Convertisseur de signal pour recepteur de signal multifrequence

Country Status (11)

Country Link
US (1) US3936801A (fr)
JP (1) JPS5535037B2 (fr)
BE (1) BE833155A (fr)
CA (1) CA1035879A (fr)
CH (1) CH600684A5 (fr)
DE (1) DE2539804C3 (fr)
FR (1) FR2285038A1 (fr)
GB (1) GB1520887A (fr)
IT (1) IT1047999B (fr)
NL (1) NL177877C (fr)
SE (1) SE7509780L (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023105A (en) * 1975-08-25 1977-05-10 Rca Corporation Counter type remote control receiver producing binary outputs correlated with numerical commands of a companion remote control transmitter
CA1031086A (fr) * 1976-03-03 1978-05-09 Northern Electric Company Mode et appareil de traduction de signaux sur plusieurs frequences
US4076962A (en) * 1977-03-07 1978-02-28 Bell Telephone Laboratories, Incorporated Method and apparatus for receiving disparate sequences of spaced tone bursts
US4091243A (en) * 1977-07-26 1978-05-23 Bell Telephone Laboratories, Incorporated Multifrequency signal receiver
CA1137565A (fr) * 1979-05-22 1982-12-14 Masaharu Kawaguchi Recepteur multifrequence numerique
US4385398A (en) * 1979-06-07 1983-05-24 Keith H. Wycoff Selective call communication receiver
CA1290083C (fr) * 1987-06-10 1991-10-01 Grass Valley Group, Inc. (The) Detecteur analogique de signaux de numerotation
US6473826B1 (en) * 1999-04-20 2002-10-29 Adaptec, Inc. PCI delayed transaction time out counter and associated methods
US6751303B1 (en) * 2002-06-28 2004-06-15 Sprint Communications Company L.P. Data communication over telephone voice channel using DTMF interface

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1138436B (de) * 1960-08-22 1962-10-25 Western Electric Co Signalempfaenger fuer Fernmelde-, insbesondere Fernsprechanlagen
US3281790A (en) * 1963-04-01 1966-10-25 Bell Telephone Labor Inc Multifrequency signaling receiver circuit
FR1339209A (fr) * 1963-04-06 1963-10-04 Int Standard Electric Corp Récepteur à fréquences vocales
US3288940A (en) * 1963-10-24 1966-11-29 Automatic Elect Lab Multifrequency signal receiver
US3718918A (en) * 1969-12-01 1973-02-27 Atomic Energy Authority Uk Nuclear explosion detection systems
FR2127450A5 (fr) * 1971-03-03 1972-10-13 Ibm France
BR7101977D0 (pt) * 1971-04-05 1973-06-14 Ibm Processos e disposicoes de circuito para decodificacao digital de sinais de frequencia codificada
DE2156123C2 (de) * 1971-11-11 1978-11-30 Siemens Ag, 1000 Berlin U. 8000 Muenchen Frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen
FR2207626A6 (fr) * 1972-10-25 1974-06-14 Ibm France
US3818358A (en) * 1972-12-29 1974-06-18 Stromberg Carlson Corp Noise rejection circuit for digital systems
DE2334426A1 (de) * 1973-07-06 1975-01-23 Telefonbau & Normalzeit Gmbh Auswerter fuer sprachgeschuetzte frequenzselektive zeichenempfaenger nach dem mehrfrequenzverfahren

Also Published As

Publication number Publication date
GB1520887A (en) 1978-08-09
IT1047999B (it) 1980-10-20
US3936801A (en) 1976-02-03
CA1035879A (fr) 1978-08-01
JPS5535037B2 (fr) 1980-09-11
DE2539804C3 (de) 1983-02-10
NL7510708A (nl) 1976-03-16
FR2285038A1 (fr) 1976-04-09
SE7509780L (sv) 1976-03-15
DE2539804B2 (de) 1979-09-13
DE2539804A1 (de) 1976-04-01
FR2285038B1 (fr) 1980-05-16
NL177877C (nl) 1985-12-02
JPS5154707A (fr) 1976-05-14
CH600684A5 (fr) 1978-06-30

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WESTERN ELECTRIC CY INC.

Effective date: 19930930