JPS53121408A - Method of and device for recognizing multiifrequency coded telephone signal converted to digital format - Google Patents

Method of and device for recognizing multiifrequency coded telephone signal converted to digital format

Info

Publication number
JPS53121408A
JPS53121408A JP14409877A JP14409877A JPS53121408A JP S53121408 A JPS53121408 A JP S53121408A JP 14409877 A JP14409877 A JP 14409877A JP 14409877 A JP14409877 A JP 14409877A JP S53121408 A JPS53121408 A JP S53121408A
Authority
JP
Japan
Prior art keywords
multiifrequency
recognizing
signal converted
digital format
telephone signal
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
JP14409877A
Other languages
Japanese (ja)
Other versions
JPS5731342B2 (en
Inventor
Merindo Furabuio
Rotsushi Renato
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.)
Telecom Italia SpA
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni SpA
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 CSELT Centro Studi e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Publication of JPS53121408A publication Critical patent/JPS53121408A/en
Publication of JPS5731342B2 publication Critical patent/JPS5731342B2/ja
Granted legal-status Critical Current

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
JP14409877A 1976-12-17 1977-12-02 Method of and device for recognizing multiifrequency coded telephone signal converted to digital format Granted JPS53121408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7000776A IT1072242B (en) 1976-12-17 1976-12-17 PROCEDURE AND DEVICE FOR THE RECOGNITION OF TELEPHONE SIGNALS IN MULTIFREQUENCY CODE CONVERTED IN NUMERICAL FORM

Publications (2)

Publication Number Publication Date
JPS53121408A true JPS53121408A (en) 1978-10-23
JPS5731342B2 JPS5731342B2 (en) 1982-07-03

Family

ID=11313285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14409877A Granted JPS53121408A (en) 1976-12-17 1977-12-02 Method of and device for recognizing multiifrequency coded telephone signal converted to digital format

Country Status (11)

Country Link
JP (1) JPS53121408A (en)
AR (1) AR216659A1 (en)
AU (1) AU507727B2 (en)
BR (1) BR7707827A (en)
DE (1) DE2756251C3 (en)
FR (1) FR2374808A1 (en)
GB (1) GB1566164A (en)
IT (1) IT1072242B (en)
MX (1) MX144395A (en)
SE (1) SE437102B (en)
TR (1) TR19857A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6043023B1 (en) * 2013-09-20 2016-12-14 プロテウス デジタル ヘルス， インコーポレイテッド Method, device and system for receiving and decoding signals in the presence of noise using slicing and warping

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440126A1 (en) * 1978-10-27 1980-05-23 Materiel Telephonique RECOGNITION DEVICE AND METHOD FOR A DIGITAL MULTI-FREQUENCY SIGNAL RECEIVER
US4227055A (en) * 1978-12-07 1980-10-07 Bell Telephone Laboratories, Incorporated Multifrequency receiver
CA1111531A (en) * 1979-02-22 1981-10-27 Jackylene K. Hood Digital signalling receiver for receiving pcm tones
NL7903346A (en) * 1979-04-27 1980-10-29 Bell Telephone Mfg DIGITAL SIGNALING SYSTEM.
FR2479631B1 (en) * 1980-03-28 1986-07-25 Cit Alcatel SIGNAL CONFIRMATION DEVICE
FR2485843B1 (en) * 1980-06-25 1986-11-07 Cit Alcatel DIGITAL FREQUENCY RECEIVER
IT1148885B (en) * 1980-07-09 1986-12-03 Sits Soc It Telecom Siemens MULTIFREQUENCY TYPE SIGNALING CONTROL UNIT, OF PARTICULAR APPLICATION IN TELEPHONE UNITS FOR NUMERIC TYPES OF TRANSIT
US4385208A (en) * 1981-04-15 1983-05-24 Bell Telephone Laboratories, Incorporated Multifrequency receiver
DE3424327A1 (en) * 1984-07-02 1986-01-09 Philips Patentverwaltung Gmbh, 2000 Hamburg Method and circuit arrangement for identifying the envelope curves of signal components of a multi-frequency coded dial signal
CH672968A5 (en) * 1984-11-30 1990-01-15 Autophon Ascom Ag
JPS61225929A (en) * 1985-03-30 1986-10-07 Fujitsu Ltd Method for generating digital tone
US4783845A (en) * 1985-12-20 1988-11-08 Itt Aerospace Optical Digital tone squelch detector
JPS62204652A (en) * 1986-03-04 1987-09-09 Nec Corp Audible frequency signal identification system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773981A (en) * 1972-08-07 1973-11-20 Ibm Parallel tone multiplexer-receiver
CA984068A (en) * 1972-08-10 1976-02-17 Alexander D. Proudfoot Method and apparatus for detecting the presence of signal components of predetermined frequency in a multi-frequency signal
NL7316990A (en) * 1973-12-12 1975-06-16 Philips Nv MFC RECEIVER FOR DIGITAL SIGNAL PROCESSING.
FR2295665A1 (en) * 1974-12-18 1976-07-16 Labo Cent Telecommunicat MULTI-FREQUENCY DIGITAL SIGNAL RECEIVER
DE2515769A1 (en) * 1975-04-10 1976-10-21 Standard Elektrik Lorenz Ag FREQUENCY SELECTIVE SIGNAL RECEIVER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6043023B1 (en) * 2013-09-20 2016-12-14 プロテウス デジタル ヘルス， インコーポレイテッド Method, device and system for receiving and decoding signals in the presence of noise using slicing and warping
JP2017085577A (en) * 2013-09-20 2017-05-18 プロテウス デジタル ヘルス， インコーポレイテッド Methods, devices and systems for receiving and decoding signal in presence of noise using slices and warping

Also Published As

Publication number Publication date
MX144395A (en) 1981-10-07
BR7707827A (en) 1978-08-22
AU3132077A (en) 1979-06-14
FR2374808A1 (en) 1978-07-13
DE2756251A1 (en) 1978-06-22
AR216659A1 (en) 1980-01-15
FR2374808B1 (en) 1982-03-19
TR19857A (en) 1980-03-01
JPS5731342B2 (en) 1982-07-03
AU507727B2 (en) 1980-02-28
SE7714181L (en) 1978-06-18
IT1072242B (en) 1985-04-10
DE2756251C3 (en) 1981-11-19
DE2756251B2 (en) 1981-03-26
SE437102B (en) 1985-02-04
GB1566164A (en) 1980-04-30

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