FR2333398A1 - Circuit pour recepteur de signaux multifrequences - Google Patents

Circuit pour recepteur de signaux multifrequences

Info

Publication number
FR2333398A1
FR2333398A1 FR7634661A FR7634661A FR2333398A1 FR 2333398 A1 FR2333398 A1 FR 2333398A1 FR 7634661 A FR7634661 A FR 7634661A FR 7634661 A FR7634661 A FR 7634661A FR 2333398 A1 FR2333398 A1 FR 2333398A1
Authority
FR
France
Prior art keywords
signal receiver
receiver circuit
multifrequency signal
multifrequency
circuit
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
FR7634661A
Other languages
English (en)
French (fr)
Other versions
FR2333398B1 (cg-RX-API-DMAC7.html
Inventor
Wolf Ohl
Herbert Ball
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2333398A1 publication Critical patent/FR2333398A1/fr
Application granted granted Critical
Publication of FR2333398B1 publication Critical patent/FR2333398B1/fr
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephone Function (AREA)
  • Electronic Switches (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR7634661A 1975-11-27 1976-11-17 Circuit pour recepteur de signaux multifrequences Granted FR2333398A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2553258A DE2553258C3 (de) 1975-11-27 1975-11-27 Schaltungsanordnung für einen digitalen Mehrfrequenz-Zeichenempfänger

Publications (2)

Publication Number Publication Date
FR2333398A1 true FR2333398A1 (fr) 1977-06-24
FR2333398B1 FR2333398B1 (cg-RX-API-DMAC7.html) 1982-10-22

Family

ID=5962770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634661A Granted FR2333398A1 (fr) 1975-11-27 1976-11-17 Circuit pour recepteur de signaux multifrequences

Country Status (8)

Country Link
BE (1) BE848776R (cg-RX-API-DMAC7.html)
CA (1) CA1078980A (cg-RX-API-DMAC7.html)
CH (1) CH601955A5 (cg-RX-API-DMAC7.html)
DE (1) DE2553258C3 (cg-RX-API-DMAC7.html)
ES (1) ES453636A1 (cg-RX-API-DMAC7.html)
FR (1) FR2333398A1 (cg-RX-API-DMAC7.html)
GB (1) GB1545254A (cg-RX-API-DMAC7.html)
ZA (1) ZA766727B (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7903346A (nl) * 1979-04-27 1980-10-29 Bell Telephone Mfg Digitaal signaleringsstelsel.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912869A (en) * 1973-11-21 1975-10-14 Tel Tone Corp Multifrequency-to-digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912869A (en) * 1973-11-21 1975-10-14 Tel Tone Corp Multifrequency-to-digital converter

Also Published As

Publication number Publication date
GB1545254A (en) 1979-05-02
ZA766727B (en) 1977-10-26
DE2553258C3 (de) 1980-07-03
ES453636A1 (es) 1977-11-16
FR2333398B1 (cg-RX-API-DMAC7.html) 1982-10-22
DE2553258B2 (de) 1979-10-25
BE848776R (fr) 1977-05-26
CA1078980A (en) 1980-06-03
CH601955A5 (cg-RX-API-DMAC7.html) 1978-07-14
DE2553258A1 (de) 1977-06-02

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Legal Events

Date Code Title Description
ST Notification of lapse