FR2324182A1 - Circuit pour recepteur de signal selectif, en particulier pour systemes telephoniques - Google Patents

Circuit pour recepteur de signal selectif, en particulier pour systemes telephoniques

Info

Publication number
FR2324182A1
FR2324182A1 FR7627478A FR7627478A FR2324182A1 FR 2324182 A1 FR2324182 A1 FR 2324182A1 FR 7627478 A FR7627478 A FR 7627478A FR 7627478 A FR7627478 A FR 7627478A FR 2324182 A1 FR2324182 A1 FR 2324182A1
Authority
FR
France
Prior art keywords
circuit
signal receiver
telephone systems
selective signal
selective
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.)
Withdrawn
Application number
FR7627478A
Other languages
English (en)
Inventor
Herbert Ball
Wolf Ohl
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 FR2324182A1 publication Critical patent/FR2324182A1/fr
Withdrawn legal-status Critical Current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)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR7627478A 1975-09-13 1976-09-13 Circuit pour recepteur de signal selectif, en particulier pour systemes telephoniques Withdrawn FR2324182A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2540859A DE2540859C2 (de) 1975-09-13 1975-09-13 Schaltungsanordnung für einen selektiven Zeichenempfänger, insbesondere für Fernsprechanlagen

Publications (1)

Publication Number Publication Date
FR2324182A1 true FR2324182A1 (fr) 1977-04-08

Family

ID=5956376

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627478A Withdrawn FR2324182A1 (fr) 1975-09-13 1976-09-13 Circuit pour recepteur de signal selectif, en particulier pour systemes telephoniques

Country Status (11)

Country Link
AT (1) AT353852B (fr)
BE (1) BE846033R (fr)
CH (1) CH625925A5 (fr)
DE (1) DE2540859C2 (fr)
DK (1) DK412176A (fr)
ES (1) ES451494A1 (fr)
FR (1) FR2324182A1 (fr)
GB (1) GB1529758A (fr)
NL (1) NL7609996A (fr)
NO (1) NO763089L (fr)
SE (1) SE7610009L (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334426A1 (de) * 1973-07-06 1975-01-23 Telefonbau & Normalzeit Gmbh Auswerter fuer sprachgeschuetzte frequenzselektive zeichenempfaenger nach dem mehrfrequenzverfahren
DE2341224A1 (de) * 1973-08-16 1975-02-20 Standard Elektrik Lorenz Ag Verfahren zur frequenzerkennung in selektiven zeichenempfaengern fuer fernmelde-, insbesondere fernsprechanlagen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2341225B2 (de) * 1973-08-16 1976-10-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334426A1 (de) * 1973-07-06 1975-01-23 Telefonbau & Normalzeit Gmbh Auswerter fuer sprachgeschuetzte frequenzselektive zeichenempfaenger nach dem mehrfrequenzverfahren
DE2341224A1 (de) * 1973-08-16 1975-02-20 Standard Elektrik Lorenz Ag Verfahren zur frequenzerkennung in selektiven zeichenempfaengern fuer fernmelde-, insbesondere fernsprechanlagen
FR2241174A1 (fr) * 1973-08-16 1975-03-14 Int Standard Electric Corp

Also Published As

Publication number Publication date
CH625925A5 (en) 1981-10-15
DE2540859C2 (de) 1984-01-12
NO763089L (fr) 1977-03-15
AT353852B (de) 1979-12-10
ES451494A1 (es) 1977-10-01
NL7609996A (nl) 1977-03-15
DK412176A (da) 1977-03-14
GB1529758A (en) 1978-10-25
BE846033R (nl) 1977-03-10
SE7610009L (sv) 1977-03-14
DE2540859A1 (de) 1977-03-17
ATA675776A (de) 1979-05-15

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Legal Events

Date Code Title Description
ST Notification of lapse