FR939828A - Dispositif de commande des sélecteurs par fréquence acoustique - Google Patents

Dispositif de commande des sélecteurs par fréquence acoustique

Info

Publication number
FR939828A
FR939828A FR939828DA FR939828A FR 939828 A FR939828 A FR 939828A FR 939828D A FR939828D A FR 939828DA FR 939828 A FR939828 A FR 939828A
Authority
FR
France
Prior art keywords
control device
acoustic frequency
frequency selectors
selectors control
acoustic
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.)
Expired
Application number
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR939828A publication Critical patent/FR939828A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Relay Circuits (AREA)
FR939828D 1946-01-26 1947-01-20 Dispositif de commande des sélecteurs par fréquence acoustique Expired FR939828A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE640508X 1946-01-26

Publications (1)

Publication Number Publication Date
FR939828A true FR939828A (fr) 1948-11-25

Family

ID=20313773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939828D Expired FR939828A (fr) 1946-01-26 1947-01-20 Dispositif de commande des sélecteurs par fréquence acoustique

Country Status (4)

Country Link
US (1) US2761901A (fr)
BE (1) BE470519A (fr)
FR (1) FR939828A (fr)
GB (1) GB640508A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101510B (de) * 1958-11-03 1961-03-09 Ericsson Telefon Ab L M Anordnung zum Aussenden von tonfrequenten Wechselstromsignalen in Teilnehmerstellen in Fernsprechanlagen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL236960A (fr) * 1958-03-10
NL129299C (fr) * 1958-11-24
DE1762060A1 (de) * 1967-03-31 1970-04-30 Nippon Electric Co Zwischenamtswaehlsystem fuer ein Fernsprech-Waehlvermittlungsnetz

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483523A (fr) * 1940-05-15
US2356330A (en) * 1943-04-09 1944-08-22 Bell Telephone Labor Inc Signaling system
US2299479A (en) * 1941-04-26 1942-10-20 Bell Telephone Labor Inc Signaling system
US2310452A (en) * 1941-06-05 1943-02-09 Bell Telephone Labor Inc Switching system
US2303356A (en) * 1941-12-30 1942-12-01 Bell Telephone Labor Inc Selecting system
US2326478A (en) * 1942-02-17 1943-08-10 Bell Telephone Labor Inc Selection system
US2326458A (en) * 1942-02-17 1943-08-10 Bell Telephone Labor Inc Selection system
US2332912A (en) * 1942-05-01 1943-10-26 Bell Telephone Labor Inc Telephone system
US2388347A (en) * 1944-06-27 1945-11-06 Bell Telephone Labor Inc Signaling system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101510B (de) * 1958-11-03 1961-03-09 Ericsson Telefon Ab L M Anordnung zum Aussenden von tonfrequenten Wechselstromsignalen in Teilnehmerstellen in Fernsprechanlagen

Also Published As

Publication number Publication date
US2761901A (en) 1956-09-04
BE470519A (fr)
GB640508A (en) 1950-07-19

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