FR1233409A - Générateurs de signaux de fréquences multiples - Google Patents

Générateurs de signaux de fréquences multiples

Info

Publication number
FR1233409A
FR1233409A FR803419A FR803419A FR1233409A FR 1233409 A FR1233409 A FR 1233409A FR 803419 A FR803419 A FR 803419A FR 803419 A FR803419 A FR 803419A FR 1233409 A FR1233409 A FR 1233409A
Authority
FR
France
Prior art keywords
frequency signal
multiple frequency
signal generators
generators
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.)
Expired
Application number
FR803419A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR1233409A publication Critical patent/FR1233409A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Selective Calling Equipment (AREA)
FR803419A 1958-09-08 1959-08-24 Générateurs de signaux de fréquences multiples Expired FR1233409A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US759474A US3184554A (en) 1958-09-08 1958-09-08 Subscriber calling apparatus

Publications (1)

Publication Number Publication Date
FR1233409A true FR1233409A (fr) 1960-10-12

Family

ID=25055784

Family Applications (1)

Application Number Title Priority Date Filing Date
FR803419A Expired FR1233409A (fr) 1958-09-08 1959-08-24 Générateurs de signaux de fréquences multiples

Country Status (7)

Country Link
US (1) US3184554A (fr)
JP (1) JPS3619851B1 (fr)
BE (1) BE582408A (fr)
DE (1) DE1109215B (fr)
FR (1) FR1233409A (fr)
GB (1) GB873189A (fr)
NL (1) NL242923A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248722A (en) * 1961-02-21 1966-04-26 Hood Gust & Irish Frequency keyed transistor oscillator signal receiver

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281541A (en) * 1963-05-13 1966-10-25 Leonard R Learner Touch sensitive telephone calling apparatus
DE1185665B (de) * 1963-09-14 1965-01-21 Standard Elektrik Lorenz Ag Tastengesteuerter Mehrfrequenz-Tongenerator
US3284577A (en) * 1963-10-10 1966-11-08 Substation apparatus employing a multi- frequency signaling arrangement
US3371162A (en) * 1964-09-02 1968-02-27 Scantlin Electronics Inc System for transmitting digital data via telephone lines utilizing a telephone as the input
CA792305A (en) * 1964-12-03 1968-08-13 N.V. Philips Gloeilampenfabrieken Transmitting arrangement for use in tone frequency pushbutton selection systems
US3381276A (en) * 1965-09-15 1968-04-30 Photo Magnetic Syst Inc Computer systems
CH430809A (de) * 1965-10-27 1967-02-28 Siemens Ag Albis Sendeeinrichtung für Mehrfrequenz-Codewahl
DE1487960C3 (de) * 1966-01-28 1973-11-22 Standard Elektrik Lorenz Ag, 7000 Stuttgart Tastengesteuerter Zweifrequenz Tongenerator fur die Wahlkennzeichen gäbe in Fernmelde , insbesondere Fern sprechvermittlungsanlagen
US3521005A (en) * 1966-09-01 1970-07-21 Bell Telephone Labor Inc Multifrequency signal generator
FR1543779A (fr) * 1966-12-23 Ibm Dispositif engendrant un son
US3891802A (en) * 1969-02-12 1975-06-24 Northeast Electronics Corp Apparatus and method for augmenting a telephone network
US3665489A (en) * 1969-06-06 1972-05-23 Ericsson Telefon Ab L M Telephone instrument for voice frequency choice of number
US3688050A (en) * 1970-10-26 1972-08-29 Stromberg Carlson Corp Telephone set identification system using reverse polarity interrogation signal
US3784759A (en) * 1972-04-17 1974-01-08 Bell Canada Northern Electric Telephone substation apparatus
US3899638A (en) * 1973-10-29 1975-08-12 Interface Technology Inc Portable tone data transmitter
DE2606794C2 (de) * 1976-02-19 1984-12-13 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Teilnehmerstationen mit Tastatur in Fernmelde- insbesondere Fernsprechanlagen
DE2606720C2 (de) * 1976-02-19 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Teilnehmerstationen mit tonfrequenten Tastatur-Wähleinrichtungen in Fernmelde-, insbesondere Fernsprechanlagen
US5993089A (en) * 1997-02-03 1999-11-30 Burrell, Iv; James William 8-bit binary code for use as an 8-dot braille arrangement and data entry system and method for 8-key chordic binary keyboards

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013708B (de) * 1955-12-22 1957-08-14 Siemens Ag Schaltungsanordnung zum Empfang von Signalspannungen
DE1016769B (de) * 1956-09-19 1957-10-03 Standard Elektrik Ag Schaltungsanordnung in einer Empfangseinrichtung fuer Signale nach dem Frequenzcodesystem

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248722A (en) * 1961-02-21 1966-04-26 Hood Gust & Irish Frequency keyed transistor oscillator signal receiver

Also Published As

Publication number Publication date
BE582408A (fr) 1960-12-31
GB873189A (en) 1961-07-19
DE1109215B (de) 1961-06-22
JPS3619851B1 (fr) 1961-10-20
NL242923A (fr)
US3184554A (en) 1965-05-18

Similar Documents

Publication Publication Date Title
FR1233409A (fr) Générateurs de signaux de fréquences multiples
CH387125A (de) Dreidimensional aufgebaute Schaltungsanordnung
BE575607A (nl) Hoogfrequent navigatiestelsel.
NL108041C (nl) Inductieve signaalgever
CH360096A (fr) Générateur de signaux télégraphiques
FR1226403A (fr) Générateurs perfectionnés de signaux électriques
FR1192215A (fr) Générateur de signaux télégraphiques déformés
FR1224854A (fr) Sifflet musical
FR1224933A (fr) Circuit de sélection de fréquence
FR1184740A (fr) Modificateur de signaux
FR1247541A (fr) Générateur de fréquence pour signaux binaires
FR76933E (fr) Générateurs perfectionnés de signaux électriques
FR1207878A (fr) Circuit générateur de signaux
FR74548E (fr) Perfectionnements aux générateurs de signaux
FR1276188A (fr) Générateur de signaux périodiques
FR1192666A (fr) Instrument de nettoyage
FR1355134A (fr) Générateur de signaux de chronométrage
FR1337935A (fr) Générateurs de signaux ultrasoniques
FR1200471A (fr) Dispositif de mesure de fréquences
FR1200587A (fr) Générateur de fonction électronique
FR1200906A (fr) Standard de fréquences
FR1349224A (fr) Générateurs de signaux à fréquence variable
FR1242979A (fr) Générateur de signaux sinusoïdaux
FR1267399A (fr) Perfectionnements aux générateurs de signaux
GR19105B (el) Γεννητριαι εναλλασσομενου ρευματος σταθερας συχνοτητος.