FR1509533A - Générateur basse-fréquence commandé par touches - Google Patents

Générateur basse-fréquence commandé par touches

Info

Publication number
FR1509533A
FR1509533A FR92724A FR92724A FR1509533A FR 1509533 A FR1509533 A FR 1509533A FR 92724 A FR92724 A FR 92724A FR 92724 A FR92724 A FR 92724A FR 1509533 A FR1509533 A FR 1509533A
Authority
FR
France
Prior art keywords
keys
low
frequency generator
generator controlled
controlled
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
FR92724A
Other languages
English (en)
Inventor
Lorehz Gasser
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
Application granted granted Critical
Publication of FR1509533A publication Critical patent/FR1509533A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Lock And Its Accessories (AREA)
  • Transmitters (AREA)
  • Selective Calling Equipment (AREA)
FR92724A 1966-01-28 1967-01-27 Générateur basse-fréquence commandé par touches Expired FR1509533A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST024918 1966-01-28

Publications (1)

Publication Number Publication Date
FR1509533A true FR1509533A (fr) 1968-01-12

Family

ID=7460326

Family Applications (1)

Application Number Title Priority Date Filing Date
FR92724A Expired FR1509533A (fr) 1966-01-28 1967-01-27 Générateur basse-fréquence commandé par touches

Country Status (7)

Country Link
US (1) US3526724A (fr)
CH (1) CH457564A (fr)
DE (1) DE1487960C3 (fr)
FR (1) FR1509533A (fr)
GB (1) GB1155765A (fr)
NL (1) NL6701462A (fr)
SE (1) SE324594B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831015A (en) * 1972-06-08 1974-08-20 Intel Corp System for generating a multiplicity of frequencies from a single reference frequency

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL242923A (fr) * 1958-09-08
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

Also Published As

Publication number Publication date
SE324594B (fr) 1970-06-08
NL6701462A (fr) 1967-07-31
DE1487960A1 (de) 1969-02-27
US3526724A (en) 1970-09-01
DE1487960B2 (de) 1973-05-03
DE1487960C3 (de) 1973-11-22
CH457564A (de) 1968-06-15
GB1155765A (en) 1969-06-18

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