CH553521A - Monolithisch integrierte schaltungsanordnung fuer die tastenwahl von rufnummern. - Google Patents

Monolithisch integrierte schaltungsanordnung fuer die tastenwahl von rufnummern.

Info

Publication number
CH553521A
CH553521A CH74773A CH74773A CH553521A CH 553521 A CH553521 A CH 553521A CH 74773 A CH74773 A CH 74773A CH 74773 A CH74773 A CH 74773A CH 553521 A CH553521 A CH 553521A
Authority
CH
Switzerland
Prior art keywords
integrated circuit
circuit arrangement
telephone numbers
monolithically integrated
key dialing
Prior art date
Application number
CH74773A
Other languages
English (en)
Original Assignee
Itt
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 Itt filed Critical Itt
Publication of CH553521A publication Critical patent/CH553521A/de

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
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Electrotherapy Devices (AREA)
  • Devices For Supply Of Signal Current (AREA)
CH74773A 1972-01-21 1973-01-19 Monolithisch integrierte schaltungsanordnung fuer die tastenwahl von rufnummern. CH553521A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722202850 DE2202850C2 (de) 1972-01-21 1972-01-21 Integrierte Schaltungsanordnung für die Tastenwahl von Rufnummern

Publications (1)

Publication Number Publication Date
CH553521A true CH553521A (de) 1974-08-30

Family

ID=5833641

Family Applications (1)

Application Number Title Priority Date Filing Date
CH74773A CH553521A (de) 1972-01-21 1973-01-19 Monolithisch integrierte schaltungsanordnung fuer die tastenwahl von rufnummern.

Country Status (9)

Country Link
JP (1) JPS4884509A (de)
BE (1) BE794179A (de)
CH (1) CH553521A (de)
DE (1) DE2202850C2 (de)
ES (1) ES410848A1 (de)
FR (1) FR2168473B1 (de)
GB (1) GB1386212A (de)
IT (1) IT978267B (de)
NL (1) NL7300583A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1394148A (en) * 1972-09-11 1975-05-14 Int Standard Electric Corp Push-button telphone subset
FR2319256A1 (fr) * 1975-07-23 1977-02-18 Bailleul Roland Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre fils

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114075A5 (de) * 1970-11-16 1972-06-30 Cit Alcatel

Also Published As

Publication number Publication date
IT978267B (it) 1974-09-20
GB1386212A (en) 1975-03-05
FR2168473A1 (de) 1973-08-31
NL7300583A (de) 1973-07-24
JPS4884509A (de) 1973-11-09
ES410848A1 (es) 1975-12-16
DE2202850B1 (de) 1973-07-12
FR2168473B1 (de) 1976-05-14
BE794179A (nl) 1973-07-18
DE2202850A1 (de) 1973-07-12
DE2202850C2 (de) 1979-03-15

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Legal Events

Date Code Title Description
PL Patent ceased