ES410848A1 - Integrated circuit for push button pulse dialing - Google Patents

Integrated circuit for push button pulse dialing

Info

Publication number
ES410848A1
ES410848A1 ES410848A ES410848A ES410848A1 ES 410848 A1 ES410848 A1 ES 410848A1 ES 410848 A ES410848 A ES 410848A ES 410848 A ES410848 A ES 410848A ES 410848 A1 ES410848 A1 ES 410848A1
Authority
ES
Spain
Prior art keywords
pulses
marker
integrated circuit
clock
frequency
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
ES410848A
Other languages
Spanish (es)
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries 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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of ES410848A1 publication Critical patent/ES410848A1/en
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
    • H04M1/31—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)

Abstract

An integrated circuit arrangement for push-button pulse marking by field-effect transistors with the use of an isolated gate electrode with which automatic transmission of marker pulses is effected, replacing the mechanical control of the "non-normal" marker contacts by a storage circuit for the digit pulses generated as binary tetrads by a mechanical keyboard that electronically suppresses the phenomenon of the rebound of the keyboard contacts and with the associated storage control, being the totality of the circuit supplied and controlled by clock pulses produced by a clock pulse generator and in which by means of a frequency divider circuit the necessary frequency for the marker pulses is obtained starting from the frequency of the marker clock pulses by by means of a marker clock pulse generator by means of an im generator marking pulses. (Machine-translation by Google Translate, not legally binding)
ES410848A 1972-01-21 1973-01-20 Integrated circuit for push button pulse dialing Expired ES410848A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722202850 DE2202850C2 (en) 1972-01-21 1972-01-21 Integrated circuit arrangement for dialing phone numbers

Publications (1)

Publication Number Publication Date
ES410848A1 true ES410848A1 (en) 1975-12-16

Family

ID=5833641

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410848A Expired ES410848A1 (en) 1972-01-21 1973-01-20 Integrated circuit for push button pulse dialing

Country Status (9)

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

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 (en) * 1975-07-23 1977-02-18 Bailleul Roland French telephone network line keyboard adaptor - has circuits to suppress listening control during numbering

Family Cites Families (1)

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

Also Published As

Publication number Publication date
IT978267B (en) 1974-09-20
BE794179A (en) 1973-07-18
NL7300583A (en) 1973-07-24
FR2168473A1 (en) 1973-08-31
CH553521A (en) 1974-08-30
DE2202850B1 (en) 1973-07-12
GB1386212A (en) 1975-03-05
FR2168473B1 (en) 1976-05-14
JPS4884509A (en) 1973-11-09
DE2202850C2 (en) 1979-03-15
DE2202850A1 (en) 1973-07-12

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