GB2004162A - Telephones with keyboards - Google Patents

Telephones with keyboards

Info

Publication number
GB2004162A
GB2004162A GB7835695A GB7835695A GB2004162A GB 2004162 A GB2004162 A GB 2004162A GB 7835695 A GB7835695 A GB 7835695A GB 7835695 A GB7835695 A GB 7835695A GB 2004162 A GB2004162 A GB 2004162A
Authority
GB
United Kingdom
Prior art keywords
keyboard
networks
telephone
frequency
microprocessor
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.)
Granted
Application number
GB7835695A
Other versions
GB2004162B (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.)
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
Original Assignee
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
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 Sodeco Saia AG, Societe des Compteurs de Geneve SODECO filed Critical Sodeco Saia AG
Publication of GB2004162A publication Critical patent/GB2004162A/en
Application granted granted Critical
Publication of GB2004162B publication Critical patent/GB2004162B/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
    • 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
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
    • H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
    • H04M1/27495—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips implemented by means of discrete electronic components, i.e. neither programmable nor microprocessor-controlled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Discrete Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Prepayment Telephone Systems (AREA)
  • Telephone Function (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Set Structure (AREA)

Abstract

In keyboard telephones a microprocessor P is actuated by a keyboard C and controls a relay R1 with a pulse contact Li in one of the speech wires a or b, and a further relay R2 with a change- over dial-off-normal contact which in one position connects the speech wires a and b. A change-over switch F1 is switched into one position I in telephone networks with pulse selection and another position F in networks with frequency selection. A multi-frequency generator G feeds frequency pulses which correspond to the number selected by the keyboard C into the subscriber line, in networks with frequency selection. For a coin-operated telephone there is a transformer TR3 the primary and secondary windings of which are respectively connected to the generator G in parallel with the telephone receiver E. The microprocessor P receives data about credit and supplies to the receiver E a signal for additional payment. <IMAGE>
GB7835695A 1977-09-12 1978-09-05 Telephones with keyboards Expired GB2004162B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1110777A CH620559A5 (en) 1977-09-12 1977-09-12

Publications (2)

Publication Number Publication Date
GB2004162A true GB2004162A (en) 1979-03-21
GB2004162B GB2004162B (en) 1982-02-10

Family

ID=4370119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7835695A Expired GB2004162B (en) 1977-09-12 1978-09-05 Telephones with keyboards

Country Status (9)

Country Link
AT (1) AT366218B (en)
BE (1) BE870379A (en)
CH (1) CH620559A5 (en)
DE (1) DE2825785C2 (en)
DK (1) DK148867C (en)
FR (1) FR2402976B1 (en)
GB (1) GB2004162B (en)
NL (1) NL7809232A (en)
NO (1) NO148580C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566215A1 (en) * 1984-06-19 1985-12-20 Semiconducteurs Ste Gle DEVICE FOR ADAPTING A KEYBOARD WITH DECIMAL OR MULTI-FREQUENCY TRANSMISSION ON A TELEPHONE STATION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321778C2 (en) * 1993-06-30 1996-10-02 Siemens Ag DTMF / IWV circuitry for telephone terminals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1298077A (en) * 1969-10-23 1972-11-29 Post Office Improvements in or relating to telephone subscribers' sets
GB1395577A (en) * 1972-05-11 1975-05-29 Standard Telephones Cables Ltd Telephones
FR2270738B1 (en) * 1974-02-14 1979-02-09 Merlin Jean Claude
GB1524028A (en) * 1974-10-22 1978-09-06 Standard Telephones Cables Ltd Repertory dialler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566215A1 (en) * 1984-06-19 1985-12-20 Semiconducteurs Ste Gle DEVICE FOR ADAPTING A KEYBOARD WITH DECIMAL OR MULTI-FREQUENCY TRANSMISSION ON A TELEPHONE STATION
GB2160745A (en) * 1984-06-19 1985-12-24 Semiconducteurs Societe Genera A device for adaptation of a decimal or multifrequency code dialling keyboard to a conventional telephone set

Also Published As

Publication number Publication date
NL7809232A (en) 1979-03-14
NO148580C (en) 1983-11-02
FR2402976B1 (en) 1985-08-30
FR2402976A1 (en) 1979-04-06
NO148580B (en) 1983-07-25
NO783049L (en) 1979-03-13
DE2825785A1 (en) 1979-03-15
AT366218B (en) 1982-03-25
DK399878A (en) 1979-03-13
CH620559A5 (en) 1980-11-28
GB2004162B (en) 1982-02-10
BE870379A (en) 1979-01-02
ATA580578A (en) 1981-07-15
DK148867B (en) 1985-10-28
DE2825785C2 (en) 1983-11-03
DK148867C (en) 1986-04-21

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee