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

Applications Claiming Priority (2)

Publications (3)

Family

ID=4370119

Family Applications (1)

Country Status (9)

Families Citing this family (3)

Family Cites Families (4)

• 1977
  • 1977-09-12 CH CH1110777A patent/CH620559A5/de not_active IP Right Cessation
  • 1977-09-29 FR FR7729308A patent/FR2402976B1/en not_active Expired
• 1978
  • 1978-06-13 DE DE2825785A patent/DE2825785C2/en not_active Expired
  • 1978-08-10 AT AT0580578A patent/AT366218B/en not_active IP Right Cessation
  • 1978-09-05 GB GB7835695A patent/GB2004162B/en not_active Expired
  • 1978-09-06 NO NO783049A patent/NO148580C/en unknown
  • 1978-09-11 DK DK399878A patent/DK148867C/en not_active IP Right Cessation
  • 1978-09-11 NL NL7809232A patent/NL7809232A/en not_active Application Discontinuation
  • 1978-09-11 BE BE190404A patent/BE870379A/en not_active IP Right Cessation

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