IT978267B - Circuito integrato per l invio di impulsi con pulsanti - Google Patents
Circuito integrato per l invio di impulsi con pulsantiInfo
- Publication number
- IT978267B IT978267B IT1935373A IT1935373A IT978267B IT 978267 B IT978267 B IT 978267B IT 1935373 A IT1935373 A IT 1935373A IT 1935373 A IT1935373 A IT 1935373A IT 978267 B IT978267 B IT 978267B
- Authority
- IT
- Italy
- Prior art keywords
- buttons
- integrated circuit
- sending pulses
- pulses
- sending
- Prior art date
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)
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 |
|---|---|
| IT978267B true IT978267B (it) | 1974-09-20 |
Family
ID=5833641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT1935373A IT978267B (it) | 1972-01-21 | 1973-01-19 | Circuito integrato per l invio di impulsi con pulsanti |
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)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2114075A5 (de) * | 1970-11-16 | 1972-06-30 | Cit Alcatel |
-
0
- BE BE794179D patent/BE794179A/xx unknown
-
1972
- 1972-01-21 DE DE19722202850 patent/DE2202850C2/de not_active Expired
-
1973
- 1973-01-04 GB GB55873A patent/GB1386212A/en not_active Expired
- 1973-01-15 NL NL7300583A patent/NL7300583A/xx not_active Application Discontinuation
- 1973-01-18 FR FR7301691A patent/FR2168473B1/fr not_active Expired
- 1973-01-19 CH CH74773A patent/CH553521A/de not_active IP Right Cessation
- 1973-01-19 IT IT1935373A patent/IT978267B/it active
- 1973-01-20 ES ES410848A patent/ES410848A1/es not_active Expired
- 1973-01-22 JP JP940373A patent/JPS4884509A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| 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 |
| CH553521A (de) | 1974-08-30 |
| DE2202850C2 (de) | 1979-03-15 |
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