BE698389A - - Google Patents
Info
- Publication number
- BE698389A BE698389A BE698389DA BE698389A BE 698389 A BE698389 A BE 698389A BE 698389D A BE698389D A BE 698389DA BE 698389 A BE698389 A BE 698389A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Electronic Switches (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Amplifiers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST025382 | 1966-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE698389A true BE698389A (cg-RX-API-DMAC10.html) | 1967-11-13 |
Family
ID=7460525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE698389D BE698389A (cg-RX-API-DMAC10.html) | 1966-05-12 | 1967-05-12 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3501703A (cg-RX-API-DMAC10.html) |
| AT (1) | AT299329B (cg-RX-API-DMAC10.html) |
| BE (1) | BE698389A (cg-RX-API-DMAC10.html) |
| DE (1) | DE1487973B2 (cg-RX-API-DMAC10.html) |
| GB (1) | GB1189164A (cg-RX-API-DMAC10.html) |
| NL (1) | NL6706645A (cg-RX-API-DMAC10.html) |
| NO (1) | NO122318B (cg-RX-API-DMAC10.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE388100B (sv) * | 1975-10-03 | 1976-09-20 | Ericsson Telefon Ab L M | Anordning for detektering av en tonsignal med bestemd frekvens |
| SE397763B (sv) * | 1976-03-09 | 1977-11-14 | Ericsson Telefon Ab L M | Mottagaranordning for storningskenslig detektering av atminstone tva tonfrekvenser i en inkommande tonsignal |
| US5410541A (en) * | 1992-05-04 | 1995-04-25 | Ivon International, Inc. | System for simultaneous analog and digital communications over an analog channel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE431048A (cg-RX-API-DMAC10.html) * | 1937-11-12 | |||
| US2319306A (en) * | 1941-10-31 | 1943-05-18 | Bell Telephone Labor Inc | Signaling system |
| FR996042A (fr) * | 1945-04-14 | 1951-12-12 | Perfectionnement aux signaleurs d'impulsions | |
| FR928242A (fr) * | 1946-05-18 | 1947-11-21 | Materiel Telephonique | Systèmes de signalisation électrique |
| DE1146137B (de) * | 1961-11-16 | 1963-03-28 | Standard Elektrik Lorenz Ag | Tonfrequenzsignalempfaenger mit Sprachsperre |
-
1966
- 1966-05-12 DE DE19661487973 patent/DE1487973B2/de active Pending
-
1967
- 1967-02-16 AT AT151567A patent/AT299329B/de not_active IP Right Cessation
- 1967-05-04 US US636101A patent/US3501703A/en not_active Expired - Lifetime
- 1967-05-05 GB GB20925/67A patent/GB1189164A/en not_active Expired
- 1967-05-10 NO NO168076A patent/NO122318B/no unknown
- 1967-05-12 NL NL6706645A patent/NL6706645A/xx unknown
- 1967-05-12 BE BE698389D patent/BE698389A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6706645A (cg-RX-API-DMAC10.html) | 1967-11-13 |
| DE1487973A1 (de) | 1969-03-20 |
| DE1487973B2 (de) | 1970-10-08 |
| GB1189164A (en) | 1970-04-22 |
| NO122318B (cg-RX-API-DMAC10.html) | 1971-06-14 |
| AT299329B (de) | 1972-06-12 |
| US3501703A (en) | 1970-03-17 |