BE725158A - - Google Patents
Info
- Publication number
- BE725158A BE725158A BE725158DA BE725158A BE 725158 A BE725158 A BE 725158A BE 725158D A BE725158D A BE 725158DA BE 725158 A BE725158 A BE 725158A
- 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
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR56352A FR1488289A (fr) | 1966-04-04 | 1966-04-04 | Procédé et dispositif pour l'identification des fréquences par des circuits logiques |
| FR98324A FR91975E (fr) | 1966-04-04 | 1967-03-10 | Procédé et dispositif pour l'identification des fréquences par des circuits logiques |
| FR133644A FR94830E (fr) | 1966-04-04 | 1967-12-22 | Procédé et dispositif pour l'identification des fréquences par des circuits logiques. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE725158A true BE725158A (de) | 1969-06-09 |
Family
ID=8643683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE725158D BE725158A (de) | 1966-04-04 | 1968-12-09 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3573613A (de) |
| BE (1) | BE725158A (de) |
| DE (1) | DE1816760A1 (de) |
| FR (1) | FR94830E (de) |
| GB (1) | GB1217610A (de) |
| LU (1) | LU57518A1 (de) |
| NL (1) | NL6818069A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1263128B (de) * | 1966-02-03 | 1968-03-14 | Karst Fa Robert | Einteiliger Isolator zur Befestigung von Kabeln |
| US3934097A (en) * | 1974-08-12 | 1976-01-20 | Bell Telephone Laboratories, Incorporated | Multifrequency tone detection |
| DE2702581C2 (de) * | 1977-01-22 | 1982-10-28 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Verfahren und Schaltungsanordnungen zur Frequenzerkennung |
| DE2943625C2 (de) * | 1979-10-29 | 1981-11-12 | Combé, Hubert, 1000 Berlin | Rohrschelle |
| DE19811889A1 (de) * | 1998-03-18 | 1999-09-30 | Usd Formteiltechnik Gmbh | Spannschelle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3215934A (en) * | 1960-10-21 | 1965-11-02 | Sylvania Electric Prod | System for quantizing intelligence according to ratio of outputs of adjacent band-pass filters |
| US3221250A (en) * | 1962-11-02 | 1965-11-30 | Wang Laboratories | Digital frequency meter |
-
1967
- 1967-12-22 FR FR133644A patent/FR94830E/fr not_active Expired
-
1968
- 1968-11-15 GB GB54464/68A patent/GB1217610A/en not_active Expired
- 1968-12-03 US US780850A patent/US3573613A/en not_active Expired - Lifetime
- 1968-12-09 BE BE725158D patent/BE725158A/xx unknown
- 1968-12-11 LU LU57518D patent/LU57518A1/xx unknown
- 1968-12-16 NL NL6818069A patent/NL6818069A/xx not_active Application Discontinuation
- 1968-12-23 DE DE19681816760 patent/DE1816760A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR94830E (fr) | 1969-11-28 |
| LU57518A1 (de) | 1970-06-11 |
| NL6818069A (de) | 1969-06-24 |
| US3573613A (en) | 1971-04-06 |
| DE1816760A1 (de) | 1970-04-09 |
| GB1217610A (en) | 1970-12-31 |