NL258188A - - Google Patents
Info
- Publication number
- NL258188A NL258188A NL258188DA NL258188A NL 258188 A NL258188 A NL 258188A NL 258188D A NL258188D A NL 258188DA NL 258188 A NL258188 A NL 258188A
- Authority
- NL
- Netherlands
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)
- Telephonic Communication Services (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES66021A DE1103400B (de) | 1959-11-27 | 1959-11-27 | Verfahren und Schaltungsanordnung zur Vermeidung von Stoerungen der Tonfrequenzzeichen infolge des durch elektrische Gabeln veranlassten Mitflusses in Signalkreisen von Fernsprech-anlagen mit Mehrfrequenzencodewahl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL258188A true NL258188A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=7498486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL258188D NL258188A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1959-11-27 |
Country Status (5)
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE936879C (de) * | 1952-07-15 | 1955-12-22 | Heinrich Dipl-Ing Gerwig | Selbstwaehlsystem |
| DE1007382B (de) * | 1954-06-22 | 1957-05-02 | Siemens Ag | Elektrischer Signalempfaenger zum Empfang von Spannungen eines aus wenigstens zwei Frequenzen zusammengesetzten Signals |
| DE1015487B (de) * | 1955-06-03 | 1957-09-12 | Standard Elektrik Ag | Schaltungsanordnung zum Ausgleich verschiedener Signalpegel in einer Empfangseinrichtung fuer Signale nach dem Frequenzkodesystem |
-
0
- NL NL258188D patent/NL258188A/xx unknown
-
1959
- 1959-11-27 DE DES66021A patent/DE1103400B/de active Pending
-
1960
- 1960-11-15 CH CH1278460A patent/CH387108A/de unknown
- 1960-11-22 BE BE597354A patent/BE597354A/fr unknown
- 1960-11-28 GB GB4087660A patent/GB958385A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB958385A (en) | 1964-05-21 |
| BE597354A (fr) | 1961-03-15 |
| CH387108A (de) | 1965-01-31 |
| DE1103400B (de) | 1961-03-30 |