FR1042770A - Récepteur de signalisation utilisant des signaux alternatifs - Google Patents
Récepteur de signalisation utilisant des signaux alternatifsInfo
- Publication number
- FR1042770A FR1042770A FR1042770DA FR1042770A FR 1042770 A FR1042770 A FR 1042770A FR 1042770D A FR1042770D A FR 1042770DA FR 1042770 A FR1042770 A FR 1042770A
- Authority
- FR
- France
- Prior art keywords
- alternating signals
- signaling receiver
- signaling
- receiver
- alternating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB297999X | 1950-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1042770A true FR1042770A (fr) | 1953-11-03 |
Family
ID=10297349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1042770D Expired FR1042770A (fr) | 1950-03-08 | 1951-03-07 | Récepteur de signalisation utilisant des signaux alternatifs |
Country Status (6)
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749390A (en) * | 1952-12-02 | 1956-06-05 | Itt | Ringing circuit for telephone line and radio order wire |
FR1096599A (fr) * | 1953-12-22 | 1955-06-22 | Lignes Telegraph Telephon | Dispositif comportant des éléments non linéaires associés à des circuits sélectifs |
US2806903A (en) * | 1954-03-24 | 1957-09-17 | Int Standard Electric Corp | Voice frequency signal receivers |
US2957950A (en) * | 1954-11-18 | 1960-10-25 | Bell Telephone Labor Inc | Transistor selective ringing circuit |
US2955161A (en) * | 1956-06-29 | 1960-10-04 | Automatic Elect Lab | Tone detector for coin control |
US2939919A (en) * | 1958-04-17 | 1960-06-07 | Bell Telephone Labor Inc | Subscriber ringing in carrier telephone systems |
GB946952A (en) * | 1961-06-14 | 1964-01-15 | Ass Elect Ind | Improvements relating to voice-frequency signal receivers as used in telephone systems |
DE1146137B (de) * | 1961-11-16 | 1963-03-28 | Standard Elektrik Lorenz Ag | Tonfrequenzsignalempfaenger mit Sprachsperre |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2145053A (en) * | 1936-11-18 | 1939-01-24 | Bell Telephone Labor Inc | Signaling system |
US2282131A (en) * | 1940-01-12 | 1942-05-05 | Associated Electric Lab Inc | Electrical signaling system |
GB541731A (en) * | 1940-06-07 | 1941-12-09 | Telephone Mfg Co Ltd | Improvements in and relating to telephone and like systems |
-
0
- BE BE501722D patent/BE501722A/xx unknown
- NL NL159620D patent/NL159620C/xx active
- NL NL84411D patent/NL84411C/xx active
-
1950
- 1950-03-08 GB GB5874/50A patent/GB691741A/en not_active Expired
-
1951
- 1951-03-05 US US213965A patent/US2686227A/en not_active Expired - Lifetime
- 1951-03-07 FR FR1042770D patent/FR1042770A/fr not_active Expired
- 1951-03-07 CH CH297999D patent/CH297999A/de unknown
Also Published As
Publication number | Publication date |
---|---|
GB691741A (en) | 1953-05-20 |
NL159620C (US07922777-20110412-C00004.png) | |
BE501722A (US07922777-20110412-C00004.png) | |
CH297999A (de) | 1954-04-15 |
NL84411C (US07922777-20110412-C00004.png) | |
US2686227A (en) | 1954-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR1014510A (fr) | Système de signalisation | |
FR989540A (fr) | Récepteur de signaux électriques | |
FR951783A (fr) | Système de signalisation | |
CH290349A (fr) | Emetteur de sons. | |
FR1042770A (fr) | Récepteur de signalisation utilisant des signaux alternatifs | |
FR987802A (fr) | Récepteur de signaux électriques | |
FR945893A (fr) | Dispositif de signalisation | |
CH301267A (fr) | Récepteur de signaux télégraphiques. | |
FR941327A (fr) | Système de signalisation | |
FR1062795A (fr) | Récepteur de signal | |
CH312612A (fr) | Dispositif régénérateur de signaux | |
FR1044603A (fr) | Systèmes électriques de signalisation | |
FR930976A (fr) | Dispositif électromagnétique de signalisation | |
FR1009041A (fr) | Dispositif de signalisation | |
FR1024819A (fr) | Dispositif de signalisation | |
FR948715A (fr) | Perfectionnements aux systèmes de signalisation radio-électriques dirigés | |
FR1054412A (fr) | Installation de signalisation par impulsions | |
FR1012456A (fr) | Procédés de transmission des signaux de signalisation | |
CH286257A (fr) | Oscillateur de signalisation. | |
FR1013867A (fr) | Générateurs de signaux rectangulaires | |
FR1012380A (fr) | Multiplicateurs de signaux | |
FR1019724A (fr) | Perfectionnements aux systèmes de signalisation | |
FR1000917A (fr) | Dispositif de télésignalisation | |
FR998655A (fr) | Perfectionnements aux systèmes de signalisation | |
FR992818A (fr) | Système de signalisation |