BE481274A - - Google Patents
Info
- Publication number
- BE481274A BE481274A BE481274DA BE481274A BE 481274 A BE481274 A BE 481274A BE 481274D A BE481274D A BE 481274DA BE 481274 A BE481274 A BE 481274A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/16—Electric signal transmission systems in which transmission is by pulses
- G08C19/28—Electric signal transmission systems in which transmission is by pulses using pulse code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
-
- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US505778A US2438903A (en) | 1943-10-11 | 1943-10-11 | Pulse communication system employing pulse frequency reduction for signaling |
Publications (1)
Publication Number | Publication Date |
---|---|
BE481274A true BE481274A (de) |
Family
ID=24011779
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE473141D BE473141A (de) | 1943-10-11 | ||
BE481274D BE481274A (de) | 1943-10-11 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE473141D BE473141A (de) | 1943-10-11 |
Country Status (5)
Country | Link |
---|---|
US (1) | US2438903A (de) |
BE (2) | BE481274A (de) |
CH (2) | CH276277A (de) |
FR (2) | FR946811A (de) |
GB (2) | GB583629A (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2485611A (en) * | 1944-04-07 | 1949-10-25 | Standard Telephones Cables Ltd | Broadcasting system |
US2516885A (en) * | 1944-04-17 | 1950-08-01 | Standard Telephones Cables Ltd | Relay system |
FR958674A (de) * | 1947-01-02 | 1950-03-17 | ||
US2534842A (en) * | 1947-10-10 | 1950-12-19 | Panoramic Radio Corp | Dual synchrometric system |
US2534844A (en) * | 1947-11-26 | 1950-12-19 | Panoramic Radio Corp | Gated triple synchrometric system |
US2590746A (en) * | 1948-09-10 | 1952-03-25 | Lee E Adler | Control system for carrier telecommunication circuits |
US2773937A (en) * | 1949-12-24 | 1956-12-11 | Gen Dynamics Corp | Electronic signaling and switching system |
DE957241C (de) * | 1951-04-17 | 1957-01-31 | Cie Ind Des Telephones Sa | Anordnung zur Signalgabe bei Impulsuebertragungssystemen |
US2945094A (en) * | 1954-09-07 | 1960-07-12 | Itt | Pulse signalling system |
US2962553A (en) * | 1954-11-23 | 1960-11-29 | Donald E Campbell | Coding and decoding system |
NL269710A (de) * | 1960-10-20 | |||
US3146314A (en) * | 1961-09-25 | 1964-08-25 | Gen Dynamics Corp | Means for generating warbling tone ringing signals in a time division multiplex communication system |
SE404982B (sv) * | 1977-12-22 | 1978-11-06 | Ericsson Telefon Ab L M | Sett och anordning for att i en telefonianleggning overfora digital information |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1484405A (en) * | 1920-01-12 | 1924-02-19 | Western Electric Co | Signaling system |
US1532336A (en) * | 1920-12-18 | 1925-04-07 | Rca Corp | Wireless-telegraph calling device |
US2048081A (en) * | 1933-04-29 | 1936-07-21 | Alger S Riggs | Communication system |
GB418525A (en) * | 1933-05-20 | 1934-10-26 | Newsome Henry Clough | Improvements in calling devices in connection with wireless signalling or carrier frequency line signalling systems |
GB470495A (en) * | 1935-11-14 | 1937-08-16 | Alan Dower Blumlein | Improvements in or relating to multiplex signalling systems |
US2204375A (en) * | 1937-03-17 | 1940-06-11 | Morrison Montford | Electronic distributor system |
US2213941A (en) * | 1938-07-26 | 1940-09-03 | Bell Telephone Labor Inc | Multiplex signaling by phase discrimination |
US2263369A (en) * | 1939-02-03 | 1941-11-18 | Hartford Nat Bank & Trust Co | Multiplex telephony system |
NL60289C (de) * | 1939-02-20 |
-
0
- BE BE473141D patent/BE473141A/xx unknown
- BE BE481274D patent/BE481274A/xx unknown
-
1943
- 1943-10-11 US US505778A patent/US2438903A/en not_active Expired - Lifetime
-
1944
- 1944-11-09 GB GB22121/44A patent/GB583629A/en not_active Expired
-
1945
- 1945-02-07 GB GB3162/45A patent/GB600261A/en not_active Expired
-
1947
- 1947-03-31 CH CH276277D patent/CH276277A/fr unknown
- 1947-05-14 FR FR946811D patent/FR946811A/fr not_active Expired
- 1947-08-05 FR FR57499D patent/FR57499E/fr not_active Expired
- 1947-09-18 CH CH262447D patent/CH262447A/de unknown
Also Published As
Publication number | Publication date |
---|---|
FR57499E (fr) | 1953-01-28 |
US2438903A (en) | 1948-04-06 |
GB600261A (en) | 1948-04-05 |
FR946811A (fr) | 1949-06-15 |
CH262447A (de) | 1949-06-30 |
GB583629A (en) | 1946-12-23 |
BE473141A (de) | |
CH276277A (fr) | 1951-06-30 |