FR939087A - Electrical communications systems - Google Patents
Electrical communications systemsInfo
- Publication number
- FR939087A FR939087A FR939087DA FR939087A FR 939087 A FR939087 A FR 939087A FR 939087D A FR939087D A FR 939087DA FR 939087 A FR939087 A FR 939087A
- Authority
- FR
- France
- Prior art keywords
- communications systems
- electrical communications
- electrical
- systems
- communications
- 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
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Near-Field Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3374/42A GB556001A (en) | 1942-03-13 | 1942-03-13 | Improvements relating to electrical communication systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR939087A true FR939087A (en) | 1948-11-03 |
Family
ID=9757111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR939087D Expired FR939087A (en) | 1942-03-13 | 1946-04-01 | Electrical communications systems |
Country Status (5)
Country | Link |
---|---|
US (1) | US2489268A (en) |
BE (1) | BE476184A (en) |
FR (1) | FR939087A (en) |
GB (1) | GB556001A (en) |
NL (2) | NL67408C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2564769A (en) * | 1949-10-25 | 1951-08-21 | Rca Corp | Translating circuit |
US2929924A (en) * | 1955-02-21 | 1960-03-22 | Westinghouse Electric Corp | Radiation suppression circuit |
US2956153A (en) * | 1957-11-08 | 1960-10-11 | Sylvania Electric Prod | Electrical noise reduction techniques |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1584327A (en) * | 1926-05-11 | Electric-wave transmission system | ||
US1564627A (en) * | 1920-03-31 | 1925-12-08 | Rca Corp | Wireless telegraph and telephone transmission |
US1678163A (en) * | 1923-12-29 | 1928-07-24 | Western Electric Co | Modulation |
US1655543A (en) * | 1924-04-18 | 1928-01-10 | Western Electric Co | Transmission system |
US1911253A (en) * | 1926-09-13 | 1933-05-30 | Clinton Dorothy | Radio receiving apparatus |
US1699570A (en) * | 1927-09-23 | 1929-01-22 | American Telephone & Telegraph | Carrier suppression modulation |
US1876793A (en) * | 1929-10-22 | 1932-09-13 | Frank C Talmadge | Radio circuit |
US1971383A (en) * | 1932-03-11 | 1934-08-28 | Telefunken Gmbh | Transmitter |
GB398853A (en) * | 1932-03-22 | 1933-09-22 | Marconi Wireless Telegraph Co | Improvements in or relating to radio and other high frequency modulated carrier wave systems |
US2061734A (en) * | 1934-09-29 | 1936-11-24 | Rca Corp | Signaling system |
US2279659A (en) * | 1937-04-13 | 1942-04-14 | Rca Corp | Frequency modulator |
NL88393C (en) * | 1937-06-18 | |||
US2205359A (en) * | 1938-06-24 | 1940-06-18 | Hygrade Sylvania Corp | Superheterodyne receiver |
US2230243A (en) * | 1938-06-28 | 1941-02-04 | Philip M Haffcke | Signal selection by amplitude discrimination |
US2257282A (en) * | 1939-04-27 | 1941-09-30 | Rca Corp | Frequency modulation of signals |
US2303493A (en) * | 1940-05-17 | 1942-12-01 | Rca Corp | Diversity signaling system |
US2404306A (en) * | 1941-04-01 | 1946-07-16 | Rca Corp | Communication system |
NL137118C (en) * | 1942-08-24 |
-
0
- NL NL136059D patent/NL136059B/xx unknown
- NL NL67408D patent/NL67408C/xx active
- BE BE476184D patent/BE476184A/xx unknown
-
1942
- 1942-03-13 GB GB3374/42A patent/GB556001A/en not_active Expired
-
1943
- 1943-02-16 US US476072A patent/US2489268A/en not_active Expired - Lifetime
-
1946
- 1946-04-01 FR FR939087D patent/FR939087A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE476184A (en) | |
US2489268A (en) | 1949-11-29 |
NL136059B (en) | |
GB556001A (en) | 1943-09-15 |
NL67408C (en) |
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