GB456270A - Improvements in or relating to modulated carrier wave communication systems - Google Patents
Improvements in or relating to modulated carrier wave communication systemsInfo
- Publication number
- GB456270A GB456270A GB11004/36A GB1100436A GB456270A GB 456270 A GB456270 A GB 456270A GB 11004/36 A GB11004/36 A GB 11004/36A GB 1100436 A GB1100436 A GB 1100436A GB 456270 A GB456270 A GB 456270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pair
- pairs
- channels
- frequency
- band
- 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
- 239000000969 carrier Substances 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
- H04J1/045—Filters applied to frequency transposition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Radio Relay Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL456270X | 1935-04-30 | ||
| DES0123063 | 1936-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB456270A true GB456270A (en) | 1936-11-05 |
Family
ID=25998937
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11004/36A Expired GB456270A (en) | 1935-04-30 | 1936-04-16 | Improvements in or relating to modulated carrier wave communication systems |
| GB16756/37A Expired GB474021A (en) | 1935-04-30 | 1937-06-16 | Improvements in or relating to multi-channel signal transmission systems |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16756/37A Expired GB474021A (en) | 1935-04-30 | 1937-06-16 | Improvements in or relating to multi-channel signal transmission systems |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2156278A (enrdf_load_stackoverflow) |
| BE (1) | BE415104A (enrdf_load_stackoverflow) |
| DE (1) | DE699830C (enrdf_load_stackoverflow) |
| FR (2) | FR810818A (enrdf_load_stackoverflow) |
| GB (2) | GB456270A (enrdf_load_stackoverflow) |
| NL (1) | NL42529C (enrdf_load_stackoverflow) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE928110C (de) * | 1943-02-12 | 1955-05-23 | Aeg | Vierdraht-Traegerfrequenzuebertragungssystem |
| US2479701A (en) * | 1944-02-07 | 1949-08-23 | William C De Vry | Transmitting system |
| BE459652A (enrdf_load_stackoverflow) * | 1944-05-08 | 1945-09-29 | ||
| GB615922A (en) * | 1945-05-02 | 1949-01-13 | Philips Nv | Improvements in multiplex carrier-wave telephony |
| US2621325A (en) * | 1946-08-20 | 1952-12-09 | Radio Electr Soc Fr | Plural modulation multiplex system |
| US2574326A (en) * | 1947-12-02 | 1951-11-06 | Rca Corp | Generating groups of currents |
| US20060291868A1 (en) * | 1999-12-29 | 2006-12-28 | Forster Energy Llc | Optical communications using multiplexed single sideband transmission and heterodyne detection |
-
0
- NL NL42529D patent/NL42529C/xx active
- BE BE415104D patent/BE415104A/xx unknown
-
1936
- 1936-04-16 GB GB11004/36A patent/GB456270A/en not_active Expired
- 1936-04-25 US US76382A patent/US2156278A/en not_active Expired - Lifetime
- 1936-04-28 DE DE1936D0072613 patent/DE699830C/de not_active Expired
- 1936-04-29 FR FR810818D patent/FR810818A/fr not_active Expired
-
1937
- 1937-06-15 FR FR823061D patent/FR823061A/fr not_active Expired
- 1937-06-16 GB GB16756/37A patent/GB474021A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL42529C (enrdf_load_stackoverflow) | |
| GB474021A (en) | 1937-10-25 |
| DE699830C (de) | 1940-12-07 |
| US2156278A (en) | 1939-05-02 |
| FR823061A (fr) | 1938-01-13 |
| BE415104A (enrdf_load_stackoverflow) | |
| FR810818A (fr) | 1937-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2270385A (en) | Multicarrier transmission system | |
| GB456270A (en) | Improvements in or relating to modulated carrier wave communication systems | |
| US2670404A (en) | Multichannel radioelectric communication system | |
| US1910977A (en) | Wave transmission system | |
| US3089920A (en) | Carrier telephone systems | |
| US2374567A (en) | Multichannel carrier transmission system | |
| US2546994A (en) | Multiplex carrier current telephony | |
| GB550912A (en) | Reduction of cross-talk | |
| GB462436A (en) | Improvements in modulated carrier wave communication systems | |
| GB476925A (en) | Improvements in four-wire systems for carrier wave telephony | |
| US2274535A (en) | Carrier wave system | |
| US2181457A (en) | Carrier wave telephone system | |
| DE922775C (de) | Anordnung fuer Traegerstromuebertragung | |
| US2939917A (en) | Modulating arrangements for carrier wave telephone or like systems | |
| US1504535A (en) | Multiplex transmission channel | |
| US2102472A (en) | Multichannel carrier transmission system | |
| GB1446897A (en) | Frequency multiplex apparatus | |
| GB521340A (en) | Improvements in and relating to electric communication systems | |
| US2528090A (en) | Means for changing the transmission carrier frequencies in multichannel signaling and communication systems | |
| GB514317A (en) | Improvements in or relating to multiplex working in communication systems | |
| GB523069A (en) | Improvements in or relating to carrier-telephony systems | |
| GB575213A (en) | Improvements in or relating to multi-channel signalling systems | |
| US1665673A (en) | Arrangement of carrier channels in multiplex signaling systems | |
| GB440241A (en) | Improvements in or relating to multi-channel electric signalling systems | |
| GB517036A (en) | Multiplex multi-line carrier system |