GB635340A - Improvements in and relating to electrical carrier-wave signalling systems - Google Patents
Improvements in and relating to electrical carrier-wave signalling systemsInfo
- Publication number
- GB635340A GB635340A GB25232/45A GB2523245A GB635340A GB 635340 A GB635340 A GB 635340A GB 25232/45 A GB25232/45 A GB 25232/45A GB 2523245 A GB2523245 A GB 2523245A GB 635340 A GB635340 A GB 635340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- electrical carrier
- signalling systems
- channels
- transmitting
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
635,340. Multiplex systems. SUEUR, R. Sept. 28, 1945, No. 25232. Convention date, Oct. 10, 1944. Drawings to Specification. [Class 40 (iv)] A multiplex system comprises means for transmitting a number of narrow band channels spaced 4 kc/s. apart from 12 kc/s. upwards and for transmitting a single broad band audio signal within the range 0-20 kc/s., the narrow channels within the range 12-20 kc/s. not being used when the broad band signal is transmitted. The narrow band channels and the audio signal may be modulated together as a group for radio transmission.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR909337T | 1944-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB635340A true GB635340A (en) | 1950-04-05 |
Family
ID=9407886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25232/45A Expired GB635340A (en) | 1944-10-10 | 1945-09-28 | Improvements in and relating to electrical carrier-wave signalling systems |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR909337A (en) |
GB (1) | GB635340A (en) |
-
1944
- 1944-10-10 FR FR909337D patent/FR909337A/en not_active Expired
-
1945
- 1945-09-28 GB GB25232/45A patent/GB635340A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR909337A (en) | 1946-05-06 |
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