GB523069A - Improvements in or relating to carrier-telephony systems - Google Patents
Improvements in or relating to carrier-telephony systemsInfo
- Publication number
- GB523069A GB523069A GB37465/38A GB3746538A GB523069A GB 523069 A GB523069 A GB 523069A GB 37465/38 A GB37465/38 A GB 37465/38A GB 3746538 A GB3746538 A GB 3746538A GB 523069 A GB523069 A GB 523069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- dec
- order
- relating
- telephony systems
- 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
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/08—Arrangements for combining channels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
523,069. Multiplex transmission. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 23, 1938, No. 37465. Convention date, Dec. 27, 1937. Drawings to Specification. [Class 40 (iv)] In a single side-band multiplex carrier telephone system the low pass filters ordinarily provided are omitted ' and the carrier frequencies are so chosen that the interference effects produced by the third order and first order modulation products respectively of an adjacent channel are of the same order.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE523069X | 1937-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB523069A true GB523069A (en) | 1940-07-04 |
Family
ID=6551850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37465/38A Expired GB523069A (en) | 1937-12-27 | 1938-12-23 | Improvements in or relating to carrier-telephony systems |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR848017A (en) |
GB (1) | GB523069A (en) |
-
0
- FR FR848017D patent/FR848017A/fr not_active Expired
-
1938
- 1938-12-23 GB GB37465/38A patent/GB523069A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR848017A (en) | 1939-10-20 |
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