GB851810A - Improvements in or relating to amplitude compression and expansion arrangements in communication systems - Google Patents
Improvements in or relating to amplitude compression and expansion arrangements in communication systemsInfo
- Publication number
- GB851810A GB851810A GB2944159A GB2944159A GB851810A GB 851810 A GB851810 A GB 851810A GB 2944159 A GB2944159 A GB 2944159A GB 2944159 A GB2944159 A GB 2944159A GB 851810 A GB851810 A GB 851810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- communication systems
- amplitude compression
- expansion arrangements
- arrangements
- 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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
851,810. Radio transmitting systems. STANDARD TELEPHONES & CABLES Ltd. Aug. 28, 1959, No. 29441/59. Class 40(5). In a compandor system, the modulated signal sidebands are used, by filtering, amplification and rectification, to vary an attenuator 4 in the modulating signal input circuit to the modulator 5 at the transmitter 1, and correspondingly at the receiver 2 the received signal sidebands control a variable attenuator 9 in the output circuit of the demodulator 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2944159A GB851810A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to amplitude compression and expansion arrangements in communication systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2944159A GB851810A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to amplitude compression and expansion arrangements in communication systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB851810A true GB851810A (en) | 1960-10-19 |
Family
ID=10291608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2944159A Expired GB851810A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to amplitude compression and expansion arrangements in communication systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB851810A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2460602A1 (en) * | 1974-12-20 | 1976-06-24 | Siemens Ag | Receiver for radio relay systems - has AGC and monitoring circuit responding to low input voltage |
-
1959
- 1959-08-28 GB GB2944159A patent/GB851810A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2460602A1 (en) * | 1974-12-20 | 1976-06-24 | Siemens Ag | Receiver for radio relay systems - has AGC and monitoring circuit responding to low input voltage |
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