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 systems

Info

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
Application number
GB2944159A
Inventor
Charles Thomas Scully
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2944159A priority Critical patent/GB851810A/en
Publication of GB851810A publication Critical patent/GB851810A/en
Expired legal-status Critical Current

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.
GB2944159A 1959-08-28 1959-08-28 Improvements in or relating to amplitude compression and expansion arrangements in communication systems Expired GB851810A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
GB704221A (en) Improvements in or relating to radio transmission systems for stereophonic signals and transmitters and receivers for use therein
GB998935A (en) Fm multichannel radio link repeater station of the channel blanking and inserting type
ES344425A1 (en) Transmission system
GB1205728A (en) Signal-transmission system
GB976235A (en) Improvements in or relating to transmitting systems for amplitude-modulated oscillations
GB797696A (en) Improvements in or relating to single-sideband radio transmission systems
GB784663A (en) Improvements in or relating to single-sideband radio transmission systems
GB1011706A (en) Improvements in colour television transmitters
ES285930A1 (en) A device for emission and receipt of video signals (Machine-translation by Google Translate, not legally binding)
GB851810A (en) Improvements in or relating to amplitude compression and expansion arrangements in communication systems
GB642097A (en) Improvements in or relating to signal transmission systems
GB883177A (en) Improvements in single-sideband speech-transmission systems
GB661554A (en) High frequency pre-emphasis for pulse code modulation
GB974455A (en) Compandor
GB929025A (en) Improvements in or relating to signal transmission systems
GB775845A (en) Improvements in or relating to frequency or phase modulated signal transmission relay stations
GB989767A (en) Improvements in or relating to apparatus for transmitting and receiving signals by modulated oscillations of constant amplitude
GB1104030A (en) Electrical signal transmission systems utilising angular modulation
GB721346A (en) Multichannel carrier telephone systems
GB1006285A (en) Feedback-controlled single-sideband generator
GB1060173A (en) Frequency diversity transmitting system
GB1032848A (en) Improvements in or relating to transmitting arrangements for the transmission of modulated oscillations
GB952033A (en) Improvements in transmission systems and transmitters and receivers therefor
GB968482A (en) Improvements in or relating to volume expansion circuit arrangements
GB851103A (en) Improvements in or relating to modulators for electric carrier communication systems