GB289102A - Improvements in and relating to telephonic and radio-telephonic systems of communication - Google Patents

Improvements in and relating to telephonic and radio-telephonic systems of communication

Info

Publication number
GB289102A
GB289102A GB11947/28A GB1194728A GB289102A GB 289102 A GB289102 A GB 289102A GB 11947/28 A GB11947/28 A GB 11947/28A GB 1194728 A GB1194728 A GB 1194728A GB 289102 A GB289102 A GB 289102A
Authority
GB
United Kingdom
Prior art keywords
cage
telephonic
receiver
local
rotating
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
GB11947/28A
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.)
JULIEN MAURICE LOEB
Original Assignee
JULIEN MAURICE LOEB
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 JULIEN MAURICE LOEB filed Critical JULIEN MAURICE LOEB
Publication of GB289102A publication Critical patent/GB289102A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/04Distributors combined with modulators or demodulators
    • H04J3/045Distributors with CRT

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

289,102. Loeb, J. M. April 23, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Vacuum tubes.-For multiplexing telephone conversations &c. by distributors having a frequency say four times the highest acoustic frequency which it is desired to reproduce, electronic distributors may be used, each comprising a central filament, a grid and plate for each conversation channel and for a synchronizing channel, and a cage of wires carrying threephase currents for creating a rotating magnetic field (say 16,000 rotations per second) which makes the channels effective in turn by directing the electron-flow towards the different plates. The rotating field systems of the transmitter and receiver are supplied by local three-phase sources; lack of synchronism is corrected by mounting the cage at the receiver on a synchronous motor, of which the rotor is connected in the synchronizing channel while the stator is fed from the local three-phase source, so that the cage rotates with a speed equal to the difference of of the speeds of the two rotating fields.
GB11947/28A 1927-04-23 1928-04-23 Improvements in and relating to telephonic and radio-telephonic systems of communication Expired GB289102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR289102X 1927-04-23

Publications (1)

Publication Number Publication Date
GB289102A true GB289102A (en) 1929-02-28

Family

ID=8887555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11947/28A Expired GB289102A (en) 1927-04-23 1928-04-23 Improvements in and relating to telephonic and radio-telephonic systems of communication

Country Status (1)

Country Link
GB (1) GB289102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559644A (en) * 1948-09-18 1951-07-10 Rca Corp Pulse multiplex system
US2579070A (en) * 1945-02-14 1951-12-18 Rca Corp Multiplex communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579070A (en) * 1945-02-14 1951-12-18 Rca Corp Multiplex communication system
US2559644A (en) * 1948-09-18 1951-07-10 Rca Corp Pulse multiplex system

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