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GB427047A - Improvements relating to electrical signalling systems - Google Patents

Improvements relating to electrical signalling systems

Info

Publication number
GB427047A
GB427047A GB3281433A GB3281433A GB427047A GB 427047 A GB427047 A GB 427047A GB 3281433 A GB3281433 A GB 3281433A GB 3281433 A GB3281433 A GB 3281433A GB 427047 A GB427047 A GB 427047A
Authority
GB
United Kingdom
Prior art keywords
wire circuit
signalling systems
effected
wires
pairs
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
GB3281433A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB3281433A priority Critical patent/GB427047A/en
Publication of GB427047A publication Critical patent/GB427047A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

427,047. Multiplex signalling systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and ROSEN, A., 163, Fordwych Road, Cricklewood, both in London. Nov. 23, 1933, No. 32814. [Class 40 (v)] A transmission system in which communication is effected by currents of complex frequency comprises a four-wire circuit consisting of two pairs, the mean axes of which are coincident, no other wire being situated in the space enclosed by the four wires, and communication is effected by one band of frequencies over the four-wire circuit and another separate band over a pair. The four-wire circuit is not subject, and does not give rise, to interference and is suitable for transmission of music which may be by modulated carrier wave. The pairs of wires are terminated by the usual centretapped transformers &c.
GB3281433A 1933-11-23 1933-11-23 Improvements relating to electrical signalling systems Expired GB427047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3281433A GB427047A (en) 1933-11-23 1933-11-23 Improvements relating to electrical signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3281433A GB427047A (en) 1933-11-23 1933-11-23 Improvements relating to electrical signalling systems

Publications (1)

Publication Number Publication Date
GB427047A true GB427047A (en) 1935-04-15

Family

ID=10344398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3281433A Expired GB427047A (en) 1933-11-23 1933-11-23 Improvements relating to electrical signalling systems

Country Status (1)

Country Link
GB (1) GB427047A (en)

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