GB520448A - Multiplex high frequency signal transmission systems - Google Patents

Multiplex high frequency signal transmission systems

Info

Publication number
GB520448A
GB520448A GB30529/38A GB3052938A GB520448A GB 520448 A GB520448 A GB 520448A GB 30529/38 A GB30529/38 A GB 30529/38A GB 3052938 A GB3052938 A GB 3052938A GB 520448 A GB520448 A GB 520448A
Authority
GB
United Kingdom
Prior art keywords
high frequency
signal transmission
frequency signal
transmission systems
multiplex high
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
GB30529/38A
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
Publication of GB520448A publication Critical patent/GB520448A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/10—Distributors
    • H04L13/12—Non-mechanical distributors, e.g. relay distributors
    • H04L13/14—Electronic distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

520,448. Phase changing. STANDARD TELEPHONES & CABLES, Ltd. Oct. 21, 1938, No. 30529. Convention date, Oct. 30, 1937. [Class 38 (ii)] [Also in Group XL] In an eight-channel signalling system, 10 K.C. current is supplied to a network from the points Ph1. Ph8 of which currents are derived of the same frequency but different phases. Each current is normally displaced 45 degrees from its neighbours, but the exact phase, except in the case of Ph1 and Ph5 can be adjusted by means of a tuned circuit CA without affecting the other currents.
GB30529/38A 1937-10-30 1938-10-21 Multiplex high frequency signal transmission systems Expired GB520448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR520448X 1937-10-30

Publications (1)

Publication Number Publication Date
GB520448A true GB520448A (en) 1940-04-24

Family

ID=8916728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30529/38A Expired GB520448A (en) 1937-10-30 1938-10-21 Multiplex high frequency signal transmission systems

Country Status (1)

Country Link
GB (1) GB520448A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529564A (en) * 1946-09-17 1950-11-14 Rca Corp Pulse multiplex receiving system
US2577355A (en) * 1944-12-09 1951-12-04 Bell Telephone Labor Inc Pulse forming and shaping circuits
DE971784C (en) * 1942-12-01 1959-03-26 Telefunken Gmbh Circuit arrangement for a receiving or intermediate station in the case of alternating multiple transmission by means of phase-modulated pulses
DE973863C (en) * 1944-01-26 1960-06-30 Int Standard Electric Corp Multi-channel communication system with time selection, in which one or more branch stations are arranged between two terminals
US11427908B2 (en) 2018-01-31 2022-08-30 Lam Research Corporation Manifold valve for multiple precursors

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971784C (en) * 1942-12-01 1959-03-26 Telefunken Gmbh Circuit arrangement for a receiving or intermediate station in the case of alternating multiple transmission by means of phase-modulated pulses
DE973863C (en) * 1944-01-26 1960-06-30 Int Standard Electric Corp Multi-channel communication system with time selection, in which one or more branch stations are arranged between two terminals
US2577355A (en) * 1944-12-09 1951-12-04 Bell Telephone Labor Inc Pulse forming and shaping circuits
US2529564A (en) * 1946-09-17 1950-11-14 Rca Corp Pulse multiplex receiving system
US11427908B2 (en) 2018-01-31 2022-08-30 Lam Research Corporation Manifold valve for multiple precursors
US11859282B2 (en) 2018-01-31 2024-01-02 Lam Research Corporation Manifold valve for controlling multiple gases

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