GB536963A - Improvements in or relating to multiplex telephone systems - Google Patents

Improvements in or relating to multiplex telephone systems

Info

Publication number
GB536963A
GB536963A GB1921/40A GB192140A GB536963A GB 536963 A GB536963 A GB 536963A GB 1921/40 A GB1921/40 A GB 1921/40A GB 192140 A GB192140 A GB 192140A GB 536963 A GB536963 A GB 536963A
Authority
GB
United Kingdom
Prior art keywords
distributer
distributers
relay
relating
telephone systems
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
GB1921/40A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB536963A publication Critical patent/GB536963A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Audible And Visible Signals (AREA)

Abstract

536,963. Multiple transmission. PHILIPS LAMPS, Ltd. Jan. 31, 1940, No. 1921. Convection date, Feb. 3, 1939. [Class 40 (iv)] In a distributer system, signalling, e.g. for calling or selecting, is effected by suppressing impulses at the distributer frequency which are normally present either from the nature of the system, as when cathode beam distributers are used, or because artificially provided with the aid of a D.C. source when the distributers are mechanical. As shown signals are sent by a relay 12 which puts a paralysing bias on the grid of the channel concerned in the cathode beam distributer and are received by a relay 33 which is normally energized by the receiving pulses and falls back when these are suppressed.
GB1921/40A 1939-02-03 1940-01-31 Improvements in or relating to multiplex telephone systems Expired GB536963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE536963X 1939-02-03

Publications (1)

Publication Number Publication Date
GB536963A true GB536963A (en) 1941-06-03

Family

ID=6557526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1921/40A Expired GB536963A (en) 1939-02-03 1940-01-31 Improvements in or relating to multiplex telephone systems

Country Status (2)

Country Link
US (1) US2263369A (en)
GB (1) GB536963A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438902A (en) * 1943-10-04 1948-04-06 Standard Telephones Cables Ltd Pulse multiplex system employing fixed pulse-time displacement for signaling
US2547001A (en) * 1944-01-26 1951-04-03 Standard Telephones Cables Ltd Drop channel pulse multiplex system

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565102A (en) * 1941-03-15 1951-08-21 Products & Licensing Corp System for connecting a single channel with a plurality of channels in periodical succession
US2406803A (en) * 1941-12-16 1946-09-03 Standard Telephones Cables Ltd High-frequency electrical communication system
US2437027A (en) * 1943-01-12 1948-03-02 John H Homrighous Time division multiplex communication system
FR962120A (en) * 1943-04-07 1950-06-02
US2434697A (en) * 1943-09-28 1948-01-20 Charles H Homrighous Time division multiplex telephone system
BE481274A (en) * 1943-10-11
US2434698A (en) * 1944-02-15 1948-01-20 John H Homrighous Time division multiplex telephone system
US2420374A (en) * 1944-07-01 1947-05-13 Rca Corp Pulse multiplex transmission system
US2472705A (en) * 1944-07-17 1949-06-07 John H Homrighous Time division carrier multiplex telephone system
US2532719A (en) * 1944-10-16 1950-12-05 John H Homrighous Dimensional radio communication system
BE461981A (en) * 1944-12-23
BE477651A (en) * 1945-03-01
BE474049A (en) * 1945-05-14
US2476966A (en) * 1945-10-25 1949-07-26 Paul M Erlandson Radial beam tube assembly
NL69954C (en) * 1946-01-25
CH248975A (en) * 1946-02-04 1947-05-31 Patelhold Patentverwertung Process and device for disguising the individual calls in a multi-channel system.
NL76339C (en) * 1946-02-07
US2492136A (en) * 1946-03-14 1949-12-27 Fed Telecomm Lab Inc Electronic telephone exchange
BE472449A (en) * 1946-04-10
US4396801A (en) * 1946-06-11 1983-08-02 Bell Telephone Laboratories, Incorporated Multiplex communication system employing pulse code modulation
NL78385C (en) * 1946-06-20
BE479963A (en) * 1946-06-22
BE475602A (en) * 1946-08-23
US2492346A (en) * 1946-10-05 1949-12-27 Fed Telecomm Lab Inc Translator
BE478612A (en) * 1947-01-02
US2499844A (en) * 1947-01-16 1950-03-07 Philco Corp Receiver for pulse-position-modulation systems
US2492180A (en) * 1947-04-26 1949-12-27 Fed Telecomm Lab Inc Ringing arrangement for electronic switching systems
US3084222A (en) * 1958-08-11 1963-04-02 Ass Elect Ind Woolwich Ltd Multiplex transmission systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438902A (en) * 1943-10-04 1948-04-06 Standard Telephones Cables Ltd Pulse multiplex system employing fixed pulse-time displacement for signaling
US2547001A (en) * 1944-01-26 1951-04-03 Standard Telephones Cables Ltd Drop channel pulse multiplex system

Also Published As

Publication number Publication date
US2263369A (en) 1941-11-18

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