GB523069A - Improvements in or relating to carrier-telephony systems - Google Patents

Improvements in or relating to carrier-telephony systems

Info

Publication number
GB523069A
GB523069A GB37465/38A GB3746538A GB523069A GB 523069 A GB523069 A GB 523069A GB 37465/38 A GB37465/38 A GB 37465/38A GB 3746538 A GB3746538 A GB 3746538A GB 523069 A GB523069 A GB 523069A
Authority
GB
United Kingdom
Prior art keywords
carrier
dec
order
relating
telephony 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
GB37465/38A
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.)
Koninklijke Philips NV
Original Assignee
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB523069A publication Critical patent/GB523069A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

523,069. Multiplex transmission. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 23, 1938, No. 37465. Convention date, Dec. 27, 1937. Drawings to Specification. [Class 40 (iv)] In a single side-band multiplex carrier telephone system the low pass filters ordinarily provided are omitted ' and the carrier frequencies are so chosen that the interference effects produced by the third order and first order modulation products respectively of an adjacent channel are of the same order.
GB37465/38A 1937-12-27 1938-12-23 Improvements in or relating to carrier-telephony systems Expired GB523069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE523069X 1937-12-27

Publications (1)

Publication Number Publication Date
GB523069A true GB523069A (en) 1940-07-04

Family

ID=6551850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37465/38A Expired GB523069A (en) 1937-12-27 1938-12-23 Improvements in or relating to carrier-telephony systems

Country Status (2)

Country Link
FR (1) FR848017A (en)
GB (1) GB523069A (en)

Also Published As

Publication number Publication date
FR848017A (en) 1939-10-20

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