GB587498A - Improvements in electrical carrier-wave systems - Google Patents

Improvements in electrical carrier-wave systems

Info

Publication number
GB587498A
GB587498A GB2175744A GB2175744A GB587498A GB 587498 A GB587498 A GB 587498A GB 2175744 A GB2175744 A GB 2175744A GB 2175744 A GB2175744 A GB 2175744A GB 587498 A GB587498 A GB 587498A
Authority
GB
United Kingdom
Prior art keywords
modulated
carrier
waves
link
signals
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
GB2175744A
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2175744A priority Critical patent/GB587498A/en
Publication of GB587498A publication Critical patent/GB587498A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

587,498. Wireless signalling. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C: Nov. 6, 1944, No. 21757. [Class 40 (v)] A carrier-wave relay system adapted to transmit signals covering a wide band of frequencies, such as television signals, comprises a number of link stations, arranged so that at least one of the link stations transmits positively modulated waves, and at least one other link station transmits negatively modulated waves. A carrier-wave positively -modulated by a television signal, Fig. 2 (a), falls to a minimum at the crests s of the synchronizing signals and rises to a maximum at the highest light intensity h, while a negatively modulated carrier, Fig. 2 (b), has its maximum at the crests s of the synchronizing signals and falls to a minimum for the highest light intensity h. Preferably, successive link stations transmit waves modulated in opposite senses.
GB2175744A 1944-11-06 1944-11-06 Improvements in electrical carrier-wave systems Expired GB587498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2175744A GB587498A (en) 1944-11-06 1944-11-06 Improvements in electrical carrier-wave systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2175744A GB587498A (en) 1944-11-06 1944-11-06 Improvements in electrical carrier-wave systems

Publications (1)

Publication Number Publication Date
GB587498A true GB587498A (en) 1947-04-28

Family

ID=10168270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2175744A Expired GB587498A (en) 1944-11-06 1944-11-06 Improvements in electrical carrier-wave systems

Country Status (1)

Country Link
GB (1) GB587498A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1160000B (en) * 1954-01-12 1963-12-27 Siemens Ag Television transmission system with carrier and single sideband transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1160000B (en) * 1954-01-12 1963-12-27 Siemens Ag Television transmission system with carrier and single sideband transmission

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