GB701704A - Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes - Google Patents

Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes

Info

Publication number
GB701704A
GB701704A GB645651A GB645651A GB701704A GB 701704 A GB701704 A GB 701704A GB 645651 A GB645651 A GB 645651A GB 645651 A GB645651 A GB 645651A GB 701704 A GB701704 A GB 701704A
Authority
GB
United Kingdom
Prior art keywords
photo
cathode
electrode
volts
mesh
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
GB645651A
Inventor
Reginald Sidney Webley
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB645651A priority Critical patent/GB701704A/en
Publication of GB701704A publication Critical patent/GB701704A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/58—Tubes for storage of image or information pattern or for conversion of definition of television or like images, i.e. having electrical input and electrical output

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

701,704. Electron beam apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 17, 1952 [March 17, 1951], No. 6456/51. Class 39(1) An electronic storage tube having a charge storage electrode is arranged so that to perform a writing operation the storage electrode is charged by means of secondary electrons and to perform a reading operation photo-electrons are employed. The storage tube 1 may comprise a mesh electrode 3 coated on one side with insulating elements 4 on which charges are stored, a mesh electrode 5, a photo-cathode 2 and an electron gun 6. The cathode 2 may be at zero potential, the storage electrode 3 at 0.5 volts. the mesh electrode 5 at 3 volts, the wall coating 7 at -10 volts and the gun 6 at -1500 volts. The signals to be stored, for example radar signals, are used to modulate the electron gun 6, the beam from which scans the cathode 2 and causes secondary emission which charges the insulating elements 4 negatively. In reading, a flying light spot on a cathode ray tube 9 is focused on the photo-cathode 2 and causes photo-emission, and the number of photo-electrons which pass through the mesh 3 to the signal electrode 5 is determined by the charges laid down in the elements 4. To remove the charge image on the mesh 3 the cathode 2 may be pulsed negatively during a frame fly-back period and flooded with light so that photo-electrons are released with sufficient energy to drive the elements 4 to a positive potential.
GB645651A 1951-03-17 1951-03-17 Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes Expired GB701704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB645651A GB701704A (en) 1951-03-17 1951-03-17 Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB645651A GB701704A (en) 1951-03-17 1951-03-17 Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes

Publications (1)

Publication Number Publication Date
GB701704A true GB701704A (en) 1953-12-30

Family

ID=9814798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB645651A Expired GB701704A (en) 1951-03-17 1951-03-17 Improvements in or relating to electronic storage tubes and circuit arrangements embodying such tubes

Country Status (1)

Country Link
GB (1) GB701704A (en)

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