GB1468064A - Means for reducing effects of differential cutoff - Google Patents

Means for reducing effects of differential cutoff

Info

Publication number
GB1468064A
GB1468064A GB1002374A GB1002374A GB1468064A GB 1468064 A GB1468064 A GB 1468064A GB 1002374 A GB1002374 A GB 1002374A GB 1002374 A GB1002374 A GB 1002374A GB 1468064 A GB1468064 A GB 1468064A
Authority
GB
United Kingdom
Prior art keywords
target
potential
mesh
charge
image
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
GB1002374A
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.)
Tektronix Inc
Original Assignee
Tektronix Inc
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 Tektronix Inc filed Critical Tektronix Inc
Publication of GB1468064A publication Critical patent/GB1468064A/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
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/18—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with image written by a ray or beam on a grid-like charge-accumulating screen, and with a ray or beam passing through and influenced by this screen before striking the luminescent screen, e.g. direct-view storage tube

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

1468064 Image storage tubes TEKTRONIX Inc 6 March 1974 [17 May 1973] 10023/74 Heading HID A charge storage image tube comprises a mesh target 14 with a dielectric coating 12, means e.g. collimating electrodes 46, 48, 50 for uniformly bombarding the target with low velocity electrons from a first cathode 44, writing means for bombarding the target with high velocity electrons from a second cathode 30 to form a positive image thereon, and means for applying a varying potential 68 corresponding to the differential cut-off to the mesh whereby the low velocity electrons are uniformly transmitted through written areas. The potential applied to the mesh comprises a pulse 58 to erase previous charge, a potential 52 sufficient to allow flood electrons to uniformly charge the target and a cut-off voltage at time 62 after which the charge image is written. The potential 68 is then applied during viewing. The waveform may be square, sinusoidal or triangular. A further mesh target may be placed between grid 40 and the target 14.
GB1002374A 1973-05-17 1974-03-06 Means for reducing effects of differential cutoff Expired GB1468064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00361089A US3836811A (en) 1973-05-17 1973-05-17 Means for reducing effects of differential cutoff

Publications (1)

Publication Number Publication Date
GB1468064A true GB1468064A (en) 1977-03-23

Family

ID=23420602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1002374A Expired GB1468064A (en) 1973-05-17 1974-03-06 Means for reducing effects of differential cutoff

Country Status (7)

Country Link
US (1) US3836811A (en)
JP (1) JPS5424635B2 (en)
CA (1) CA1008183A (en)
DE (1) DE2423901C2 (en)
FR (1) FR2230075B1 (en)
GB (1) GB1468064A (en)
NL (1) NL167800C (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1129967A (en) * 1965-08-03 1968-10-09 Marconi Co Ltd Improvements in or relating to direct viewing storage cathode ray tube circuit arrangements
US3426238A (en) * 1966-12-07 1969-02-04 Tektronix Inc Charge image storage method and apparatus
US3470414A (en) * 1968-05-27 1969-09-30 Westinghouse Electric Corp Direct view storage system
US3576457A (en) * 1968-08-23 1971-04-27 Fairchild Camera Instr Co High-resolution direct-view storage tube
US3710173A (en) * 1970-06-17 1973-01-09 Tektronix Inc Direct viewing storage tube having mesh halftone target and nonmesh bistable target
US3710179A (en) * 1971-09-14 1973-01-09 Tektronix Inc Storage tube having transmission target with low differential cutoff

Also Published As

Publication number Publication date
FR2230075B1 (en) 1977-10-14
NL167800C (en) 1982-01-18
NL7403413A (en) 1974-11-19
JPS5424635B2 (en) 1979-08-22
FR2230075A1 (en) 1974-12-13
DE2423901C2 (en) 1983-09-22
CA1008183A (en) 1977-04-05
JPS5019353A (en) 1975-02-28
NL167800B (en) 1981-08-17
US3836811A (en) 1974-09-17
DE2423901A1 (en) 1974-12-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee