GB896544A - Improvements in or relating to signal storage tubes - Google Patents
Improvements in or relating to signal storage tubesInfo
- Publication number
- GB896544A GB896544A GB9844/60A GB984460A GB896544A GB 896544 A GB896544 A GB 896544A GB 9844/60 A GB9844/60 A GB 9844/60A GB 984460 A GB984460 A GB 984460A GB 896544 A GB896544 A GB 896544A
- Authority
- GB
- United Kingdom
- Prior art keywords
- target
- potential
- flood
- metal mesh
- writing
- 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
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)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
896,544. Cathode-ray storage tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Dec. 13, 1960 [March 21, 1960], No. 9844/60. Class 39(1). In a direct-viewing signal storage tube an additional storage target 4 of relatively low capacitance is provided between the usual storage target 3 and the writing and flood guns 6 and 7. A secondary electron collecting electrode 5 is positioned between the target 4 and the writing and flood guns. In operation the target 4 stores, under bombardment by the writing beam, a positive charge image for a very short time. The dielectric layer of the target 4 is raised to a positive potential of only a few volts thus enabling a very high writing speed. The electrons from the flood beam which pass through the target 4 at the areas bombarded by the writing beam impinge on the fluorescent screen 2 to display an image thereon and also strike the target 3 at corresponding areas, causing these areas to rise in potential by secondary emission to the potential of the metal mesh 31 of the target 3. The bombarded areas of the target 3 are then stabilized at the potential of the metal mesh 31 under the continuing bombardment of the electrons of the flood beam which continue to pass through the target 3 to the fluorescent screen. The stored image may be erased by reducing the potential of the metal mesh 31 to zero. In a storage tube adapted for half-tone operation, e.g. for television display, a further secondary electron collecting electrode is disposed between the storage electrodes 3 and 4. Flood electrons record a positive charge image on the target 3 corresponding to that provided on the target 4 by the writing beam. When the potential of the metal mesh 31 of target 3 is reduced to zero, flood electrons are cut off from the fluorescent screen, except at the positively charged areas of target 3. The fluorescent screen is held at a low potential until the potential applied to the metal mesh 31 is set to zero.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL262236D NL262236A (en) | 1960-03-21 | ||
GB9844/60A GB896544A (en) | 1960-03-21 | 1960-03-21 | Improvements in or relating to signal storage tubes |
US90667A US3165664A (en) | 1960-03-21 | 1961-02-21 | Signal storage tubes utilizing high and low capacitance storage electrodes |
CH320561A CH391120A (en) | 1960-03-21 | 1961-03-17 | Device comprising a direct-reading storage tube |
DEE20790A DE1208418B (en) | 1960-03-21 | 1961-03-20 | Direct imaging signal storage tubes |
FR856372A FR1284424A (en) | 1960-03-21 | 1961-03-20 | Tubes for signal storage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9844/60A GB896544A (en) | 1960-03-21 | 1960-03-21 | Improvements in or relating to signal storage tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB896544A true GB896544A (en) | 1962-05-16 |
Family
ID=9879855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9844/60A Expired GB896544A (en) | 1960-03-21 | 1960-03-21 | Improvements in or relating to signal storage tubes |
Country Status (6)
Country | Link |
---|---|
US (1) | US3165664A (en) |
CH (1) | CH391120A (en) |
DE (1) | DE1208418B (en) |
FR (1) | FR1284424A (en) |
GB (1) | GB896544A (en) |
NL (1) | NL262236A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3404308A (en) * | 1961-12-04 | 1968-10-01 | Fairchild Camera Instr Co | Cathode-ray signal-translating device |
US3432717A (en) * | 1965-02-05 | 1969-03-11 | Hughes Aircraft Co | Moving target visual indicator tube |
US3710173A (en) * | 1970-06-17 | 1973-01-09 | Tektronix Inc | Direct viewing storage tube having mesh halftone target and nonmesh bistable target |
US3975656A (en) * | 1971-04-29 | 1976-08-17 | Westinghouse Electric Corporation | Direct view storage tube |
US3710179A (en) * | 1971-09-14 | 1973-01-09 | Tektronix Inc | Storage tube having transmission target with low differential cutoff |
US3753129A (en) * | 1972-01-24 | 1973-08-14 | Tektronix Inc | Stabilization of prepare voltage of transmission storage target |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2513743A (en) * | 1947-01-15 | 1950-07-04 | Rca Corp | Electron storage device with grid control action |
US2798185A (en) * | 1954-03-09 | 1957-07-02 | Hughes Aircraft Co | Direct-viewing storage tube |
US2879442A (en) * | 1956-09-12 | 1959-03-24 | Bell Telephone Labor Inc | Direct view storage tube |
-
0
- NL NL262236D patent/NL262236A/xx unknown
-
1960
- 1960-03-21 GB GB9844/60A patent/GB896544A/en not_active Expired
-
1961
- 1961-02-21 US US90667A patent/US3165664A/en not_active Expired - Lifetime
- 1961-03-17 CH CH320561A patent/CH391120A/en unknown
- 1961-03-20 DE DEE20790A patent/DE1208418B/en active Pending
- 1961-03-20 FR FR856372A patent/FR1284424A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL262236A (en) | |
US3165664A (en) | 1965-01-12 |
FR1284424A (en) | 1962-02-09 |
DE1208418B (en) | 1966-01-05 |
CH391120A (en) | 1965-04-30 |
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