GB674924A - Improvements in electron storage devices with grid control action - Google Patents
Improvements in electron storage devices with grid control actionInfo
- Publication number
- GB674924A GB674924A GB6131/48A GB613148A GB674924A GB 674924 A GB674924 A GB 674924A GB 6131/48 A GB6131/48 A GB 6131/48A GB 613148 A GB613148 A GB 613148A GB 674924 A GB674924 A GB 674924A
- Authority
- GB
- United Kingdom
- Prior art keywords
- target
- electrode
- plate
- perforated
- electrons
- 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
- 229910052751 metal Inorganic materials 0.000 abstract 11
- 239000002184 metal Substances 0.000 abstract 11
- 239000011521 glass Substances 0.000 abstract 4
- 239000010445 mica Substances 0.000 abstract 4
- 229910052618 mica group Inorganic materials 0.000 abstract 4
- 230000004048 modification Effects 0.000 abstract 4
- 238000012986 modification Methods 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 210000003298 dental enamel Anatomy 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 239000003989 dielectric material Substances 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 230000005055 memory storage Effects 0.000 abstract 1
- 230000001846 repelling effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
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
- H01J31/60—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 having means for deflecting, either selectively or sequentially, an electron ray on to separate surface elements of the screen
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/23—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using electrostatic storage on a common layer, e.g. Forrester-Haeff tubes or William tubes
-
- 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
Abstract
674,924. Cathode-ray tubes. RADIO CORPORATION OF AMERICA. Feb. 27, 1948 [Jan. 15, 1947], No. 6131/48. Class 39 (i). An electron discharge device for memory storage comprises a source of electrons, first and second target electrodes, a collector electrode adjacent the first target electrode, and a grid structure for selectively directing electrons, and a grid structure for selectively directing electrons towards one or more elemental areas of the target, wherein the elemental areas are charged to either one of two potentials and whereby the flow of electrons towards the second target is dependent upon the potentials of the elemental areas of the first target. In one form, Fig. 1, the electrons from cathode 21 are accelerated by spiral grid 23, focused by plates 25, 27, and then pass normally through second accelerating apertured plate electrode 29. They then pass through horizontal control grid wires 31, shield electrode 35, vertical control grid wires 37, collector 55, first target 57 comprising a perforated mica sheet 59 backed by a perforated metal signal plate 61, and sheet metal second target 62. The perforated plate electrodes 29-62 are held together as a unit by ceramic or glass tubes or rods 38, 40 passing through their four corners. The rods may be threaded and provided with nuts at either end or if tubes are used insulated bolts may be passed through them, as shown. Insulating spacers 99 fit around the rods or tubes to keep the electrodes in proper spaced relationship. The unitary electrode assembly is carried by rods 30, 32, 34, 36 embedded in the glass base or supported between two mica sheets. There may be as many as four identical electrode structures. The storage elements of the first target are charged individually to collector or cathode potential. If an element is at cathode potential electrons passing through a single open gate in the control grid will be repelled to the collector 55, but if it is at collector potential some electrons strike the dielectric surface and release secondaries which go to the collector 55 while others pass through the aperture 58 and strike the second target 62 which is connected to a suitable indicating output circuit. The signal plate 61 is biased negatively to assist in repelling electrons when the memory element is at cathode potential and also acts to some extent as a shield. In a modification, the collector 55 may be provided with a fine mesh shielding screen, Fig. 4 (not shown). An auxiliary perforated plate shield may be placed against the mica sheet of the first target electrode, Fig. 5 (not shown). It is maintained at a potential between cathode and collector potential and serves to minimize leakage between adjacent storage elements. The first target may be a metal mesh clamped between two perforated metal sheets, Fig. 6 (not shown), and the entire assembly is coated with dielectric secondary emissive material. A shield in the form of a perforated plate may be placed between the first and second target electrodes. In another modification the apertures in the dielectric are conical, or preferably, as shown in Fig. 7, the metal signal plate 61 has conical apertures and has deposited thereon a dielectric material, e.g. an aluminium plate 61 may be anodized'or a metal plate 61 may be covered with silica or with enamel. A perforated negatively biased plate electrode is disposed adjacent to the plate 61. Auxiliary electrodes to properly form the electric fields and to serve as shields may be placed on either or both sides of the first target electrode. In another modification, Fig. 8, flared metal sleeves 74 are inserted in apertures in a metal signal plate 61 and are insulated therefrom by glass or ceramic sleeves 76. A similar construction may be obtained by evaporating metal into the conical apertures of the form of Fig. 7 through a perforated mask. The second target may comprise a perforated metal plate backed by a fluorescent material coated on a mica or glass support, Fig. 9 (not shown). Secondaries released from the fluorescent material are collected by the metal plate. In a further modification, Fig. 10, the first target has an auxiliary negatively biased electrode 80 and the second target is a fine wire 88. Focusing electrodes 82, 84, 86 direct the electrons to the second target. In all forms the electrodes may be flat or cylindrical. The second target electrode may be replaced by one or more electron multipliers within the device. Specification 674,925 is referred to. The Specification as open to inspection under Sect. 91, states that when four sets of electrodes are employed the second accelerating electrode 29, Fig. 1, may be formed of a single sheet bent to form a substantially square enclosure. Additional insulating rods may pass through the perforated plates 29, 35, 55 to space the wires of the control grid networks. This subject-matter does not appear in the accepted Specification.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US722194A US2513743A (en) | 1947-01-15 | 1947-01-15 | Electron storage device with grid control action |
Publications (1)
Publication Number | Publication Date |
---|---|
GB674924A true GB674924A (en) | 1952-07-02 |
Family
ID=24900848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6131/48A Expired GB674924A (en) | 1947-01-15 | 1948-02-27 | Improvements in electron storage devices with grid control action |
Country Status (2)
Country | Link |
---|---|
US (1) | US2513743A (en) |
GB (1) | GB674924A (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666161A (en) * | 1949-12-01 | 1954-01-12 | Rca Corp | Bias generating matrix |
US2558461A (en) * | 1949-12-28 | 1951-06-26 | Rca Corp | Target-area-selection-type tube |
US2646521A (en) * | 1950-03-23 | 1953-07-21 | Rca Corp | Color television picture tube |
US2726328A (en) * | 1950-06-20 | 1955-12-06 | Bell Telephone Labor Inc | Binary storage system |
US2760119A (en) * | 1952-01-15 | 1956-08-21 | Products And Licensing Corp | Mural television screen |
DE957252C (en) * | 1952-01-16 | 1957-01-31 | Ericsson Telefon Ab L M | Electronic message storage tubes with secondary electron emitting electrodes |
US2847610A (en) * | 1952-08-27 | 1958-08-12 | Rca Corp | Direct-view electrical storage tube and erasing system therefor |
US2728873A (en) * | 1953-01-13 | 1955-12-27 | Gen Dynamics Corp | Cathode ray control apparatus |
US2843798A (en) * | 1953-05-29 | 1958-07-15 | Rca Corp | Methods and means for utilizing a direct-view type electrical storage tube |
US2843799A (en) * | 1953-08-14 | 1958-07-15 | Rca Corp | Direct-view electrical storage tube and methods of operating same |
US2867686A (en) * | 1953-11-02 | 1959-01-06 | Hafner Theodore | Electronic storage tubes |
US2824249A (en) * | 1954-02-09 | 1958-02-18 | Hughes Aircraft Co | Storage grid for direct-viewing storage tubes |
NL189343B (en) * | 1954-07-20 | Scharfenbergkupplung Gmbh | MIDDLE BUFFER COUPLING FOR RAIL VEHICLES WITH CABLE COUPLES. | |
US2988668A (en) * | 1954-10-05 | 1961-06-13 | Burroughs Corp | High speed memory |
US3201630A (en) * | 1955-03-30 | 1965-08-17 | Itt | Charge storage sheet with tapered apertures |
NL262236A (en) * | 1960-03-21 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE375269A (en) * | 1929-11-26 | |||
US2172859A (en) * | 1936-05-27 | 1939-09-12 | Hazeltine Corp | Electron tube circuits |
US2348216A (en) * | 1943-02-09 | 1944-05-09 | Rca Corp | Electron discharge device mount spacer |
US2424289A (en) * | 1943-07-30 | 1947-07-22 | Rca Corp | Calculating device |
-
1947
- 1947-01-15 US US722194A patent/US2513743A/en not_active Expired - Lifetime
-
1948
- 1948-02-27 GB GB6131/48A patent/GB674924A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2513743A (en) | 1950-07-04 |
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