GB1306761A - Direct viewing charge image storage tube - Google Patents
Direct viewing charge image storage tubeInfo
- Publication number
- GB1306761A GB1306761A GB1975171*[A GB1975171A GB1306761A GB 1306761 A GB1306761 A GB 1306761A GB 1975171 A GB1975171 A GB 1975171A GB 1306761 A GB1306761 A GB 1306761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- target
- storage
- phosphor
- targets
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 239000011521 glass Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 1
- 229910001887 tin oxide Inorganic materials 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
- H01J31/10—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
1306761 Cathode ray storage tubes TEKTRONIX Inc 9 June 1971 [17 June 1970] 19751/71 Heading H1D A storage tube comprises a first storage target 10, Fig. 2, in the form of a mesh 28 coated with a highly porous insulating material 30 on which data can be recorded at high speed, a second storage target 10 comprising an electrode 40 and a second storage dielectric 38 capable of bi-stable storage, a high velocity (1 kV.) beam for writing, and at least one low velocity flooding beam. The storage dielectric 30 may be a porous metal oxide such as magnezium or aluminium oxide having less than 10% of the normal bulk density; in one example using magnesium oxide having a density of between 2 and 5% of its normal bulk density, the thickness of the layer is up to 30 microns and allows a writing speed of 300-600 million cm./sec. and a storage time of about one second. The second storage dielectric 12 may be a phosphor which provides a visible output and has a storage time of about one hour; an electrical output may be obtained by scanning with the writing beam. As shown, a mesh electrode 34 may be arranged in front of the storage targets and serves to repel positive ions which might damage the targets, and may also collect secondary electrons. There are four modes of operation, and the three electrodes 34, 28 and 40. are connected to appropriate potentials through respective fourposition switches. For bi-stable storage, electrode 34 is at 150v., electrode 28 at 200v., and electrode 40 at 100v. The writing beam passes through target 10 to impinge on target 12, and electrons from earthed flood guns drive the charged areas of the target up to the potential of electrode 40 and uncharged areas down to earth potential. Foe half-tone storage on target 10, electrode 34 is at 100v., electrode 28 at - 20v., and electrode 40 at 3kv. The writing gun then forms a positive-going charge image on target 10, and flood electrons passing through the target are modulated by the charge image and produce a corresponding display on the phosphor 38. In an image transfer mode of operation electrode 40 is connected to 100v. and electrode 28 is connected through an electronic switch first to - 20v. whilst data is stored on target 10 and secondly to 200v. when the flood electrons transfer the charge image to the second target 12. In the erase mode, both targets are connected to an erase pulse generator which firstly applies positive voltages to the targets to allow them to charge uniformly positive and then restores the targets to their quiescent voltage levels of - 20v. and 100-150v. respectively. In one modified bi-stable target construction (Fig. 3, not shown), the conductive electrode is a mesh, and the phosphor is deposited in the interstices of the mesh. In another modification (Fig. 4, not shown) the glass support plate is etched to provide a plurality of conical glass projections; the whole surface is covered with a conductive layer of tin oxide and with phosphor so that the tips of the projections extend through the phosphor to expose the conductive layer on the tips.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4700570A | 1970-06-17 | 1970-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1306761A true GB1306761A (en) | 1973-02-14 |
Family
ID=21946536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1975171*[A Expired GB1306761A (en) | 1970-06-17 | 1971-06-09 | Direct viewing charge image storage tube |
Country Status (7)
Country | Link |
---|---|
US (1) | US3710173A (en) |
JP (1) | JPS534394B1 (en) |
CA (1) | CA949681A (en) |
DE (1) | DE2129909C2 (en) |
FR (1) | FR2097926A5 (en) |
GB (1) | GB1306761A (en) |
NL (1) | NL7108308A (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3798494A (en) * | 1971-12-08 | 1974-03-19 | Tektronix Inc | Non-storage electron multiplier operation of transmission storage tube |
US3798477A (en) * | 1972-08-03 | 1974-03-19 | Tektronix Inc | Storage tube with target having conductive surface exposed through random cracks in dielectric coating |
US3956662A (en) * | 1973-04-30 | 1976-05-11 | Tektronix, Inc. | Cathode ray storage tube having a target dielectric provided with particulate segments of collector electrode extending therethrough |
US3836811A (en) * | 1973-05-17 | 1974-09-17 | Tektronix Inc | Means for reducing effects of differential cutoff |
US3950669A (en) * | 1974-04-24 | 1976-04-13 | Rca Corporation | Erasing method for storage tube employing raster scan |
NL7503462A (en) * | 1975-03-24 | 1976-09-28 | Philips Nv | TELEVISION RECORDING TUBE. |
US4106937A (en) * | 1976-01-02 | 1978-08-15 | Tektronix, Inc. | Cathode ray storage tube having a target dielectric provided with particulate segments of collector electrode extending therethrough |
US4110659A (en) * | 1976-02-18 | 1978-08-29 | Tektronix, Inc. | Cathode ray tube storage target having increase life |
US4284661A (en) * | 1976-08-02 | 1981-08-18 | Tektronix, Inc. | Process for making bistable storage cathode ray tube |
US4159439A (en) * | 1976-08-02 | 1979-06-26 | Tektronix, Inc. | Bistable storage cathode ray tube |
US4130775A (en) * | 1977-01-17 | 1978-12-19 | Tektronix, Inc. | Charge image charge transfer cathode ray tube having a scan expansion electron lens system and collimation electrode means |
US4142128A (en) * | 1977-04-18 | 1979-02-27 | Tektronix, Inc. | Box-shaped scan expansion lens for cathode ray tube |
US4335328A (en) * | 1979-05-24 | 1982-06-15 | Tektronix, Inc. | Selectively erasable storage target with insulated web collector |
US4254360A (en) * | 1980-04-08 | 1981-03-03 | Tektronix, Inc. | Insulated web collector storage target for a cathode ray tube |
US4801850A (en) * | 1987-07-28 | 1989-01-31 | Xerox Corporation | High brightness vacuum fluorescent display (VFD) devices |
US6979947B2 (en) * | 2002-07-09 | 2005-12-27 | Si Diamond Technology, Inc. | Nanotriode utilizing carbon nanotubes and fibers |
US20080012461A1 (en) * | 2004-11-09 | 2008-01-17 | Nano-Proprietary, Inc. | Carbon nanotube cold cathode |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL261454A (en) * | 1960-02-22 | |||
NL262236A (en) * | 1960-03-21 | |||
NL290399A (en) * | 1962-03-19 | |||
US3213316A (en) * | 1962-12-03 | 1965-10-19 | Westinghouse Electric Corp | Tube with highly porous target |
US3293474A (en) * | 1963-08-01 | 1966-12-20 | Tektronix Inc | Phosphor dielectric storage target for cathode ray tube |
US3432717A (en) * | 1965-02-05 | 1969-03-11 | Hughes Aircraft Co | Moving target visual indicator tube |
US3531675A (en) * | 1967-02-28 | 1970-09-29 | Tektronix Inc | Cathode ray storage tube having a target dielectric with collector electrodes extending therethrough |
-
1970
- 1970-06-17 US US00047005A patent/US3710173A/en not_active Expired - Lifetime
-
1971
- 1971-06-09 GB GB1975171*[A patent/GB1306761A/en not_active Expired
- 1971-06-15 JP JP4290071A patent/JPS534394B1/ja active Pending
- 1971-06-16 FR FR7121835A patent/FR2097926A5/fr not_active Expired
- 1971-06-16 DE DE2129909A patent/DE2129909C2/en not_active Expired
- 1971-06-17 CA CA115,966A patent/CA949681A/en not_active Expired
- 1971-06-17 NL NL7108308A patent/NL7108308A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CA949681A (en) | 1974-06-18 |
FR2097926A5 (en) | 1972-03-03 |
DE2129909A1 (en) | 1972-01-27 |
JPS534394B1 (en) | 1978-02-16 |
DE2129909C2 (en) | 1986-08-28 |
NL7108308A (en) | 1971-12-21 |
US3710173A (en) | 1973-01-09 |
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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 |