GB1459797A - Electronic storage tubes - Google Patents
Electronic storage tubesInfo
- Publication number
- GB1459797A GB1459797A GB5691873A GB5691873A GB1459797A GB 1459797 A GB1459797 A GB 1459797A GB 5691873 A GB5691873 A GB 5691873A GB 5691873 A GB5691873 A GB 5691873A GB 1459797 A GB1459797 A GB 1459797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- volts
- electrode
- target
- insulator
- tube
- 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
- H01J31/58—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
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Abstract
1459797 Cathode-ray storage tubes SONY CORP 7 Dec 1973 [8 Dec 1972] 56918/73 Heading H1D [Also in Division B6] A storage target for use in a tube having an electrical input and output, or in a camera tube, includes a conductive electrode 9 formed on a base 1a-e.g. the tube envelope-a storage material 10, and an electrode 12 in the form of spaced strips. For an electrical input tube, the layer 10 is of insulator, e.g. SiO or SiO 2 , formed as the oxidized surface of the chromium electrode 9, the electrode 11 being of aluminium. The tube includes a scanning electron gun and a beam landing adjusting grid (G 4 , Fig. 4, not shown). To erase the target and prepare it for uniting, the potential V T of electrode 9 is held at 200 volts and that of electrode 12, V P , at 180 volts, whereby scanning the target with the electron beam gives a secondary electron emission ratio greater than unity and raises the insulator surface potential, V S , to 180 volts. To unite upon the target, V P is raised to 220 volts, and the target scanned with the density modulated writing beam, to give V S equal to 180 volts still over the unwritten areas, but 220 volts over the written areas, whereby although V S varies over 40 volts, the potential difference across the insulator 10 does not exceed 20 volts. To read the target, V T is set at - 20 volts and V P at 10 volts, whereby the beam reaching the electrode 12 is modulated by the surface potential of the adjacent regions of insulator. In a modified target, Fig. 7, insulator 10 is of increased depth beneath the electrode 12, and a method of producing this structure by etching, without undue attack on the sidewalls of the depressions in the insulator, is disclosed (see Division B6), in which the insulator 10 is formed of three successive layers of MgF 2 or CaF 2 , of Al 2 O 3 , and of SiO 2 . Reference is also made to a target formed by applying electrodes to opposite surfaces of a thin glass plate. When employed as a camera tube, electrode 9 is transparent, and storage layer 10 is a photoconductor, the incidence of an optical image producing a corresponding pattern of potential V C at the opposite surface of the photoconductor, again to modulate the receipt of a writing beam by the electrode 12; since charging and discharging currents are not employed in the read-out process, the latter may be repeated without image exhaustion.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12319072A JPS561742B2 (en) | 1972-12-08 | 1972-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1459797A true GB1459797A (en) | 1976-12-31 |
Family
ID=14854407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5691873A Expired GB1459797A (en) | 1972-12-08 | 1973-12-07 | Electronic storage tubes |
Country Status (8)
Country | Link |
---|---|
US (1) | US3919587A (en) |
JP (1) | JPS561742B2 (en) |
CA (1) | CA1018284A (en) |
DE (1) | DE2361243A1 (en) |
FR (1) | FR2210007B1 (en) |
GB (1) | GB1459797A (en) |
IT (2) | IT1000821B (en) |
NL (1) | NL7316891A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4704635A (en) * | 1984-12-18 | 1987-11-03 | Sol Nudelman | Large capacity, large area video imaging sensor |
US20050212936A1 (en) | 2004-03-25 | 2005-09-29 | Eastman Kodak Company | Extended dynamic range image sensor with fixed pattern noise reduction |
US20060082670A1 (en) * | 2004-10-14 | 2006-04-20 | Eastman Kodak Company | Interline CCD for still and video photography with extended dynamic range |
US7964840B2 (en) * | 2008-06-19 | 2011-06-21 | Omnivision Technologies, Inc. | High dynamic range image sensor including polarizer and microlens |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1180951A (en) * | 1957-08-08 | 1959-06-10 | Csf | Memory tube |
US3398317A (en) * | 1965-01-12 | 1968-08-20 | Stanford Research Inst | Information storage tube |
US3670198A (en) * | 1969-09-30 | 1972-06-13 | Sprague Electric Co | Solid-state vidicon structure |
US3675134A (en) * | 1971-05-27 | 1972-07-04 | Rca Corp | Method of operating an information storage tube |
-
1972
- 1972-12-08 JP JP12319072A patent/JPS561742B2/ja not_active Expired
-
1973
- 1973-12-07 US US422859A patent/US3919587A/en not_active Expired - Lifetime
- 1973-12-07 GB GB5691873A patent/GB1459797A/en not_active Expired
- 1973-12-07 FR FR7343863A patent/FR2210007B1/fr not_active Expired
- 1973-12-07 CA CA187,640A patent/CA1018284A/en not_active Expired
- 1973-12-08 DE DE2361243A patent/DE2361243A1/en not_active Withdrawn
- 1973-12-10 NL NL7316891A patent/NL7316891A/xx not_active Application Discontinuation
- 1973-12-10 IT IT2963/73A patent/IT1000821B/en active
- 1973-12-27 IT IT32325/73A patent/IT1006683B/en active
Also Published As
Publication number | Publication date |
---|---|
JPS4979774A (en) | 1974-08-01 |
DE2361243A1 (en) | 1974-06-12 |
IT1000821B (en) | 1976-04-10 |
FR2210007B1 (en) | 1978-03-10 |
IT1006683B (en) | 1976-10-20 |
JPS561742B2 (en) | 1981-01-14 |
CA1018284A (en) | 1977-09-27 |
NL7316891A (en) | 1974-06-11 |
US3919587A (en) | 1975-11-11 |
FR2210007A1 (en) | 1974-07-05 |
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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 |