Patent EP0748135A2 successfully refreshed from Google Patents.
Patent US3919587A successfully refreshed from Google Patents.
US3919587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic storage tube
Assignee: Sony Corp
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Filing: 1973-12-07
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Granted: 1975-11-11
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Expires: 1993-12-07
Abstract
Abstract An electronic storage tube having a target which is composed of an insulating layer having an electrode on each surface thereof. One of the electrodes is overlaid on one of the surfaces of the insulating layer in a pattern of stripes or cross-stripes and the exposed areas of the insulating layer are scanned by electron beams to establish a storage charge pattern. Different potentials are applied to the two electrodes to cause them to operate in a wide dynamic range.
Inventors
- 👤 Hiroki Sato
- 👤 Toseki Saito
- 👤 Koji Hirano
- 👤 Hiroh Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:23
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/58; H01J31/60
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
128 words
A storage tube comprising: A. a target comprising: 1. a first conductive layer, 2. an insulating layer thereon, and 3. a second conductive layer, said second conductive layer comprising a pattern of apertures through which said insulating layer is directly exposed; the insulating layer being thinner at regions corresponding to each of said apertures than at regions covered by solid portions of said second conductive layer; B. an electron source to direct electrons at said second conductive layer and the exposed portions of said insulator layer; and C. means to apply different potentials to said first and second conductive layers to establish, selectively, conditions for recording a charge pattern of electrons from said source on said insulating layer and for reading said pattern and for erasing said pattern.
Claim 2
Dependent Claim
128 words
A storage tube comprising: A. a target comprising: 1. a first conductive layer, 2. an insulating layer thereon, and 3. a second conductive layer, said second conductive layer comprising a pattern of apertures through which said insulating layer is directly exposed; the insulating layer being thinner at regions corresponding to each of said apertures than at regions covered by solid portions of said second conductive layer; B. an electron source to direct electrons at said second conductive layer and the exposed portions of said insulator layer; and C. means to apply different potentials to said first and second conductive layers to establish, selectively, conditions for recording a charge pattern of electrons from said source on said insulating layer and for reading said pattern and for erasing said pattern.
Claim 3
Dependent Claim
5 words
an insulating layer thereon, and
Claim 4
Dependent Claim
5 words
an insulating layer thereon, and
Claim 5
Dependent Claim
37 words
The storage tube of claim 1 in which said insulating layer comprises a plurality of layers of insulating material responsive to different etching materials whereby selected areas of said insulating layer may be etched to controlled depths.
Claim 6
Independent Claim
176 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method coMprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first and second potentials having a value sufficient to cause secondary electron emission from said storage area when scanned by said electron beam but the potential difference therebetween being less than the breakdown voltage of said storage material, to make said storage area substantially the same potential; applying third and fourth different potentials to said first and second electrodes, respectively, to establish a charge pattern on said storage area; and applying fifth and sixth potentials to said first and second electrodes, respectively, to detect said pattern.
Claim 7
Independent Claim
176 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method coMprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first and second potentials having a value sufficient to cause secondary electron emission from said storage area when scanned by said electron beam but the potential difference therebetween being less than the breakdown voltage of said storage material, to make said storage area substantially the same potential; applying third and fourth different potentials to said first and second electrodes, respectively, to establish a charge pattern on said storage area; and applying fifth and sixth potentials to said first and second electrodes, respectively, to detect said pattern.
Claim 8
Dependent Claim
108 words
a second conductive layer, said second conductive layer comprising a pattern of apertures through which said insulating layer is directly exposed; the insulating layer being thinner at regions corresponding to each of said apertures than at regions covered by solid portions of said second conductive layer; B. an electron source to direct electrons at said second conductive layer and the exposed portions of said insulator layer; and C. means to apply different potentials to said first and second conductive layers to establish, selectively, conditions for recording a charge pattern of electrons from said source on said insulating layer and for reading said pattern and for erasing said pattern.
Claim 9
Dependent Claim
108 words
a second conductive layer, said second conductive layer comprising a pattern of apertures through which said insulating layer is directly exposed; the insulating layer being thinner at regions corresponding to each of said apertures than at regions covered by solid portions of said second conductive layer; B. an electron source to direct electrons at said second conductive layer and the exposed portions of said insulator layer; and C. means to apply different potentials to said first and second conductive layers to establish, selectively, conditions for recording a charge pattern of electrons from said source on said insulating layer and for reading said pattern and for erasing said pattern.
Claim 10
Dependent Claim
24 words
A method of storing an image on a target according to claim 3 wherein a reference potential is applied to said electron emitting means.
Claim 11
Dependent Claim
34 words
A method of storing an image on a target according to claim 3 wherein said first potential is higher than said second potential to provide a potential difference between said surfaces of the material.
Claim 12
Dependent Claim
35 words
A method of storing an image on a target according to claim 4 wherein said third and fourth potentials are sufficiently higher than said reference potential to cause secondary electron emission from said storage area.
Claim 13
Dependent Claim
23 words
A method of storing an image on a target according to claim 6 wherein said fourth potential is higher than said third potential.
Claim 14
Dependent Claim
23 words
A method of storing an image on a target according to claim 4 wherein said fifth potential is lower than said reference potential.
Claim 15
Dependent Claim
23 words
A method of storing an image on a target according to claim 8 wherein said sixth potential is higher than said reference potential.
Claim 16
Dependent Claim
27 words
A method of storing an image on a target according to claim 3 wherein said storage material is a photoconductive material and said first electrode is transparent.
Claim 17
Dependent Claim
21 words
A method of storing an image on a target according to claim 10 wherein said charge pattern depends on incident light.
Claim 18
Independent Claim
181 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first potential being greater than the second potential, to make said storage area substantially the same potential when scanned by said electron beam; applying third and fourth potentials to said first and second electrodes, respectively, the fourth potential being greater than the third potential and being of sufficient value to cause secondary emission from said storage area when scanned by said electron beam so as to establish a charge pattern on said storage area; and applying fifth and sixth potentials to said first and second electrodes, respectively, to detect said pattern.
Claim 19
Independent Claim
181 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first potential being greater than the second potential, to make said storage area substantially the same potential when scanned by said electron beam; applying third and fourth potentials to said first and second electrodes, respectively, the fourth potential being greater than the third potential and being of sufficient value to cause secondary emission from said storage area when scanned by said electron beam so as to establish a charge pattern on said storage area; and applying fifth and sixth potentials to said first and second electrodes, respectively, to detect said pattern.
Claim 20
Dependent Claim
37 words
A method of storing an image in a storage tube in accordance with claim 12 wherein said established charge pattern has a potential distribution within a range defined by the difference between said second and fourth potentials.
Claim 21
Independent Claim
173 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second different voltage potentials to said first and second electrodes, respectively, to make said storage area substantially the same potential when scanned by said electron beam; applyIng third and fourth different potentials to said first and second electrodes, respectively, so as to establish a charge pattern on said storage area; and applying fifth and sixth different potentials to said first and second electrodes, respectively, the difference between said fifth and sixth potentials being at least as great as the range of the potential distribution corresponding to said charge pattern on said storage area.
Claim 22
Independent Claim
173 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second different voltage potentials to said first and second electrodes, respectively, to make said storage area substantially the same potential when scanned by said electron beam; applyIng third and fourth different potentials to said first and second electrodes, respectively, so as to establish a charge pattern on said storage area; and applying fifth and sixth different potentials to said first and second electrodes, respectively, the difference between said fifth and sixth potentials being at least as great as the range of the potential distribution corresponding to said charge pattern on said storage area.
Claim 23
Independent Claim
250 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first potential being greater than the second potential and having a value sufficient to cause secondary electron emission from said storage area when scanned by said electron beam, but the difference between said first and second potentials being less than the breakdown voltage of said storage material, to make said storage area substantially the same potential; applying third and fourth potentials to said first and second electrodes, respectively, the fourth potential being greater than the third potential and being of sufficient value to cause secondary emission from said storage area when scanned by said electron beam so as to establish a charge pattern on said storage area having a potential distribution within a range defined by the difference between said second and fourth potentials; and applying fifth and sixth potentials to said first and second electrodes, respectively, the difference between said fifth and sixth potentials being at least as great as said range of potential distribution on said storage area.
Claim 24
Independent Claim
250 words
A method of storing an image in a storage tube comprising electron emitting means and a target including a storage material having first and second surfaces, a first electrode provided on said first surface of the storage material, and a second electrode partially provided on said second surface of the storage material, said second surface having a storage area to be scanned by an electron beam from said electron emitting means, said method comprising the steps of: applying first and second potentials to said first and second electrodes, respectively, the first potential being greater than the second potential and having a value sufficient to cause secondary electron emission from said storage area when scanned by said electron beam, but the difference between said first and second potentials being less than the breakdown voltage of said storage material, to make said storage area substantially the same potential; applying third and fourth potentials to said first and second electrodes, respectively, the fourth potential being greater than the third potential and being of sufficient value to cause secondary emission from said storage area when scanned by said electron beam so as to establish a charge pattern on said storage area having a potential distribution within a range defined by the difference between said second and fourth potentials; and applying fifth and sixth potentials to said first and second electrodes, respectively, the difference between said fifth and sixth potentials being at least as great as said range of potential distribution on said storage area.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |