Patent US4603356A successfully refreshed from Google Patents.
US4603356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging system with light valve and photodetector
Assignee: Energy Conversion Devices Inc
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Filing: 1984-03-19
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Granted: 1986-07-29
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Expires: 2004-03-19
Abstract
Abstract Disclosed is an image detection system having a photodetector, e.g. a photovoltaic cell, a photoconductor sheet, and a means, e.g., a liquid crystal light valve or an electrochromic light valve, matrix light valve having a plurality of individually addressable light valve cells. The image detection system also has means to identify the signal generated by the photodetector with the individual light cell switched to a light transmissive mode. Also disclosed is a method of detecting and updating an image using the image detection system.
Inventors
- 👤 Richard D. Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:15
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/70; H04N25/76; H04N25/71; H04N25/713
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
68 words
Image detection means comprising: (a) photodetector means for generating a signal responsive to light incident thereon; and (b) matrix light valve means having a plurality of individually addressable, volatile, light valve cells, the matrix light valve means being optically and operatively in series with and between the incident light and the photodetector means, electrically insulated from the photodetector means, and having a higher resolution then the photodetector means.
Claim 2
Dependent Claim
68 words
Image detection means comprising: (a) photodetector means for generating a signal responsive to light incident thereon; and (b) matrix light valve means having a plurality of individually addressable, volatile, light valve cells, the matrix light valve means being optically and operatively in series with and between the incident light and the photodetector means, electrically insulated from the photodetector means, and having a higher resolution then the photodetector means.
Claim 3
Dependent Claim
23 words
The image detection means of claim 1 wherein the photodetector means comprises a photovoltaic cell generating a voltage signal when exposed to light.
Claim 4
Dependent Claim
14 words
The image detection means of claim 1 wherein the photodetector means comprises a photoconductor.
Claim 5
Dependent Claim
20 words
The image detection means of claim 1 wherein the matrix light valve means is a liquid crystal light valve means.
Claim 6
Dependent Claim
19 words
The image detection means of claim 1 wherein the matrix light valve means is an electrochromic light valve means.
Claim 7
Dependent Claim
25 words
The image detection means of claim 1 further comprising means for encoding the photodetector means signal versus the individually addressable, volatile light valve cell address.
Claim 8
Dependent Claim
15 words
The image detection means of claim 6 further comprising means for decoding the encoded image.
Claim 9
Dependent Claim
23 words
The image detection means of claim 7 further comprising means for switching the image detection means between image detection and image display modes.
Claim 10
Independent Claim
136 words
A method of detecting an image with an image detection means comprising photodetector means and light valve means, the light valve means being between the image and the photodetector means, said method comprising the steps of: (a) forming the image on matrix light valve means formed of a plurality of individually addressable, volatile, light valve cells; (b) maintaining said individually addressable light valve cells in a non-light transmissive state; (c) sequentially switching an individual light valve cell from a non-transmissive to a transmissive state whereby to permit generation of a signal responsive to the transmitted light; encoding the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a transmissive state to a non-transmissive state; and (d) thereafter repeating step (c) at a subsequent individual light valve cell.
Claim 11
Independent Claim
136 words
A method of detecting an image with an image detection means comprising photodetector means and light valve means, the light valve means being between the image and the photodetector means, said method comprising the steps of: (a) forming the image on matrix light valve means formed of a plurality of individually addressable, volatile, light valve cells; (b) maintaining said individually addressable light valve cells in a non-light transmissive state; (c) sequentially switching an individual light valve cell from a non-transmissive to a transmissive state whereby to permit generation of a signal responsive to the transmitted light; encoding the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a transmissive state to a non-transmissive state; and (d) thereafter repeating step (c) at a subsequent individual light valve cell.
Claim 12
Dependent Claim
20 words
The method of claim 9 wherein the photodetector is a photovoltaic cell and the signal generated is a voltage signal.
Claim 13
Dependent Claim
11 words
The method of claim 9 wherein the photodetector is a photoconductor.
Claim 14
Dependent Claim
18 words
The method of claim 9 wherein the matrix light valve means has a higher resolution than the photodetector.
Claim 15
Dependent Claim
20 words
The method of claim 9 comprising periodically switching said matrix light valve means and photodetector means to a display means.
Claim 16
Dependent Claim
55 words
The method of claim 9 comprising switching said matrix light valve means and photodetector means to a display means, switching said matrix display means to a matrix light valve means and photodetector means, inputting an image, and switching said matrix light valve means and photodetector means to a matrix display means displaying said inputted image.
Claim 17
Dependent Claim
18 words
The method of claim 9 wherein the matrix light valve means in a liquid crystal light valve means.
Claim 18
Dependent Claim
17 words
The method of claim 9 wherein the matrix light valve means in an electrochromic light valve means.
Claim 19
Dependent Claim
77 words
An electronic photographic system comprising: (a) image focusing means; (b) image detection means comprising; (i) photodetector means generating a signal responsive to incident light thereon; and (ii) light valve means having a plurality of individually addressable, volatile light valve cells optically and operatively in series with and between the focused image and the photodetector means, and having a higher resolution then the photodetector means; and (c) means for storing the signal versus the light valve cell address.
Claim 20
Dependent Claim
77 words
An electronic photographic system comprising: (a) image focusing means; (b) image detection means comprising; (i) photodetector means generating a signal responsive to incident light thereon; and (ii) light valve means having a plurality of individually addressable, volatile light valve cells optically and operatively in series with and between the focused image and the photodetector means, and having a higher resolution then the photodetector means; and (c) means for storing the signal versus the light valve cell address.
Claim 21
Dependent Claim
23 words
The electronic photographic systems of claim 17 wherein the photodetector means comprises a photovoltaic cell generating a voltage signal when exposed to light.
Claim 22
Dependent Claim
14 words
The electronic photographic system of claim 17 wherein the photodetector means comprises a photoconductor.
Claim 23
Dependent Claim
19 words
The electronic photographic system of claim 17 wherein the light valve means is a liquid crystal light valve means.
Claim 24
Dependent Claim
18 words
The electronic photographic system of claim 17 wherein the light valve means is an electrochromic light valve means.
Claim 25
Independent Claim
150 words
A method of electronic photography comprising the steps of: (a) bringing an image to focus on an image detection means comprising; (1) a signal responsive to incident light thereon; and (2) light valve means having a plurality of individually addressable, volatile, light valve cells optically and operatively in series with and between the focused image and the photodetector means and having a higher resolution then the photodetector means; (b) maintaining the individually addressable light valve cells in a non-transmissive state; (c) sequentially switching an individual light valve cell from a non-transmissive state to a transmissive state whereby to permit generation of a signal responsive to the transmitted light; encoding and storing the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a transmissive state to a non-transmissive state; ;and (d) thereafter repeating step (c) at a subsequent individual light valve cell.
Claim 26
Independent Claim
150 words
A method of electronic photography comprising the steps of: (a) bringing an image to focus on an image detection means comprising; (1) a signal responsive to incident light thereon; and (2) light valve means having a plurality of individually addressable, volatile, light valve cells optically and operatively in series with and between the focused image and the photodetector means and having a higher resolution then the photodetector means; (b) maintaining the individually addressable light valve cells in a non-transmissive state; (c) sequentially switching an individual light valve cell from a non-transmissive state to a transmissive state whereby to permit generation of a signal responsive to the transmitted light; encoding and storing the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a transmissive state to a non-transmissive state; ;and (d) thereafter repeating step (c) at a subsequent individual light valve cell.
Claim 27
Dependent Claim
16 words
The method of claim 22 comprising scanning the image detection means in a still photographic process.
Claim 28
Dependent Claim
25 words
The method of claim 22 comprising scanning the image detection means, and thereafter again scanning the image detection means in a motion picture photographic process.
Claim 29
Dependent Claim
20 words
The method of claim 22 wherein the photodetector is a photovoltaic cell and the signal generated in a voltage signal.
Claim 30
Dependent Claim
11 words
The method of claim 22 wherein the photodetector is a photoconductor.
Claim 31
Dependent Claim
17 words
The method of claim 22 wherein the light valve means is a liquid crystal light valve means.
Claim 32
Dependent Claim
16 words
The method of claim 22 wherein the light valve means is an electrochromic light valve means.
Claim 33
Dependent Claim
98 words
A data entry and display system comprising: (a) photodetector means for generating a signal responsive to light incident thereon (b) matrix light valve means having a plurality of individually addressable cells, the individual cells being switchable between (1) a light valve mode of operation having light transmitting and light non-transmitting states; and (2) a display mode of operation; said matrix light valve means being optically and operatively between the photodetector means and an incident light, and having a higher resolution then the photodetector means (c) means for encoding, storing, and decoding the signal versus the individual cell address.
Claim 34
Dependent Claim
98 words
A data entry and display system comprising: (a) photodetector means for generating a signal responsive to light incident thereon (b) matrix light valve means having a plurality of individually addressable cells, the individual cells being switchable between (1) a light valve mode of operation having light transmitting and light non-transmitting states; and (2) a display mode of operation; said matrix light valve means being optically and operatively between the photodetector means and an incident light, and having a higher resolution then the photodetector means (c) means for encoding, storing, and decoding the signal versus the individual cell address.
Claim 35
Dependent Claim
25 words
The data entry and display system of claim 29 wherein the phnotodetector means comprises a photovoltaic cell generating a voltage signal when exposed to light.
Claim 36
Dependent Claim
16 words
The data entry and display system of claim 29 wherein the photodetector means comprises a photoconductor.
Claim 37
Dependent Claim
23 words
The data entry and display system of claim 29 wherein the individual cells of the matrix light valve means are liquid crystal cells.
Claim 38
Dependent Claim
22 words
The data entry and display system of claim 32 wherein the individual cells are switchable between light transmissive and light dispersive modes.
Claim 39
Dependent Claim
22 words
The data entry and display system of claim 29 wherein the individual cells of the matrix light valve means are electrochromic cells.
Claim 40
Dependent Claim
22 words
The data entry and display system of claim 34 wherein the individual cells are switchable between light transmissive and light blocking modes.
Claim 41
Independent Claim
190 words
A method of data entry and display with (1) an image detection means comprising photodetector means and matrix light valve means, the light valve means being between the image and the photodetector means and comprising a plurality of individually addressable cells, said cells being switchable between a data entry mode having light transmissive and non-light transmissive modes, and a data display means, and (2) encoding, storage, and decoding means, which method comprises the steps of: (a) forming the image on the matrix light valve means in a data entry mode; (b) maintaining the individually addressable cells in a non-light transmissive state; (c) sequentially switching an individual cell from a non-light transmissive state to a light transmissive state whereby to permit generation of a signal by the photodetector means responsive to incident light thereon; encoding the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a light transmissive state to a non-light transmissive state; (d) thereafter repeating step (c) at a subsequent individual light valve cell; and (e) periodically switching said matrix from a data entry mode to a data display mode.
Claim 42
Independent Claim
190 words
A method of data entry and display with (1) an image detection means comprising photodetector means and matrix light valve means, the light valve means being between the image and the photodetector means and comprising a plurality of individually addressable cells, said cells being switchable between a data entry mode having light transmissive and non-light transmissive modes, and a data display means, and (2) encoding, storage, and decoding means, which method comprises the steps of: (a) forming the image on the matrix light valve means in a data entry mode; (b) maintaining the individually addressable cells in a non-light transmissive state; (c) sequentially switching an individual cell from a non-light transmissive state to a light transmissive state whereby to permit generation of a signal by the photodetector means responsive to incident light thereon; encoding the signal versus the address of the switched, light transmissive cell; thereafter switching the individual light valve cell from a light transmissive state to a non-light transmissive state; (d) thereafter repeating step (c) at a subsequent individual light valve cell; and (e) periodically switching said matrix from a data entry mode to a data display mode.
Claim 43
Dependent Claim
25 words
The data entry and display method of claim 36 wherein the photodetector means comprises a photovoltaic cell generating a voltage signal when exposed to light.
Claim 44
Dependent Claim
16 words
The data entry and display method of claim 36 wherein the photodetector means comprises a photoconductor.
Claim 45
Dependent Claim
23 words
The data entry and display method of claim 36 wherein the individual cells of the matrix light valve means are liquid crystal cells.
Claim 46
Dependent Claim
23 words
The data entry and display method of claim 39 wherein the individual cells are switchable between light transmissive and light dispersive states modes.
Claim 47
Dependent Claim
22 words
The data entry and display method of claim 36 wherein the individual cells of the matrix light valve means are electrochromic cells.
Claim 48
Dependent Claim
22 words
The data entry and display method of claim 41 wherein the individual cells are switchable between light transmissive and light blocking modes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |