US5235437A
Expired / Lapsed
US
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Analog/digital image processor apparatus with liquid crystal light modulator
Assignee: Sharp Corp
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Filing: 1990-12-11
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Granted: 1993-08-10
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Expires: 2010-12-11
Abstract
Abstract An image processing apparatus includes a light modulator, an analog writing system for analogously writing an image of an original in the light modulator, a digital reading system for digitally reading the written image out of the light modulator, a processing section for processing the read image data, a digital writing system for digitally writing the processed image in the light modulator, and an analog reading system for analogously reading the image written on the light modulator. The light modulator includes a photoconductive material, a liquid crystal layer laminated on the photoconductive material, and a pair of electrodes sandwiching the photoconductive material and the liquid crystal layer. The liquid crystal layer can provide a storage function so as to enable the reading and writing of the image from the same direction.
Inventors
- 👤 Masayuki Katagiri
- 👤 Noritoshi Kako
- 👤 Yoji Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:00
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135; G03; G03B; G03B27/00; G03B27/72; G03B27/725; H04N1/00127; H04N1/00249; H04N1/04; H04N1/10; H04N1/46; H04N1/50; H04N1/506; H04N1/508; G02B; G02B5/00; G02B5/32; G02F1/1357; G03H; G03H1/00; G03H1/0005; G03H1/26; G03H2001/2605; G03H2001/261; G03H2270/00; G03H2270/20; G03H2270/22; H04N1/113
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
155 words
An image processing apparatus comprising: a light modulator having a photoconductive material including an image-writing plane, a liquid crystal layer laminated on said photoconductive material, a pair of electrodes sandwiching said photoconductive material and said liquid crystal layer, and a spacer inserted between said photoconductive material and one of said electrodes surrounding said liquid crystal layer; an analog writing system for analogously writing an original image in said light modulator; a digital reading system for digitally reading the image written in said light modulator by emitting a laser beam for scanning said light modulator in two dimensions and for generating read image data; a processing section for image-processing the read image data; a digital writing system for digitally writing processed image data in said light modulator by applying said laser beam for scanning on said light modulator in two dimensions; and an analog reading system for analogously reading an image written in said light modulator.
Claim 2
Dependent Claim
155 words
An image processing apparatus comprising: a light modulator having a photoconductive material including an image-writing plane, a liquid crystal layer laminated on said photoconductive material, a pair of electrodes sandwiching said photoconductive material and said liquid crystal layer, and a spacer inserted between said photoconductive material and one of said electrodes surrounding said liquid crystal layer; an analog writing system for analogously writing an original image in said light modulator; a digital reading system for digitally reading the image written in said light modulator by emitting a laser beam for scanning said light modulator in two dimensions and for generating read image data; a processing section for image-processing the read image data; a digital writing system for digitally writing processed image data in said light modulator by applying said laser beam for scanning on said light modulator in two dimensions; and an analog reading system for analogously reading an image written in said light modulator.
Claim 3
Dependent Claim
13 words
An apparatus according to claim 1, wherein said apparatus processes a color image.
Claim 4
Dependent Claim
29 words
An apparatus according to claim 1, wherein said analog writing system includes three light sources for Red, Green and Blue, or Cyan, Magenta and Yellow colors, and a lens.
Claim 5
Dependent Claim
29 words
An apparatus according to claim 2, wherein said analog writing system including three light sources for Red, Green and Blue, or Cyan, Magenta and Yellow colors, and a lens.
Claim 6
Dependent Claim
55 words
An apparatus according to claim 1, wherein said digital reading system has a combination of a laser beam source, a laser beam scanning system, a focusing lens, and a photo detector, or a combination of a laser beam source, a lens, a perforated mirror, a holographic scanner, a galvanomirror, a lens and a photo detector.
Claim 7
Dependent Claim
55 words
An apparatus according to claim 2, wherein said digital reading system has a combination of a laser beam source, a laser beam scanning system, a focusing lens, and a photo detector, or a combination of a laser beam source, a lens, a perforated mirror, a holographic scanner, a galvanomirror, a lens and a photo detector.
Claim 8
Dependent Claim
49 words
An apparatus according to claim 1, wherein said digital writing system has a combination of a laser beam source, a laser beam scanning system and a laser modulating circuit, or a combination of a laser beam source, a lens, a holographic scanner, a galvanomirror and a laser modulating circuit.
Claim 9
Independent Claim
49 words
An apparatus according to claim , wherein said digital writing system has a combination of a laser beam source, a laser beam scanning system and a laser modulating circuit, or a combination of a laser beam source, a lens, a holographic scanner, a galvanomirror and a laser modulating circuit.
Claim 10
Dependent Claim
28 words
An apparatus according to claim 1, wherein said analog reading system includes three light sources for Red, Green and Blue, or Cyan, Yellow and Magenta, and a lens.
Claim 11
Dependent Claim
28 words
An apparatus according to claim 2, wherein said analog reading system includes three light sources for Red, Green and Blue, or Cyan, Yellow and Magenta, and a lens.
Claim 12
Dependent Claim
21 words
An apparatus according to claim 5, wherein said laser beam source is a laser diode or a He-Ne (Helium-Neon) gas laser.
Claim 13
Dependent Claim
21 words
An apparatus according to claim 6, wherein said laser beam source is a laser diode or a He-Ne (Helium-Neon) gas laser.
Claim 14
Dependent Claim
21 words
An apparatus according to claim 7, wherein said laser beam source is a laser diode or a He-Ne (Helium-Neon) gas laser.
Claim 15
Dependent Claim
21 words
An apparatus according to claim 8, wherein said laser beam source is a laser diode or a He-Ne (Helium-Neon) gas laser.
Claim 16
Dependent Claim
25 words
An apparatus according to claim 5, wherein said photo detector consists of a quick-responsive photodiode, a diode array, or one or more charged coupled device.
Claim 17
Dependent Claim
14 words
An apparatus according to claim 1, wherein said light modulator includes a light-shielding film.
Claim 18
Dependent Claim
20 words
An apparatus according to claim 1, wherein said processing section consists of a computer including a microprocessor and a memory.
Claim 19
Dependent Claim
21 words
An apparatus according to claim 17, wherein said processing section runs a control program for editing inputting and outputting an image.
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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) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |