Patent US4723138A successfully refreshed from Google Patents.
US4723138A
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Image display apparatus
Assignee: Canon Inc
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Filing: 1985-04-08
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Granted: 1988-02-02
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Expires: 2005-04-08
Abstract
Abstract An image display apparatus includes a first image carrier along with an apparatus for inputting an image signal. An erasable image is formed on the first image carrier in accordance with the image signal input from the image signal input apparatus. A display area displays the image formed on the first image carrier. A second image carrier, which is associated with the first image carrier, contains a visible image which is photoelectrically read and converted to an image signal. The visible image carried on the second image carrier is automatically erased after the visible image is converted to an image signal.
Inventors
- 👤 Norio Hashimoto
- 👤 Kazuyoshi Chiku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/1255; G; G03; G03G; G03G15/00; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04072; G03G15/22; G03G15/221; G09; G09G; G09G3/00; G09G3/008; H04N1/19; H04N1/191; H04N1/192; H04N1/193
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
109 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for photoelectrically reading a visible image carried on said second image carrier and converting the visible image to an image signal; and means for automatically erasing the visible image carried on said second image carrier after the visible image is converted to an image signal.
Claim 2
Dependent Claim
109 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for photoelectrically reading a visible image carried on said second image carrier and converting the visible image to an image signal; and means for automatically erasing the visible image carried on said second image carrier after the visible image is converted to an image signal.
Claim 3
Dependent Claim
21 words
An image display apparatus according to claim 1 wherein said second image carrier allows additional recording of new image information thereon.
Claim 4
Dependent Claim
30 words
An image display apparatus according to claim 2 wherein said second image carrier extends along and in parallel to a display plane of said first image carrier and is transparent.
Claim 5
Dependent Claim
38 words
An image display appartaus according to claim 1 wherein said image forming means includes irradiation means for irradiating a beam to said first image carrier and developing means for developing said first image carrier irradiated by said beam.
Claim 6
Dependent Claim
102 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for photoelectrically reading a visible images carried on said first image carrier and said second image carrier converting the visible images to one image signal; and means for erasing the visible image carried on said second image carrier.
Claim 7
Dependent Claim
102 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for photoelectrically reading a visible images carried on said first image carrier and said second image carrier converting the visible images to one image signal; and means for erasing the visible image carried on said second image carrier.
Claim 8
Dependent Claim
21 words
An image display apparatus according to claim 5 wherein said second image carrier allows additional recording of new image information thereon.
Claim 9
Dependent Claim
30 words
An image display apparatus according to claim 5 wherein said second image carrier extends along and in parallel to a display plane of said first image carrier and is transparent.
Claim 10
Dependent Claim
38 words
An image display apparatus according to claim 5 wherein said image forming means includes irradiation means for irradiating a beam to said first image carrier and developing means for developing said first image carrier irradiated by said beam.
Claim 11
Dependent Claim
28 words
An image display apparatus according to claim 5 further comprising control means for controlling start timings of drive of said first image carrier and said second image carrier.
Claim 12
Dependent Claim
27 words
An apparatus according to claim 5, wherein said erasing means automatically erases the visible image carried on said second image carrier after the visible image is read.
Claim 13
Dependent Claim
34 words
An apparatus according to claim 5 wherein said reading means reads the visible image carried on said first image carrier and the visible image carried on said second image carrier at the same time.
Claim 14
Dependent Claim
124 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for selecting at least one of the visible image carried on said first image carrier and the visible image carried on said second image carrier to be read; and means for photoelectrically reading the selected visual images carried on at least one of said first image carrier and said second image carrier and converting the visual images to image signals.
Claim 15
Dependent Claim
124 words
An image display apparatus comprising: a first image carrier; image signal input means; image forming means for forming an erasable image on said first image carrier in accordance with an image signal input from said image signal input means; a display area for displaying thereon the image formed on said first image carrier; a second image carrier associated with said first image carrier; means for selecting at least one of the visible image carried on said first image carrier and the visible image carried on said second image carrier to be read; and means for photoelectrically reading the selected visual images carried on at least one of said first image carrier and said second image carrier and converting the visual images to image signals.
Claim 16
Dependent Claim
23 words
An image display apparatus according to claim 12 wherein further comprising means for designating the carrier to be read by said reading/converting means.
Claim 17
Dependent Claim
30 words
An image display apparatus according to claim 12 wherein said second image carrier extends along and in parallel to a display plane of said first image carrier and is transparent.
Claim 18
Dependent Claim
38 words
An image display apparatus according to claim 12 wherein said image forming means includes irradiation means for irradiating a beam to said first image carrier and developing means for developing said first image carrier irradiated by said beam.
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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) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |