US4675745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading apparatus
Assignee: Canon Inc
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Filing: 1984-09-13
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Granted: 1987-06-23
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Expires: 2004-09-13
Abstract
Abstract An image reading apparatus has more than one CCD for reading an image, the CCDs or other sensors partly overlapping to form an overlapped reading region. A mark such as a thin black line is used for discriminating the overlapped reading region, a liquid crystal device is provided for displaying the determined overlapped reading region, and a joint correction circuit is provided for correcting image data. Overlap or drop of image data is prevented.
Inventors
- 👤 Yoshiyuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:32
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/192; H04N1/193
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
92 words
An image reading apparatus for photoelectrically reading an original image, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction so as to read an overlapping region; a mark used for discriminating the overlap reading region of said plurality of image sensors; and display means for displaying a reading state of said plurality of image sensors based on an output of said image reading means, which output is obtained when said image reading means, which output is obtained when said image reading means reads said mark.
Claim 2
Dependent Claim
92 words
An image reading apparatus for photoelectrically reading an original image, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction so as to read an overlapping region; a mark used for discriminating the overlap reading region of said plurality of image sensors; and display means for displaying a reading state of said plurality of image sensors based on an output of said image reading means, which output is obtained when said image reading means, which output is obtained when said image reading means reads said mark.
Claim 3
Dependent Claim
21 words
An apparatus according to claim 1, wherein said mark is arranged outside an area for placing an original to be read.
Claim 4
Dependent Claim
22 words
An apparatus according to claim 1, wherein said image reading means reads the image of the original after said mark is read.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 1, further comprising discriminating means for discriminating the overlap reading region in accordance with a mark signal from each of said plurality of image sensors.
Claim 6
Dependent Claim
35 words
An apparatus according to claim 4, further comprising eliminating means for eliminating an overlap image signal from an image signal from said image reading means in accordance with a discrimination result of said discriminating means.
Claim 7
Dependent Claim
20 words
An apparatus according to claim 1, wherein said display means displays read data of a predetermined area including said mark.
Claim 8
Dependent Claim
31 words
An apparatus according to claim 6, wherein said display means is adapted to display the read data of the predetermined area at intervals of a predetermined size on a division basis.
Claim 9
Dependent Claim
114 words
An image reading apparatus for photoelectrically reading an image of an original, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction so as to read an overlapping region; a mark used for discriminating the overlap reading region of said plurality of image sensors; eliminating means for eliminating overlap image signals from image signals obtained by means of reading the original image by said image reading means in accordance with mark signals obtained by means of reading said mark by said image reading means; and correcting means for correcting the eliminating operation of said eliminating means in accordance with a positional difference between said mark and the original.
Claim 10
Dependent Claim
114 words
An image reading apparatus for photoelectrically reading an image of an original, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction so as to read an overlapping region; a mark used for discriminating the overlap reading region of said plurality of image sensors; eliminating means for eliminating overlap image signals from image signals obtained by means of reading the original image by said image reading means in accordance with mark signals obtained by means of reading said mark by said image reading means; and correcting means for correcting the eliminating operation of said eliminating means in accordance with a positional difference between said mark and the original.
Claim 11
Dependent Claim
23 words
An apparatus according to claim 8, further comprising setting means for setting a correction value for the correcting operation of said correcting means.
Claim 12
Dependent Claim
20 words
An apparatus according to claim 9, further comprising storage means for storing the correction value set by said setting means.
Claim 13
Dependent Claim
18 words
An apparatus according to claim 8, wherein the original is supported on a plane different from said mark.
Claim 14
Dependent Claim
22 words
An apparatus according to claim 8, wherein said image reading means reads the image of the original after said mark is read.
Claim 15
Dependent Claim
35 words
An apparatus according to claim 8, wherein said eliminating means includes memory means for storing the image signals from said image reading means, and controls reading out of the image signals from said memory means.
Claim 16
Dependent Claim
82 words
An image reading apparatus for photoelectrically reading an original image, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction; eliminating means for eliminating image signals of a region overlappingly read by said plurality of image sensors from image signals obtained by means of reading the original image by said image reading means: and display means for displaying status of the image signals of at least the region overlappingly read by said plurality of image sensors.
Claim 17
Dependent Claim
82 words
An image reading apparatus for photoelectrically reading an original image, comprising: image reading means comprising a plurality of image sensors aligned along a main scan direction; eliminating means for eliminating image signals of a region overlappingly read by said plurality of image sensors from image signals obtained by means of reading the original image by said image reading means: and display means for displaying status of the image signals of at least the region overlappingly read by said plurality of image sensors.
Claim 18
Dependent Claim
32 words
An apparatus according to claim 14, further comprising discriminating means for discriminating the region overlappingly read, wherein said eliminating means eliminates the image signals of the region detected by said detecting means.
Claim 19
Dependent Claim
17 words
An apparatus according to claim 15, further comprising a marker used for discriminating the region overlappingly read.
Claim 20
Dependent Claim
35 words
An apparatus according to claim 14, wherein said eliminating means includes memory means for storing the image signals from said image reading means, and controls reading out of the image signals from said memory means.
Claim 21
Dependent Claim
19 words
An apparatus according to claim 14, wherein said display means displays a level of each of the image signals.
Claim 22
Dependent Claim
29 words
An apparatus according to claim 14. wherein said display means is adapted to display status of the image signals at intervals of a predetermined amount on a division basis.
Claim 23
Dependent Claim
93 words
An image reading apparatus for photoelectrically reading an image of an original, comprising: image reading means including a plurality of image sensors aligned along a main scan direction; discriminating means for discriminating a region overlappingly read by said plurality of image sensors in accordance with signals derived from said plurality of image sensors; eliminating means for eliminating image signals of the region discriminated by said discriminating means from image signals obtained by said image reading means; and correcting means for correcting the amount of image signals to be eliminated by said eliminating means.
Claim 24
Dependent Claim
93 words
An image reading apparatus for photoelectrically reading an image of an original, comprising: image reading means including a plurality of image sensors aligned along a main scan direction; discriminating means for discriminating a region overlappingly read by said plurality of image sensors in accordance with signals derived from said plurality of image sensors; eliminating means for eliminating image signals of the region discriminated by said discriminating means from image signals obtained by said image reading means; and correcting means for correcting the amount of image signals to be eliminated by said eliminating means.
Claim 25
Dependent Claim
35 words
An apparatus according to claim 20, wherein said eliminating means includes memory means for storing the image signals from said image reading means, and controls reading out of the image signals from said memory means.
Claim 26
Dependent Claim
17 words
An apparatus according to claim 20, further comprising a marker used for discriminating the region overlappingly read.
Claim 27
Dependent Claim
18 words
An apparatus according to claim 22, wherein the original is supported on a plane different from said mark.
Claim 28
Dependent Claim
22 words
An apparatus according to claim 22, wherein said image reading means reads the image of the original after said mark is read.
Claim 29
Dependent Claim
23 words
An apparatus according to claim 20, further comprising setting means for setting a correction value for the correcting operation of said correcting means.
Claim 30
Dependent Claim
20 words
An apparatus according to claim 25, further comprising storage means for storing the correction value set by said setting means.
References Cited (Backward Citations)
US4149090A
Cited
US4337394A
Cited
US4358794A
Cited
US4370641A
Cited
US4321628A
Cited
US4465939A
Cited
US4459619A
Cited
US4439790A
Cited
US4449151A
Cited
US4464681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |