US6345763B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reading apparatus for reading a bookform document placed on a document table in face-up state
Assignee: Minolta Co Ltd
•
Filing: 1998-12-28
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Granted: 2002-02-12
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Expires: 2018-12-28
Abstract
Abstract An image reading apparatus which reads out a document, such as as a book, placed face-up and opened on a document table. The apparatus includes an image reading device for reading out the document image placed on the document table, a mirror for imaging the document upper side plane, a projecting device which projects marks onto the document and mirror, and an image processing unit. A document characterized portion imaged on the mirror is read out by the image reading device and the image processing unit rectifies image distortion of the read out document image based on the characterized portion.
Inventors
- 👤 Shinya Matsuda
- 👤 Fuminori Moro
- 👤 Hiroshi Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:42
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00681; H04N1/00684; H04N1/00708; H04N1/00729; H04N1/00734; H04N1/00737; H04N1/00742; H04N1/0075; H04N1/04; H04N1/10; H04N1/1013; H04N1/1021; H04N1/1039; H04N1/1043; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0416; H04N2201/0422; H04N2201/0434
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
An image reading method which reads out a document image of an opened, face-up book, comprising a step of positioning the book on a document table; a step of detecting the size of the book on the document table: a step of projecting marks for positioning the book on the document table, the marks being projected in accordance with the detected size of the book; a step of fitting the book with the marks; and a step of reading out the document image of the opened, face-up book placed on the document table.
Claim 2
Dependent Claim
93 words
An image reading method which reads out a document image of an opened, face-up book, comprising a step of positioning the book on a document table; a step of detecting the size of the book on the document table: a step of projecting marks for positioning the book on the document table, the marks being projected in accordance with the detected size of the book; a step of fitting the book with the marks; and a step of reading out the document image of the opened, face-up book placed on the document table.
Claim 3
Dependent Claim
19 words
The image reading method as claimed in claim 1 , wherein the marks are not projected at image reading.
Claim 4
Dependent Claim
108 words
An image reading apparatus which reads out a document image of a book placed open and face-up, comprising: a document table upon which the book is placed opened and face-up; an image reading device for reading out the document image of the book placed on the document table; a mirror for imaging the upper side plane of the book on the document table; means for detecting a size of the book; and a projection device, responsive to the detected size of the book, for projecting a mark onto one of the document table and the mirror, the mark being used to position the book on the document table.
Claim 5
Dependent Claim
108 words
An image reading apparatus which reads out a document image of a book placed open and face-up, comprising: a document table upon which the book is placed opened and face-up; an image reading device for reading out the document image of the book placed on the document table; a mirror for imaging the upper side plane of the book on the document table; means for detecting a size of the book; and a projection device, responsive to the detected size of the book, for projecting a mark onto one of the document table and the mirror, the mark being used to position the book on the document table.
Claim 6
Dependent Claim
48 words
The image reading apparatus according to claim 3 , further comprising: an image processing unit, responsive to the read out document image of the opened, face-up book and the imaged upper side plane of the book, for rectifying distortion in the read out document image of the book.
Claim 7
Dependent Claim
33 words
The image reading apparatus according to claim 3 , wherein the image reading device simultaneously reads out the document image of the opened, face-up book and the upper side plane of the book.
Claim 8
Dependent Claim
27 words
The image reading apparatus according to claim 3 , wherein projection of the mark is prohibited during reading out a document image by the image reading device.
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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) | 2005-02-11 | 2005-08-13 | 2006-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-11 | 2009-08-13 | 2010-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-11 | 2013-08-13 | 2014-02-12 | $7700.00 | Window Closed / Lapsed |