Scanner with a reference pattern for merging images and method of merging images
First Claim
Patent Images
1. A flat bed scanner with a reference pattern for merging images, comprising:
- a scan area for positing a document to be scanned;
a carriage for scanning the document; and
a reference pattern positioned at one side of the scan area, wherein, by using the carriage to detect the reference pattern, the images can be merged precisely.
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Abstract
Using a reference pattern of the invention, discontinuous images caused by inadequate memory can be merged precisely. The reference pattern can be applied to both the flat bed scanner and the Automatic Document Feed (ADF) scanner.
11 Citations
12 Claims
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1. A flat bed scanner with a reference pattern for merging images, comprising:
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a scan area for positing a document to be scanned;
a carriage for scanning the document; and
a reference pattern positioned at one side of the scan area, wherein, by using the carriage to detect the reference pattern, the images can be merged precisely. - View Dependent Claims (2, 3, 4)
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5. An Automatic Document Feed (ADF) scanner with a reference pattern for merging images, comprising:
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a carriage;
a reference roller located at an area detectable by the carriage, wherein a document to be scanned rolls along with the rolling of the reference roller; and
a reference pattern rolled up and attached at one end of the reference roller so that the reference pattern rolls along with the reference roller, wherein by using the carriage to detect the reference pattern, the images can be merged precisely. - View Dependent Claims (6, 7, 8)
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9. A method of merging images in a flat bed scanner, wherein the scanner comprises a carriage, a scan area and a reference pattern located at one side of the scan area, wherein the method comprises:
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(a) detecting two intersect points of an image merging scan line and the reference pattern and determining the distance therebetween, wherein the distance between said two intersect points is defined as a first interval and a scan line where the carriage posits, while a memory of the scanner is inadequate, is defined as the image merging scan line;
(b) slowing down and moving the carriage in a first direction and stopping at a scan line defined as a first stopping scan line;
(c) moving the carriage in a second direction opposite to the first direction, starting from the first stopping scan line, passing the image merging scan line, slowing down and to a stop at a second stopping scan line;
(d) moving the carriage in the first direction from the second stopping scan line, wherein a stable scan line is where the carriage starts to move stably;
(e) detecting two intersect points of the stable scan line and the reference pattern and determining the distance therebetween, wherein the distance between said two intersect points is defined as a second interval, and determining a migration distance by the first interval and the second interval, using a logic operation; and
(f) moving the carriage from the stable scan line along the first direction and continuing scanning after the carriage reaches the image merging scan line. - View Dependent Claims (10, 11, 12)
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Specification