Optical scanning
AssigneeContex A/S
InventorsNis Engholm, Anders Ørbæk
Life of this patent
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Abstract
Disclosed is a method of adjusting a scanner for scanning of an original, the scanner comprising an image sensor and a light source for emitting light, the method comprising the steps of: a) moving the image sensor in order for it to be located at a predefined scanning position by means of a movable mechanical member; b) determining the difference between the scanning position and the predefined scanning position; where the method further comprises: determining the difference between the scanning position and the predefined scanning position by detecting radiation from at least one fix-point having a fixed position relative to the image sensor.
Claims12
A method of adjusting a scanner for scanning of an original, the scanner comprising an image sensor and a light source for emitting light, the method comprising the steps of:
- while scanning of the original:
- a) moving the image sensor from an actual scanning position in order for it to be located at a predefined scanning position by means of a movable mechanical member configured to allow the image sensor to detect different portions of pixels so that a resolution of a digital image of the original is increased;
- b) determining the difference between the actual scanning position and the predefined scanning position by detecting radiation from at least one fix-point and compensating the movement of the image sensor relative to this difference;
- and
- c) scanning a portion of the original at the actual and predefined scanning positions and storing a digital image of said portion of the original.
A scanner for scanning of an original, the scanner comprising:
- an image sensor;
- a light source for emitting light;
- a movable mechanical member for moving the image sensor;
- means for determining a difference between a scanning position of the original and the predefined scanning position;
- and
- means for detecting radiation from at least one fix-point having a fixed position relative to the image sensor for determining the difference between the scanning position and the predefined scanning position;
- wherein the scanner while scanning of the original is configured to:
- a) scan an original for converting it to a digital image by detecting light incident on an the image sensor, the light being emitted from a light source and reflected from the original;
- the image sensor comprising a plurality of optical sensors
- b) move the image sensor from an actual scanning position in order for it to be located at the predefined scanning position by means of the movable mechanical member configured to allow the image sensor to detect different portions of pixels so that the resolution of the digital image of the original is increased;
- c) determine the difference between the actual scanning position of the original and the predefined scanning position by detecting radiation from at least one fix-point and compensating the movement of the image sensor relative to this difference;
- d) scan a portion of the original at the actual and predefined scanning positions and storing a digital image of said portions of the original.
Dependencies are inferred from the claim text.