Patent ID: 8169670
Filing Date: 2012-05-01
Classification: H04N

Abstract:
1. An image scanning device comprising: a board having a surface on which a document having a rectangular shape is puttable, the surface having an X-axis extending in an X-direction and a Y-axis extending in a Y-direction orthogonal to the X-direction, the document including a standard document having a plurality of standard sizes different from one another and each defined by a horizontal edge and a longitudinal edge orthogonal to the horizontal edge; a receiving unit that receives a light reflected on the document putted on the surface; a presuming unit configured to presume a dimension of the horizontal edge of the document putted on the surface, based on the reflected light; a determining unit configured to determine, based on the presumed dimension, whether or not the document putted on the surface has one of the plurality of standard sizes; an assuming unit configured to assume that the document putted on the surface has a virtual size defined by a virtual horizontal edge and a virtual longitudinal edge orthogonal to the virtual horizontal edge if the determining unit determines that the document putted on the surface has neither the plurality of standard sizes, the virtual horizontal edge having a virtual horizontal dimension equal to or larger than the presumed dimension if the horizontal edge and the virtual horizontal edge extend in the X-direction, the virtual longitudinal edge having a virtual longitudinal dimension; and a scanning unit that scans the document over a range corresponding to the virtual size to generate image data, if the assuming unit assumes that the document putted on the surface has the virtual size.