Patent ID: 8186594
Filing Date: 2012-05-29
Classification: G06K,H04N

Abstract:
1. An apparatus comprising: a printing section, configured to print a plurality of predetermined two-dimensional code data on a sheet, wherein at least two of the plurality of two-dimensional code data have cell sizes different from each other; a reading section, configured to read an image from the sheet as a result of the printing so as to obtain image data; a decoding section, configured to decode the plurality of two-dimensional code data contained in the image data obtained by the reading section; and a selecting section, configured to select a minimum cell size from cell sizes of two-dimensional code data that can be decoded by the decoding section, wherein each two-dimensional code data contains a timing pattern, wherein the selecting section calculates a maximum expansion/contraction ratio of the timing pattern of each two-dimensional code data contained in the image data, and wherein the selecting section selects the minimum cell size from cell sizes of the two-dimensional code data that can be decoded by the decoding section, and having a maximum expansion/contraction ratio that falls within a predetermined ratio range.