Patent ID: 8115957
Filing Date: 2012-02-14
Classification: G06K,H04N

Abstract:
1. A data transmission apparatus for transmitting image data to an inkjet recording apparatus including (a) a feeding device which feeds a recording medium in a feeding direction, and (b) a line-type inkjet head which extends in a direction perpendicular to the feeding direction and across the recording medium fed in the feeding direction, and has an ink ejection surface in which a plurality of ink ejection openings are formed, the image data being related to an image to be recorded on the recording medium by the inkjet recording apparatus, and being constituted by a plurality of dot data elements respectively corresponding to a plurality of image dots of the image, the plurality of image dots being arranged in a plurality of rows and a plurality of columns, each row of the plurality of rows being parallel to a first direction and each column of the plurality of columns being parallel to a second direction, the first direction being perpendicular to the feeding direction and the second direction being parallel to the feeding direction, and each of the dot data elements being one of a predetermined plurality of kinds, the data transmitting apparatus comprising: a storing portion which stores the image data; a template-data generating portion which generates template data from the image data stored in the storing portion, by determining a most frequent kind of the predetermined plurality of kinds within each column of the plurality of columns or within each row of the plurality of rows, and arranging the template data, such that a portion of the template data corresponding to each element of each column of the plurality of columns represents the most frequent kind determined within that column or such that a portion of the template data corresponding to each element of each row of the plurality of rows represents the most frequent kind determined within that row, a data-block generating portion which generates a data block by a compressing portion which compresses the data block generated by the data-block generating portion to create a compressed file; and a transmitting portion which transmits the compressed file to the inkjet recording apparatus.