Patent ID: 6538762
Filing Date: 2003-03-25
Classification: G06K

Abstract:
A printer controller provided between a host device which produces high-order raster image data and a printer which forms a printed image on the basis of low-order raster image data, the controller comprising:a host interface section for connecting the printer controller to the host device; a printer interface for connecting the printer controller to the printer; a command analysis section which, through analysis of a control circuit command entered from the host device by way of the host interface section, identifies (i) an image data command including the high-order raster image data; and (ii) an image conversion parameter required for converting the high-order raster image data into the low order raster image data, and which transfers the high-order raster image data included in the image data command and the image conversion parameter included in the image conversion parameter setting command; an image conversion section which retains the image conversion parameter transmitted from the command analysis section and converts the high-order raster image data transmitted from the command analysis section to the low-order raster image data through image conversion on the basis of the thus-retained image conversion parameter, and which transmits the low-order raster image data; and a printer control information generation section which sends the low-order raster image data transmitted from the image conversion section to the printer by way of the printer interface.