Patent ID: 7893962
Filing Date: 2011-02-22
Classification: H04N

Abstract:
1. A print system comprising: an image source unit; and a print unit connected to the image source unit through a USB interface, wherein the image source unit includes: wherein, if the print request command is generated when the USB device controller of the image source unit receives the “Interrupt In” command from the USB host controller of the print unit, the USB device controller of the image source unit returns the print request command to the USB host controller of the print unit in response to the “Interrupt In” command, when the print unit receives the print request command, the print unit transmits, to the image source unit, a resource file request command to read the desired resource file required for performing the print operation requested by the print request command from the data storage of the image source unit, and the print unit independently reads the desired resource file from the data storage of the image source unit and performs the print operation by using the read resource file, after the print unit receives the print request command,