Patent ID: 7050191
Filing Date: 2006-05-23
Classification: G06K

Abstract:
1. A method of converting page description data specifying a print document into pixel data for an individual page employing a data processing system including a central processing unit, a first memory having a first data size and a first data transfer rate and a second memory having a second data size smaller than the first data size and a second data transfer rate faster than the first data transfer rate, the method comprising the steps of: extracting a display list from the page description data; allocating space within the first memory to serve as a page buffer; dividing the page buffer within the first memory into a plurality of sub-bands, each sub-band having a data size smaller than the second data size; for each sub-band within the page buffer following the rendering and transferring steps for all sub-bands, printing a page by transfer of data from the page buffer to a print engine.