Patent ID: 6906822
Filing Date: 2005-06-14
Classification: G06K

Abstract:
1. A page printer comprising: a printer engine; a memory which includes an input area, for storing input data, a compression area, for storing compressed drawing data, and a bit-map area, for storing expanded drawing data; a compression circuit, for compressing drawing data and for storing the resultant compressed drawing data in said compression area of said memory; an expanding circuit, for expanding said compressed drawing data and for storing the resultant expanded drawing data in said bit-map area of said memory; a video output circuit, for transferring said expanded drawing data to said printer engine; and a controller for analyzing said input data for each job and creating drawing data for a designated resolution, wherein said controller changes said designated printing resolution to a lower printing resolution, and repeats an input data analyzation process beginning with said input data entered for the first page of said job when said controller detects a memory shortage of said compressed area, and prints said job at the lower printing resolution.