Patent ID: 7936478
Filing Date: 2011-05-03
Classification: B41J,G03G,G06F,G06K,H04N

Abstract:
1. A method of printing a compressed image, the method comprising the steps of: receiving, with a printer controller, the image, having a bi-level black data layer compressed in an Edge Delta and Runlength (EDRL) compression format and a continuous tone (contone) CMYK data layer, from a computer; expanding the image by simultaneously decompressing the two data layers in parallel; halftoning the contone CMYK data layer into bi-level CMYK data layer; compositing the bi-level black data layer over the bi-level CMYK data layer to form a composited bi-level CMYK image; and transmitting the composited bi-level CMYK image to a memory buffer of a pagewidth printer for printing.