Patent ID: 7440128
Filing Date: 2008-10-21
Classification: H04N

Abstract:
1. A print data compressing method, comprising the steps: a slicing step, which divides each swatch of data to be printed into plural slices of data, each slice having m bits to represent printed pixels and being divided into n segments of data, where m, n are integers; a compressing step, which uses an inter-slice compression to represent a (x+1)-th slice of data on a basis of a x-th slice of data for generating a compressed (x+1)-th slice of data and a (x+1)-th control character; and a decompressing step, which uses an inter-slice decompression with respect to the inter-slice compression to thus restore the (x+1)-th slice of data from the compressed (x+1)-th slice of data for further printing.