Print data compressing method

Details Print data compressing method Print data compressing method

2004-11-22

2008-10-21

Garcia, Gabriel I (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Communication

C358S539000

Reexamination Certificate

active

07440128

ABSTRACT:
A print data method includes a slicing step, a compressing step and decompressing step. The slicing step divides a swatch of data to be printed and required by each motor movement into a plurality of slices, each having m bits to represent printed pixels and further divided into n segments, where m, n are integers. The compressing step uses an inter-slice compression to represent an (i+1)-th slice of data on a basis of an i-th slice of data for generating a compressed (i+1)-th slice of data and an (i+1)-th control character. The decompressing step uses an inter-slice decompression with respect to the inter-slice compression to restore the (i+1)-th slice of data from the compressed (i+1)-th slice of data for further printing.

REFERENCES:
patent: 5923820 (1999-07-01), Cunnagin et al.
patent: 5930466 (1999-07-01), Rademacher
patent: 7289243 (2007-10-01), Fagan
patent: 2004/0032598 (2004-02-01), Fagan

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