Method and apparatus for improving data conversion efficiency

Details Method and apparatus for improving data conversion efficiency Method and apparatus for improving data conversion efficiency

2006-12-12

2006-12-12

Tran, Douglas Q. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Emulation or plural modes

C358S001900

Reexamination Certificate

active

07148975

ABSTRACT:
A driver module can perform a conversion from a device dependent bit map to a device independent bit map. The driver module includes a configuration to compare a previously received device dependent bit map to a most recently received device dependent bit map. If the two bit maps are equivalent, the driver module generates a printer control language file for an imaging operation using a device independent bit map previously generated from the previously received device dependent bit map. If the two bit maps are not equivalent, the driver module generates a printer control language file for an imaging operation using a device independent bit map generated from the most recently received device dependent bit map.

REFERENCES:
patent: 6144458 (2000-11-01), McLachlan et al.
patent: 6930803 (2005-08-01), Suzuki
Hewlett-Packard Company, Patent Application “Printer Driver For Generating A Reduced Printer Description File,” U.S. Appl. No. 09/379,831, Filed on Aug. 24, 1999.

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