Method and apparatus for improving data conversion efficiency
AssigneeHewlett-Packard Development Company, L.P.
InventorsRodney C.Y. Tay, Feng Yuan
Life of this patent
Estimating the term…
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.
Claims20
A method for operating a driver used in forming an image on media, comprising:
- generating a second set of data from a first set of data;
- storing the second set of data;
- comparing the first set of data to a third set of data;
- generating a fourth set of data from the third set of data, if a difference exists between the first set of data and the third set of data;
- and
- retrieving the second set of data, if equivalency exists between the first set of data and the third set of data.
A computer, comprising:
- a memory;
- and
- processing device configured to execute a set of instructions for generating a first device independent bit map from a first device dependent bit map, for storing the first device independent bit map in the memory, for comparing the first device dependent bit map to a second device dependent bit map, for generating a second device independent bit map from the second device dependent bit map if a difference exists between the first device dependent bit map and the second device dependent bit map, and for retrieving the first device independent bit map the memory if equivalency exists between the first device dependent bit map and the second device dependent bit map.
A storage device, comprising:
- a computer readable medium;
- and
- processor executable instructions stored on the computer readable medium configured to generate a second set of data from a first set of data, store the second set of data, compare the first set of data to a third set of data, generate a fourth set of data from the third set of data, if a difference exists between the first set of data and the third set of data, and retrieve the second set of data, if equivalency exists between the first set of data and the third set of data.
Dependencies are inferred from the claim text.