Back to results
US 2017/0302824 A1Published application
Printer cartridge and memory device containing a compressed color table
AssigneeHewlett-Packard Development Company, L.P.
InventorsJay S. Gondek, Stephen J. Nichols, Jefferson P. Ward
Life of this patent
Estimating the term…
Abstract
A printer cartridge includes a memory device and at least one compressed color table stored on the memory device. A compressed color table includes a losslessly compressed neutral axis, a number of nodes that correspond to seed color table nodes and a number of delta nodes that correspond to a number of delta tables. The number of delta tables indicate differences between interpolated color table nodes and corresponding actual color table nodes.
Claims20
A printer cartridge, comprising:
- a memory device, storing:
- at least one compressed color table to, upon reconstruction, convert input color data to output color data for printing, the at least one compressed color table comprising:
- a compressed seed color table comprising nodes stored at a first resolution;
- a compressed neutral axis comprising nodes stored at a second resolution that is greater than the first resolution;
- at least one delta table including a number of delta nodes, stored at a resolution higher than the first resolution, the delta tables excluding the seed color table nodes and neutral axis nodes;
- wherein the at least one delta table is compressed so that:
- a portion of the delta nodes have a value equal to zero;
- a string of the delta nodes having the value of zero are represented by a length value.
5 more elements
A print cartridge, comprising:
- a memory device, storing:
- a compressed multi-resolution color conversion table for reconstruction by a printer comprising:
- a seed color table comprising nodes at a first resolution;
- a neutral axis comprising nodes at a second resolution that is greater than the first resolution;
- a first delta table comprising a number of first delta nodes stored at an intermediate resolution, the intermediate resolution being between the first resolution and the second resolution, and
- a second delta table comprising a number of second delta nodes stored at the second resolution;
- wherein for each delta table:
- a portion of the delta nodes have a value equal to zero, and
- a string of delta node values of zero are represented by a length value.
6 more elements
A memory device comprising:
- compressed data that, when reconstructed by a printer, delivers a color table to convert input color data to output color data, the compressed data representing:
- a seed color table comprising nodes stored at a first resolution;
- a neutral axis comprising nodes stored at a second resolution;
- at least one delta table including a number of delta nodes stored at a resolution higher than the first resolution, the at least one delta table excluding the seed color table nodes and neutral axis nodes;
- wherein:
- a portion of the delta nodes have a value equal to zero;
- a string of the delta nodes having the value of zero are represented by a length value.
4 more elements
Dependencies are inferred from the claim text.