Supply component comprising corrective data
In some examples, a supply component for a printing device includes a memory device comprising a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing. The respective corrective data includes a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types.
1. A supply component for a printing device, the supply component comprising:
a reservoir storing a print material; and
a memory device comprising:
a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing, the respective corrective data comprising:
a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types,
wherein the respective corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media of the selected media type.
2. The supply component of claim 1 , wherein the respective corrective data comprises:
quantized coefficients derived from a compression of a difference color table including a plurality of difference nodes in which each difference node represents a value that is to be combined with a corresponding node of the reference color table, the quantized coefficients useable to produce a reconstructed difference table, and
the plurality of residual values to apply to the reconstructed difference table to produce an output difference color table combined with the reference color table to produce the customized color table for use with the selected media type of the plurality of media types.
3. The supply component of claim 2 , wherein the respective corrective data includes node location information of locations of nodes of the reconstructed difference table to which the plurality of residual values are to be applied.
4. The supply component of claim 2 , wherein the respective corrective data comprises a step size related to a compression ratio of the compression.
5. The supply component of claim 2 , wherein the respective corrective data comprises a coefficient bit assignment table that includes information related to a number of bits assigned to each of the quantized coefficients.
6. The supply component of claim 2 , wherein the compression is a lossy compression.
7. The supply component of claim 6 , wherein the plurality of residual values are provided for nodes of the reconstructed difference table that have values that differ from values of corresponding nodes of the difference color table by greater than a specified threshold.
8. The supply component of claim 1 , wherein the plurality of residual values comprise a bitstream of residual values.
9. The supply component of claim 1 wherein a subset of nodes of the reference color table corresponds to an ink color of a plurality of ink colors of the printing device.
10. The supply component of claim 1 , wherein the respective corrective data in the memory device comprises losslessly compressed corrective data.
11. The supply component of claim 1 , wherein the print material in the a reservoir comprises ink or toner.
12. The supply component of claim 1 , wherein the plurality of media types comprise at least two selected from among plain paper, glossy paper, and an overhead transparency.
13. The supply component of claim 1 , wherein the supply component is selected from among a drum, a developer, and a fuser.
14. The supply component of claim 1 , wherein storage of the plurality of corrective data in the memory device consumes less memory space than storage of the plurality of color tables in the memory device.
15. A print cartridge for a printing device, the print cartridge comprising:
a reservoir storing a print material; and
a memory device comprising:
a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein each respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing, each respective corrective data comprising:
quantized coefficients derived from a compression of a respective difference color table including a plurality of difference nodes in which each difference node represents a value that is to be combined with a corresponding node of the reference color table, the quantized coefficients useable to produce a reconstructed difference table,
a plurality of residual values to apply to the reconstructed difference table to produce an output difference color table combined with the reference color table to produce a customized color table for use with a selected media type of the plurality of media types, and
node location information of locations of nodes of the reconstructed difference table to which the plurality of residual values are to be applied,
wherein the respective corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media of the selected media type.
16. The print cartridge of claim 15 , wherein each respective corrective data of the plurality of corrective data comprises a step size related to a compression ratio of the compression.
17. The print cartridge of claim 15 , wherein each respective corrective data of the plurality of corrective data comprises a coefficient bit assignment table that includes information related to a number of bits assigned to each of the quantized coefficients.
18. The print cartridge of claim 15 , wherein the compression is a lossy compression, and the plurality of residual values are provided for nodes of the reconstructed difference table that have values that differ from values of corresponding nodes of the difference color table by greater than a specified threshold.
19. A supply component for a printing device, the supply component comprising:
a reservoir storing a print material; and
a memory device comprising:
a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing, each respective corrective data comprising:
quantized coefficients derived from a compression of a respective difference color table including a plurality of difference nodes in which each difference node represents a value that is to be combined with a corresponding node of the reference color table, the quantized coefficients useable to produce a reconstructed difference table,
a plurality of residual values to apply to the reconstructed difference table to produce an output difference color table combined with the reference color table to produce a customized color table for use with a selected media type of the plurality of media types,
node location information of locations of nodes of the reconstructed difference table to which the plurality of residual values are to be applied, and
a step size related to a compression ratio of the compression, wherein the respective corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media of the selected media type.
20. The supply component of claim 19 , wherein the compression is a discrete cosine transform compression.
21. The supply component of claim 19 , wherein the respective corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media of the selected media type,
the supply component further comprising a reservoir storing a print material.