Color table compression
US10306111B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 23, 2018 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | May 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In some examples, a print cartridge includes a memory device comprising quantized coefficients derived from a lossy compression, at a selected step size, of a difference color table including a plurality of difference nodes in which each difference node represents a difference value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the quantized coefficients useable to produce a reconstructed difference color table including a first set of difference nodes each representing a difference value that is within an error threshold at the selected step size, and a second set of difference nodes each representing a difference value that is outside an error threshold at the selected step size. The memory device further comprises corrective information to correct the second set of difference nodes of the reconstructed difference color table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.