Method for standardizing input CMYK values for clustered printing environments
US7339704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | May 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention implements a CMYK to CMYK pre-transform in front of at least one printer to be clustered where the transform is designed to ensure that the printers addressed through the pre-transform have substantially identical output color for substantially identical input CMYK values. As one form of implementation a method is disclosed to build CMY to CMY 3D-LUTs and 1D-LUT for K using sensors in the field. Making use of a system LUT—CMY to CMY 3D-LUT and a K to K 1D-LUT—improves consistency and provides a coherent control strategy and a means to provide standardized input CMY and K values in a clustered environment so that single or multiple vendor DFEs see substantially identical CMYK values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.