Black recalculation for arbitrary HSL corrections in CMY color space
US5359436A · kind A · utility
20Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for defining a new value of K (black) corresponding with a change in CMY components. Original CMYK printing colors are provided. The original CMY printing colors are corrected to create new CMY printing colors. A value of a smallest one of the original CMY colors is sensed. A value of a smallest one of the new CMY colors is sensed. By use of each of these smallest values, the original K printing color value is modified to create a recalculated K printing color value. The recalculated black value corrects for distortion of original gray balance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.