Method and apparatus for reproducing blended colorants on an electronic display
US5428720A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Sep 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/466
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for reproducing the color of blended colorants on an electronic display such as a cathode ray tube, liquid crystal display or other type of electronic device that utilizes RGB values. Predictions of blended colorants on or in substrates can be made from XYZ measurements of samples prepared with no colorants, one colorant, and pairs of colorants. The calculation method uses light absorption, light scattering, and light absorption blend coefficients. An image digitizer can be used to obtain XYZ values from samples. Furthermore, image digitizer RGB values are converted into XYZ values with a non-linear model using a simple method. Furthermore, the above process to generate XYZ values from image digitizer RGB values can be used to generate RGB values from XYZ values for electronic display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.