Color facsimile previewer
US4250522A · kind A · utility
15Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6011
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color separation condition determining apparatus which is useful for determining the operation conditions of the color separation step in a color printing process, comprises a scanning section, a masking circuit, an under-color removal circuit, clip circuits, gradation a correction circuit, color correction circuit, a matrix circuit and a color monitor using a color CRT. The invention further includes a method for correcting color signals in the above apparatus and a masking circuit therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.