Image processing apparatus
US6118550A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Feb 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to an image processing apparatus. A black data generator of the image processing apparatus is operated such that a calculator solves the equation (1) using a maximum value, max(C,M,Y), detected by a maximum value detector, a minimum value, min(C,M,Y), detected by a minimum value detector, and a coefficient .beta. as parameters to output a black weight indicia .alpha. for black data: EQU .alpha.-1-{max(C,M,Y)-min(C,M,Y)}/.beta. (1) A multiplier solves the equation (2) to output a value K for the black data: EQU K=.alpha..multidot.min(C,M,Y) (2) Then, a character UCR converter, a photography UCR converter, and a halftone dot UCR converter output an output value BK for the black data corresponding to the value K as address data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.