High-speed scanner having image processing for improving the color reproduction and visual appearance thereof
US6924909B2 · kind B2 · utility
18Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jun 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner for digitizing a document includes a digitizer for digitizing the document into a first color space; a circuit for converting the digitized data into a second color space having a luminance channel and two chrominance channels; a multiplexer having text, approximate actual color of a uniform area and a predetermined color as input for selecting either the text, approximate actual color or the predetermined color as outputs; and multiplexer control input which determines which of the outputs will be selected as actual output based on a uniform area of the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.