Image sensing module outputting color signals or monochrome signals depending on mode of operation
US6812957B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2000 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Dec 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/701
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image preprocessing apparatus, which processes image signals of an image of a scanned object, includes an image sensing module, a multiplexing unit and an analog signal processor. The image sensing module includes a number of monochrome image sensors, as well as a black-and-white (B/W) image sensor, outputting a number of monochrome analog image signals and a B/W analog image signal respectively. The multiplexing unit receives the B/W analog image signal and some of the monochrome analog image signals and then selects either the B/W analog image signal or these monochrome analog image signals as the output of the multiplexing unit. The analog signal processor receives the output of the multiplexing unit and the monochrome analog image signals that are not received by the multiplexing unit, and outputs a digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.