Image reading device for reading document images with visible light and non-visible light being switchingly applied
US9294651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2010 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jun 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/0446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading device includes: a CCD for reading an image on a document to output an image signal; a light source for switchingly emitting visible light and non-visible light; and lighting control means for controlling lighting periods of the light source. The lighting control means is adapted to perform control such that a first light source lighting period for applying non-visible light is longer than a second light source lighting period for applying visible light. The image reading device also includes splitting means for splitting the image signals outputted from the CCD into an image signal upon application of visible light and an image signal upon application of non-visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.