Image reading apparatus and image reading method
US10554847B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/02885
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus includes: a reading unit configured to read an image of an original and output an image signal; and a white reference plate to be used for shading correction. The image reading apparatus drives the reading unit with maximum power consumption for a predetermined time period and thereafter drives the reading unit with reduced power consumption. The image reading apparatus causes the reading unit with reduced power consumption to read the white reference plate and generates shading data to be used for the shading correction. After that, the image reading apparatus causes the reading unit to read an original and corrects a reading result of the original based on the shading data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.