Image scanning apparatus with dirt detection and removal of influence of the dirt
US10958801B2 · kind B2 · utility
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Key dates
| Filing date | Oct 28, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00798
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image scanning apparatus includes: a reading unit that reads image data, which includes an image of a document transported along a transport path and an image at a scanning position of the image, from a storage area in synchronization with a reading synchronization signal; a detection unit that detects a dirt at the scanning position by processing the image data; and a delay unit that delays and outputs a period, during which the synchronization signal to be provided to the detection unit is valid, until reading of data of a document part included in the image data starts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.