Image reading apparatus with correction of image signals
US5616914A · kind A · utility
21Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Mar 13, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04787
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus for reading a document such as book, constructed to detect a height of the document. A line sensor captures an image of the document and a lateral side view of the document reflected on a mirror. Then the height of the document detected by the line sensor is corrected based on a deviation between a positions of the document image projected on the line sensor and the lateral side view of the document projected on the line sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.