Document reading apparatus with area recognizing sensor and obstacle detection
US5194729A · kind A · utility
18Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1990 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Sep 26, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0452
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document reading apparatus comprising a document table, a reading section disposed above the document table for reading a document placed on the document table. The reading section includes a sensor for detecting variations of brightness within a selected reading area of the document which is designated by light beams prior to a reading operation. This apparatus further comprises a display device for displaying the image of the selected reading area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.