Image reader suitable for manual scanning
US4684998A · kind A · utility
32Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1072
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reader of hand scanner type has a transparent support for fixing an original on a table in position, a reading head, LEDs for irradiating the original, an imaging sensor array for reading the original image further LEDs and sensor for detecting the head scanning position, a control circuit including a turn on circuit and/or an alarm control circuit, and a display LED. The LEDs for image reading are turned on only during image reading. When manual scanning is performed too fast and further signal processing cannot be performed, this can be signalled to the operator by the display LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.