Data acquisition device for optical detection and storage of visually marked and projected alphanumerical characters, graphics and photographic picture and/or three dimensional topographies
US6243503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | May 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04734
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The data acquisition device comprises a projecting device for projecting the light emitted by a radiation source onto a section of a marked surface, and an optical unit for recording and reproducing the reflected light on a screen sensor converting the reflected light into a sequence of electronic signals. Furthermore, the data acquisition device has a motion detector for generating synchronizing signals in the presence of a movement parallel with the marked surface, as well as a signal processing unit converting the signals of the screen sensor into information packets containing independently of the character code the alphanumerical, graphic or pictured information of a freely selectable part of the marked surface, and recallably storing such information packets in a memory unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.