Scanner frame
US5818610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04791
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner frame comprises a vertical track which is slidably attached at one end thereof to a horizontal track. The horizontal track is attached to a drawing board or any other suitable flat surface. An optical imaging device (i.e., an optical scanner) is slidably attached to the vertical track. A marker strip comprising a series of bars of uniform pitch are disposed on a surface of the horizontal track along the length thereof. These bars are detected by a sensor assembly disposed on the vertical track. Another marker strip comprising a series of bars of uniform pitch are disposed on a surface of the vertical track along the length thereof. These bars are detected by a sensor assembly disposed on the scanner. During use, a drawing to be scanned is secured on a board, the vertical track is positioned at the left-most position and the scanner is positioned at the upper end of the vertical track. Start and finish index marks are established, either by manual selection, or by automatic reading of existing lines of the drawing, e.g. boarders. Once the extents (i.e., the start and finish index locations) are entered, the system has been initialized. Scanned segments, which are a relativ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.