Method and apparatus for reading data pages on a data surface
US4864630A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for optically reading data in a substantially planar data field having a plurality of pages arranged in series of rows and columns. Each page is spaced apart from adjacent data pages by alignment-indicating streets, which are data-free blank areas. A CCD area array is positioned and spaced apart in generally parallel relation to the data field. The CCD area array is then moved linearly so that the array is opposite a data page to be read. An initial imaging thereafter takes placed in order to recognize the streets bordering a data page. Through recognition of the streets, a processor resolves the orientation of the data page relative to the CCD area array. The processor then transmits a command signal to a control circuit for rotational adjustment of the imaging of the data page.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.