Methods and apparatus for obtaining imaging information in bar code scanners
US6616044B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2002 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Oct 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10584
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for using a scan pattern to estimate imaging information for an object reflecting the scan pattern are described. As an object is brought within range of a scan window, a scan beam tracing out a scan pattern comprising a plurality of scan lines causes reflection of the scan beam back into the scan window to produce a scanner signal based on reflections of the scan beam. The time at which the scanner signal indicates the presence of an object is noted and this timing information is mapped to position information identifying the position of the scan beam. The timing and position information is used to estimate imaging information about the object, including position, size, shape and motion information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.