Method of selectively projecting scan lines in a multiple-line barcode scanner
US8371507B2 · kind B2 · utility
544Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2007 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Oct 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10851
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of selectively generating one or more scan lines from a multi-scan line scanner involves measuring the pulse widths of the pulses in a signal output of a motor driving the polygon mirror of the scanner wherein the signal relates to the position of the polygon's mirror facets. By measuring and distinguishing each of the pulses in the signal, the illumination of the scan beam can be synchronized with the rotation of the polygon mirror to only generate a desired number of scan line patterns that is less than the full complement of the scan line patterns capable of being generated by the multi-scan line scanner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.