Methods and apparatus for enhanced scanner operation employing bar code and bar code fragment time and position of data collection
US6695211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jul 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10861
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A timing and mirror position detector for use in a bar code scanner having a rotating optical assembly. The optical assembly is rotated by a motor which produces a fixed number of pulses per rotation, at least one of the pulses occurring each time the motor passes through a reference position as it rotates. The pulses are continuously monitored and counted. Elapsed time from the time a reference pulse occurs is accurately measured and correlated by a processor with events of interest. When an event of interest, such as a bar code scan, occurs, the timing and pulse count are evaluated and processed to determine the angle of rotation of the motor at the time the scan occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.