Hand-supportable digital imaging-based bar code symbol reader supporting narrow-area and wide-area modes of illumination and image capture
US7128266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Jan 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10881
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hand-supportable digital imaging-based bar code symbol reading device comprises: an ir-based object presence and range detection subsystem; a multi-mode area-type image formation and detection subsystem having narrow-area and wide area image capture modes of operation; a multi-mode LED-based illumination subsystem having narrow-area and wide area illumination modes of operation; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; a multi-mode image-processing bar code symbol reading subsystem; an input/output subsystem; a manually-activatable trigger switch; a system mode configuration parameter table; and a system control subsystem integrated with each of the above-described subsystems. The digital imaging-based bar code reading device supports narrow-area and wide-area modes of illumination and image capture, and can be configured and operated in numerous programmable modes of system operation to automatically read 1D and 2D bar code symbologies in a high-speed manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.