Terminal with flicker-corrected aimer and alternating illumination
US9659199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2016 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Jun 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1011
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An indicia reading terminal is disclosed that eliminates unwanted flickering effects in an illuminated screen reading mode, among other advantageous features. The indicia reading terminal, in response to a screen reading signal, is operative to activate a screen reading cycle. In the screen reading cycle, an imaging subsystem is activated at least once at the same time that an illumination subsystem is activated for one of a plurality of active illumination periods, for a first illuminated exposure period. The imaging subsystem is activated at least once while the illumination subsystem is not activated, for a first unilluminated exposure period, which is longer than the first illuminated exposure period. An aimer subsystem is activated for a plurality of active aimer periods when neither the imaging subsystem nor the illumination subsystem is activated, wherein intervals of time between the active aimer periods are equal, within nominal tolerances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.