Variable gain amplifier for bar code reader
US9177187B2 · kind B2 · utility
0Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10554
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for controlling an amplifier in a bar code reader are disclosed, wherein the method may include receiving light at a photodiode within the bar code reader from a bar code being scanned by a scan mirror powered by a scan motor; converting the received light into an initial electrical signal; determining whether the scan motor is undergoing a change in direction; establishing a gain value for the amplifier based on an outcome of the determining step; and amplifying the initial electrical signal into an amplified signal using the established gain value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.