Electro-optical reader with improved performance in high intensity ambient light
US7128264B2 · kind B2 · utility
3Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Jul 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10851
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A high gain, low signal-to-noise, transimpedance amplifier is prevented from saturation even in the presence of bright sunlight by an offset adjustment circuit utilizing a field effect transistor as a variable resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.