Optical code reader and methods and articles therefor
US6112992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10851
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for providing an optical code reading mode and a data communication mode comprises an optical detector, a variable-gain amplifier having an input and an output, an optical code reader circuit and a data communication circuit. The input of the variable-gain amplifier is responsive to the optical detector. The optical code reader circuit and the data communication circuit are responsive to the output of the amplifier. The variable-gain amplifier provides a first gain during the optical code reading mode, and a second gain during at least a portion of the data communication mode, wherein the second gain is less than the first gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.