Optical code reader including circuitry for processing the read symbology
US6126075A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10762
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An amplifier has an input responsive to an optical detector. An analog-to-digital converter is responsive to an output of the amplifier. A processor activates an optical emitter, and reads a first sample from the analog-to-digital converter. Upon determining that the first sample is less than a first threshold, the processor applies a first signal to a control input of the amplifier for a first duration. The processor reads a second sample from the analog-to-digital converter. Upon determining that the second sample is greater than a second threshold, the processor applies a second signal to the control input for a second duration less than the first duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.