Digitizing circuit for anti-ambient light noise
US7503497B2 · kind B2 · utility
1Cited by
2References
14Claims
0Family size
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Key dates
| Filing date | Jun 8, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45586
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method of extracting data from a barcode or similar symbol in relatively large ambient light is disclosed. The system uses a slice signal that follows the upper part of a negative offset signal, or the lower part of a positive offset signal, depending upon the value of the input signal. The system may be implemented in digital or analog hardware.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.