Illumination driver circuit for using in imaging-based barcode reader
US8220713B2 · kind B2 · utility
1Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2010 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Dec 21, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/375
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Illumination driver circuit for using in an imaging-based barcode reader is configured to provide the driving current for the illumination source with a Buck regulator when the driving current is above a threshold current value and to provide the driving current for the illumination source with a linear regulator when the driving current is not above the threshold current value. The threshold current value is substantially close to the smallest current the Buck regulator operative to provide when operating in a continuous mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.