System and method for adaptive digital ramp current control
US7830560B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
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Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Sep 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adaptive digital ramp current control system comprises a digital current ramp controller configured to digitally ramp a current level supplied to at least one light emitting diode (LED) according to a predetermined ramp profile, the ramp profile comprising at least one intermediate current level step between a minimum current level and a maximum current level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.