Driver circuit and method for operating a light emitting unit
US12035434B1 · kind B1 · utility
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15Claims
0Family size
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Key dates
| Filing date | Dec 15, 2022 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Dec 15, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver circuit for providing a driver current for operating a light emitting unit at a brightness level corresponding to a value of a brightness code. The driver circuit includes a digital-to-analog converter, DAC, stage configured to generate an intermediate signal in dependence of the value of the brightness code. Furthermore, the driver circuit includes a gain stage configured to amplify the intermediate signal in dependence of the value of the brightness code to provide the driver current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.