Lighting controller for lighting device for vehicle
US7352135B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2006 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Nov 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting controller for a lighting device for a vehicle includes a semiconductor light source; a power source for supplying electric power; and control circuitry for controlling a supply of a current to the semiconductor light source. The control circuitry selectively supplies the current to the semiconductor light source through a resistance element or through a bypass circuit for bypassing the resistance element based on a determination of a state of the current. A method for controlling a lighting device for a vehicle includes receiving electric power from a power source; supplying a current to a semiconductor light source; determining a state of the current supplied to the semiconductor light source; and selectively supplying the current to the semiconductor light source through a resistance element or through a bypass circuit for bypassing the resistance element based on the determination of the state of the current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.