High intensity discharge lamp ballast with anti-theft operating mode
US7230349B2 · kind B2 · utility
0Cited by
12References
8Claims
0Family size
Inventors
Key dates
| Filing date | Oct 12, 2005 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A high intensity discharge (HID) assembly comprises ballast circuits which includes a micro-controller, and an HID headlamp. In order to deter theft of the HID assembly from a vehicle, the micro-controller communicates with a vehicle computer, checks the VIN of the vehicle, and if the micro-controller does not recognize the VIN, causes the HID headlamp to operate in a flickering power output mode. The ballast circuits include a power control circuit, a lamp current regulator, a 400v regulator, a current sense circuit, a turn-on synchronization circuit, a shut down circuit, and a pulse width modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.