Light emitting diode driving circuit
US8148903B2 · kind B2 · utility
1Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A LED driving circuit that may control current flow into an LED on a current path according to the amount of light sensed from the LED. An LED driving circuit for driving at least one LED may include at least one of: An optical sensor for receiving light emitted from the LED and generating a feedback signal having a level corresponding to an amount of the received light. A current regulator provided on a path through which current of the LED flows for regulating an amount of current flowing into the LED according to a comparison of the feedback signal with a first reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.