Method and apparatus for controlling light emitting diodes
US6864641B2 · kind B2 · utility
130Cited by
13References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting code (“LED”) circuit includes a plurality of light emitting diodes connected in a hybrid parallel-series configuration, and a current regulating circuit that includes a current regulating element connected to a first chain of the plurality of chains of LEDS, and a plurality of current mirroring elements, each current mirroring element being connected to a respective chain of the plurality of chains of LEDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.