Power line dimming controller and receiver
US8350678B1 · kind B1 · utility
20Cited by
21References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Nov 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power line communication system transmits a dimming level to an electronic ballast to regulate the power consumed by a lamp. The power line controller has a notch generation circuit that generates notches on an AC power signal with a time duration in accordance with the dimming level of the lamp. A dimming interface associated with the electronic ballast detects the notches on the AC power signal. The dimming interface generates a ballast dimming level signal with a signal level related to the time duration of these notches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.