Light emitting diode driver for dimming and on/off control
US9999107B1 · kind B1 · utility
4Cited by
25References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 14, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one aspect, an integrated circuit (IC) includes a first magnetic field sensor configured to sense a ring magnet, a second magnetic field sensor configured to sense the ring magnet and processing circuitry configured to receive a first signal from the first magnetic field sensor and to receive a second signal from the second magnetic field sensor. The processing circuitry is further configured to control an on/off state of at least one light emitting diode (LED) and brightness of the LED based on movement and position of the ring magnet with respect to the first and second magnetic field sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.