Light emitting diode driver for dimming and on/off control
US10219344B2 · kind B2 · utility
1Cited by
33References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2018 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
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.