Actuator of camera module
US10757334B2 · kind B2 · utility
0Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Jan 4, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/687
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator of a camera module includes a driving coil disposed to face a detection target; a driving circuit including a plurality of transistors connected to the driving coil; and a processor configured to provide a respective gate control signal to a gate of each of the plurality of transistors, and detect a displacement of the detection target based on a component of an oscillation signal generated in a driving signal applied to the driving coil in response to an operation of any one of the plurality of transistors being switched by the respective gate control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.