US 12,345,945 B2
Variable lens driver circuit, communication device comprising same, and method for driving variable lens
Chang Wook Kim, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/754,013
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Sep. 17, 2020, PCT No. PCT/KR2020/012579
§ 371(c)(1), (2) Date Mar. 21, 2022,
PCT Pub. No. WO2021/054748, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10-2019-0115892 (KR), filed on Sep. 20, 2019.
Prior Publication US 2022/0334345 A1, Oct. 20, 2022
Int. Cl. G02B 7/04 (2021.01); G03B 3/10 (2021.01); H04N 23/57 (2023.01)
CPC G02B 7/04 (2013.01) [G03B 3/10 (2013.01); H04N 23/57 (2023.01)] 19 Claims
OG exemplary drawing
 
1. A variable lens driving circuit that transmits and receives a wireless signal with a communication unit, comprising:
a voltage booster configured to perform a switching operation corresponding to a switching frequency to increase a magnitude of a supply voltage;
a noise detector configured to sense sensitivity to the wireless signal and detect a level of noise generated by the switching operation of the voltage booster, using the result of sensing; and
a booster controller configured to adjust the switching frequency of the voltage booster in response to the detected level of noise.