Title:
VARIABLE LENS DRIVER CIRCUIT, COMMUNICATION DEVICE COMPRISING SAME, AND METHOD FOR DRIVING VARIABLE LENS
Document Type and Number:
WIPO Patent Application WO/2021/054748
Kind Code:
A1
Abstract:
A variable lens driver circuit, according to an embodiment, comprises: a voltage booster which increases the level of supply voltage by carrying out a switching operation corresponding to a switching frequency; a noise detection unit which detects the extent of noise generated from the voltage booster by the switching operation; and a booster control unit which adjusts the size of the switching frequency of the voltage booster in response to the extent of the noise which has been detected.
Inventors:
KIM CHANG WOOK (KR)
Application Number:
PCT/KR2020/012579
Publication Date:
March 25, 2021
Filing Date:
September 17, 2020
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H04N5/232; G02B3/12; G02B7/04; H04N5/225
Domestic Patent References:
| WO2018187591A2 | 2018-10-11 |
Foreign References:
| KR20180114802A | 2018-10-19 | |||
| KR20190074928A | 2019-06-28 | |||
| KR100462520B1 | 2004-12-17 | |||
| KR20180086737A | 2018-08-01 |
Attorney, Agent or Firm:
LEE, Seung Chan (KR)
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