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公开(公告)号：US20220166926A1
公开(公告)日：2022-05-26
申请号：US17456517
申请日：2021-11-24
申请人： LX Semicon Co., Ltd.
发明人： Kyu Ho KIM , Jin Kook YUN , Dong Gil JEONG , Ho Jeong JIN
摘要： A blur compensation circuit of an optical image stabilization device includes a movement detection circuit configured to provide a movement detection signal corresponding to a movement of a photographing module; a position detection circuit configured to provide a position signal of an actuator for driving the photographing module; a delta-sigma conversion circuit configured to generate control data corresponding to a deviation between the movement detection signal and the position signal, perform a delta-sigma conversion on the control data, and output driving data corresponding to a result of the delta-sigma conversion; and a driving circuit configured to control driving of the actuator by the driving data.
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公开(公告)号：US20240192575A1
公开(公告)日：2024-06-13
申请号：US18532400
申请日：2023-12-07
申请人： LX SEMICON CO., LTD.
发明人： Hyung Seup KIM , Kyu Ho KIM , Dong Hwan YOON , Jin Kook YUN , Dong Gil JEONG
CPC分类号： G03B5/00 , H03K5/003 , H03M1/38 , G03B2205/0007
摘要： An analog front-end circuit includes a hall bias correction loop circuit configured to correct a sensing voltage of a hall sensor by adjusting a hall bias current flowing in the hall sensor while tracking a change in the sensing voltage of the hall sensor based on a temperature change, an offset correction loop circuit configured to correct an offset correction voltage while tracking an offset change of the hall sensor and an offset change of an amplifier circuit based on the temperature change, the amplifier circuit configured to amplify and output the sensing voltage of the hall sensor, corrected through at least one of the hall bias correction loop circuit and the offset correction loop circuit, and an analog-digital converter configured to convert an output voltage of the amplifier circuit into sensing data and output the sensing data.
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