| CPC H04N 23/68 (2023.01) [G02B 27/644 (2013.01); G03B 5/00 (2013.01); H04N 23/6812 (2023.01); H04N 23/687 (2023.01); G03B 2205/0015 (2013.01); G03B 2217/005 (2013.01)] | 18 Claims |
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1. A tiltless optical image stabilization (OIS) circuit comprising:
a first signal processing unit configured to generate a first direction-position detection signal based on a first direction-first sensing signal from a first direction-first position detection sensor disposed on a housing of a camera module and a first direction-second sensing signal from a first direction-second position detection sensor disposed on the housing, and generate a tilt detection signal based on the first direction-first sensing signal and the first direction-second sensing signal;
a control unit, connected to the first signal processing unit, configured to generate a first direction position control signal, a tilt control signal, and a second direction position control signal, based on the first direction-position detection signal, the tilt detection signal, and a second direction sensing signal from a second direction-position detection sensor disposed on the housing, respectively;
a second signal processing unit configured to generate a first direction-first position control signal and a first direction-second position control signal based on the first direction position control signal and the tilt control signal; and
a driving unit configured to generate a first direction-first driving signal, a first direction-second driving signal, and a second direction driving signal, based on the first direction-first position control signal, the first direction-second position control signal, and the second direction position control signal, respectively,
wherein the second signal processing snit is connected between the control unit and the driving unit.
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