Patent ID: 8306410

Claim:
A photographic device having an optical image stabilization (OIS) module, comprising: a compensation unit; a first position sensor, used to output a first position signal according to a position of the compensation unit in a first direction; a second position sensor, used to output a second position signal according to a position of the compensation unit in a second direction; and a central processing unit (CPU), comprising: a first servo driver circuit, comprising: a first amplifier unit, connected to the first position sensor, configured to receive and amplify the first position signal; and a first driving unit; a second servo driver circuit, comprising: a second amplifier unit, connected to the second position sensor, configured to receive and amplify the second position signal; and a second driving unit; a register, connected to the first driving unit, the first amplifier, the second amplifier and the second driving unit; a pulse width modulator (PWM) unit, connected to the register, the first driving unit and the second driving unit; and an anti-shake processing unit, connected to the PWM unit, the first amplifier unit and the second amplifier unit, the anti-shake processing unit configured to receive and process the amplified first position signal and the amplified second position signal, and use the register, the PWM unit, the first driving unit and the second driving unit to drive a first actuator and a second actuator and further adjust the compensation unit in the first direction and in the second direction.