Patent ID: 8115817

Claim:
An anti-shake circuit for an imaging device, comprising: a differential circuit configured to receive an analog sensing signal and a target signal and to generate a difference signal that represents a difference between the analog sensing signal and the target signal, wherein the analog sensing signal represents an amount of shaking movement of the imaging device while capturing an image; an analog mathematical circuit configured to perform at least one mathematical operation on the difference signal, and to provide on an output at least one mathematical output signal; and a driver electrically coupled to receive the at least one mathematical output signal, and accordingly to generate a driving signal and control an actuator in order to correct or compensate for the shaking movement; wherein the differential circuit comprises: a first differential amplifier electrically coupled to receive a differential pair of the analog sensing signals and amplify a difference therebetween, thereby generating a first amplified output signal; and a second differential amplifier configured to amplify a difference between the first amplified output signal and the target signal, thereby generating the difference signal.