Methods and apparatus for optical image stabilization
AssigneeSemiconductor Components Industries, LLC
InventorYoshihisa TABUCHI
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Abstract
Various embodiments of the present technology may provide methods and apparatus for optical image stabilization. The methods and apparatus for optical image stabilization may be integrated within an electronic device. An exemplary system may include an actuator control circuit responsive to a sensor and a feedback signal from an actuator. The actuator control circuit may be configured to calibrate a gain applied to a drive signal based on a relative position between the actuator and the sensor and an output signal generated by the actuator control circuit.
Claims20
A control circuit adapted to communicate with a sensor and capable of controlling an actuator of an image system, comprising:
- an input terminal configured to receive an input signal, wherein the input signal comprises an x-component, a y-component, and a z-component;
- a first circuit connected to the input terminal and configured to:
- receive the y-component and generate a first correction signal according to the y-component;
- receive the z-component and generate a second correction signal and a third correction signal according to the z-component;
- and
- generate a first drive signal according to the first, second, and third correction signals;
- and
- a second circuit connected to the input terminal and configured to:
- receive the x-component and generate a fourth correction signal according to the x-component;
- receive the z-component and generate a fifth correction signal and a sixth correction signal according to the z-component;
- and
- generate a second drive signal according to the fourth, fifth, and sixth correction signals.
A method for driving an actuator of an image system according to a sensor, comprising:
- receiving, from the sensor, an input signal comprising an x-component, a y-component, and a z-component;
- generating:
- a first correction signal according to the y-component;
- a second correction signal and a third correction signal according to the z-component;
- a fourth correction signal according to the x-component;
- and
- a fifth correction signal and a sixth correction signal according to the z-component;
- and
- generating:
- the first drive signal according to the first, second, and third correction signals;
- and
- the second drive signal according to fourth, fifth, and sixth correction signals.
An image system, comprising:
- a sensor configured to generate an input signal comprising an x-component, a y-component, and a z-component;
- an actuator responsive to a first drive signal and a second drive signal;
- a control circuit in communication with the sensor and capable of controlling the actuator, comprising:
- an input terminal configured to receive the input signal;
- a first circuit connected to the input terminal and configured to:
- receive the y-component and generate a first correction signal according to the y-component;
- receive the z-component and generate a second correction signal and a third correction signal according to the z-component;
- and
- generate the first drive signal according to the first, second, and third correction signals;
- and
- a second circuit connected to the input terminal and configured to:
- receive the x-component and generate a fourth correction signal according to the x-component;
- receive the z-component and generate a fifth correction signal and a sixth correction signal according to the z-component;
- and
- generate the second drive signal according to the fourth, fifth, and sixth correction signals.
Dependencies are inferred from the claim text.