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US 2015/0319365 A1Published application
Systems and methods for optical image stabilization
AssigneeInvenSense, Inc.
InventorsStephen Lloyd, Mehran Ayat
Life of this patent
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Abstract
Systems and methods are disclosed for implementing optical image stabilization (OIS) in a mobile device. One or more functions associated with OIS may be performed by hardware and/or processing resources that are provided independently of a camera unit.
Claims32
An optical image stabilization (OIS) system comprising:
- a first camera unit including a lens, an image sensor and an actuator for moving the lens relative to the image sensor along at least two orthogonal axes;
- a motion sensor separate from the first camera unit including a gyroscope configured to sense angular velocity of the first camera unit on at least the two orthogonal axes;
- a motion processor configured to determine movement of the first camera unit based at least in part on output from the motion sensor;
- an OIS controller configured to output a signal corresponding to a compensating relative movement between the lens and image sensor in response to the determined movement of the first camera unit;
- an actuator circuit for translating the output signal to actuator movement along the at least two orthogonal axes;
- and
- a digital interface coupling the actuator circuit and the OIS controller.
4 more elements
A method for optically stabilizing an image, comprising:
- providing a first camera unit including a lens, an image sensor and an actuator for moving the lens relative to the image sensor along at least two orthogonal axes;
- sensing motion of the first camera unit using a gyroscope separate from the first camera unit configured to sense angular velocity of the first camera unit on at least the two orthogonal axes;
- processing the sensed motion to determine movement of the first camera unit;
- determining a compensating relative movement between the lens and the image sensor in response to the determined movement of the first camera unit;
- and
- controlling the actuator to produce the compensating relative movement by sending an output signal from a processor that determines the compensating relative movement to an actuator circuit for translating the output signal to actuator movement along the at least two orthogonal axes over a digital interface.
3 more elements
Dependencies are inferred from the claim text.