Lens drive system and portable device
AssigneeAsahi Kasei Microdevices Corporation
InventorsRyota Sakamoto, Ryuta Imashioya
Life of this patent
Estimating the term…
Abstract
A lens drive system that controls a relative position of a lens with respect to an image sensor includes multiple lens drive devices provided corresponding to multiple lenses and each controlling the relative position of a corresponding lens. Each of the image sensors outputs detection data, the detection data of which of the image sensors is used to generate image data is controlled according to status information of a camera device, and a signal processing unit of at least one of the lens drive devices changes power consumption of a position detection unit according to the status information.
Claims22
A lens drive system for controlling a relative position of a lens with respect to an image sensor for a plurality of lenses provided corresponding to a plurality of image sensors in a camera device, the lens drive system comprising:
- a plurality of lens drive devices, provided corresponding to the plurality of lenses, and each controlling the relative position of a corresponding lens,
- each of the lens drive devices comprising:
- a position detection unit that detects a current relative position of the corresponding lens;
- a calculation unit that calculates a drive amount of at least one of the lens and the image sensor based on a current position signal that is an output of the position detection unit and an input target position signal;
- a drive unit that drives at least one of the lens and the image sensor based on the drive amount;
- and
- a signal processing unit that outputs a power control signal for controlling power consumption of the position detection unit,
- each of the image sensors outputting detection data, a communication path of the lens drive device being active, and the detection data of which of the image sensors being used to generate image data is controlled according to status information of the camera device, and
- the signal processing unit of at least one of the lens drive devices changing power consumption of the position detection unit according to the status information.
A portable device, provided with a camera device, wherein
- the camera device comprises:
- a plurality of image sensors;
- a plurality of lenses provided corresponding to the plurality of image sensors;
- and
- a lens drive system that controls a relative position of a lens with respect to an image sensor,
- each of the lens drive devices comprises:
- a position detection unit that detects a current relative position of a corresponding lens;
- a calculation unit that calculates a drive amount of at least one of the lens and the image sensor based on a current position signal that is an output of the position detection unit and an input target position signal;
- a drive unit that drives at least one of the lens and the image sensor based on the drive amount;
- and
- a signal processing unit that outputs a power control signal for controlling power consumption of the position detection unit,
- each of the image sensors outputs detection data, a communication path of the lens drive device is active, and the detection data of which of the image sensors is used to generate image data is controlled according to status information of the camera device, and
- the signal processing unit of at least one of the lens drive devices changes power consumption of the position detection unit according to the status information.
Dependencies are inferred from the claim text.