Drive circuit of voice coil motor, method for driving voice coil motor, lens module and electronic apparatus using the same
AssigneeRohm Co., Ltd.
InventorMasato Nishinouchi
Life of this patent
Estimating the term…
Abstract
A drive circuit, which is mounted on an electronic apparatus having a voice coil motor and drives the voice coil motor, includes: an interface circuit configured to receive a first signal indicating a target position of the voice coil motor and a second signal related to a posture of the electronic apparatus; a control circuit configured to generate a current command value of a drive current in response to the first signal and the second signal; and a current driver configured to generate the drive current in response to the current command value and supply the drive current to the voice coil motor.
Claims13
A drive circuit which is mounted on an electronic apparatus having a voice coil motor and drives the voice coil motor;
- comprising:
- an interface circuit configured to receive a first signal indicating a target position of the voice coil motor and a second signal related to a posture of the electronic apparatus;
- a control circuit configured to generate a current command value of a drive current in response to the first signal and the second signal;
- and
- a current driver configured to generate the drive current in response to the current command value and supply the drive current to the voice coil motor.
A method for driving a voice coil motor, comprising:
- generating a first signal indicating a target position of the voice coil motor and a second signal related to a posture of an electronic apparatus on which the voice coil motor is mounted;
- generating a current command value of a drive current in response to the first signal and the second signal;
- and
- generating the drive current in response to the current command value and supplying the drive current to the voice coil motor.
Dependencies are inferred from the claim text.