Auto-Focus Camera Module with MEMS Capacitance Estimator
AssigneeDigitalOptics Corporation
InventorDavid McKinley
Life of this patent
Estimating the term…
Abstract
A MEMS actuator for a compact auto-focus camera module is configured to measure physical values and to estimated values each indicative of position or motion or both of a MEMS component. A smart logic component determines a set of MEMS driver control values based on analyzing the measured physical values and substituting estimated values to more accurately position the MEMS component. A MEMS driver component receives the set of MEMS driver control values and controls the position or motion, or both, of the MEMS component based on the MEMS driver control values.
Claims7
A MEMS actuator driver for an auto-focus camera module, comprising:
- a capacitance measurement component that measures physical values indicative of a position or motion, or both, of a MEMS component;
- a capacitance estimation component that calculates estimated values indicative of said position or motion, or both, of said MEMS component;
- a smart logic component that determines a set of MEMS driver control values based on analyzing said measured physical values and substituting estimated values to more accurately position the MEMS component;
- and
- a MEMS driver component that receives said set of MEMS driver control values and controls said position or motion, or both, of the MEMS component based on the MEMS driver control values.
Dependencies are inferred from the claim text.