ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,985, issued on Aug. 19, was assigned to CHIPSEMI SEMICONDUCTOR ( NINGBO) Co. LTD. (Ningbo, China).
"Autofocus actuator control method" was invented by Yaoguo Zhang (Ningbo, China), Bo Xia (Ningbo, China) and Yulin Zhang (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "In accordance with the present disclosure, a method for controlling an autofocus actuator is provided such that the actual position of the autofocus actuator can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator in the autofocus actuator can be used to create a capacitance. When the rotor m...