Patent ID: 11871098
Assignee: APPLE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A non-transitory computer-accessible storage medium storing program instructions that when executed on one or more processors of a camera device cause the camera device to:
prior to a camera session, determining a position offset based at least in part on a difference between a known current position of a camera lens relative to a photosensor and a sensed current position of the camera lens relative to the photosensor determined from position sensor data; and
responsive to a determination that the position offset is valid, use the determined position offset during a camera session to:
control the position of the camera lens relative to the photosensor in a first control mode that calculates the position using a lens position sensor, wherein the control comprises repeated adjustments of the position in a control loop based at least in part on the position sensor data and the determined position offset.