Apparatus and method of controlling drive of camera module

摘要

The present invention discloses a drive control apparatus of a camera module and a method of controlling camera module drive. The drive control apparatus of the camera module according to an embodiment of the present invention comprises: a lens module movable along an optical axis; a first and a second stoppers defining maximum moving section of the lens module; and a controller for determining an available moving section by applying a first determined correction value to the maximum moving section so as to make the lens module to move between locations spaced from the first and second stoppers with a predetermined distance. According to the present invention, it is advantageously possible to reduce the electric current consumption when performing auto-focusing function.

主权项

1. A drive control apparatus of a camera module, comprising:
a lens module movable along an optical axis; a first stopper and a second stopper defining a maximum moving section of the lens module; and, a controller configured to determine an available moving section by applying a predetermined correction value to the maximum moving section, wherein the maximum moving section is a section between a first position of the lens module at which the lens module is in contact with the first stopper and a second position of the lens module at which the lens module is in contact with the second stopper, wherein the available moving section is a section between a third position of the lens module at which the lens module is spaced from the first position in a direction toward a center of the maximum moving section and a fourth position of the lens module at which the lens module is spaced from the second position in a direction toward the center of the maximum moving section, wherein each of a first distance of the third position from the first position and a second distance of the fourth position from the second position is larger than zero and is equal to or less than a predetermined critical value, and wherein the controller is configured to move the lens module only within the available moving section while performing an auto-focusing function.