Apparatus and method of controlling drive of camera module

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 memory for storing a first determined value representing an end point of an available moving section in a direction and a second determined value representing an end point of the available moving section in the other direction,
• wherein the available moving section is determined so as to make the lens module to move between locations spaced from the first and the second stoppers with a predetermined distance, respectively.

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;
• a magnetic member coupled to a side of the lens module;
• coils disposed to face the magnetic member with a distance there-between and generating a drive force of the lens module;
• and,
• a yoke having the coils attached thereto, wherein a length of the yoke in a direction of an optical axis is defined to be greater than a length of the magnetic member in a direction of the optical axis.

A drive control apparatus of a camera module, comprising:

• a lens module movable along an optical axis;
• a sensor for detecting a location of the lens module;
• a first and a second stoppers defining a maximum moving section of the lens module;
• 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;
• and
• a memory for storing a first determined value representing an end point of an available moving section in a direction and a second determined value representing an end point of the available moving section in the other direction,
• wherein the sensor, the controller and the memory are formed in the form of one-chip.

A method of controlling drive of a camera module, comprising a lens module movable along an optical axis, and a first and a second stoppers defining a maximum moving section;

• the method comprising steps of:
• detecting the maximum moving section of the lens module;
• and,
• determining an available moving section by applying a determined correction value to the maximum moving section so as to make the lens module to move between locations spaced from the first and the second stoppers with a predetermined distance.