Method of and apparatus for pursueing object of camera

The apparatus for tracking an object of a camera includes a plurality of memorys for sequentially storing input signals of a camera, a memory selecting circuit for sequentially selecting the plurality of memorys according to a predetermined time interval, a sensor for sensing memory address difference for the input signal of an object by detecting the signal stored in the memory, a voltage detector for selecting a voltage in proportion to the output of the sensor to angle-displace the focus of the camera by the amount of the movement of the object, and a driving motor for angle-displacing the focus of the camera according to the output of the voltage detector.