1. An apparatus for processing augmented broadcast content, the apparatus comprising: a broadcast content receiving unit configured to receive broadcast content and a first reference signal from a broadcast content provider, the first reference signal including information used to recognize a target object in the broadcast content and composite the broadcast content and augmented content associated with the target object; an object identifying unit configured to identify the target object in the broadcast content by analyzing the broadcast content using an image or sound analysis algorithm with reference to the first reference signal; an augmented content acquiring unit configured to acquire the augmented content associated with the target object; and an augmented content compositing unit configured to composite the acquired augmented content into an augmentation region which is determined based on the first reference signal.