According to one embodiment, with respect to each of content data Cn (or an output form thereof) which is output, audience information for use in output control of the content data Cn, a condition of external information for executing the output control, and a content of the output control which is executed when the condition is satisfied, are set up, and are set in an output control information definition file 20D. From photography data including an audience photographed by an image photography unit, and from external information such as a distance to a subject, which is measured by a range finder, the external information of a kind corresponding to each content Cn that is output is acquired. By judging whether the condition of the external information is satisfied or not, the content of the output control is executed.