A voice acquisition section 126 acquires a voice of a user viewing content. A recording processing section 116 records content data and user voice data and generates a content file in which the content data and the user voice data are associated with a recording time. A voice detection section 136 detects whether or not the voice of the user has been acquired by the voice acquisition section 126. An event information generation section 140 generates event information including a start time and an end time of the acquisition of the voice of the user. A communication section 102 transmits the event information to a server.