Abstract: When a voice is inputted to an operation terminal (200), the audio input is subjected to voice recognition in a voice recognizing unit (107) and keywords are extracted. A search condition creating unit (110) creates a search condition from the extracted keywords. A search unit (111) searches for control items that can be options to choose from. These control items are displayed on a television screen by an output information creating unit (113). A user uses the operation terminal (200) as a pointing device to select and point a desired control item among the displayed control items. Thereafter, a “select” key of operation keys is operated to obtain control codes for this control item. The control codes are sent to a television set (300).