To continuously grasp broadcast contents even when video can not be viewed.

A television receiving unit 1 receives a television signal corresponding to a desired channel from a broadcast signal received by an antenna. When it is detected by an opening/closing detection unit 4 that a casing is closed while a television broadcast is being viewed, a control unit 10 stops displaying video on a main display unit 6, decodes a caption in broadcast data, converts the decoded caption (character code) into a synthetic voice and switches the audio output of an earphone to caption reading mode for reading the caption in the synthetic voice. Furthermore, when switching to caption voice reading mode output, a degree of validity becomes different in accordance with a program category, thereby controlling automatic switching in accordance with the category.