REPRODUCING APPARATUS, PROGRAM AND REPRODUCING METHOD

摘要

An I-Graphics decoder (13) decodes a graphics stream, and combines a page, in which a plurality of buttons are arranged, with a moving image. A command corresponding to a button on the page is executed, thereby executing a control (1) of switching pages and a control (2) of determining a button to be selected in the page as switched. It is determined whether the number of the button to be selected is an invalid value or not, and if any invalid value, then an alternative value is set to a status register.