| 摘要 |
<p>A data processing device for reproducing object streams each including a plurality of items of information, comprising an IPMP information extracting circuit (54) for extracting layered management information for controlling the feasibility of use of each object from the input data, a used state inspecting circuit (56) for judging whether or not use of an object of higher order than that of the object concerned is inhibited on the basis of the extracted IPMP information and a control information extracting circuit (58) for control performed so as to inhibit the use of the object concerned if use of the object of higher order is judged to be inhibited.</p> |
