Data processing method and apparatus for a data stream including object streams

A data processing method, comprising the steps of:

• separating each object stream from a data stream including a plurality of object streams and a control stream having scene description information for synthesizing respective sets of information included in the plurality of object streams, and management information for managing copyright of copyright information, wherein the management information includes a reproduction controlling command and time information;
• reproducing information included in the plurality of object streams;
• synthesizing the respective sets of information included in the plurality of object streams based on the scene description information and outputting resultant information;
• and
• controlling the reproducing of one of the object streams in accordance with the reproduction controlling command and information based on a relationship between the time information of the management information and a time specified by information in another one of the object streams.

A data processing device, comprising:

• input means for inputting a data stream including a plurality of object streams, wherein the data stream includes a data management stream including a reconstruction controlling command and time information;
• separation means for separating each object stream from the input data stream;
• reconstruction means for reconstructing information included in the plurality of object streams;
• and
• control means for controlling the reconstruction of one of the object streams in accordance with the reconstruction controlling command and information based on a relationship between the time information of the data management stream and a time specified by information in another one of the object streams.

A data processing device, comprising:

• a data reproducing unit for reproducing synthesis information by separating each object stream from a data stream including a plurality of object streams and a data management stream, wherein the data management stream includes a reproduction controlling command and time information, said data reproducing unit comprising:
• input means for inputting the data stream including the plurality of object streams;
• separation means for separating each object stream and the data management stream from the input data stream;
• reconstruction means for reconstructing the object stream separated by said separation means;
• and
• control means for controlling the reconstruction of one of the object streams in accordance with the reproduction controlling command and information based on a relationship between the time information of the data management stream and a time specified by information in another one of the object streams.

A data processing apparatus, comprising:

• input means for inputting a data stream including a plurality of object streams, a management stream having scene description information for synthesizing respective sets of information included in the plurality of object streams, and management information for managing copyright of copyright information, wherein the management information includes a reconstruction controlling command and a time information;
• separation means for separating each object stream from the input data stream;
• reconstruction means for reconstructing sets of information of each object stream separated by said separation means;
• reproduction means for obtaining reproduction information by synthesizing respective sets of information reconstructed by said reconstruction means based on the scene description information;
• and
• control means for controlling the reconstruction of one of the object streams in accordance with the reconstruction controlling command and information based on a relationship between the time information of the management information and a time specified by information in another one of the object streams.

A data processing apparatus which has a data reproducing unit for reproducing synthesis information by separating streams from a data stream, said data reproducing unit comprising:

• input means for inputting a data stream including a plurality of object streams and a management stream having scene description information for synthesizing respective sets of information included in the plurality of object streams and management information for managing copyright of copyright information, wherein the management information includes a reproduction controlling command and a time information;
• separation means for separating each object stream from the input data stream;
• reconstruction means for reconstructing sets of information of each object stream separated by said separation means;
• reproduction means for obtaining reproduction information by synthesizing respective sets of information reconstructed by said reconstruction means based on the scene description information;
• and
• control means for controlling the reconstruction of one of the object streams in accordance with the reproduction controlling command and information based on a relationship between the time information of the management information and a time specified by information in another one of the object streams.