| 摘要 |
A receiver, which receives an ISMA media stream that is MPEG-4 IPMP-expanded, is provided with processes of: receiving an ISMA media stream containing an ISMA head, contents and an IPMP tool list descriptor that indicates a method for processing the contents; acquiring the IPMP tool list descriptor from the ISMA media stream; making an inspection as to whether or not the tool indicated by the IPMP tool list descriptor is present in the receiver; and when the tool is present, processing the contents by using the tool, while, when the tool is not present, completing the processes without causing any failure.
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