| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel structure capable of storing data related to an ISMA in compliance with the existing MPEG-4IPMP extended standard in order to maintain the consistency with the newest MPEG-4IPMP extended standard while minimizing revision of ISMA defined parameters. <P>SOLUTION: An apparatus for transmitting an MPEG-4 IPMP extended ISMA media stream produces an ISMA media stream having an ISMA header and including, as a payload, contents, then embeds in the media stream an IPMP tool stream descriptor indicating, as a tool required for processing the contents, at least one tool selected from a group including an IPMP tool, an ISMACryp decryption tool, and a key management system (KMS) tool, and then transmits the ISMA media stream. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
