| 摘要 |
<p>A receiver unit demodulates a digital broadcast wave and reproduces an MPEG2 transport stream. When a contents change is detected in the MPEG2 transport stream, a network processor adds identification information to the frame corresponding to the MPEG2 transport stream of the contents change. The MPEG2 transport stream to which the identification information is added is accumulated in a storage unit. A network processor reads out the MPEG2 transport stream making use of the identification information and transmits it to the IP network through a switch.</p> |
