| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide logical composite channel mapping in an MPEG network. <P>SOLUTION: A logical channel table (LCT) or a composite channel using simple conventional channels provides the mapping of a logical channel number (LCN) representing a service and a transport stream ID/program number. An LCT entry includes a composite channel indicator, which when set to '1', indicates that the channel is a composite channel, and indicates a home channel of the composite channel. The LCT provides a composite channel table (CCT) to a decoder 10 so that a tuner 12 can be retuned to the actual program designated in the CCT for current viewing. Each entry in the CCT associates a composite channel number (CCN) with a LCN of the currently active service for the composite channel. These tables operate together with the definition of conventional MPEG-2 services to decode a multi-service transport stream. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
