| 摘要 |
<p>A program representative packetized datastream is generated from an input packetized datastream representing a plurality of programs. Program content packets comprising a desired program selected from the plurality of programs are identified (33; 45; 47). Condensed program specific information (CPSI) suitable for use in identifying and assembling the identified packets is formed (115, 110). The resulting CPSI and the identified packets are formed into a datastream. Program specific information packets and program content packets are also extracted from a packetized datastream and stored (95, 90) on a storage medium (105).</p> |
