Speedier channel changing method in digital data broadcasting service

摘要

A method of speeding up channel changing in a digital data broadcasting service is described. When a receiver is switched on a User Interface Component 10 (UI) transmits current channel information at S100 to all other components, a Service Information Component 30 (SI) then constructs a service database at S200 of all the channels received by a Data Transport Component 20 (DT) and notifies at S300 a Data Service Component 40 (DS) when it is complete. The DS then requests at S400 a service list from the SI and initialises each data service by requesting at S500 the primary data of each service from the DT and notifies at S600 a Service Presentation Component 50 (SP) that a service is possible. When a channel is changed the UI transmits at S700 new channel information to all components. The SP receives at S800 service data from the DS and presents it to the user. A second invention relates to recording a file name, a reference number and path by a MHEG engine and downloading a file with the largest reference number.