A system for processing programs and system timing information derived from multiple broadcast sources

摘要

A system for initiating scheduled program processing functions such as program display, recording or playback, derives (205,210,215) a time clock based on a current time reference indication produced by a particular broadcast source. The derived time clock is used in initiating scheduled processing functions (320,225) for programs derived from the particular broadcast source and time clocks derived from sources other than the particular broadcast source are disregarded. The system displays a second time clock (230) different to the derived time clock. In addition, the system forms a composite program guide from data from multiple broadcast sources to associate current time reference indications with their corresponding broadcast sources.