SYSTEM FOR PROCESSING PROGRAMS AND SYSTEM TIMING INFORMATION DERIVED FROM MULTIPLE BROADCAST SOURCES

PROBLEM TO BE SOLVED: To solve problems relating to processing system timing and program specific information from multiple broadcast sources, specifically, e.g., problems such as use of system timing information, conditional access to programs, user's overriding of a content rating limit. SOLUTION: A system, for initiating scheduled program processing functions such as program display, recording or playback, derives a time clock on the basis of a current time reference indication produced by a particular broadcast source. The derived time clock is used for initiating scheduled processing functions 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 different from 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. COPYRIGHT: (C)2011,JPO&INPIT