Digital broadcast receiving system

Details Digital broadcast receiving system Digital broadcast receiving system

2007-03-27

2007-03-27

Tran, Khanh (Department: 2611)

Pulse or digital communications

Receivers

C386S349000

Reexamination Certificate

active

09679623

ABSTRACT:
A second is counted at a step S11, and an information table is read at a step S12. Content change of the information table is checked at a step S13. The content change is checked by checking the value of a CRC or checking content change of at least one of values of PIDs of an image, a sound and a PCR, stream types and descriptors, information necessary for operations of a receiver. When the contents of the information table are determined as changed by the aforementioned checking method (YES at the step S13), a determination is made that change of a program is detected at a step S14and a program parameter described in the information table is set as a signal extraction parameter of a demultiplexer at a step S15, for executing channel changing validating the signal extraction parameter set in the demultiplexer at a step S16. Thus obtained is a digital broadcast receiving system capable of executing receiving in program change with no hindrance through a receiver having a relatively simple structure.

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