DIGITAL BROADCAST RECEPTION CIRCUIT, DIGITAL BROADCASTS RECEPTION DEVICE USING THE SAME, AND ITS CONTROL METHOD

摘要

It is possible to provide a digital broadcast transmission/reception circuit which can perform switching of a video and an audio without interruption and reduce the power consumption as well as a digital broadcast reception device using the circuit and its control method. The digital broadcast reception circuit is used in the digital broadcast reception device which receives a digital broadcast signal for transmitting the same content as signals of a plurality of hierarchies of different qualities, processes each of the signals of the plurality of hierarchies by signal processing means to generate output signals, and outputs the output signal based on the signal of the hierarchy selected from the generated output signals. The digital broadcast reception circuit includes: switching control means which judges the reception state for the signals of the plurality of hierarchies so as to select a hierarchy for generating the output signal, generates a switching signal for outputting the signal of the selected hierarchy, and stops a part or whole of the signal processing means for processing the signal of the signals not selected; and output switching means which switches the output signal according to the switching signal.