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Invention Grant
US08194806B2 Demodulation device, demodulation device control method, demodulation device control program, and recording medium with recorded demodulation device control program 有权
解调装置，解调装置控制方法，解调装置控制程序和具有记录解调装置控制程序的记录介质

Demodulation device, demodulation device control method, demodulation device control program, and recording medium with recorded demodulation device control program
Abstract:
This demodulation device receives and demodulates a digital broadcast wave. This demodulation device includes an RF search control unit (41) and a GI search control unit (42). The RF search control unit (41) determines whether or not there is a broadcast wave in a certain channel, in accordance with an intensity of a signal outputted from a tuner (12) for receiving a digital broadcast wave. The GI search control unit (42) determines whether or not the broadcast wave is digital, based on whether or not the signal outputted from the tuner (12) contains a guard interval. Thus, the demodulation device is capable of efficiently searching for a channel containing a digital broadcast wave.
Abstract(Chinese):

该解调装置接收并解调数字广播波。 该解调装置包括RF搜索控制单元（41）和GI搜索控制单元（42）。 RF搜索控制单元（41）根据从用于接收数字广播波的调谐器（12）输出的信号的强度来确定某个频道中是否存在广播波。 GI搜索控制单元（42）基于从调谐器（12）输出的信号是否包含保护间隔来确定广播波是否是数字的。 因此，解调装置能够有效地搜索包含数字广播波的信道。

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