| 摘要 |
PURPOSE: An auto frequency navigator is provided to decrease an inconvenience of a user, and to offer a good broadcasting signal by chasing a frequency automatically in any region. CONSTITUTION: A channel data of each region is added to a main broadcasting signal in a broadcasting signal of a specific channel. An information signal recovers an information signal by processing part filters an information signal part(S103). The channel data of each region is stored at a micro processor(S104). The micro processor receives a gain outputted by an automatic gain controller of a voice signal process part continuously(S105). The micro processor decides whether the gain is bigger than a reference value or not(S106). When the gain reaches to a saturation point, the channel data of each region is transmitted to a tuner sequentially, and a frequency selected by the tuner is changed according to the channel data of each region(S107). After this, the micro processor monitors the gain feedbacked from the voice signal processor to the tuner continuously, and decides whether a receive signal is exact or not(S108).
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