| 摘要 |
PROBLEM TO BE SOLVED: To provide an audio device capable of preventing a tuner from performing wrong channel selection caused by electromagnetic radiation of a DC-DC converter. SOLUTION: This audio device 10 is provided with the tuner 2 having an automatic channel selection function and the DC-DC converter 1, an oscillation frequency switching means for switching the oscillation frequency f of an oscillation circuit of the DC-DC converter 1 in particular to two different oscillation frequencies or more f1, f2, ..., at least while the tuner 2 performs a channel selection operation, and a channel selecting means for performing the first and second carrier determination for determining the existence/nonexistence of respective carriers of the tuner 2 in one and the same reception frequency F to perform channel selection in the reception frequency F at the time of the oscillation of the DC-DC converter F in different oscillation frequencies f1, f2, ..., when the tuner 2 performs automatic channel selection. COPYRIGHT: (C)2006,JPO&NCIPI
|
