| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce, at the time of execution of optimization of a voltage-controlled oscillator at a reception device including tuner parts of a plurality of systems, a noise appearing in a video under reception by another tuner part.SOLUTION: A high frequency processing part 40 outputs a reception signal obtained by mixing high frequency signal received by an antenna and distributed by a distributor with a local oscillation frequency oscillated by a local oscillator 420 including a voltage-controlled oscillator. Following this, a host CPU 44 accelerates a frequency of a clock at the time of execution of voltage-controlled oscillator optimization for checking correspondence between a control voltage applied to the voltage-controlled oscillator and the local oscillation frequency of the voltage-controlled oscillator.</p> |
