| 摘要 |
PROBLEM TO BE SOLVED: To suppress an error when a satellite signal which has a narrow band and a low bit rate is received. SOLUTION: When a frequency drift is detected, a charge pump circuit 45 minimizes the value of a current supplied to an integrator 46 to make slow the control speed of a varicap control voltage controlling a local oscillator 26, so AFC can be performed even for the narrow-band and low-bit-rate satellite signal, and a data error in program reception can be suppressed. |
