| 摘要 |
PROBLEM TO BE SOLVED: To provide a TV broadcasting receiver which attenuates a disturbing signal from a mixed signal of a TV broadcast signal and the disturbing signal, can flexibly correspond even to a disturbing signal with a different frequency and has high convenience. SOLUTION: This TV broadcasting receiver is provided with an antenna 2, a distribution circuit 3, a TV broadcasting signal trap filter 4, a frequency counter 5, a disturbing signal trap filter 6, a tuning circuit 7, an RF/IF converting part 8, a switch 9 and a resistor R. Control is performed equally to the center frequency fB of the disturbing signal SMF with which the center frequency of a disturbing signal trap filter 6 is detected by VT voltage V1 corresponding to the center frequency fO of the detected disturbing signal SMF with a high level, and the RF/IF converting part 8 equally controls the center frequency fO of the TV broadcasting signal trap filter 4 and the center frequency fO of the tuning circuit 7 with VT voltage V2 corresponding to a selected and set band. COPYRIGHT: (C)2005,JPO&NCIPI
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