| 摘要 |
A receiver includes a CPU. The CPU, when executing preset registration, in step S 1 first searches for the presence or absence of receivable channels. If there are receivable channels, received data (center frequency, etc.) is registered in step S 2 . If the received channel is a TV channel, filtering is carried out in step S 4 to count only the channels existing within a range of ± approximately 200 kHz of a center frequency. If it is a CATV channel, counting is further made in step S 5 on the channels existing within the range of ± approximately 200 kHz of the center frequency, and a filter process is carried out in order to remove the channels within the range of ± approximately 200 kHz of the center frequency +2 MHz of a CATV UHF-band channel overlapped with a TV channel.
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