| 摘要 |
PURPOSE:To reduce a data amount at every channel to be preset and stored on a channel selection memory, by forming voltage data by adding and reading out auxiliary data at the time of performing channel selection, and performing reception channel selection based on channel selection control due to the voltage data and tuning control due to an AFT voltage. CONSTITUTION:A readout control means 2 which forms readout voltage data of M-bits by adding prescribed auxiliary data of K-bits on the lower order of abbreviated voltage data obtained by reading out a memory 4 at the time of performing the channel selection, and outputs the readout voltage data as channel selection voltage data is provided. Therefore, the data preset and stored in the memory 4 as the channel selection voltage data of each channel becomes the abbreviated voltage data of N-bits in which the low-order K-bits within a range pulled in by the tuning control of the AFT voltage is excluded from the normal channel selection voltage data of M-bits. In such a way, it is possible to reduce the data amount at every channel preset and stored in the channel selection memory 4 and to perform the reception channel selection.
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