| 摘要 |
PURPOSE:To omit the adjustment for tuning at the receiver installation time to select desired channels, by providing a means where digitized tuning voltage data are compressed and stored for all channels. CONSTITUTION:A channel selecting device which selects one of plural digitized and stored tuning voltages to select a channel is provided with a means where tuning data for all channels are compressed and stored in the factor. For example, data with the tuning voltage for the standard tuner, the sample tuning voltage, and coefficients of forecast as elements is stored in an ROM9, and an approximate value of the sample tuning voltage obtained for the tuner for the channel selecting device is stored ina programmable memory 10. Data from the memory 10 is applied to an operator 11 by the control of a control device 13, ad the approximate value of a tuning voltage corresponding to an input channel is stored in a register 8, thus selecting a desired channel. |
