| 摘要 |
PURPOSE:To make easy the channel selection operation for desired broadcast stations, by changing the count value of the binary channel selection counter through the control of the channel selection pulse generation circuit to display and store all the desired broadcast station receptionable. CONSTITUTION:The channel selection binary counter 14 counts the output of the channel selection pulse generation circuit, the output controls the frequency dividing ratio of the 1/N frequency divider 9, and the output demultiplying the output of the local oscillator with the divider 9 and that of the reference oscillator 11 are compared for the phase 10. The output of the binary-decimal decoder 20 is fed to the matrix decoder 24, which outputs two sets of row address signal and column address signal, performs matrix display 47, and gives the row and column address signals of other sets to the matrix memories 59N and 59P. Further, by controlling the channel selection pulse generation circuit and changing the count value of the counter 14, all the desired broadcast stations receptionable are displayed 47 and they are written in the memories 59N and 59P. Thus, the channel selection for desired broadcast stations can be made easily. |
