| 摘要 |
PURPOSE:To simplify the preset operation of a receivable channel and to eliminate a useless channel operation by discriminating a channel selection key at each data of the receivable channel with a display element corresponding to each of the channel selection keys. CONSTITUTION:A controller 4 sends a control signal to a receiver circuit 1 by a preset key 5 to start channel sweeping, and a detected output is obtained. Data representing a receiving frequency when the detected output exceeds a threshold value is stored in a memory of the controller 4. The controller 4 counts at each detection of the receivable channel and when the sweep of the entire area is finished, the information representing the number of the detected receivable channels is transmitted to a microcomputer 6. The microcomputer 6 calculates and transmits a control signal respectively to drivers 7, 8. The drivers 7, 8 set respectively driving of a display device 9 and the connecting state of a channel operating section 10. |
