| 摘要 |
<p>The method involves triggering signal search operation by a signal search triggering device, and performing a signal search process by a radio signal search device. Signal strength of frequency stored in a signal storage device is checked, where a recognized radio signal (S1) e.g. frequency modulated radio signal, is received as a current radio signal. Frequency band of the recognizable radio signal is constantly checked, if no radio signal of the frequencies stored in the signal storage device is recognized, where the recognized radio signal is received as the current radio signal.</p> |
