| 摘要 |
PURPOSE:To shorten a time until the abnormality of a reception clock signal is detected after it is generated in a frame pulse generator. CONSTITUTION:A signal processing circuit 16 performs signal processing by using a clock signal and a frame pulse signal generated based on the clock signal. A clock generating part 12 generates the clock signal, and also, generates an alternating signal provided with a prescribed alternating component based on the clock signal. A signal processing part 22 receives the alternating signal. and also, receives the clock signal as the reception clock signal, and generates the frame pulse signal, and also, acquires a timing period signal by sampling the timing period of the frame pulse signal, and detects the abnormality of the reception clock signal corresponding to the timing period signal and the frame pulse signal. |
