| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal processing device which, while allowing monitoring of an SDI signal by a constitution with a saved manufacturing cost, makes an effective use of the result of the monitoring.SOLUTION: A signal processing device which is connected to an external device for outputting an SDI signal, supplies power to the external device, and receives an input of the SDI signal from the external device comprises: a detector circuit for detecting the SDI signal by using a diode; and a supply stop part for stopping the supply of power in response to the level of the SDI signal detected by the detection.</p> |
