| 摘要 |
A first circuit on a signal transmission side includes first and second semiconductor switch elements that transmit the reference potential or power supply voltage of the first circuit to a second circuit by being alternatively driven so as to be turned on and off in accordance with a multiple of signals. Also, the second circuit on a signal reception side includes a voltage conversion circuit, including an in-phase noise filter that eliminates in-phase noise superimposed on the voltage transmitted via the first and second semiconductor switch elements, that generates first and second pulse signals in accordance with the transmitted voltage, a latch circuit that latches each of the first and second pulse signals with the first and second pulse signals as a clock, and a signal analysis circuit that analyzes the first and second pulse signals latched by the latch circuit, and generates an output signal in accordance with the category of the multiple of signals. |
