SIGNAL PROCESSING DEVICE, AND VEHICLE AND METHOD INCLUDING SAME

According to an embodiment disclosed in this document, a signal processing device may include a main control unit, an auxiliary control unit electrically connected to the main control unit, and an end device electrically connected to the auxiliary control unit, in which the main control unit may transmit a wake-up signal to the auxiliary control unit when power is supplied, and the auxiliary control unit may bypass the wake-up signal and transmit the wake-up signal to the end device.