An integrated circuit transformer includes a first conductive segment, a second conductive segment, a fifth conductive segment, and a sixth conductive segment, all disposed inside a first insulating layer. A digital camera captures an input video stream comprising images of a surrounding environment limited by a field of view of the camera. It sequentially arbitrates a first hierarchy bus master of which requests are urgent, a second hierarchy bus master that requests data processing in real time, and a third hierarchy bus master that is neither a first hierarchy bus master nor a second hierarchy bus master sequentially.