System for the detection and digital transmission of image data, wherein the system comprises: - a camera with a sensor for the digital detection of image data with a camera bus controller and camera connection contacts for a camera USB bus interface, including a USB cable, which has a bus line connection pair for the connection of USB data bus lines for the digital sending of the image data as USB messages, wherein the camera may be activated to detect the image data by the sensor with the aid of a trigger signal (TS, FS) - a transmission device with a transmission USB bus interface comprising a transmission bus controller and transmission connection contacts for a USB cable and having at least one bus line connection pair for the connection of USB data bus lines for the digital receiving of image data as USB messages, wherein the transmission bus controller is designed for the sending of the trigger signal (TS, FS) and the camera bus controller for receiving the trigger signal (TS, FS) and the camera bus controller is designed for activation of the sensor with the aid of the trigger signal (TS, FS), and/or wherein the camera bus controller is designed for sending of the trigger signal and the transmission bus controller for receiving the trigger signal and the transmission bus controller is designed to output the trigger signal, wherein the camera connection contacts and the transmission connection contacts each have a configuration line connection (38, 78) for connection of a configuration line of the USB cable and each have a transmission connection (35, 75) for a transmission line of the USB cable, wherein the transmission line is expediently a line not usable for USB bus messages and the transmission bus controller and the camera bus controller are designed for sending and receiving configuration messages (K1, K2, K3) over the relevant configuration line connection (38, 78), and wherein the USB cable and the camera connection contacts and the transmission connection contacts conform to the USB-3.1 standard or the USB type C standard, characterised in that the transmission connection of the camera connection contacts and the transmission connection of the transmission connection contacts for the transmission line may be configured to transmit the trigger signal (TS, FS) with the aid of the configuration messages (K1, K2, K3). - a camera with a sensor for the digital detection of image data with a camera bus controller and camera connection contacts for a camera USB bus interface, including a USB cable, which has a bus line connection pair for the connection of USB data bus lines for the digital sending of the image data as USB messages, wherein the camera may be activated to detect the image data by the sensor with the aid of a trigger signal (TS, FS) with a sensor for the digital detection of image data with a camera bus controller and camera connection contacts for a camera USB bus interface, including a USB cable, which has a bus line connection pair for the connection of USB data bus lines for the digital sending of the image data as USB messages, wherein the camera may be activated to detect the image data by the sensor with the aid of a trigger signal (TS, FS) - a transmission device with a transmission USB bus interface comprising a transmission bus controller and transmission connection contacts for a USB cable and having at least one bus line connection pair for the connection of USB data bus lines for the digital receiving of image data as USB messages, wherein the transmission bus controller is designed for the sending of the trigger signal (TS, FS) and the camera bus controller for receiving the trigger signal (TS, FS) and the camera bus controller is designed for activation of the sensor with the aid of the trigger signal (TS, FS), and/or wherein the camera bus controller is designed for sending of the trigger signal and the transmission bus controller for receiving the trigger signal and the transmission bus controller is designed to output the trigger signal, wherein the camera connection contacts and the transmission connection contacts each have a configuration line connection (38, 78) for connection of a configuration line of the USB cable and each have a transmission connection (35, 75) for a transmission line of the USB cable, wherein the transmission line is expediently a line not usable for USB bus messages and the transmission bus controller and the camera bus controller are designed for sending and receiving configuration messages (K1, K2, K3) over the relevant configuration line connection (38, 78), and wherein the USB cable and the camera connection contacts and the transmission connection contacts conform to the USB-3.1 standard or the USB type C standard, characterised in that the transmission connection of the camera connection contacts and the transmission connection of the transmission connection contacts for the transmission line may be configured to transmit the trigger signal (TS, FS) with the aid of the configuration messages (K1, K2, K3).