Abstract: An audio output system for a vehicle. The audio output system includes a volume setting device for setting a volume of an audio signal, an audio input for an audio input signal from an audio source, a warning tone device for providing a warning tone signal, an audio-level measuring device for measuring the audio level at the audio input, and a control unit. The audio-level measuring device is configured to limit the maximum audio level of the audio input signal to a predefined first threshold value as a function of the set volume. The control unit is configured to control an audio output signal on the basis of the warning tone signal, the audio input signal and the set volume, and to output an audible or visual notification if the audio input signal present at the audio input has no audio level.

Abstract: A processing unit for an audio system of a vehicle comprises a first processing node, a second processing node and a program memory. The program memory may be overwritten by the first processing node and by the second processing node. After the processing unit has started up the first processing node may compute and write to the program memory an audio output. The processing unit may also perform a handover of the computing of the audio output from the first processing node to the second processing node when the first processing node has overwritten the program memory up to a predefined point and when the second processing node is operational. The second processing node is designed to compute the audio output after the handover, and to write this audio output to the program memory.

Abstract: An audio output system for a vehicle. The audio output system includes a volume setting device for setting a volume of an audio signal, an audio input for an audio input signal from an audio source, a warning tone device for providing a warning tone signal, an audio-level measuring device for measuring the audio level at the audio input, and a control unit. The audio-level measuring device is configured to limit the maximum audio level of the audio input signal to a predefined first threshold value as a function of the set volume. The control unit is configured to control an audio output signal on the basis of the warning tone signal, the audio input signal and the set volume, and to output an audible or visual notification if the audio input signal present at the audio input has no audio level.

Abstract: A method, apparatus and system are disclosed for allowing prescribed components in the system to be started with minimal delay, wherein a multimedia system for a motor vehicle, which comprises a control unit and a plurality of prescribed components that can be selected and started by a user. The operating programs that are associated with at least one first component are provided with a greater proportion of the total available computational resources required for their execution. As a result, it becomes possible to use the at least one first component quite soon after the start-up phase of the system has begun.

Abstract: A method, apparatus and system are disclosed for allowing prescribed components in the system to be started with minimal delay, wherein a multimedia system for a motor vehicle, which comprises a control unit and a plurality of prescribed components that can be selected and started by a user. The operating programs that are associated with at least one first component are provided with a greater proportion of the total available computational resources required for their execution. As a result, it becomes possible to use the at least one first component quite soon after the start-up phase of the system has begun.