Acoustic playback of a digital audio medium in a motor vehicle

A method is provided for the acoustic playback of a digital audio medium, in particular an audio book, in a motor vehicle, in particular a two- or four-wheeled motor vehicle, at least one sensor, more particularly at least one velocity-, force- or acceleration sensor, used to detect driving parameters of the motor vehicle, being provided in or on the motor vehicle. For the user-friendly playback of a digital audio medium in a motor vehicle: in a first step a first comparison is carried out as to whether the driving parameters detected by the at least one sensor characterize a section of road requiring a higher degree of alertness on the part of the driver of the motor vehicle. If the first comparison is positive, the playback of the audio medium is interrupted in a second step. In a third step, a second comparison is carried out as to whether the driving parameters detected by the at least one sensor characterize a section of road requiring a higher degree of alertness on the part of the driver of the motor vehicle. If the second comparison is positive, the playback of the audio medium is still interrupted in a fourth step. Finally, if the second comparison is negative, the playback of the audio medium is resumed in a fifth step.

BACKGROUND AND SUMMARY OF THE INVENTION

The invention relates in particular to a method for acoustic reproduction of a digital audio medium, in particular an audio book, in a motor vehicle, in particular a two- or four-wheeled motor vehicle, wherein the motor vehicle has at least one sensor provided in or on it for picking up driving parameters of the motor vehicle, such as in particular at least one speed, force or acceleration sensor.

Known methods for reproducing a digital audio medium in a motor vehicle are not very user friendly.

The object of the invention is, in particular, to provide a method for user friendly reproduction of a digital audio medium in a motor vehicle.

This object is achieved in particular by a method for acoustically reproducing a digital audio medium, in particular an audio book, in a motor vehicle, in particular a two- or four-wheeled motor vehicle, wherein the motor vehicle has at least one sensor provided in or on it for picking up driving parameters of the motor vehicle, such as in particular at least one speed, force or acceleration sensor, wherein the method includes the steps of: first comparing whether the driving parameters picked up by the at least one sensor denote a section of road that requires increased attentiveness from the driver of the motor vehicle, and in the event of a positive first comparison, the reproduction of the audio medium is interrupted; second comparing whether the driving parameters picked up by the at least one sensor denote a section of road that requires increased attentiveness from the driver of the motor vehicle, and in the event of a positive second comparison, the reproduction of the audio medium continues to be interrupted, or in the event of a negative second comparison, reproduction of the audio medium is continued.

DETAILED DESCRIPTION OF THE DRAWING

Referring toFIG. 1, the invention provides a method for acoustic reproduction of a digital audio medium, in particular an audio book, in a motor vehicle, in particular a two- or four-wheeled motor vehicle, wherein the motor vehicle has at least one sensor. According to the method, while an audio medium is being played (10), the sensor, provided in or on the vehicle, picks up driving parameters (12) of the motor vehicle, such as in particular at least one speed, force or acceleration sensor.

The invention includes the following steps:

In a first step (14), a first comparison is performed for whether the driving parameters picked up by the at least one sensor denote a section of road that requires increased attentiveness from the driver of the motor vehicle.

In the event of a positive first comparison (Y), the reproduction of the audio medium is interrupted in a second step (16).

In a third step (18), a second comparison is performed for whether the driving parameters picked up by the at least one sensor denote a section of road that requires increased attentiveness from the driver of the motor vehicle.

In the event of a positive second comparison (Y), the reproduction of the audio medium continues to be interrupted (16) in a fourth step.

Finally, in the event of a negative second comparison (N), the reproduction of the audio medium is continued (10) in a fifth step.

In known methods, the audio reproduction in motor vehicles is paused for traffic announcements, for calls using a hands-free system or for announcements by a navigation system. After the respective announcements or calls, the music is continued at the point of interruption. Listening to music in the vehicle can reduce the attentiveness of the driver. This applies in particular for audio books, the majority of which are listened to in motor vehicles. In demanding traffic situations, the driver can no longer follow the content of audio books or is greatly distracted from the traffic situation. Accordingly, when listening to audio books, the driver will frequently rewind after the demanding traffic situation has been overcome. This is not user friendly and distracts the driver additionally.

To avoid these disadvantages, the method according to the invention provides, in summary, for the playback of an audio medium and, in particular, of an audio book to be interrupted at hazard spots, sharp curves, in dense urban traffic or in or during all driving situations that require a high level of concentration from the driver. Subsequently, the driver can concentrate fully on the driving task required of him. Once this has been overcome, the invention allows for the playback of the auto medium or of the audio book to be continued, in particular from the point of the pause.

In a preferred embodiment of the method according to the invention, it is provided for the continuation of the reproduction to take place at a point on the audio medium that has already been played back before the interruption to the reproduction. As a result, it is advantageously possible to prevent the driver from beginning to look for the point that he still has in memory, which can involve considerable distraction from the traffic.

In accordance with one development of the method according to the invention, it is provided for the section of road to be a section of road for which the changes of speed of the motor vehicle over time that are determined by the sensors, such as acceleration and deceleration, braking intensity and/or jerky movements transversely and/or longitudinally with respect to the direction of movement of the vehicle, are such that it is detectable that the section of road requires increased attentiveness from the driver of the motor vehicle.

Alternatively or additionally, one embodiment of the method according to the invention has provision for the motor vehicle to have a navigation system provided in it that determines the current geographical position of the vehicle, and the geographical position is assigned at least one first piece of information about the currently travelled section of road, and that processes static map data and/or dynamic traffic data that the navigation system receives from outside the motor vehicle, wherein the map and/or traffic data denote a section of road that requires increased attentiveness from the driver of the motor vehicle.

In accordance with one development of the method according to the invention, there is provision for an interruption to the reproduction of the audio medium to take place only if additionally, on the basis of the static map data and/or dynamic traffic data, it has been verified that the map and/or traffic data denote a section of road that requires increased attentiveness from the driver of the motor vehicle. Conversely, this may also be provided for the continuation of the reproduction.

These measures can further improve the reliability and hence also the acceptance for use of the method according to the invention.

In accordance with one embodiment of the method according to the invention, the section of road that requires increased attentiveness from the driver of the motor vehicle is a hazard spot, such as in particular roadworks, a sharp curve or a narrowing of the road.

In one embodiment of the method according to the invention, it is provided for the section of road that requires increased attentiveness from the driver of the motor vehicle to be a section of road for which the speed of the motor vehicle determined by the at least one sensor and/or by the navigation system is markedly below the permissible speed for the section of road, such as in the case of a congestion situation.

In accordance with an alternative or complementary embodiment of the method according to the invention, there is provision for the section of road to be defined as a section of road for which the changes of speed of the motor vehicle over time that are determined by the at least one sensor and/or by the navigation system, such as acceleration and deceleration, are such that the section of road requires increased attentiveness from the driver of the motor vehicle.

Such sections of road usually require greater attentiveness from the driver and are therefore preferably fully or partially taken into consideration for the performance of the method according to the invention.

Further, the invention provides a driver assistance system for acoustic reproduction of a digital audio medium, in particular an audio book, in a motor vehicle. The motor vehicle has at least one sensor provided in or on it for picking up driving parameters of the motor vehicle, such as in particular at least one speed, force or acceleration sensor. According to the invention, there is provision for the driver assistance system to perform at least one step of a method according to the invention.

Further, the invention provides a motor vehicle having a driver assistance system according to the invention.

Finally, the invention also provides a computer program product for controlling at least one processor that prompts the execution of at least one step of a method according to the invention.