CN117048535A - Method for controlling vehicle-mounted multimedia playing and vehicle-mounted multimedia system - Google Patents
Method for controlling vehicle-mounted multimedia playing and vehicle-mounted multimedia system Download PDFInfo
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- CN117048535A CN117048535A CN202311253020.5A CN202311253020A CN117048535A CN 117048535 A CN117048535 A CN 117048535A CN 202311253020 A CN202311253020 A CN 202311253020A CN 117048535 A CN117048535 A CN 117048535A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005236 sound signal Effects 0.000 claims abstract description 17
- 238000004590 computer program Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010183 spectrum analysis Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000013527 convolutional neural network Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- Engineering & Computer Science (AREA)
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention relates to a method for controlling vehicle-mounted multimedia playing, which comprises the following steps: detecting the signal intensity of a received first multimedia signal, and judging whether the signal intensity of the first multimedia signal is lower than a preset first signal intensity threshold value (S1); if the sound signal is lower than the first multimedia signal, judging whether noise exists in the first multimedia content played based on the first multimedia signal or not based on the analysis processing of the detected sound signal in the vehicle cabin (S2); if noise is present, the playing of the first multimedia content is stopped and a preset second multimedia content is played (S3). The invention also relates to an on-board multimedia system, a vehicle and a computer program product. According to the invention, the trouble of the noise on the personnel in the vehicle can be avoided, and meanwhile, the unnecessary interruption of the watching or listening of the multimedia content by the personnel in the vehicle can be avoided as much as possible by means of the credibility check, thereby effectively improving the user experience of the vehicle-mounted multimedia system.
Description
Technical Field
The present invention relates to the field of vehicle-mounted multimedia, in particular to a method for controlling the playback of vehicle-mounted multimedia, a vehicle-mounted multimedia system, a vehicle comprising a vehicle-mounted multimedia system according to the invention, and a computer program product for at least assisted implementation of the steps of the method according to the invention.
Background
Currently, most vehicles are equipped with an on-board multimedia system that generally supports playing multimedia content from a variety of audio signal sources, including, for example, on-board radios, CD or MP3 players, and other information or entertainment devices. During the running process of the vehicle, the vehicle-mounted host can process the radio signal received by the vehicle-mounted radio in real time, output the processed signal to the vehicle-mounted loudspeaker and play the corresponding multimedia content.
However, when a vehicle is driven into a weak signal area (e.g., a tunnel section or an underground parking garage, etc.), the intensity of a radio signal received through an on-vehicle radio is too weak, thereby generating a lot of noise when an audio program is played, which greatly affects the experience of the on-vehicle multimedia system.
Therefore, how to improve the playing quality of the vehicle-mounted multimedia system is a technical problem to be solved at present.
Disclosure of Invention
It is an object of the present invention to provide a method for controlling the playback of an in-vehicle multimedia system, a vehicle comprising an in-vehicle multimedia system according to the present invention, and a computer program product for solving at least partly the problems of the prior art.
According to a first aspect of the present invention, there is provided a method for controlling an in-vehicle multimedia playing, wherein the method comprises:
step S1: detecting the signal intensity of a received first multimedia signal, and judging whether the signal intensity of the first multimedia signal is lower than a preset first signal intensity threshold value or not;
step S2: if the signal intensity of the first multimedia signal is lower than a preset first signal intensity threshold value, judging whether noise exists in first multimedia content played based on the first multimedia signal or not based on analysis processing of the detected sound signal in the vehicle cabin; and
step S3: and if the first multimedia content has noise, stopping playing the first multimedia content and playing the preset second multimedia content.
The core concept of the invention is as follows: after the vehicle enters the weak signal area, the reliability check of the noise is executed based on the analysis processing of the sound signal in the vehicle cabin under the condition that the noise appears in the played multimedia content, and the preset second multimedia content is switched to play under the condition that the check result is reliable. According to the invention, the trouble of the noise on the personnel in the vehicle can be avoided, and meanwhile, the unnecessary interruption of the watching or listening of the multimedia content by the personnel in the vehicle can be avoided as much as possible by means of the credibility check, thereby effectively improving the user experience of the vehicle-mounted multimedia system.
According to an alternative embodiment of the invention, the noise in the first multimedia content may be identified by a spectral analysis of the detected sound signal in the cabin. Alternatively, the spectral analysis for identifying the noise can be implemented, for example, by means of a convolutional neural network.
According to a further alternative embodiment of the present invention, the received first multimedia signal may comprise, for example, a frequency modulated broadcast signal, an amplitude modulated broadcast signal, a digital audio broadcast signal, a digital video broadcast signal, and/or a mobile network signal, etc.
According to another alternative embodiment of the present invention, not only the second multimedia content pre-stored in the vehicle may be set based on the user preference information, but also the second multimedia content pre-stored in the mobile terminal capable of establishing a short-range wireless communication connection with the vehicle may be set based on the user preference information. Alternatively, the second multimedia content may comprise one or more audio items, wherein the audio items may comprise, for example, songs, melodies, and/or language audio programs, etc.
According to a further alternative embodiment of the present invention, the method may further comprise:
step S4: and sending notification information about the low signal strength of the first multimedia signal to a user in the vehicle cabin.
According to a further alternative embodiment of the present invention, the method may further comprise:
step S5: detecting the signal intensity of a received first multimedia signal, and judging whether the signal intensity of the first multimedia signal is higher than a preset second signal intensity threshold value or not; and
step S6: and stopping playing the second multimedia content if the signal strength of the first multimedia signal is higher than a preset second signal strength threshold value, and resuming playing the first multimedia content based on the received first multimedia signal.
According to a second aspect of the present invention, there is provided an in-vehicle multimedia system, wherein the in-vehicle multimedia system comprises:
-an on-board multimedia unit configured for receiving a first multimedia signal and playing a first multimedia content based on the received first multimedia signal, and/or playing a preset second multimedia content;
-a signal detection unit configured for detecting a signal strength of the received first multimedia signal;
-a sound detection unit configured for detecting a sound signal within the cabin; and
-a control unit configured for performing the method according to the invention.
According to a third aspect of the present invention there is provided a vehicle comprising an on-board multimedia system according to the present invention.
According to a fourth aspect of the present invention, there is provided a computer program product, e.g. a computer-readable program carrier, containing or storing computer program instructions which, when executed by a processor, at least assist in carrying out the steps of the method according to the present invention.
Drawings
The principles, features and advantages of the present invention may be better understood by describing the present invention in more detail with reference to the drawings. The drawings show:
FIG. 1 illustrates a workflow diagram of a method for controlling on-board multimedia playback according to an exemplary embodiment of the present invention;
fig. 2 illustrates a workflow diagram of a method for controlling an in-vehicle multimedia play according to another exemplary embodiment of the present invention;
fig. 3 illustrates a workflow diagram of a method for controlling an in-vehicle multimedia play according to another exemplary embodiment of the present invention; and
fig. 4 shows a block diagram of a system for controlling multimedia playback on board a vehicle according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and a plurality of exemplary embodiments. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 illustrates a workflow diagram of a method for controlling in-vehicle multimedia playback according to an exemplary embodiment of the present invention. The following exemplary examples describe the method according to the invention in more detail.
The method may comprise steps S1 to S3. In step S1, the signal strength of the received first multimedia signal is detected, and it is determined whether the signal strength of the first multimedia signal is lower than a preset first signal strength threshold. In the present embodiment of the invention, the in-vehicle multimedia system 1 comprises, inter alia, an in-vehicle multimedia unit 11 configured for receiving a first multimedia signal and playing back a first multimedia content based on the received first multimedia signal. The in-vehicle multimedia unit 11 comprises, for example, an in-vehicle radio or other in-vehicle audio player. Here, the first multimedia signal received through the in-vehicle multimedia unit 11 may include not only broadcast signals such as a frequency modulation broadcast signal, an amplitude modulation broadcast signal, a digital audio broadcast signal, and/or a digital video broadcast signal, on the basis of which a corresponding broadcast program can be played as the first multimedia content, but also mobile network signals transmitted through, for example, the global system for mobile communications GSM, the universal mobile telecommunications system UMTS, the 3G communication network, the 4G communication network, the 5G communication network, and the like, on the basis of which an audio program or a video program or the like buffered and/or downloaded from the server can be played as the first multimedia content.
A weak signal region is often encountered during driving of a vehicle, and may be a tunnel section, a mountain section, an underground garage, or the like, which causes difficulty in signal reception. After the vehicle enters the weak signal region, the signal strength of the first multimedia signal received through the vehicle-mounted multimedia unit 11 is detected by means of the signal detection unit 12, and it is judged whether the signal strength of the first multimedia signal is lower than a preset first signal strength threshold. In the sense of the present invention, the setting of the first signal strength threshold is based on the following principle: when the signal strength of the first multimedia signal is lower than the first signal strength threshold, human-recognizable noise exists in the first multimedia content played by the vehicle-mounted loudspeaker based on the first multimedia signal, wherein the noise is especially noise with equal noise power spectral densities, namely random noise with constant power spectral densities, contained in frequency bands with equal bandwidths in a specific frequency range. It will be appreciated that the noise may seriously affect the experience of the first multimedia content and may cause discomfort or even annoyance to the person in the vehicle.
If the signal strength of the first multimedia signal is lower than a preset first signal strength threshold, in step S2, it is determined whether noise exists in the first multimedia content played based on the first multimedia signal based on the analysis processing of the detected sound signal in the vehicle cabin. Here, the sound signal in the cabin can be detected by the sound detection unit 13, which sound detection unit 13 comprises, for example, a microphone arranged in the cabin. Noise in the first multimedia content may be identified by spectral analysis of the detected sound signal in the cabin. It will be appreciated that the frequency spectrum of noise generated by the speaker based on the first multimedia signal having a lower signal strength is within a specific broad frequency spectrum range, which is a large difference from the broad frequency spectrum range in which the frequency spectrum of sound emitted by an in-vehicle person or other vehicle component (e.g., engine) is located. For example, the detected sound signals in the vehicle cabin may be subjected to a spectral analysis by means of a convolutional neural network, which has been trained in advance by a sufficient number of relevant sound signals and thus the noise generated by the loudspeaker may be robustly identified based on the spectral analysis, and the noise present in the first multimedia content may be identified based on the result of the spectral analysis. In this way, the signal strength determination result of step S1 can be subjected to the reliability check, thereby improving the determination accuracy.
If the first multimedia content has noise, that is, if the result of the credibility check is credibility, in step S3, the playing of the first multimedia content may be stopped, and a preset second multimedia content may be played. Here, the second multimedia content pre-stored in the vehicle may be set based on the user preference information, wherein the second multimedia content includes audio items including songs, melodies, and/or language audio programs, etc. Alternatively, the user may set only one audio item based on the preference information and play the audio item in a loop; the user may also set a plurality of audio items based on the preference information to form a playlist, and play the audio items in the order of the playlist.
In view of the fact that the short-range wireless communication technology (e.g., bluetooth technology) has been popularly applied to the in-vehicle apparatus, it is also possible to optionally establish a short-range wireless communication connection of the in-vehicle system with a mobile terminal (e.g., a smart phone, a tablet computer, etc.) of an in-vehicle user after stopping playing the first multimedia content, and play one or more audio items set and pre-stored in the mobile terminal based on user preference information.
According to the embodiment of the invention, after a vehicle enters a weak signal area, the reliability check of the noise is executed based on the analysis processing of the sound signal in the vehicle cabin under the condition that the noise appears in the played multimedia content, and the preset second multimedia content is switched to play under the condition that the check result is reliable, so that the trouble of the noise on the personnel in the vehicle can be avoided, meanwhile, the watching or listening of the multimedia content by the personnel in the vehicle is avoided as much as possible by means of the reliability check, and the user experience of the vehicle-mounted multimedia system is effectively improved.
Fig. 2 shows a workflow diagram of a method for controlling an in-vehicle multimedia play according to another exemplary embodiment of the present invention. Only the differences from the embodiment shown in fig. 1 are explained below, and the same steps are not repeated for the sake of brevity.
The method may further comprise step S4. In step S4, a notification message about the low signal strength of the first multimedia signal may be sent to a user (including a driver and/or a passenger) in the cabin, thereby informing that the vehicle is currently driving into a weak signal area and thus that the first multimedia content cannot be continuously played. The corresponding acoustic notification information may be transmitted to the driver and/or the passenger in the vehicle cabin by, for example, an in-vehicle voice device, or the corresponding optical notification information may be transmitted to the driver and/or the passenger in the vehicle cabin by, for example, a center control display, a dashboard, a head-up display, or the like. By the method, the doubt that the multimedia content cannot be normally played by personnel in the vehicle can be timely eliminated, and therefore user experience of the vehicle-mounted multimedia system is further improved.
Fig. 3 shows a workflow diagram of a method for controlling an in-vehicle multimedia play according to another exemplary embodiment of the present invention. Only the differences from the embodiment shown in fig. 1 are explained below, and the same steps are not repeated for the sake of brevity.
The method may further comprise steps S5 and S6. In step S5, the signal strength of the received first multimedia signal is detected, and it is determined whether the signal strength of the first multimedia signal is higher than a preset second signal strength threshold. In the presently alternative embodiment of the present invention, the signal strength of the received first multimedia signal may be detected in spite of having stopped playing the first multimedia content, thereby judging whether the vehicle exits the weak signal area. The second signal strength threshold may be set to be the same as the first signal strength threshold or may be set to be different from the first signal strength threshold.
If the signal strength of the first multimedia signal is higher than a preset second signal strength threshold, which means that the vehicle has driven out of the weak signal area, the playing of the second multimedia content may be stopped and the playing of the first multimedia content may be resumed based on the received first multimedia signal in step S6. In particular, the playback of the first multimedia content can be resumed automatically on the basis of the previous playback setting parameters of the user with respect to the first multimedia content, so that the cumbersome process of setting the playback parameters repeatedly by the user is avoided.
In addition, it should be noted that the sequence numbers of the steps described herein do not necessarily represent a sequential order, but are merely a reference number, and the order may be changed according to circumstances as long as the technical object of the present invention can be achieved.
Fig. 4 shows a block diagram of a system for controlling multimedia playback on board a vehicle according to an exemplary embodiment of the present invention.
As shown in fig. 4, the in-vehicle multimedia system 1 may include the following components:
-an in-vehicle multimedia unit 11 configured for receiving a first multimedia signal and playing a first multimedia content based on the received first multimedia signal, and/or playing a preset second multimedia content, wherein the in-vehicle multimedia unit 11 comprises, for example, an in-vehicle radio or other in-vehicle audio player or the like;
a signal detection unit 12 configured to detect a signal strength of the received first multimedia signal;
a sound detection unit 13 configured for detecting a sound signal within the cabin, wherein the sound detection unit 13 comprises, for example, a microphone or the like arranged within the cabin; and
a control unit 14 configured for performing the method according to the invention.
Although specific embodiments of the invention have been described in detail herein, they are presented for purposes of illustration only and are not to be construed as limiting the scope of the invention. Various alternatives and modifications can be devised without departing from the spirit and scope of the invention.
Claims (10)
1. A method for controlling in-vehicle multimedia playback, wherein the method comprises:
step S1: detecting the signal intensity of a received first multimedia signal, and judging whether the signal intensity of the first multimedia signal is lower than a preset first signal intensity threshold value or not;
step S2: if the signal intensity of the first multimedia signal is lower than a preset first signal intensity threshold value, judging whether noise exists in first multimedia content played based on the first multimedia signal or not based on analysis processing of the detected sound signal in the vehicle cabin; and
step S3: and if the first multimedia content has noise, stopping playing the first multimedia content and playing the preset second multimedia content.
2. The method of claim 1, wherein noise in the first multimedia content is identified by spectral analysis of the detected sound signal within the cabin.
3. A method according to any of the preceding claims, wherein the spectral analysis for identifying the noise is implemented by means of a convolutional neural network.
4. The method according to any of the preceding claims, wherein the received first multimedia signal comprises a frequency modulated broadcast signal, an amplitude modulated broadcast signal, a digital audio broadcast signal, a digital video broadcast signal and/or a mobile network signal.
5. The method according to any of the preceding claims, wherein the second multimedia content pre-stored in-vehicle is set based on user preference information and/or pre-stored in a mobile terminal capable of establishing a short range wireless communication connection with a vehicle, wherein the second multimedia content comprises one or more audio items comprising songs, melodies and/or language audio programs.
6. The method according to any of the preceding claims, wherein the method further comprises:
step S4: and sending notification information about the low signal strength of the first multimedia signal to a user in the vehicle cabin.
7. The method according to any of the preceding claims, wherein the method further comprises:
step S5: detecting the signal intensity of a received first multimedia signal, and judging whether the signal intensity of the first multimedia signal is higher than a preset second signal intensity threshold value or not; and
step S6: and stopping playing the second multimedia content if the signal strength of the first multimedia signal is higher than a preset second signal strength threshold value, and resuming playing the first multimedia content based on the received first multimedia signal.
8. An in-vehicle multimedia system (1), wherein the in-vehicle multimedia system (1) comprises the following components:
an in-vehicle multimedia unit (11) configured to receive a first multimedia signal and play a first multimedia content based on the received first multimedia signal, and/or play a preset second multimedia content;
a signal detection unit (12) configured to detect a signal strength of the received first multimedia signal;
a sound detection unit (13) configured to detect a sound signal in the cabin; and
control unit (14) configured for performing the method according to any of the preceding claims.
9. A vehicle comprising an in-vehicle multimedia system (1) according to claim 8.
10. A computer program product, such as a computer-readable program carrier, comprising or storing computer program instructions which, when executed by a processor, at least in addition, implement the steps of the method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311253020.5A CN117048535A (en) | 2023-09-26 | 2023-09-26 | Method for controlling vehicle-mounted multimedia playing and vehicle-mounted multimedia system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311253020.5A CN117048535A (en) | 2023-09-26 | 2023-09-26 | Method for controlling vehicle-mounted multimedia playing and vehicle-mounted multimedia system |
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| Publication Number | Publication Date |
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| CN117048535A true CN117048535A (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311253020.5A Pending CN117048535A (en) | 2023-09-26 | 2023-09-26 | Method for controlling vehicle-mounted multimedia playing and vehicle-mounted multimedia system |
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| Country | Link |
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| CN (1) | CN117048535A (en) |
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2023
- 2023-09-26 CN CN202311253020.5A patent/CN117048535A/en active Pending
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