CN113542083A - Information transmission method and device, readable storage medium and vehicle-mounted system - Google Patents
Information transmission method and device, readable storage medium and vehicle-mounted system Download PDFInfo
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- CN113542083A CN113542083A CN202110604195.0A CN202110604195A CN113542083A CN 113542083 A CN113542083 A CN 113542083A CN 202110604195 A CN202110604195 A CN 202110604195A CN 113542083 A CN113542083 A CN 113542083A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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Abstract
The invention discloses an information transmission method, which comprises the following steps: when the vehicle-mounted entertainment system detects that a functional program is started, the vehicle-mounted entertainment system acquires text information generated when the functional program runs in real time and sends an information transmission request to the combination instrument; the combination meter generates a corresponding information transmission response according to the information transmission request and feeds the information transmission response back to the vehicle-mounted entertainment system; and the vehicle-mounted entertainment system receives the information transmission response and transmits the text information corresponding to the functional program to the combination meter. The invention solves the problem that the load rate of the CAN bus of the automobile is too high because the CAN bus is occupied by the vehicle-mounted entertainment system and the combination instrument during information transmission in the prior art.
Description
Technical Field
The invention relates to the technical field of automobile networking, in particular to an information transmission method, an information transmission device, a readable storage medium and an on-board system.
Background
With the rapid development of the automobile industry technology, modern automobiles are continuously developed in the direction of electronization, networking and intellectualization. For the new generation of user group, not only the practicability of the automobile is only concerned, but also the entertainment and intelligence become the important research targets of the automobile. The functional interaction between the vehicle-mounted entertainment system integrating a large number of entertainment and information display functions and the combination instrument is an important component of the entertainment and intelligence of the automobile.
In a traditional automobile application scenario, a user can use various functions such as audio, telephone, phonebook, navigation and the like on a vehicle-mounted entertainment system as required; however, when the automobile is in a driving state, it is often a dangerous driving behavior that the user operates the in-vehicle entertainment system, and therefore, most automobiles can transmit the text information between the in-vehicle entertainment system and the combination meter in real time, and the user can directly transmit the information on the in-vehicle entertainment system on the combination meter to avoid the risk.
However, the text information transmitted between the existing vehicle-mounted entertainment system and the combination instrument is usually based on the CAN signal sent periodically, and under the condition that information transmission is not needed between the vehicle-mounted entertainment system and the combination instrument, the CAN signal CAN still be sent and received, and a CAN bus is occupied, so that the load rate of the automobile CAN bus is too high.
Disclosure of Invention
In view of the above, the present invention provides an information transmission method, an information transmission device, a readable storage medium, and a vehicle-mounted system, and aims to solve the problem that a vehicle-mounted entertainment system and a combination meter in the prior art occupy a CAN bus when performing information transmission, which results in an excessively high load rate of the CAN bus of an automobile.
The embodiment of the invention is realized in such a way that an information transmission method comprises the following steps:
when the vehicle-mounted entertainment system detects that a functional program is started, the vehicle-mounted entertainment system acquires text information generated when the functional program runs in real time and sends an information transmission request to the combination instrument;
the combination meter generates a corresponding information transmission response according to the information transmission request and feeds the information transmission response back to the vehicle-mounted entertainment system;
and the vehicle-mounted entertainment system receives the information transmission response and transmits the text information corresponding to the functional program to the combination meter.
Further, in the above information transmission method, the functional programs include an audio program, a telephone program, a phonebook program, and a navigation program.
Further, in the above information transmission method, when the vehicle-mounted entertainment system detects that the function program is started, the vehicle-mounted entertainment system obtains the text information generated when the function program runs in real time, and sends an information transmission request to the combination meter, the step includes:
and judging whether the functional program contains character information, and when the functional program does not contain the character information, stopping sending the information transmission request by the vehicle-mounted entertainment system.
Further, in the information transmission method, the step of receiving the information transmission response by the in-vehicle entertainment system and transmitting the text information corresponding to the function program to the combination meter includes:
and when the vehicle-mounted entertainment system does not receive the information transmission response within the preset time, the vehicle-mounted entertainment system sends the information transmission request to the combination meter at a preset speed period.
Further, the information transmission method described above, wherein, after the step of receiving the information transmission response by the in-vehicle entertainment system and transmitting the text information corresponding to the function program to the combination meter, includes:
when the vehicle-mounted entertainment system detects that the functional program is in the disabled state, the vehicle-mounted entertainment system stops sending the information transmission request to the combination meter.
Further, in the information transmission method, the text information includes a plurality of sets of sub information of different types, and the step of receiving the information transmission response by the in-vehicle entertainment system and transmitting the text information corresponding to the function program to the combination meter includes:
and the vehicle-mounted entertainment system sequentially sends the sub-information to the combination instrument according to a preset sequence.
Another object of an embodiment of the present invention is to provide an information transmission apparatus, including:
the vehicle-mounted entertainment system is used for acquiring text information generated when a functional program runs in real time when the starting of the functional program is detected, sending an information transmission request to a combination instrument, receiving an information transmission response and transmitting the text information corresponding to the functional program to the combination instrument;
and the combination meter is used for generating a corresponding information transmission response according to the information transmission request and feeding back the information transmission response to the vehicle-mounted entertainment system.
Further, in the above information transmission apparatus, the function program includes an audio program, a telephone program, a phonebook program, and a navigation program.
Further, the above-mentioned information transmission device, wherein the in-vehicle entertainment system includes:
and the judging module is used for judging whether the functional program contains the character information or not, and stopping sending the information transmission request when the functional program does not contain the character information.
Further, the above-mentioned information transmission device, wherein the vehicle-mounted entertainment system further includes:
and the sending module is used for sending the information transmission request to the combination meter at a preset rate cycle when the information transmission response is not received within preset time.
Further, in the above information transmission device, the text information includes a plurality of sets of sub information of different types, and the in-vehicle entertainment system further includes:
and the transmission module is used for sequentially transmitting the sub information to the combination instrument according to a preset sequence.
Further, the above-mentioned information transmission device, wherein the vehicle-mounted entertainment system further includes:
and the disabling module is used for stopping sending the information transmission request to the combination meter when the functional program is detected to be in a disabled state.
It is a further object of embodiments of the invention to provide a readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the method as set forth above.
It is a further object of embodiments of the invention to provide an in-vehicle system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method as described above when executing the program.
According to the embodiment of the invention, whether the vehicle-mounted entertainment system and the combination instrument need to carry out information interaction is judged by detecting the starting of the function program through the vehicle-mounted entertainment system, the text information generated in the running of the function program is obtained in real time, the information transmission request is sent to the combination instrument, after the combination instrument feeds back the information transmission response to the vehicle-mounted entertainment system according to the information transmission request, the vehicle-mounted entertainment system transmits the text information corresponding to the function program to the combination instrument, and only after the function program is started, the vehicle-mounted entertainment system and the combination instrument carry out information transmission, so that the vehicle CAN bus is prevented from being excessively occupied by the vehicle-mounted entertainment system and the combination instrument due to the real-time information transmission, and the load ratio of the CAN bus is reduced.
Drawings
Fig. 1 is a flowchart of an information transmission method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method for transmitting information according to a second embodiment of the present invention;
FIG. 3 is a block diagram of an information transmission apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of the in-vehicle entertainment system of fig. 3.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
Referring to fig. 1, an information transmission method according to a first embodiment of the present invention is shown, and the method specifically includes steps S10-S12.
And step S10, when the vehicle-mounted entertainment system detects that the function program is started, the vehicle-mounted entertainment system acquires the text information generated when the function program runs in real time and sends an information transmission request to the combination meter.
Specifically, the functional program includes, but is not limited to, an audio program, a telephone program, a phone book program, and a navigation program, and the starting of the functional program generally means that the functional program is currently being used by the in-vehicle entertainment system, and when the starting of the functional program is detected, text information generated when the functional program is running is obtained in real time, the text information generally refers to information that can be displayed by the in-vehicle display system, taking the audio program as an example, the text information includes, but is not limited to, a song name, a program name, a singer name, a program origin, broadcast information, and an audio total duration, taking the telephone program as an example, the text information may include, a caller, a telephone number, and a call time, that is, when the audio program is being used, the in-vehicle entertainment system needs to obtain text information such as the song name, the program name, the singer name, the program origin, the broadcast information, and the audio total duration in the current audio program, and sends an information transmission request to the combination meter.
It should be noted that the vehicle-mounted entertainment system and the combination meter perform information transmission based on the communication message of the CAN bus in the vehicle, and the information transmission request is a control frame sent by the vehicle-mounted entertainment system.
And step S11, the combination meter generates a corresponding information transmission response according to the information transmission request, and feeds the information transmission response back to the vehicle-mounted entertainment system.
The combination instrument panel generates a corresponding information transmission response according to the information transmission request sent by the vehicle-mounted entertainment system, feeds the information transmission response back to the vehicle-mounted entertainment system, and confirms whether the vehicle-mounted entertainment system can transmit information to the combination instrument, wherein the information transmission response is a flow control frame sent by the combination instrument.
And step S12, the vehicle-mounted entertainment system receives the information transmission response and transmits the text information corresponding to the function program to the combination meter.
The vehicle-mounted entertainment system receives an information transmission response fed back by the combination instrument, confirms that the acquired text information is transmitted to the combination instrument, specifically, taking an audio program as an example, the vehicle-mounted entertainment system receives the information transmission response, transmits the acquired text information such as song titles, program titles, singer titles, program titles, broadcast information, total audio duration and the like generated during the operation of the current audio program to the combination instrument, and more specifically, transmits the text information to the combination instrument in a data frame mode.
To sum up, the embodiment of the invention judges whether the vehicle-mounted entertainment system and the combination instrument need to perform information interaction by detecting the starting of the function program through the vehicle-mounted entertainment system, acquires the character information generated in the running of the function program in real time, sends the information transmission request to the combination instrument, transmits the character information corresponding to the function program to the combination instrument after the combination instrument feeds back the information transmission response to the vehicle-mounted entertainment system according to the information transmission request, and transmits the information through the vehicle-mounted entertainment system and the combination instrument only after the function program is started, thereby preventing the vehicle-mounted entertainment system and the combination instrument from excessively occupying the automobile CAN bus due to the real-time information transmission, and reducing the load rate of the CAN bus.
Example two
Referring to fig. 2, an information transmission method according to a second embodiment of the present invention is shown, which includes steps S20-S22.
And step S20, when the vehicle-mounted entertainment system detects that the function program is started, the vehicle-mounted entertainment system acquires the text information generated when the function program runs in real time and sends an information transmission request to the combination meter.
Specifically, whether the functional program contains the text information or not is judged, and when the functional program does not contain the text information, the vehicle-mounted entertainment system stops sending the information transmission request.
It can be understood that when the function program is started, there is a condition that no text information is actually generated even if the current function program is in a starting operation state, and the driver does not need to check the information on the current vehicle-mounted entertainment system through the combination meter, that is, the combination meter does not need to feed back information transmission response to the vehicle-mounted entertainment system to request the transmission of the text information.
And step S21, the combination meter generates a corresponding information transmission response according to the information transmission request, and feeds the information transmission response back to the vehicle-mounted entertainment system.
And step S22, the vehicle-mounted entertainment system receives the information transmission response and transmits the text information corresponding to the function program to the combination meter.
Specifically, the text information includes a plurality of groups of sub information of different types, the vehicle-mounted entertainment system sequentially sends the plurality of sub information to the combination meter according to a preset sequence, taking an audio program as an example, the text information includes a plurality of sub information such as song titles, singer titles, total audio duration and the like, when the embodiment is specifically implemented, the plurality of sub information such as song titles, singer titles, total audio duration and the like can be sequentially sent according to the preset sequence, and another group of sub information is sent after one group of sub information is sent.
And step S23, when the vehicle-mounted entertainment system does not receive the information transmission response within the preset time, the vehicle-mounted entertainment system sends the information transmission request to the combination meter at the preset speed period.
Specifically, when the vehicle-mounted entertainment system and the combination instrument perform information transmission requests and information transmission responses, the conditions that the integrity of the information transmission requests and the path of the information transmission requests are affected due to poor signal transmission exist, and when the vehicle-mounted entertainment system does not receive the information transmission responses within the preset time, the vehicle-mounted entertainment system sends the information transmission requests to the combination instrument at the preset speed cycle, so that the vehicle-mounted entertainment system is ensured to receive the information transmission requests sent by the combination instrument, and the information transmission is ensured to be performed.
And step S24, when the vehicle-mounted entertainment system detects that the function program is in the forbidden state, the vehicle-mounted entertainment system stops sending the information transmission request to the combination meter.
It CAN be understood that when the functional program of the current starting operation is converted from the starting operation state to the forbidden state, the vehicle-mounted entertainment system stops sending the request to the combination meter so as to reduce the load rate of the vehicle CAN bus.
To sum up, the embodiment of the invention judges whether the vehicle-mounted entertainment system and the combination instrument need to perform information interaction by detecting the starting of the function program through the vehicle-mounted entertainment system, acquires the character information generated in the running of the function program in real time, sends the information transmission request to the combination instrument, transmits the character information corresponding to the function program to the combination instrument after the combination instrument feeds back the information transmission response to the vehicle-mounted entertainment system according to the information transmission request, and transmits the information through the vehicle-mounted entertainment system and the combination instrument only after the function program is started, thereby preventing the vehicle-mounted entertainment system and the combination instrument from excessively occupying the automobile CAN bus due to the real-time information transmission, and reducing the load rate of the CAN bus.
EXAMPLE III
Referring to fig. 3, an information transmission apparatus according to an embodiment of the present invention is shown, the information transmission apparatus including:
the vehicle-mounted entertainment system 100 is used for acquiring text information generated when a function program runs in real time when the function program is detected to be started, sending an information transmission request to a combination instrument, receiving an information transmission response, and transmitting the text information corresponding to the function program to the combination instrument;
and the combination meter 200 is used for generating a corresponding information transmission response according to the information transmission request and feeding back the information transmission response to the vehicle-mounted entertainment system.
Further, in the above information transmission apparatus, the function program includes an audio program, a telephone program, a phonebook program, and a navigation program.
Further, the above-mentioned information transmission device, wherein, as shown in fig. 4, the in-vehicle entertainment system 100 includes:
the determining module 110 is configured to determine whether the functional program contains text information, and stop sending the information transmission request when the functional program does not contain the text information.
Further, the above-mentioned information transmission device, wherein the vehicle-mounted entertainment system 100 further includes:
a sending module 120, configured to send the information transmission request to the combination meter at a preset rate cycle when the information transmission response is not received within a preset time.
Further, in the above information transmission apparatus, the text information includes a plurality of sets of sub information of different types, and the in-vehicle entertainment system 100 further includes:
and the transmission module 130 is configured to sequentially send the sub information to the combination meter according to a preset sequence.
Further, the above-mentioned information transmission device, wherein the vehicle-mounted entertainment system 100 further includes:
a disabling module 140, configured to stop sending the information transmission request to the combination meter when it is detected that the functional program is in a disabled state.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
An embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method described in any one of embodiments 1 to 2 above.
The embodiment of the present invention further provides an on-board system, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the steps of the method described in any one of embodiments 1 to 2 above are implemented.
To sum up, the embodiment of the invention judges whether the vehicle-mounted entertainment system and the combination instrument need to perform information interaction by detecting the starting of the function program through the vehicle-mounted entertainment system, acquires the character information generated in the running of the function program in real time, sends the information transmission request to the combination instrument, transmits the character information corresponding to the function program to the combination instrument after the combination instrument feeds back the information transmission response to the vehicle-mounted entertainment system according to the information transmission request, and transmits the information through the vehicle-mounted entertainment system and the combination instrument only after the function program is started, thereby preventing the vehicle-mounted entertainment system and the combination instrument from excessively occupying the automobile CAN bus due to the real-time information transmission, and reducing the load rate of the CAN bus.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An information transmission method, characterized in that the method comprises:
when the vehicle-mounted entertainment system detects that a functional program is started, the vehicle-mounted entertainment system acquires text information generated when the functional program runs in real time and sends an information transmission request to the combination instrument;
the combination meter generates a corresponding information transmission response according to the information transmission request and feeds the information transmission response back to the vehicle-mounted entertainment system;
and the vehicle-mounted entertainment system receives the information transmission response and transmits the text information corresponding to the functional program to the combination meter.
2. The information transmission method according to claim 1, wherein the functional programs include an audio program, a telephone program, a phonebook program, and a navigation program.
3. The information transmission method according to claim 1, wherein the step of, when the in-vehicle entertainment system detects that the function program is started, acquiring, by the in-vehicle entertainment system, text information generated when the function program is running in real time, and sending an information transmission request to the combination meter comprises:
and judging whether the functional program contains character information, and when the functional program does not contain the character information, stopping sending the information transmission request by the vehicle-mounted entertainment system.
4. The information transmission method according to claim 1, wherein the step of the in-vehicle entertainment system receiving the information transmission response and transmitting the text information corresponding to the function program to the combination meter comprises:
and when the vehicle-mounted entertainment system does not receive the information transmission response within the preset time, the vehicle-mounted entertainment system sends the information transmission request to the combination meter at a preset speed period.
5. The information transmission method according to claim 1, wherein the step of the in-vehicle entertainment system receiving the information transmission response and transmitting the text information corresponding to the function program to the combination meter is followed by:
when the vehicle-mounted entertainment system detects that the functional program is in the disabled state, the vehicle-mounted entertainment system stops sending the information transmission request to the combination meter.
6. The information transmission method according to claim 1, wherein the text information includes a plurality of sets of sub information of different types, and the step of the in-vehicle entertainment system receiving the information transmission response and transmitting the text information corresponding to the function program to the combination meter includes:
and the vehicle-mounted entertainment system sequentially sends the sub-information to the combination instrument according to a preset sequence.
7. An information transmission apparatus, characterized in that the apparatus comprises:
the vehicle-mounted entertainment system is used for acquiring text information generated when a functional program runs in real time when the starting of the functional program is detected, sending an information transmission request to a combination instrument, receiving an information transmission response and transmitting the text information corresponding to the functional program to the combination instrument;
and the combination meter is used for generating a corresponding information transmission response according to the information transmission request and feeding back the information transmission response to the vehicle-mounted entertainment system.
8. The information transmission apparatus according to claim 7, wherein the in-vehicle entertainment system includes:
and the judging module is used for judging whether the functional program contains the character information or not, and stopping sending the information transmission request when the functional program does not contain the character information.
9. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1-6.
10. An in-vehicle system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the program, carries out the steps of the method according to any one of claims 1-6.
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