Music information sharing method and music information sharing device

Abstract

To share music information between vehicles in consideration of a driving load and an emotion of a driver.SOLUTION: A music information sharing device 3 calculates an adaptation degree indicating a matching degree of preference between a driver of a self vehicle and a user of the other vehicle, calculates a driving load value which is set in accordance with a magnitude of a driving load on the driver of the self vehicle and calculates an emotion estimation value estimating an emotion of the driver of the self vehicle. On the basis of the adaptation degree, the driving load value and the emotion estimation value, a grouping score for determining whether or not the driver of the self vehicle and the user of the other vehicle can be matched is calculated and in a case where the grouping score is larger than a predetermined threshold, the driver of the self vehicle and the user of the other vehicle are matched. Music information provided from the matched user of the other vehicle is adjusted based on the driving load value and the emotion estimation value, and the adjusted music information is provided to the driver of the self vehicle.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a music information sharing method and a music information sharing device. [Background technology]

[0002] Conventionally, an information sharing system that makes it possible to effectively provide information of interest to users is disclosed in Patent Document 1. In the information sharing system disclosed in Patent Document 1, multiple users with a common destination are identified and matched, and video information and audio information are shared among the matched multiple users. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2022 / 059332 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional information sharing system described above, information is shared between users who are matched by destination, which means that the information cannot be shared taking into account the driver's driving load or emotions.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a music information sharing method and a music information sharing device that can share music information between vehicles while taking into account the driver's driving load and emotions. [Means for solving the problem]

[0006] A music information sharing method and music information sharing device according to one embodiment of the present invention calculates a grouping score based on compatibility, a driving load value, and an emotion estimation value to determine whether a driver of the vehicle can be matched with a user of another vehicle, and if the grouping score is greater than a predetermined threshold, matches the driver of the vehicle with the user of the other vehicle, adjusts music information provided by the matched user of the other vehicle based on the driving load value and the emotion estimation value, and provides the adjusted music information to the driver of the vehicle to share. [Effects of the Invention]

[0007] According to the present invention, music information can be shared between vehicles while taking into consideration the driver's driving load and emotions. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing the configuration of a music information sharing system including a music information sharing device according to an embodiment. [Figure 2] FIG. 2 is a flowchart showing a processing procedure of a music information sharing process performed by the music information sharing device according to an embodiment. [Figure 3] FIG. 3 is a flowchart showing a processing procedure of grouping processing by the music information sharing apparatus according to an embodiment. [Figure 4] FIG. 4 is a flowchart showing a processing procedure of a music information providing process performed by a music information sharing device according to an embodiment. [Figure 5] FIG. 5 is a flowchart showing a processing procedure of a music information adjustment process performed by a music information sharing device according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a music information sharing method and a music information sharing device according to the present embodiment will be described with reference to the drawings. In the description of the drawings, the same parts are given the same reference numerals and the description thereof will be omitted.

[0010] [Configuration of music information sharing system] The configuration of a music information sharing system including a music information sharing device according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a block diagram showing the configuration of the music information sharing system according to this embodiment. As shown in Fig. 1, the music information sharing system 1 includes a music information sharing device 3 and another vehicle 5. The music information sharing device 3 is also connected to a group of ambient environment sensors 11, a group of vehicle behavior sensors 12, a navigation device 13, an in-vehicle camera 14, an in-vehicle sensor 15, and a speaker 16, all of which are mounted on the vehicle.

[0011] The music information sharing system 1 is a system for sharing music information between a music information sharing device 3 installed in a vehicle and another vehicle 5. In the music information sharing system 1, the music information sharing device 3 adjusts the volume, melody, etc. of the music information provided by the other vehicle 5 before providing it to the driver of the vehicle, thereby sharing the music information.

[0012] The music information sharing device 3 is a device that is mounted on the host vehicle and shares music information between the host vehicle and another vehicle 5. Specifically, the music information sharing device 3 calculates a compatibility indicating the degree of matching of preferences between the driver of the host vehicle and the user of the other vehicle 5, calculates a driving load value set according to the magnitude of the driving load of the driver of the host vehicle, and calculates an emotion estimation value that estimates the emotion of the driver of the host vehicle.

[0013] Then, based on the compatibility, the driving load value, and the emotion estimation value, the music information sharing device 3 calculates a grouping score for determining whether music information can be shared between the driver of the host vehicle and the user of the other vehicle 5. If this grouping score is greater than a predetermined threshold, the music information sharing device 3 matches the driver of the host vehicle with the user of the other vehicle 5, and adjusts the music information provided by the matched user of the other vehicle 5 based on the driving load value and the emotion estimation value. The adjusted music information is then provided to the driver of the host vehicle and shared. This allows music information to be shared between vehicles, taking into account the driving load and emotion of the driver of the host vehicle.

[0014] The other vehicle 5 is a vehicle equipped with a music information sharing device 3 like the host vehicle, and provides user information of a user riding in the other vehicle 5 to the music information sharing device 3 of the host vehicle. Furthermore, when the driver of the host vehicle and a user of the other vehicle 5 are matched, the music information sharing device 3 of the other vehicle 5 provides music information to the music information sharing device 3 of the host vehicle. The host vehicle and the other vehicle 5 are connected via a communication network.

[0015] The surrounding environment sensor group 11 includes sensors for detecting environmental information around the vehicle, such as an exterior camera, radar, a laser range finder, sonar, etc. Data detected by these sensors is output to the music information sharing device 3 and recorded in a storage device such as a memory (not shown).

[0016] The vehicle behavior sensor group 12 includes sensors for detecting the behavior and driving state of the vehicle, such as a vehicle speed sensor, a gyro sensor, a steering sensor, an accelerator sensor, a brake sensor, etc. Data detected by these sensors is output to the music information sharing device 3 and recorded in a storage device such as a memory (not shown).

[0017] The navigation device 13 acquires the current position of the vehicle using a GPS (Global Positioning System), and guides the vehicle along a guide route from the current position to the destination. The destination set by the navigation device 13 and the travel data of the vehicle are output to the music information sharing device 3 and recorded in a storage device such as a memory (not shown).

[0018] The in-vehicle camera 14 is an imaging means mounted on the vehicle and captures images of the interior of the vehicle and the passengers in the vehicle. The images captured by the in-vehicle camera 14 are output to the music information sharing device 3 and recorded in a storage device such as a memory (not shown).

[0019] The interior sensor 15 is a sensor that acquires the state of the interior of the vehicle and biological information of the occupants of the vehicle. For example, the interior sensor 15 acquires the temperature and humidity inside the vehicle, and also acquires brain waves, heart rate, respiratory rate, etc. as biological information of the occupants.

[0020] The speaker 16 is provided in a car audio system that outputs sound into the cabin of the vehicle, and outputs the music information output from the music information sharing device 3 into the cabin of the vehicle.

[0021] Next, we will explain the configuration of the music information sharing device 3. As shown in Fig. 1, the music information sharing device 3 includes an information acquisition unit 21, a grouping unit 22, an information sharing unit 23, a communication unit 24, a user information database 25, and a music information database 26.

[0022] The information acquisition unit 21 acquires information necessary for processing to share music information. Specifically, the information acquisition unit 21 acquires environmental information about the surroundings of the vehicle from the surrounding environment sensor group 11. The environmental information includes images captured by an external camera and data about objects around the vehicle detected by radar or the like.

[0023] The information acquisition unit 21 also acquires vehicle behavior such as speed and accelerator opening from the vehicle behavior sensor group 12, and acquires the destination of the vehicle from the navigation device 13. Furthermore, the information acquisition unit 21 acquires images from an in-vehicle camera to identify the user driving the vehicle, and acquires user information of the identified user from a user information database 25. The user information includes the attributes, driving characteristics, driving history, and biological information of the driving user. The information acquisition unit 21 also acquires the user's music preferences from a music information database 26.

[0024] The grouping unit 22 calculates the compatibility, the driving load value, and the emotion estimation value. The compatibility indicates the degree of matching between the preferences of the driver of the vehicle and the user of the other vehicle 5. The compatibility is calculated based on at least one of the attributes, destination, driving history, and music preferences of the driver of the vehicle and the user of the other vehicle 5.

[0025] The driving load value is set according to the magnitude of the driving load of the driver of the vehicle. The driving load value is calculated based on driving time, driving distance, weather during driving, and biological information. The emotion estimation value is an index obtained by estimating the emotion of the driver of the vehicle. The emotion estimation value is calculated based on environmental information around the vehicle and the driving characteristics of the driver of the vehicle.

[0026] The grouping unit 22 calculates a grouping score based on the compatibility, the driving load value, and the emotion estimation value. The grouping score is an index for determining whether or not the driver of the vehicle can be matched with the user of the other vehicle 5. When the grouping score is calculated, the grouping unit 22 matches the driver of the vehicle with the user of the other vehicle 5 if the grouping score is greater than a predetermined threshold. Music information is shared between the matched user of the other vehicle 5 and the driver of the vehicle.

[0027] The information sharing unit 23 calculates a driving load value and an estimated emotion value in the same manner as the grouping unit 22, and adjusts music information provided by the matched user of the other vehicle based on the driving load value and the estimated emotion value. At least one of the volume, melody, and frequency components of the music information is adjusted. The information sharing unit 23 then provides the adjusted music information to the driver of the vehicle to share.

[0028] The communication unit 24 has a function of transmitting and receiving information to and from other vehicles 5 via a communication network. The communication unit 24 acquires song information transmitted from other vehicles 5, user information of users of other vehicles 5, and the like, and records the information in the song information database 26 and the user information database 25, respectively.

[0029] The user information database 25 stores user information of users registered as occupants of the vehicle. It also acquires and stores user information of users of other vehicles 5. The user information records information about the users, such as their attributes, driving characteristics, destinations, and driving history.

[0030] The music information database 26 stores music information, which includes information about music such as the user's music preferences, music registered by the user, music information provided by other vehicles 5, and the history of music provided to passengers of the vehicle.

[0031] The music information sharing device 3 is a computer configured with general-purpose electronic circuits including a microcomputer, a microprocessor, and a CPU, as well as peripheral devices such as memory, and is installed with a computer program for executing music information sharing processing. Each function of the music information sharing device 3 can be implemented by one or more processing circuits. The processing circuit may include, for example, a programmed processing device including an electrical circuit, and may also include devices such as an application-specific integrated circuit (ASIC) or conventional circuit components arranged to perform the functions described in the embodiments.

[0032] [Music information sharing processing] Next, a song information sharing process performed by the song information sharing device 3 according to this embodiment will be described. Fig. 2 is a flowchart showing the processing procedure of the song information sharing process. The song information sharing process shown in Fig. 2 starts when the power of the vehicle is turned on.

[0033] 2, in step S101, the information acquisition unit 21 acquires vehicle information of the host vehicle from the vehicle behavior sensor group 12 and the navigation device 13. Specifically, the information acquisition unit 21 acquires the destination of the host vehicle from the navigation device 13, and acquires vehicle behavior such as speed and accelerator opening from the vehicle behavior sensor group 12.

[0034] In step S103, the information acquisition unit 21 acquires user information of a user riding in the vehicle. Specifically, the information acquisition unit 21 identifies the user driving the vehicle from the image captured by the in-vehicle camera 14, and acquires user information of the identified user from the user information database 25. The user information includes the driving characteristics, driving trajectory, and biological information of the driving user. In addition, the information acquisition unit 21 identifies users other than the driver riding in the vehicle, and acquires user information of those users.

[0035] In step S105, the information acquisition unit 21 acquires environmental information about the surroundings of the vehicle from the surrounding environment sensor group 11. Specifically, the information acquisition unit 21 acquires data on images captured by an external camera and objects around the vehicle detected by radar or the like.

[0036] In step S107, the information sharing unit 23 determines whether or not music information is shared between the vehicle and the other vehicle 5, and if music information is not shared, proceeds to step S109, and if music information is shared, proceeds to step S113.

[0037] In step S109, the grouping unit 22 executes a grouping process for matching the driver of the host vehicle with the user of the other vehicle 5 in order to share music information between the host vehicle and the other vehicle 5. Details of the grouping process will be described later.

[0038] In step S111, the grouping unit 22 determines whether or not the driver of the vehicle and the user of the other vehicle 5 have been matched in the grouping process of step S109, and if they have been matched, the process proceeds to step S113. On the other hand, if they have not been matched, the process proceeds to step S115.

[0039] In step S113, the information sharing unit 23 executes a music information providing process for providing music information to the user of the vehicle. The music information providing process will be described in detail later.

[0040] In step S115, the information sharing unit 23 determines whether the power of the vehicle has been turned off and the driving has ended, and if the driving has not ended, the process returns to step S101, and if the driving has ended, the music information sharing process of this embodiment ends.

[0041] [Grouping process] Next, a grouping process performed by the music information sharing device 3 according to this embodiment will be described. Fig. 3 is a flowchart showing the processing procedure of the grouping process. The grouping process is a process for matching the driver of the vehicle with the user of another vehicle 5 in order to share music information.

[0042] 3, in step S201, the grouping unit 22 calculates the compatibility between the driver of the vehicle and the user of the other vehicle 5. The compatibility is an index that indicates the degree of matching of preferences between the driver of the vehicle and the user of the other vehicle 5, and the higher the compatibility, the more the preferences match.

[0043] The grouping unit 22 acquires the attributes, destination, driving history, and music preferences of the user of the other vehicle 5 via the communication unit 24, and calculates the degree of compatibility by comparing them with the attributes, destination, driving history, and music preferences of the driver of the vehicle. That is, the grouping unit 22 calculates the degree of compatibility based on at least one of the attributes, destination, driving history, and music preferences of the driver of the vehicle and the user of the other vehicle 5.

[0044] In step S203, the grouping unit 22 calculates a driving load value of the driver of the vehicle. The driving load value is set according to the magnitude of the driving load of the driver of the vehicle, and the greater the driving load of the driver, the greater the driving load value. The grouping unit 22 acquires the driver's driving time, mileage, weather during driving, biological information, etc. from the user information database 25 to calculate the driving load value. Note that the driving load value changes over time, so it is preferable to calculate it after calculating the compatibility.

[0045] In step S205, the grouping unit 22 calculates an emotion estimation value that estimates the emotion of the driver of the vehicle. The emotion estimation value is a numerical value obtained by estimating the emotion of the driver of the vehicle, and the more pleasant and aroused the driver feels, the larger the emotion estimation value becomes, and the more unpleasant and unaroused the driver feels, the smaller the emotion estimation value becomes.

[0046] The grouping unit 22 calculates an emotion estimation value based on environmental information about the vehicle's surroundings and the driving characteristics of the driver of the vehicle. Specifically, the grouping unit 22 acquires the driver's driving characteristics from the user information database 25, associates them with environmental information about the vehicle's surroundings using an AI model, and estimates which quadrant of Russell's Circumplex of Emotions model the driver's emotion is in. Then, a numerical value is assigned in advance to each quadrant of Russell's Circumplex of Emotions model, and the numerical value corresponding to the quadrant of the Circumplex of Emotions model in which the driver's emotion is estimated is calculated as the emotion estimation value.

[0047] For example, in the first quadrant of the emotion circumplex model, a value greater than 1 is calculated as the emotion estimation value, and in the second quadrant, a value greater than that of quadrant 1 is calculated. In addition, in the third quadrant, 1 is calculated as the emotion estimation value, and in the fourth quadrant, a value less than 1 is calculated.

[0048] In step S207, the grouping unit 22 calculates the grouping score using equation (1). [Number 1] Grouping score = fitness × (1 - driving load value + emotion estimation value) (1)

[0049] As shown in formula (1), the grouping unit 22 calculates a grouping score based on the compatibility, the driving load value, and the emotion estimation value. The grouping score is an index for determining whether the driver of the host vehicle and the user of the other vehicle 5 can be matched, and the larger the compatibility and the emotion estimation value, the larger the value becomes, and the smaller the driving load value, the larger the value becomes. In other words, the grouping score becomes large when the preferences of the driver of the host vehicle and the user of the other vehicle 5 are similar, the driver of the host vehicle is feeling comfortable, and the driving load is small. Therefore, the grouping score becomes large when it is preferable to match the driver of the host vehicle and the user of the other vehicle 5.

[0050] In step S209, the grouping unit 22 determines whether the grouping score calculated in step S207 is greater than a predetermined threshold, and if it is greater than the threshold, proceeds to step S211. On the other hand, if the grouping score is equal to or less than the threshold, the grouping process according to this embodiment ends.

[0051] In step S211, the grouping unit 22 displays a confirmation screen while providing predetermined music to the driver, and asks the driver whether or not to permit grouping. If the driver does not permit grouping, the process returns to step S201 and executes grouping processing with the user of another vehicle. On the other hand, if the driver permits grouping, the driver of the subject vehicle is matched with the user of the other vehicle 5, and the grouping processing according to this embodiment ends.

[0052] [Music information provision processing] Next, a description will be given of a music information providing process performed by the music information sharing device 3 according to this embodiment. Fig. 4 is a flowchart showing the processing procedure of the music information providing process. Since the driver of the host vehicle and the user of the other vehicle 5 have already been matched, the music information providing process is a process for providing the driver of the host vehicle with music information provided by the matched user of the other vehicle 5.

[0053] 4, in step S301, information sharing unit 23 calculates a driving load value of the driver of the vehicle. As in step S203, information sharing unit 23 acquires the driver's driving time, driving distance, weather during driving, biological information, etc. from user information database 25 to calculate the driving load value.

[0054] In step S303, information sharing unit 23 calculates an emotion estimation value that estimates the emotion of the driver of the host vehicle. Similar to step S205, information sharing unit 23 calculates the emotion estimation value based on environmental information around the host vehicle and the driving characteristics of the driver of the host vehicle.

[0055] In step S305, information sharing unit 23 calculates the information sharing score using equation (2). [Number 2] Information sharing score = - driving stress value + α × emotion estimation value (2) Here, α is a predetermined constant.

[0056] As shown in formula (2), the information sharing unit 23 calculates an information sharing score based on the driving load value and the emotion estimation value. The information sharing score is an index for determining whether or not sharing of music information can continue between the driver of the vehicle and the user of the other vehicle 5, and the larger the emotion estimation value, the larger the information sharing score becomes, and the smaller the driving load value, the larger the information sharing score becomes. In other words, when the driver of the vehicle is feeling comfortable and the driving load is low, the information sharing score becomes large. Therefore, when the driver of the vehicle has time to drive and it is preferable to share music information, the information sharing score becomes large.

[0057] In step S307, the information sharing unit 23 determines whether the information sharing score calculated in step S305 is greater than a predetermined threshold, and if it is greater than the threshold, proceeds to step S309. On the other hand, if the information sharing score is equal to or less than the threshold, the matching between the driver of the vehicle and the user of the other vehicle 5 is canceled, sharing of music information is stopped, and the music information provision process according to this embodiment ends.

[0058] For example, if the results of a driving style checklist (DSQ) indicate that the driver of the vehicle has a driving characteristic of "not being confident in his driving skills," and the AI ​​model determines from environmental information collected by the surrounding environment sensor group 11 that "the vehicle is being overtaken on a narrow road," the AI ​​model determines that the driver's emotion is in the fourth quadrant of Russell's emotional circumplex model, and is estimated to be close to "tension." In this case, the driving load value is high and the emotion estimation value is low, so the information sharing score falls below the threshold and sharing of music information is not desirable. Therefore, matching between the driver of the vehicle and the user of the other vehicle 5 is canceled, and sharing of music information is stopped.

[0059] In step S309, the information sharing unit 23 executes a music information adjustment process to adjust the music information shared between the user of the host vehicle and the user of the other vehicle 5. In the music information adjustment process, the music information provided by the matched user of the other vehicle 5 is adjusted based on the driving load value and the emotion estimation value. The music information adjustment process will be described in detail later.

[0060] In step S311, the information sharing unit 23 outputs the music information adjusted in the music information adjustment process of step S309 from the speaker 16 of the vehicle to the interior of the vehicle, and provides and shares the information with the driver of the vehicle, and then the music information provision process of this embodiment is terminated.

[0061] [Music information adjustment processing] Next, a music information adjustment process performed by the music information sharing device 3 according to this embodiment will be described. Fig. 5 is a flowchart showing the processing procedure of the music information adjustment process. The music information adjustment process is a process for adjusting music information provided by a user of another vehicle 5 in accordance with the emotion and driving load of the driver of the vehicle.

[0062] 5, in step S401, the information sharing unit 23 acquires song identification information transmitted from the matched other vehicle 5. The song identification information is information for identifying a song, and may be a song title, a preset song number, or the like.

[0063] In step S403, the information sharing unit 23 acquires background music based on the song identification information acquired in step S401. The information sharing unit 23 identifies a song based on the song identification information, and acquires background music for the identified song from the song information database 26.

[0064] In step S405, the information sharing unit 23 extracts the singing voice based on the song identification information acquired in step S401. The information sharing unit 23 extracts the singing voice of the song identified by the song identification information from the song information database 26.

[0065] In step S407, the information sharing unit 23 adjusts the melody of the background music acquired in step 403 based on the driving load value and emotion estimation value of the driver of the host vehicle. The information sharing unit 23 adjusts the melody (style) of the background music to match the emotion of the driver of the host vehicle using technology such as Groove2Groove. For example, if the driver of the host vehicle normally listens to soft jazz while driving, and the driver is feeling anxious, the information sharing unit 23 adjusts the background music of the song transmitted from the user of the other vehicle 5 to soft jazz using Groove2Groove.

[0066] In step S409, the information sharing unit 23 synthesizes the singing voice extracted in step S405 with the background music whose melody has been adjusted in step S407, and generates music information to be provided to the driver of the vehicle.

[0067] In step S411, information sharing unit 23 performs basic adjustment of the music information generated in step S409 based on the driving load of the driver of the vehicle and the estimated emotion value. For example, when the driving load value is low and the estimated emotion value is in the first quadrant of Russell's emotion circumstance model, information sharing unit 23 maintains the volume and frequency components without changing them.

[0068] Furthermore, when the driving load value is low and the estimated emotion value is in the second quadrant of Russell's circumplex model, the volume is increased to increase the high-frequency components, and when the driving load value is low and the estimated emotion value is in the third quadrant of Russell's circumplex model, the high-frequency components are reduced without changing the volume. Furthermore, when the driving load value is low and the estimated emotion value is in the fourth quadrant of Russell's circumplex model, the volume is decreased to increase the low-frequency components. In this way, at least one of the volume, melody, and frequency components of the music information is adjusted. Once the basic adjustment of the music information has been performed in this way, the music information adjustment process according to this embodiment is completed.

[0069] [Effects of the embodiment] As described above in detail, the music information sharing device 3 according to this embodiment calculates a grouping score based on the compatibility, the driving load value, and the emotion estimation value, and matches the driver of the host vehicle with the user of another vehicle 5 when the grouping score is greater than a predetermined threshold. The music information sharing device 3 then adjusts the music information provided by the matched user of the other vehicle 5 based on the driving load value and the emotion estimation value, and provides the adjusted music information to the driver of the host vehicle for sharing. This makes it possible to share music information between vehicles while taking into account the driver's driving load and emotion.

[0070] In particular, in this embodiment, music information is shared between vehicles when it is determined that the driver of the vehicle has sufficient driving capacity, taking into consideration the driving load and emotions of the driver of the vehicle, so music information can be shared while avoiding situations where the driving load is heavy or the driver is feeling uncomfortable. Therefore, the sharing of music information does not adversely affect the driver's driving, and the driver can drive the vehicle comfortably.

[0071] Furthermore, in the music information sharing device 3 according to this embodiment, the compatibility is calculated based on at least one of the attributes, destination, driving history, and music preferences of the driver of the vehicle and the user of the other vehicle 5. This makes it possible to identify the user of the other vehicle 5 whose preferences are similar to those of the driver of the vehicle, allowing the driver to drive the vehicle comfortably.

[0072] Furthermore, in the music information sharing device 3 according to this embodiment, the emotion estimation value is calculated based on environmental information about the surroundings of the vehicle and the driving characteristics of the driver of the vehicle. This allows the emotion estimation value to be calculated taking into account environmental information about the surroundings of the vehicle and the driving characteristics of the driver, making it possible to accurately estimate the driver's emotion.

[0073] Furthermore, the music information sharing device 3 according to the present embodiment calculates the driving load value after calculating the degree of conformance, thereby calculating the driving load value, which changes over time, after the degree of conformance, thereby enabling a more accurate driving load value to be calculated.

[0074] Furthermore, the music information sharing device 3 according to this embodiment adjusts at least one of the volume, melody, and frequency components of the music information provided by the user of the other vehicle 5. This allows music information adjusted to suit the driver of the vehicle to be provided to the driver.

[0075] Furthermore, the music information sharing device 3 according to this embodiment calculates an information sharing score based on the driving load value and the emotion estimation value, and when the information sharing score is equal to or less than a predetermined threshold, cancels the matching between the driver of the vehicle and the user of the other vehicle 5 and stops sharing of music information. This makes it possible to stop sharing of music information when sharing of music information is not desirable, thereby preventing the driver from feeling uncomfortable and ensuring safety.

[0076] Although the embodiments of the present invention have been described above, the descriptions and drawings that form part of this disclosure should not be understood to limit the present invention. Various alternative embodiments, examples, and operating techniques will become apparent to those skilled in the art from this disclosure. [Explanation of symbols]

[0077] 1. Music information sharing system 3. Music information sharing device 5 Other vehicles 11 Surrounding environment sensors 12 Vehicle behavior sensors 13 Navigation devices 14 In-car camera 15 In-vehicle sensors 16 speakers 21 Information Acquisition Department 22 Grouping Section 23 Information sharing department 24 Communications Department 25 User Information Database 26 Music Information Database

Claims

1. A music information sharing method for sharing music information between a vehicle and another vehicle, comprising: calculating a compatibility level indicating a degree of matching between preferences of the driver of the vehicle and the user of the other vehicle; calculating a driving load value set in accordance with the magnitude of the driving load of the driver of the vehicle; calculating an emotion estimation value that estimates the emotion of the driver of the vehicle; calculating a grouping score for determining whether or not the driver of the subject vehicle and the user of the other vehicle can be matched based on the compatibility, the driving load value, and the emotion estimation value; If the grouping score is greater than a predetermined threshold, matching the driver of the vehicle with the user of the other vehicle; adjusting music information provided by the matched user of the other vehicle based on the driving load value and the emotion estimation value; The adjusted music information is provided to and shared with the driver of the vehicle. How to share song information.

2. The compatibility is calculated based on at least one of the attributes, destination, driving history, and music preferences of the driver of the vehicle and the user of the other vehicle. The music information sharing method according to claim 1 .

3. The emotion estimation value is calculated based on environmental information about the surroundings of the host vehicle and driving characteristics of the driver of the host vehicle. The music information sharing method according to claim 1 .

4. After calculating the fitness, the operating load value is calculated. The music information sharing method according to claim 1 .

5. The music information provided by the user of the other vehicle is adjusted in at least one of volume, melody, and frequency components. The music information sharing method according to claim 1 .

6. calculating an information sharing score for determining whether or not the sharing of the music information between the driver of the vehicle and the user of the other vehicle can continue based on the driving load value and the emotion estimation value; When the information sharing score is equal to or less than a predetermined threshold, the matching between the driver of the vehicle and the user of the other vehicle is cancelled, and the sharing of the music information is stopped. The music information sharing method according to claim 1 .

7. A music information sharing device for sharing music information between a vehicle and another vehicle, calculating a compatibility level indicating a degree of matching between preferences of the driver of the vehicle and the user of the other vehicle; calculating a driving load value set in accordance with the magnitude of the driving load of the driver of the vehicle; calculating an emotion estimation value that estimates the emotion of the driver of the vehicle; calculating a grouping score for determining whether or not the driver of the subject vehicle and the user of the other vehicle can be matched based on the compatibility, the driving load value, and the emotion estimation value; If the grouping score is greater than a predetermined threshold, matching the driver of the vehicle with the user of the other vehicle; adjusting music information provided by the matched user of the other vehicle based on the driving load value and the emotion estimation value; The adjusted music information is provided to and shared with the driver of the vehicle. Music information sharing device.

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