JP2014089553A - In-vehicle device, danger prediction method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it used to be impossible to perform danger prediction in accordance with a musical piece to which a user is listening in a conventional in-vehicle device.SOLUTION: An in-vehicle device includes: a danger determination condition storage part for storing one or more danger determination conditions for determining that a user is in danger; a musical piece data storage part for storing one or more musical piece data; an acceptance part for accepting a musical piece reproduction instruction having a musical piece data identifier for identifying the musical piece data; a musical piece reproduction part for acquiring and reproducing musical piece data to be identified by the musical data identifier owned by the musical piece reproduction instruction; a musical piece relevant information acquisition part for acquiring musical piece relevant information as information related to the musical piece data; a danger determination part for determining whether or not the musical piece relevant information acquired by the musical piece relevant information acquisition part is coincident with any of one or more danger determination conditions; and a danger notification part for, when it is determined that the musical piece relevant information is coincident with any of one or more danger determination conditions by the danger determination part, outputting a result indicating that the user is in danger. Thus, it is possible to perform danger prediction in accordance with the musical piece to which the user is listening.

Description

  The present invention relates to an in-vehicle device and the like.

  2. Description of the Related Art Conventionally, a device that predicts the danger of a collision from the behavior of another vehicle and avoids the collision has been developed (see Patent Document 1).

JP2011-242887

  Driving while listening to music usually reduces the attention and increases the possibility of a dangerous situation. However, in a conventional in-vehicle device, it has not been possible to perform risk prediction according to the music that the user is viewing.

  The in-vehicle device of the first aspect of the invention includes a risk determination condition storage unit that stores one or more risk determination conditions for determining that it is dangerous, a music data storage unit that stores one or more music data, A reception unit that receives a music playback instruction having a music data identifier that identifies music data, a music playback unit that acquires and plays back music data identified by a music data identifier that the music playback instruction received by the reception unit, and a music The music related information acquisition unit that acquires the music related information that is information related to the music data being played back by the playback unit, and the music related information acquired by the music related information acquisition unit match any one or more of the risk determination conditions. A risk determination unit that determines whether or not to perform a risk determination unit that outputs a danger message when the risk determination unit determines that one of the one or more risk determination conditions is met. A transfer device.

  With such a configuration, it is possible to perform risk prediction according to the music that the user is viewing.

  In addition, the vehicle-mounted device according to the second aspect of the present invention relates to the first aspect of the invention, wherein the risk determination condition relates to a condition related to music related information that is information related to music data, and to voice related information that is information related to a voice uttered by a user A voice-related information acquisition unit that acquires voice-related information, and the risk determination unit includes the music-related information acquired by the music-related information acquisition unit and the voice acquired by the voice-related information acquisition unit. The related information is an in-vehicle device that determines whether or not one of the one or more risk determination conditions is met.

  With such a configuration, it is possible to perform risk prediction according to the music that the user is viewing and the voice that the user is uttering.

  Further, in the in-vehicle device according to the third aspect of the present invention, the risk judgment condition is a condition that also has a condition related to speed related information that is information related to the speed of the moving object, and the speed related information. A speed-related information acquisition unit that acquires information is further provided, and the risk determination unit determines whether the speed-related information acquired by the speed-related information acquisition unit also matches any one or more risk determination conditions. It is an in-vehicle device.

  With such a configuration, it is possible to perform risk prediction according to the speed of the moving object.

  In the on-vehicle apparatus according to the fourth aspect of the present invention, the risk determination condition also includes a condition related to distance-related information, which is information related to a distance from another moving body, in any one of the first to third aspects. A distance-related information acquisition unit that acquires distance-related information, and the risk determination unit also matches the distance-related information acquired by the distance-related information acquisition unit with one or more of the risk determination conditions. It is an in-vehicle device that determines whether or not.

  With such a configuration, it is possible to perform risk prediction according to the distance from other moving objects.

  In addition, the vehicle-mounted device according to the fifth aspect of the invention relates to the fourth aspect of the invention, wherein the distance related information acquisition unit acquires a front image that is a front image of the moving body, and a front image acquisition unit. Is a vehicle-mounted device that includes a distance-related information acquisition unit that detects a moving body from the acquired front image and acquires distance-related information indicating a distance from another moving body that is a moving body in the front image.

  With such a configuration, the distance from another moving body can be calculated using a front image.

  In addition, the on-vehicle device according to the sixth aspect of the present invention is the on-vehicle device that performs output according to the risk judgment condition that the risk judgment unit determines that the risk judgment unit matches with any one of the first to fifth inventions. It is.

  With such a configuration, it is possible to change the output method, contents, and the like according to the determination result indicating the danger.

  In addition, the on-vehicle device according to the seventh aspect of the present invention is an on-vehicle device in which the danger notification unit outputs a screen indicating that there is a danger to any one of the first to sixth inventions.

  With such a configuration, it is possible to output a screen indicating a danger.

  According to the vehicle-mounted device or the like according to the present invention, it is possible to perform risk prediction according to the music that the user is viewing.

Block diagram of in-vehicle device 1 in the first embodiment A flowchart for explaining the overall operation of the in-vehicle device 1 A flowchart for explaining whether or not the risk judgment condition is met. Figure showing an example of the same risk judgment condition The figure which shows the example of the music data Figure showing an example of the same screen output Figure showing an example of the same screen output The figure which shows the example of the front image The figure which shows the example of the contour extraction from the front image Figure showing an example of the same risk judgment condition Overview of the computer system in the above embodiment Block diagram of a computer system in the above embodiment

  Hereinafter, embodiments of an in-vehicle device and the like according to the present invention will be described with reference to the drawings. In addition, since the component which attached | subjected the same code | symbol in embodiment performs the same operation | movement, description may be abbreviate | omitted again. In addition, the format, content, and the like of each information described in this embodiment are merely examples, and the format, content, and the like are not limited as long as the meaning of each information can be indicated.

(Embodiment 1)
In the present embodiment, a description will be given of an in-vehicle device 1 that performs risk prediction according to information on a music being listened to, sound produced by a user, speed of a moving body, and the like.

  The in-vehicle device 1 according to the present embodiment is, for example, a car navigation system, a display / audio, or the like, and is usually mounted on a moving body. The moving body is, for example, an automobile, a motorcycle, a bicycle, or the like. The moving body may include a person.

  FIG. 1 is a block diagram of an in-vehicle device 1 in the present embodiment. The in-vehicle device 1 includes a risk determination condition storage unit 101, a music data storage unit 102, a reception unit 103, a music playback unit 104, a music related information acquisition unit 105, a voice related information acquisition unit 106, a speed related information acquisition unit 107, and a distance related The information acquisition part 108, the danger judgment part 109, and the danger alerting | reporting part 110 are provided. The distance related information acquisition unit 108 includes a forward image acquisition unit 1081 and a distance related information acquisition unit 1082.

  The risk determination condition storage unit 101 stores one or more risk determination conditions for determining a risk. The risk determination conditions include, for example, a music related condition that is a condition related to music, a voice related condition that is a condition related to a voice uttered by a user, a speed related condition that is a condition related to the speed of a moving object, and the in-vehicle device 1. A distance-related condition, which is a condition related to the distance between the moving body (hereinafter referred to as own vehicle) and another mobile body (hereinafter referred to as other vehicle as appropriate).

  The music-related condition is a condition related to music-related information, which is information related to music data that is usually a computerized music. The music data will be described later. The music related information includes, for example, characteristic information indicating the characteristics of music, reproduction related information that is information related to music playback, attribute information indicating attributes of music data, and the like. The feature information is information that indicates the feature of the music that is usually obtained by analyzing the music data. The feature information is information indicating, for example, a tempo (Beat Per Minute: BPM), volume, tone, and range. The reproduction related information is usually information indicating user settings at the time of reproduction of music data. The reproduction related information is, for example, information indicating a reproduction volume (reproduction volume), a reproduction speed (reproduction speed), and the like. Further, the attribute information is information indicating an attribute of the music data. The attribute information is, for example, information indicating a bit rate, size (capacity), length, number of channels, artist name, song name, album name, genre, and the like.

  From the above, the music-related conditions are, for example, “the tempo of the music is 80 BPM or more”, “the length is less than 3 minutes”, “the volume during playback is 20 or more”, “reproduction” The speed is +2 or more, the bit rate is 128 kbps or more, the genre is a lock system, and the like.

  In addition, the voice related condition is a condition related to voice related information which is information related to a voice uttered by a user. The sound-related information is information indicating, for example, the loudness of the voice uttered by the user, the determination result of whether the sound is relatively loud or small, the determination result of whether the user is singing, or the like. The unit of loudness is usually dB (decibel), but may be Pa (pascal) or phon (phone), for example. “Relatively large” means that it is greater than or equal to a predetermined threshold value and greater than a predetermined threshold value. Further, “relatively small” means that it is less than or equal to a predetermined threshold value and smaller than a predetermined threshold value.

  From the above, the voice-related conditions are, for example, “the volume of the voice is 65 dB or more”, “the voice is loud”, “the user is singing”, and the like.

  The speed-related condition is a condition related to speed-related information that is information related to the speed of the moving object. The speed-related information is, for example, the speed of the moving object, the acceleration of the moving object, the angular velocity of the moving object, the angular acceleration of the moving object, the determination result of whether the moving object is faster or slower, This is information indicating the degree of speed increase.

  From the above, the speed-related conditions are, for example, “the speed is 60 km / h or more”, “the acceleration is 2 m / s · s or more”, “the speed is increasing”, “the speed is It ’s going up slowly. ”

  The distance-related condition is a condition related to distance-related information that is information related to the distance between the host vehicle and other vehicles. The distance-related information includes, for example, the distance between the own vehicle and other vehicles (front and rear, left and right), whether the distance between the own vehicle and other vehicles is shortened or extended (approaching other moving objects or other movements) Information indicating a determination result of whether the user is moving away from the body.

  From the above, distance-related conditions are, for example, “the front inter-vehicle distance is 4 m or less”, “the rear inter-vehicle distance is 3 m or less”, “being close to the front moving body”, “ Other moving objects are approaching from the left. "

  Further, the risk determination condition may be, for example, a combination of the above two or more conditions. The combination is usually a logical product (AND), but may be a logical sum (OR). Moreover, it is preferable that the risk determination condition usually has at least a music related condition. In other words, it is preferable that the risk determination condition is a combination of one or more of three conditions of a voice-related condition, a speed-related condition, and a distance-related condition, and a music-related condition.

  Moreover, the notification content information which shows the content which the below-mentioned danger notification part 110 outputs may respond | correspond to the danger judgment conditions. The notification content information is, for example, “screen output” indicating that a danger message is output on the screen, “warning sound” indicating that a warning message is output using a warning sound, and characters to be output to the screen. “Danger!”, “Alert.mp3” for identifying a warning sound, and the like.

  The music data storage unit 102 stores one or more music data. The music is usually what is called “music” or what is called “music”. The content of the music does not matter. The music data may be in any format as long as the music data can be handled electronically. The music data is in a format such as MP3, MIDI, or WAV. The music data usually has a music data identifier for identifying the music data. The music data identifier is, for example, a so-called file name or music name. The music data usually has one or more types of attribute information. Since the attribute information has been described above, the description thereof will be omitted.

  The accepting unit 103 accepts a music reproduction instruction that is an instruction to reproduce music data. The music reproduction instruction usually has a music data identifier for identifying music data. In addition, reception means reception of information input from an input device such as a touch panel or a keyboard, reception of information transmitted via a wired or wireless communication line, and recording media such as an optical disk, a magnetic disk, and a semiconductor memory. It is a concept that includes acceptance of read information.

  In addition to the music playback instruction, the receiving unit 103, for example, a music stop instruction for stopping the playback of music data, a playback volume adjustment instruction for adjusting the playback volume, a playback speed adjustment instruction for adjusting the playback speed, and a power ON An instruction, a power-off instruction, or the like may be received. The playback volume adjustment instruction usually has playback volume information indicating the playback volume. The playback speed adjustment instruction usually has playback speed information indicating the playback speed. Moreover, when the reception part 103 receives these instructions, the vehicle-mounted apparatus 1 normally performs a predetermined process according to the received instructions.

  In addition, the input unit such as information and instructions in the reception unit 103 may be anything such as a menu screen or a keyboard. The accepting unit 103 can be realized by control software for a menu screen, a device driver for input means such as a keyboard, and the like.

  The music playback unit 104 acquires the music data identified by the music data identifier included in the music playback instruction received by the receiving unit 103 from the music data storage unit 102. Then, the music playback unit 104 plays back the acquired music data. The reproduction of the music data may be synonymous with the output of the music data. Output is usually output to a speaker. For example, when the reception unit 103 receives a music stop instruction, the music playback unit 104 stops playback of the music data being played back. For example, when the reception unit 103 receives a reproduction volume adjustment instruction, the music reproduction unit 104 adjusts the reproduction volume according to the reproduction volume information included in the reproduction volume adjustment instruction. For example, when the reception unit 103 receives a playback speed adjustment instruction, the music playback unit 104 adjusts the playback speed according to the playback speed information included in the playback speed adjustment instruction.

  The music related information acquisition unit 105 acquires music related information. The music related information acquisition unit 105 normally acquires music related information from the music data being reproduced by the music reproduction unit 104. The music related information acquisition unit 105 may acquire music related information from the music playback unit 104.

  For example, when acquiring feature information, the music related information acquisition unit 105 normally analyzes the music data being played back by the music playback unit 104 and acquires the feature information that is the analysis result. Since methods and procedures for analyzing music data and acquiring feature information are well known, detailed description thereof will be omitted. Note that software that analyzes music data and obtains tempo includes, for example, BPM Analyzer (http://mixmeister.com/bpmanalyzer/bpmanalyzer.asp). Software that analyzes music data and obtains the maximum volume, the average volume, and the like includes, for example, SoundEngine Free (http://soundengine.jp/software/soundengine/).

  Further, for example, feature information may be associated with each piece of music data. In this case, the feature information may be stored in the music data storage unit 102, or may be stored in an arbitrary storage area or a predetermined storage area. Further, in this case, the music related information acquisition unit 105 usually obtains characteristic information corresponding to the music data being reproduced by the music reproduction unit 104 from the music data storage unit 102, an arbitrary storage area, or a predetermined storage area. get.

  In addition, for example, when acquiring reproduction-related information, the music-related information acquisition unit 105 normally performs reproduction volume information used by the music reproduction unit 104 when adjusting the reproduction volume, adjusting the reproduction speed, Playback speed information and the like are acquired from the music playback unit 104.

  For example, when acquiring attribute information, the music related information acquisition unit 105 normally acquires one or more types of attribute information included in the music data from the music data reproduced by the music reproduction unit. Since the method and procedure for acquiring one or more types of attribute information from the music data are well known, detailed description thereof will be omitted.

  The voice related information acquisition unit 106 acquires voice related information related to the voice uttered by the user. The sound related information acquisition unit 106 normally acquires sound related information periodically. In addition, the voice related information acquisition unit 106 may acquire the voice related information according to an instruction from the user, for example. In addition, the audio related information acquisition unit 106 performs, for example, audio while the music reproducing unit 104 is reproducing music data or while the music reproducing unit 104 is reproducing music data that matches a predetermined condition. Related information may be acquired.

  The voice related information acquisition unit 106 usually first acquires absolute voice information indicating the loudness of the voice uttered by the user. Then, the voice related information acquisition unit 106 determines whether or not the absolute voice information is greater than a predetermined threshold or greater than or equal to the threshold. Then, the voice related information acquisition unit 106 acquires relative voice information indicating a determination result of whether the voice uttered by the user is relatively loud or small. Note that the threshold value is normally held by the voice-related information acquisition unit 106, but may be stored in an arbitrary storage area or a predetermined storage area. Also, the method and procedure for acquiring singing presence / absence information indicating the determination result of whether or not the user is singing are the same as the method and procedure for acquiring relative audio information.

  In addition, when acquiring the audio information, the audio related information acquisition unit 106, for example, the average audio volume for a predetermined time, the maximum audio volume for a predetermined time, or the minimum audio volume for a predetermined time. You may acquire the absolute audio | voice information which shows a magnitude | size etc.

  The audio related information acquisition unit 106 normally acquires absolute audio information from a so-called microphone. In this case, the voice related information acquisition unit 106 may have a microphone or may be realized by a microphone. The processing procedure of the audio related information acquisition unit 106 is usually realized by software, and the software is recorded in a recording medium such as a ROM.

  In addition, the sound collected by the microphone may include so-called noise such as a music being reproduced, engine sound, and ambient sound. Therefore, for example, the voice related information acquisition unit 106 may perform processing such as noise removal on the voice collected by the microphone and collect only the voice uttered by the user.

  The speed related information acquisition unit 107 acquires speed related information regarding the speed of the moving object. The speed related information acquisition unit 107 normally acquires speed related information periodically. Further, the speed related information acquisition unit 107 may acquire speed related information according to an instruction from the user, for example. In addition, the speed related information acquisition unit 107 performs, for example, a speed while the music reproducing unit 104 is reproducing music data or while the music reproducing unit 104 is reproducing music data that matches a predetermined condition. Related information may be acquired.

  The speed-related information acquisition unit 107 usually includes speed information indicating the speed of the moving object, acceleration information indicating the acceleration of the moving object, angular velocity information indicating the angular speed of the moving object, angular acceleration information indicating the angular acceleration of the moving object, and the like. get. Then, the speed related information acquisition unit 107 determines from the acceleration information, and acquires speed change information indicating a determination result of whether the speed of the moving body is high or low. That is, for example, when the acceleration information is greater than 0, the speed related information acquisition unit 107 determines that the speed is high, and acquires speed change information indicating that the speed is high. For example, when the acceleration information is smaller than 0, the speed related information acquisition unit 107 determines that the speed is slow and acquires speed change information indicating that the speed is slow. For example, when the acceleration information is 0, the speed related information acquisition unit 107 determines that there is no change in speed, and acquires speed change information indicating that there is no change in speed.

  Further, the speed related information acquisition unit 107 usually acquires speed related information from a so-called speed sensor, an acceleration sensor, a gyro, or a device that displays information acquired from these devices. In this case, the speed related information acquisition unit 107 may include these devices, or may be realized by these devices. The processing procedure of the speed related information acquisition unit 107 is usually realized by software, and the software is recorded in a recording medium such as a ROM.

  The distance related information acquisition unit 108 acquires distance related information that is information related to a distance (an inter-vehicle distance) with another moving body. The distance related information acquisition unit 108 normally acquires distance related information periodically. Further, the distance related information acquisition unit 108 may acquire speed related information in accordance with an instruction from the user, for example. In addition, the distance related information acquisition unit 108 is configured to display the distance while the music playback unit 104 is playing back music data or while the music playback unit 104 is playing back music data that matches a predetermined condition. Related information may be acquired. Moreover, the distance related information acquisition part 108 acquires distance related information normally by each means mentioned later.

  The front image acquisition unit 1081 acquires a front image that is an image ahead of the moving object. The front image may be a video having the two or more images. Further, the front image acquisition means 1081 usually acquires a front image from an image sensor (solid-state imaging device) such as a CMOS or CCD, or a camera (digital still camera, digital video camera) using the image sensor. In this case, the front image acquisition unit 1081 may include these devices, or may be realized by these devices. The processing procedure of the front image acquisition unit 1081 is usually realized by software, and the software is recorded in a recording medium such as a ROM.

  The distance related information acquisition unit 1082 acquires distance related information, which is information related to the distance (inter-vehicle distance) with other moving objects. The distance related information acquisition unit 1082 normally acquires the distance related information without using or using the front image acquired by the front image acquisition unit 1081. Further, the distance related information acquisition unit 1082 normally acquires distance information indicating the distance between the own vehicle and another vehicle. In addition, the distance related information acquisition unit 1082 normally uses the two or more distance information acquired for one other vehicle to determine whether the host vehicle is approaching the other vehicle or the host vehicle is moving away from the other vehicle. Is obtained.

  When the front image is not used, the distance related information acquisition unit 1082 acquires distance information using, for example, own vehicle position information indicating the position of the own vehicle and other vehicle position information indicating the position of the other vehicle. The “acquisition” is usually “calculation”. The own vehicle position information and the other vehicle position information are usually longitude and latitude, but may be coordinates on a map or altitude.

  Further, the distance related information acquisition unit 1082 normally acquires other vehicle position information by so-called inter-vehicle communication. The “acquisition” is usually “reception”. The distance related information acquisition unit 1082 normally acquires one or more other vehicle position information. Therefore, the distance related information acquisition unit 1082 acquires one or more distance information using the own vehicle position information and one or more other vehicle position information. Since the method and procedure for calculating distance information indicating the distance between the two positions using the two pieces of position information of the own vehicle position information and the other vehicle position information are well known, detailed description will be given. Is omitted.

  Moreover, when using a front image, the distance relevant-information acquisition means 1082 detects the other vehicle from the said front image, for example, and acquires the distance information which shows the distance with the said other vehicle. For example, the distance related information acquisition unit 1082 detects an area in which another vehicle is shown from the front image. The region is detected by, for example, contour extraction (edge detection), pattern recognition of the extracted contour, or the like. Since contour extraction, pattern recognition, and the like are known techniques, detailed description thereof is omitted. In addition, the detection method of the area | region where the other vehicle is reflected will not ask | require the method, if the said area | region can be detected. Then, the distance related information acquisition unit 1082 calculates distance information indicating the distance to the other vehicle from the ratio of the size of the detected area to the size of the front image, the size of the detected area, and the like. In this case, the distance related information acquisition unit 1082 holds, for example, an expression for calculating distance information from the ratio, the size of the detected area, and the like, and the ratio calculated in the expression and the size of the detected area are calculated. By substituting the distance, distance information is calculated.

  Further, when acquiring the distance change information, the distance related information acquisition unit 1082 normally has two or more pieces of distance information acquired for one other vehicle (temporal distance information and temporal distance information). Compare If the distance information after the time is smaller than the distance information ahead, the distance related information acquisition unit 1082 determines that the vehicle is approaching another vehicle, and indicates that the vehicle is approaching another vehicle. Get distance change information. In addition, for example, when the distance information after the time is larger than the distance information before the time, the distance related information acquisition unit 1082 determines that it is moving away from the other vehicle and is moving away from the other vehicle. Is obtained. Further, for example, when the distance information after the time is the same as the distance information before the time, the distance related information acquisition unit 1082 determines that there is no change in the distance to the other vehicle, and Distance change information indicating that there is no change in distance is acquired.

  Further, the distance related information acquisition means 1082 usually acquires the own vehicle position information from a satellite navigation system (such as a GPS receiver) or a device that receives position information from a base station for mobile communication. In this case, the distance related information acquisition unit 1082 may have these devices or may be realized by these devices. In addition, the distance related information acquisition unit 1082 is usually realized by a wireless or wired communication unit in order to acquire the other vehicle position information, but may be realized by a unit that receives a broadcast. Further, the distance related information acquisition unit 1082 may acquire distance information from, for example, a laser distance measuring device or a device that measures a distance such as an infrared distance sensor. In this case, the distance related information acquisition unit 1082 may have these devices or may be realized by these devices. The processing procedure of the distance related information acquisition unit 1082 is usually realized by software, and the software is recorded in a recording medium such as a ROM.

  Note that the music-related information acquisition unit 105, the audio-related information acquisition unit 106, the speed-related information acquisition unit 107, and the distance-related information acquisition unit 108 each have a risk determination condition stored in the risk determination condition storage unit 101, for example. Depending on the content, predetermined information may be acquired.

  For example, when the risk determination condition includes a condition related to tempo information, the music related information acquisition unit 105 acquires tempo information. For example, when the risk determination condition includes a condition related to music volume information indicating the volume of music, the music related information acquisition unit 105 acquires music volume information.

  Further, for example, when the risk determination condition has a condition regarding absolute voice information, the voice related information acquisition unit 106 acquires absolute voice information. Further, for example, when the risk determination condition includes a condition regarding relative audio information, the audio related information acquisition unit 106 acquires the relative audio information.

  For example, when the risk determination condition includes a condition regarding speed information, the speed related information acquisition unit 107 acquires speed information. Further, for example, when the risk determination condition includes a condition regarding speed change information, the speed related information acquisition unit 107 acquires speed information.

  For example, when the risk determination condition includes a condition related to distance information, the distance related information acquisition unit 108 acquires distance information. For example, when the risk determination condition includes a condition regarding distance change information, the distance related information acquisition unit 108 acquires distance change information.

  The risk determination unit 109 determines whether or not the music related information acquired by the music related information acquisition unit 105 or the like matches one of one or more risk determination conditions stored in the risk determination condition storage unit 101. . Further, the risk determination unit 109 may determine whether the music related information or the like does not match any of the one or more risk determination conditions, for example.

  For example, when the music-related information acquisition unit 105 acquires music-related information, the risk determination unit 109 determines whether the music-related information matches any one or more risk determination conditions. Further, for example, when the speed related information acquisition unit 107 acquires speed related information, the risk determination unit 109 determines whether the music related information and the speed related information match any one of one or more risk determination conditions. Judge whether or not. For example, when the distance related information acquisition unit 108 acquires distance related information, the risk determination unit 109 determines whether the music related information and the distance related information match one of one or more risk determination conditions. Judge whether or not. For example, when the speed related information acquisition unit 107 acquires speed related information and the distance related information acquisition unit 108 acquires distance related information, the risk determination unit 109 includes the music related information, the speed related information, Then, it is determined whether or not the distance-related information matches any one or more risk determination conditions.

  For example, it is assumed that the music related information is “132 BPM” indicating the tempo. Further, it is assumed that the risk determination condition is “tempo ≧ 128 BPM”. In this case, the risk determination unit 109 determines that the music related information matches the risk determination condition.

  Further, for example, it is assumed that the music related information is “132 BPM” indicating the tempo, and the speed related information is “rising” indicating the change in the speed. Further, it is assumed that the risk judgment condition is “(tempo ≧ 128 BMP) & (speed = increase)”. In this case, the risk determination unit 109 determines that the music related information and the speed related information match the risk determination condition.

  Further, for example, it is assumed that the music related information is “132 BPM” indicating the tempo, and the distance related information is “25 m” indicating the distance to the other vehicle in front. Further, it is assumed that the risk judgment condition is “(tempo ≧ 128 BMP) & (distance ≦ 30 m)”. In this case, the risk determination unit 109 determines that the music related information and the distance related information match the risk determination condition.

  Further, for example, the music related information is “132 BPM” indicating the tempo, the speed related information is “rising” indicating the change in speed, and the distance related information is “25 m” indicating the distance to the other vehicle in front. ”And“ Now approaching ”indicating a change in distance. Further, it is assumed that the risk judgment condition is “(tempo ≧ 128 BMP) & (speed change = increase) & (distance ≦ 30 m) & (distance change = approaching)”. In this case, the risk determination unit 109 determines that the music related information, speed related information, and distance related information match the risk determination condition.

  Further, for example, when the notification content information is associated with the risk determination condition, the risk determination unit 109 normally determines the notification content information associated with the risk determination condition determined to match the music related information or the like as the risk determination. Obtained from the condition storage unit 101.

  The danger notifying unit 110 indicates that it is dangerous when the danger determining unit 109 determines that the music related information acquired by the music related information acquiring unit 105 or the like matches one or more of the risk determination conditions. Output. In addition, for example, when the danger determination unit 109 determines that the music related information acquired by the music related information acquisition unit 105 or the like does not match any one or more of the risk determination conditions, You may output that it is dangerous.

  The “outputting the danger” usually means outputting information indicating the danger. The output includes display on a display, sound output, projection using a projector, printing with a printer, transmission to an external device, accumulation in a recording medium, processing result to another processing device or other program, etc. It is a concept that includes the delivery of In addition, regarding transmission, accumulation, and delivery of processing results, an output target is finally presented to the user. Further, as a result of transmission, storage, and delivery of processing results, for example, a device such as a so-called drive recorder may be started, or video recording by a so-called video camera or digital camera may be started. Further, as a result of the output, the user is usually notified that it is dangerous.

  “Dangerous” means, for example, listening to the music being played, singing, increasing speed, or approaching a moving body ahead Widely understood, including paying attention to the distance between the vehicle and the moving body ahead, having reduced concentration, and requiring attention to driving.

  In addition, the output method and means are usually determined in advance, but this need not be the case. Otherwise, the danger notification unit 110 may output a danger message according to the notification content information acquired by the danger determination unit 109, for example. For example, if the notification content information is “screen output”, the danger notification unit 110 outputs, for example, characters and images on the screen. For example, if the notification content information is “warning sound”, the danger notification unit 110 outputs, for example, a predetermined warning sound or a warning sound included in the notification content information.

  Also, the danger notification unit 110 normally outputs a screen indicating that it is dangerous. In the case of outputting the screen, for example, when the map is output on the screen or when the front image is output, the danger notification unit 110 normally outputs the output content that has already been output. Overlay and output text and images.

  Further, the risk notification unit 110 normally determines that the risk determination unit 109 determines that any of the one or more risk determination conditions is met and then determines that the risk determination unit 109 does not match any of the one or more risk determination conditions. During that time, it keeps outputting that it is dangerous. In addition, the danger notification unit 110 outputs, for example, a danger message for a predetermined time after the danger judgment unit 109 determines that one of the one or more risk judgment conditions is met, and then outputs the output. You may end.

  Note that the danger determination condition storage unit 101 and the music data storage unit 102 are preferably non-volatile recording media, but can also be realized by volatile recording media. Further, the process in which the predetermined information is stored in the risk judgment condition storage unit 101 or the like is not limited. For example, the predetermined information may be stored in the risk determination condition storage unit 101 or the like via a recording medium, a communication line, an input device, or the like.

  The music playback unit 104 and the danger notification unit 110 may or may not include an output device such as a display or a speaker. The music playback unit 104 and the like can be realized by driver software for an output device, driver software for an output device and an output device, or the like.

  In addition, the music related information acquisition unit 105 and the risk determination unit 109 can be usually realized by an MPU, a memory, or the like. The processing procedure of the music related information acquisition unit 105 is usually realized by software, and the software is recorded in a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).

  Next, the overall operation of the in-vehicle device 1 will be described using a flowchart. Note that the i-th information in the predetermined information is described as “information [i]”. FIG. 2 is a flowchart showing the overall operation of the in-vehicle device 1.

  (Step S201) The in-vehicle device 1 determines whether or not the receiving unit 103 has received a power-on instruction. If accepted, the process proceeds to step S202; otherwise, the process returns to step S201.

  (Step S202) The in-vehicle device 1 performs a power ON process.

  (Step S203) The in-vehicle device 1 determines whether or not the receiving unit 103 has received a power-off instruction. If accepted, the process proceeds to step S204; otherwise, the process proceeds to step S205.

  (Step S204) The in-vehicle device 1 performs a power-off process. Then, the process returns to step S201.

  (Step S205) The music playback unit 104 determines whether the reception unit 103 has received a music playback instruction. If accepted, the process proceeds to step S206; otherwise, the process proceeds to step S211.

  (Step S206) The music playback unit 104 acquires the music data identified by the music data identifier included in the music playback instruction received in step S205 from the music data storage unit 102.

  (Step S207) The music playback unit 104 plays back the music data acquired in step S206.

  (Step S208) The music related information acquisition unit 105 acquires music related information from the music data acquired in step S206.

  (Step S209) The music playback unit 104 determines whether or not the reception unit 103 has received a music stop instruction. If accepted, the process proceeds to step S210; otherwise, the process proceeds to step S211.

  (Step S210) The music playback unit 104 stops the playback of the music data.

  (Step S211) The audio related information acquisition unit 106 determines whether it is the acquisition timing of the audio related information. For example, when it is determined in advance that voice-related information is periodically acquired, the voice-related information acquisition unit 106 determines whether or not a predetermined time has elapsed since the voice-related information was previously acquired. If it is the acquisition timing, the process proceeds to step S212. If not, the process proceeds to step S213.

  (Step S212) The voice related information acquisition unit 106 acquires voice related information.

  (Step S213) The speed related information acquisition unit 107 determines whether it is the timing for acquiring the speed related information. For example, when it is predetermined that the speed related information is periodically acquired, the speed related information acquisition unit 107 determines whether or not a predetermined time has elapsed since the speed related information was previously acquired. If it is the acquisition timing, the process proceeds to step S214. If not, the process proceeds to step S215.

  (Step S214) The speed related information acquisition unit 107 acquires speed related information.

  (Step S215) The distance related information acquisition unit 108 determines whether it is the timing for acquiring the distance related information. For example, when it is determined in advance that distance-related information is to be periodically acquired, the distance-related information acquisition unit 108 determines whether or not a predetermined time has elapsed since the distance-related information was previously acquired. If it is the acquisition timing, the process proceeds to step S217, and if not, the process proceeds to step S216.

  (Step S216) The distance related information acquisition unit 108 acquires distance related information.

  (Step S217) The risk determination unit 109 uses the music related information acquired in Step S208, the sound related information acquired in Step S212, the speed related information acquired in Step S214, and the distance related information acquired in Step S216 as the risk determination condition. It is determined whether or not any one or more risk determination conditions stored in the storage unit 101 are met. Details of this processing will be described with reference to the flowchart of FIG. Further, as a result of this processing, the risk determination unit 109 substitutes “1” or “0” for a match flag indicating whether or not the music related information or the like matches the risk determination condition.

  (Step S218) The risk determination unit 109 determines whether or not the match flag is 1. When it is 1, it progresses to step S219, and when that is not right, it returns to step S203.

  (Step S219) The danger notification unit 110 outputs a danger message.

  In the flowchart of FIG. 2, the process may be terminated by powering off or a process termination interrupt.

  FIG. 3 is a flowchart showing a determination process as to whether or not the risk determination condition in step S217 in the flowchart of FIG. 2 is met. In the flowchart of FIG. 3, it is assumed that the risk determination condition storage unit 101 stores m risk determination conditions.

  (Step S301) The risk judgment unit 109 sets 0 to the match flag.

  (Step S302) The risk determination unit 109 determines whether or not the music related information acquisition unit 105 has already acquired music related information. If it has been acquired, the process proceeds to step S303. If not, the process returns to the upper process.

  (Step S303) The risk determination unit 109 sets the music related information in the array Target [] that stores information for determining whether or not the risk determination condition is met.

  (Step S304) The risk determination unit 109 determines whether or not the voice related information acquisition unit 106 has acquired the voice related information. If it has been acquired, the process proceeds to step S305, and if not, the process proceeds to step S306.

  (Step S305) The risk determination unit 109 adds sound-related information to Target [].

  (Step S306) The risk determination unit 109 determines whether or not the speed related information acquisition unit 107 has acquired the speed related information. If it has been acquired, the process proceeds to step S307, and if not, the process proceeds to step S308.

  (Step S307) The risk determination unit 109 adds speed-related information to Target [].

  (Step S308) The risk determination unit 109 determines whether or not the distance related information acquisition unit 108 has acquired the distance related information. If it has been acquired, the process proceeds to step S309. If not, the process proceeds to step S310.

  (Step S309) The risk determination unit 109 adds distance related information to Target [].

  (Step S310) The risk determination unit 109 sets 1 to the counter i.

  (Step S311) The risk determination unit 109 determines whether or not the information stored in Target [] matches the risk determination condition [i]. If they match, the process proceeds to step S312; otherwise, the process proceeds to step S313.

  (Step S312) The risk determination unit 109 sets 1 to the match flag. Then, the process returns to the upper process.

  (Step S313) The risk determination unit 109 determines whether i is m. If m, the process returns to the upper process, and if not, the process proceeds to step S314.

  (Step S314) The danger determination unit 109 increments i by 1, and returns to step S311.

(Concrete example)
Next, a specific example of the operation of the in-vehicle device 1 will be described. In this specific example, the moving body is assumed to be an automobile. Further, the in-vehicle device 1 is assumed to be a car navigation system (hereinafter referred to as “car navigation”) installed in an automobile. Further, it is assumed that the risk determination condition storage unit 101 stores the risk determination condition shown in FIG. The risk judgment condition (item name: condition) is associated with an ID (item name: ID) for uniquely identifying the record. Further, it is assumed that the music data storage unit 102 stores the music data shown in FIG. The music data includes an ID (item name: ID) for uniquely identifying the record, a file name of the music data (item name: file name), a music title (item name: title), and a music artist. (Item name: artist), music genre (item name: genre), music length (item name: length), and music data bit rate (item name: bit rate).

(Example 1)
First, it is assumed that a user (driver) gets into a car and starts driving. Then, the voice related information acquisition unit 106 starts acquiring voice related information. At this time, the speed related information acquisition unit 107 and the distance related information acquisition unit 108 also start acquiring the speed related information and the distance related information, respectively.

  Next, it is assumed that the user operates the car navigation and performs an operation for reproducing the music data of “ID = 013” in FIG. Then, the reception unit 103 receives a music reproduction instruction having a file name “MSC_Rock.mp3” that is an identifier of the music data.

  Next, the music playback unit 104 acquires the music data of “ID = 013” in FIG. 5 identified by the file name “MSC_Rock.mp3”, and starts playback of the music data.

  Next, the music related information acquisition unit 105 acquires music related information from the music data being reproduced by the music reproducing unit 104. Here, the music related information acquisition unit 105 analyzes the music data and acquires music related information indicating the tempo (hereinafter referred to as tempo information as appropriate). Then, it is assumed that the music related information acquisition unit 105 has acquired tempo information “160 BPM”.

  Further, it is assumed that the timing immediately after the music related information acquisition unit 105 acquires tempo information is the timing of acquisition of audio related information, speed related information, and distance related information. Then, the voice related information acquisition unit 106, the speed related information acquisition unit 107, and the distance related information acquisition unit 108 acquire the voice related information, the speed related information, and the distance related information, respectively. Here, it is assumed that the voice related information acquisition unit 106 has acquired the absolute voice information “65 dB”. Further, it is assumed that the speed related information acquisition unit 107 acquires the speed change information “rise”. Further, it is assumed that the distance related information acquisition unit 108 has acquired distance information “18 m” indicating the distance from the vehicle ahead.

  An example of the method for acquiring the speed change information is as follows. First, the speed related information acquisition unit 107 acquires acceleration information. Here, it is assumed that the acceleration information is “2 m / s · s”. Then, the speed related information acquisition unit 107 determines whether the acceleration information is greater than 0, less than 0, or 0. Then, the speed related information acquisition unit 107 determines that the acceleration information is greater than 0, and acquires speed change information “rising” indicating that the speed is increasing.

  Next, the risk determination unit 109 acquires the tempo information “160 BPM” acquired by the music related information acquisition unit 105, the absolute audio information “65 dB” acquired by the audio related information acquisition unit 106, and the speed related information acquisition unit 107 acquires. It is determined whether the speed change information “rising” and the distance information “18 m” acquired by the distance related information acquisition unit 108 meet any of the risk determination conditions of FIG. Then, the risk determination unit 109 indicates that the information indicates that the risk determination condition “(BPM ≧ 125) & (voice ≧ 60 dB) & (speed = increased) & (inter-vehicle distance ≦ 20 m) of“ ID = 012 ”in FIG. 4. ". The danger judgment condition is “the tempo of the music is 125 or more, the loudness of the sound is 60 dB or more, the speed is increasing, and the inter-vehicle distance from another vehicle ahead. Means 20 m or less.

  Next, the danger notification unit 110 outputs a danger message. Here, it is assumed that the in-vehicle device 1 includes a screen and outputs an image shown in FIG. In this case, for example, as illustrated in FIG. 7, the danger notification unit 110 outputs information (here, an image) indicating that the danger is superimposed on the already output image.

  Further, for example, in the above, the music related information acquisition unit 105 acquires the tempo information “150 BPM”, the audio related information acquisition unit 106 does not acquire the audio related information, and the speed related information acquisition unit 107 acquires the speed information “60 km / h ”is acquired, and the distance related information acquisition unit 108 acquires the distance information“ 25 m ”. In this case, the risk determination unit 109 determines that these pieces of information match the risk determination condition “(BPM ≧ 125) & (speed ≧ 50 km) & (inter-vehicle distance ≦ 30 m)” of “ID = 013” in FIG. To do. The risk judgment condition means that “the tempo of the music is 125 or more, the speed is 50 km / h or more, and the distance between other vehicles ahead is 30 m or less”.

  Further, for example, in the above, the music related information acquisition unit 105 acquires the tempo information “180 BPM”, the audio related information acquisition unit 106 does not acquire the audio related information, and the speed related information acquisition unit 107 acquires the speed related information. The distance related information acquisition unit 108 acquires the distance information “25 m” and the distance change information “approach” indicating that the distance to the other vehicle is shortened (close to the other vehicle). . In this case, the risk determination unit 109 determines that these pieces of information meet the risk determination condition “(BPM ≧ 125) & (distance ≦ 30 m) & (distance change = approach)” of “ID = 014” in FIG. To do. The risk judgment condition means “the tempo of the music is 125 or more, the distance between the vehicle and the other vehicle in front is 30 m or less, and the vehicle is approaching the other vehicle in front”. .

  An example of the method for acquiring the distance change information is as follows. First, the distance related information acquisition unit 108 acquires distance information at the timing of acquiring the distance change information. Here, it is assumed that the distance information is “26 m”. Next, the distance related information acquisition unit 108 further acquires distance information at the next timing. Here, it is assumed that the distance information is “25 m”. Then, the distance related information acquisition unit 108 determines whether the distance information “25 m” acquired later is larger, smaller, or the same as the distance information “26 m” acquired earlier. Then, the distance related information acquisition unit 108 determines that the distance information acquired later is smaller than the previously acquired distance information, and acquires distance change information “approach” indicating that the distance to the other vehicle is reduced. .

  In the above description, the distance information is usually acquired by the distance related information acquisition unit 1082 included in the distance related information acquisition unit 108.

(Example 2)
In this example, an example of a method for acquiring distance related information using a front image will be described. In addition, since the example of the acquisition method of distance change information was demonstrated in Example 1, only the example of the acquisition method of distance information is demonstrated.

  First, the front image acquisition unit 1081 acquires a front image at the timing of acquiring the distance related information. Here, the front image is assumed to be an image shown in FIG.

  Next, the distance related information acquisition unit 1082 detects a contour from the image of FIG. The distance related information acquisition unit 1082 acquires the image shown in FIG.

  Next, the distance related information acquisition unit 1082 determines whether or not the shape of FIG. 9 is the shape of an automobile. At this time, the distance related information acquisition unit 1082 holds a pattern of the shape of the automobile, and determines whether the shape of FIG. 9 matches or is similar to the pattern. As a result, it is assumed that the distance related information acquisition unit 1082 determines that the shape of FIG. 9 is the shape of an automobile. Then, the distance related information acquisition unit 1082 identifies the region in the image of FIG. 8 shown in the shape of FIG.

  Next, the distance related information acquisition unit 1082 calculates the ratio of the size of the other vehicle area to the size of the front image in FIG. Here, it is assumed that the ratio is “80%”.

  Next, the distance related information acquisition unit 1082 holds a formula for calculating the distance information by calculating the other vehicle ratio, substitutes the calculated other vehicle ratio for the formula, and calculates the distance information. As a result, it is assumed that the distance related information acquisition unit 1082 has acquired the distance information “10 m”.

(Example 3)
In this example, an example in which notification content information is associated with a risk determination condition stored in the risk determination condition storage unit 101 will be described. The risk judgment conditions are as shown in FIG. In FIG. 10, the notification content information is an item name “notification content”. Since the other items are as described above, the description thereof is omitted.

  First, as in Example 1, as a result of the music related information acquisition unit 105 and the like acquiring music related information and the like, the risk determination unit 109 matches the risk determination condition of “ID = 012” in FIG. 10. Assume that you have determined. Then, the risk determination unit 109 acquires the notification content information “warning screen 01” of “ID = 012” in FIG. The notification content information indicates that an image prepared in advance identified by the “warning screen 01” is output on the screen. In addition, it is assumed that the image is stored in a predetermined storage area of the in-vehicle device 1.

  Next, the danger notification unit 110 acquires an image identified by the “warning screen 01” from a predetermined storage area. Then, the danger notification unit 110 outputs the acquired image on the screen. The state of the output is, for example, FIG.

  Further, for example, it is assumed that the risk determination unit 109 determines that the music related information acquired by the music related information acquisition unit 105 and the like matches the risk determination condition of “ID = 015” in FIG. Then, the risk determination unit 109 acquires the notification content information “warning sound 02” of “ID = 015” in FIG. The notification content information indicates that music data prepared in advance identified by “warning sound 02” is reproduced and output to a speaker. The music data is, for example, a warning sound. The music data is stored in a predetermined storage area of the in-vehicle device 1.

  Next, the danger notification unit 110 acquires music data identified by “warning sound 02” from a predetermined storage area. And the danger alerting | reporting part 110 reproduces | regenerates the said acquired music data, and outputs a warning sound to a speaker.

  As described above, according to the vehicle-mounted device 1 according to the present embodiment, the risk prediction is performed according to the music being watched by the user, the voice being uttered by the user, the speed of the moving body, the distance from other moving bodies, and the like. be able to. Thus, for example, it is possible to notify a user who is driving while listening to a song while singing a song, so that an accident can be prevented.

  Further, in each of the above embodiments, it goes without saying that two or more communication units existing in one apparatus may be physically realized by one medium.

  The in-vehicle device in each of the above embodiments may be, for example, a stand-alone device or a server device in a server / client system. In the latter case, for example, risk prediction may be performed as an ASP (Application Service Provider).

  In each of the above embodiments, each process or each function may be realized by centralized processing by a single device or a single system, or distributed by a plurality of devices or a plurality of systems. It may be realized by being processed.

  In each of the above embodiments, each component may be configured by dedicated hardware, or a component that can be realized by software may be realized by executing a program. For example, each component can be realized by a program execution unit such as a CPU reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

  Moreover, the software which implement | achieves the vehicle-mounted apparatus in each said embodiment is the following programs, for example. That is, this program is a computer that can access a risk determination condition storage unit that stores one or more risk determination conditions for determining a risk and a music data storage unit that stores one or more music data. A reception unit for receiving a music reproduction instruction having a music data identifier for identifying music data, and a music reproduction unit for acquiring and reproducing music data identified by the music data identifier of the music reproduction instruction received by the reception unit The music related information acquisition unit that acquires the music related information that is information related to the music data that the music playback unit is playing, and the music related information that is acquired by the music related information acquisition unit is the one or more risk judgments A risk determination unit that determines whether any of the conditions is met, and the risk determination unit determines that any one of the one or more risk determination conditions is met. When the a program for functioning as a risk notification unit for outputting the effect is dangerous.

  Note that the program does not include at least processing that is performed only by hardware.

  The program may be executed by being downloaded from a server or the like, or a program recorded on a predetermined recording medium (for example, an optical disk such as a CD-ROM, a magnetic disk, a semiconductor memory, or the like) is read out. May be executed. Further, this program may be used as a program constituting a program product.

  Moreover, the computer which performs the said program may be single, and plural may be sufficient as it. That is, centralized processing may be performed, or distributed processing may be performed.

  FIG. 11 is a schematic diagram of a computer system 9 that executes the above-described program to realize the in-vehicle device of the above-described embodiment. The above-described embodiments can be realized by computer hardware and a computer program executed thereon.

  In FIG. 11, the computer system 9 includes a computer 901 including a CD-ROM drive 9011 and an FD drive 9012, a keyboard 902, a mouse 903, and a monitor 904.

  FIG. 12 is a block diagram of the computer system 9. In FIG. 12, in addition to the CD-ROM drive 9011 and the FD drive 9012, a computer 901 is connected to an MPU 9013, a ROM 9014 for storing a program such as a bootup program, and an MPU 9013, and temporarily commands the application program. A bus for mutually connecting a RAM 9015 for storing a temporary storage space, a hard disk 9016 for storing application programs, system programs, and data, a CD-ROM drive 9011, an FD drive 9012, an MPU 9013, etc. 9017. Although not shown here, the computer 901 may further include a network card that provides connection to a LAN.

  A program that causes the computer system 9 to execute the functions of the vehicle-mounted device or the like of the above-described embodiment is stored in the CD-ROM 9101 or FD 9102, inserted into the CD-ROM drive 9011 or FD drive 9012, and further stored in the hard disk 9016. May be forwarded. Alternatively, the program may be transmitted to the computer 901 via a network (not shown) and stored in the hard disk 9016. The program is loaded into the RAM 9015 when executed. The program may be loaded directly from the CD-ROM 9101, the FD 9102, or the network.

  The program does not necessarily include an operating system (OS), a third-party program, or the like that causes the computer 901 to execute the functions of the in-vehicle device of the above-described embodiment. The program only needs to include an instruction portion that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 9 operates is well known and will not be described in detail.

  The present invention is not limited to the above-described embodiments, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  As described above, the in-vehicle device according to the present invention has an effect of being able to perform risk prediction according to the music that the user is viewing, and is useful as a navigation device or the like.

DESCRIPTION OF SYMBOLS 1 In-vehicle apparatus 101 Risk judgment condition storage part 102 Music data storage part 103 Reception part 104 Music reproduction part 105 Music related information acquisition part 106 Audio | voice related information acquisition part 107 Speed related information acquisition part 108 Distance related information acquisition part 109 Risk judgment part 110 Danger notification unit 1081 Front image acquisition means 1082 Distance related information acquisition means

Claims (9)

A risk determination condition storage unit that stores one or more risk determination conditions for determining a risk;
A music data storage unit for storing one or more music data;
A reception unit for receiving a music reproduction instruction having a music data identifier for identifying music data;
A music playback unit for acquiring and playing back music data identified by a music data identifier included in the music playback instruction received by the reception unit;
A music related information acquisition unit for acquiring music related information, which is information related to music data being reproduced by the music reproduction unit;
A risk determination unit that determines whether or not the music related information acquired by the music related information acquisition unit matches any of the one or more risk determination conditions;
An in-vehicle device comprising: a danger notification unit that outputs a danger message when the risk determination unit determines that any one of the one or more risk determination conditions is met. The danger determination condition is a condition having a condition related to music related information that is information related to music data and a condition related to audio related information that is information related to a voice uttered by a user.
A voice related information acquisition unit for acquiring voice related information;
The risk judging unit
The music related information acquired by the music related information acquisition unit and the audio related information acquired by the audio related information acquisition unit determine whether or not any of the one or more risk determination conditions is met. The vehicle-mounted device according to 1. The risk determination condition is a condition that also has a condition related to speed-related information that is information related to the speed of the moving object,
A speed-related information acquisition unit that acquires speed-related information;
The risk judging unit
The in-vehicle device according to claim 1, wherein the speed-related information acquired by the speed-related information acquisition unit also determines whether any of the one or more risk determination conditions is met. The risk determination condition is a condition that also has a condition related to distance-related information, which is information related to a distance from another moving body,
A distance-related information acquisition unit for acquiring distance-related information;
The risk judging unit
The in-vehicle device according to any one of claims 1 to 3, wherein the distance-related information acquired by the distance-related information acquisition unit also determines whether or not any of the one or more risk determination conditions is met. . The distance related information acquisition unit
Forward image acquisition means for acquiring a forward image that is an image in front of the moving body;
A distance-related information acquiring unit that detects a moving object from the front image acquired by the front image acquiring unit and acquires distance-related information indicating a distance from another moving object that is a moving object in the front image; Item 4. The vehicle-mounted device according to Item 4. The danger notification unit
The in-vehicle device according to any one of claims 1 to 5, wherein an output corresponding to a risk determination condition determined by the risk determination unit to match is performed. The danger notification unit
The in-vehicle device according to any one of claims 1 to 6, wherein a screen indicating that it is dangerous is output. A risk determination condition storage unit that stores one or more risk determination conditions for determining that it is dangerous, a music data storage unit that stores one or more music data, a reception unit, a music playback unit, and a music A risk prediction method performed using a related information acquisition unit, a risk determination unit, and a risk notification unit,
The reception unit
A reception step of receiving a music reproduction instruction having a music data identifier for identifying music data;
The music playback unit is
A music playback step of acquiring and playing back music data identified by a music data identifier included in the music playback instruction received by the receiving unit;
The music related information acquisition unit,
A music related information acquisition step of acquiring music related information, which is information related to music data being reproduced by the music reproducing unit;
The risk determination unit
A risk determination step of determining whether or not the music related information acquired by the music related information acquisition unit matches any of the one or more risk determination conditions;
The danger notification unit
A risk prediction method comprising: a risk notification step of outputting a danger message when the risk determination unit determines that any one of the one or more risk determination conditions is met. A computer accessible to a risk determination condition storage unit storing one or more risk determination conditions for determining a risk and a music data storage unit storing one or more music data;
A reception unit for receiving a music reproduction instruction having a music data identifier for identifying music data;
A music playback unit for acquiring and playing back music data identified by a music data identifier included in the music playback instruction received by the reception unit;
A music related information acquisition unit for acquiring music related information, which is information related to music data being reproduced by the music reproduction unit;
A risk determination unit that determines whether or not the music related information acquired by the music related information acquisition unit matches any of the one or more risk determination conditions;
A program for functioning as a risk notification unit that outputs a danger when the risk determination unit determines that any one of the one or more risk determination conditions is met.