JP2007303981A - Navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus which selects and reproduces a music whose tempo is different from that of a music reproduced currently, when a drive condition is varied suddenly due to traffic congestion, traffic restriction and the like. <P>SOLUTION: When ripping a music, tempo information is detected by a tempo detecting section, and stored in a memory section along with music data. When selecting the music data stored in the memory section by using a music data selecting section, a control section carries out its control operation such that the music data selecting section selects the music data having tempo information different from that of the music data being reproduced currently, in response to decision results of a vehicle drive condition decision section. Therefore, the music data having the tempo information quite different from that of the music data being reproduced currently are selected in accordance with a drive condition of a vehicle, and reproduced as the music following the music data being reproduced currently. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a navigation apparatus having an audio function mounted on a vehicle, and more specifically, a navigation apparatus having an audio function for automatically selecting and reproducing a reproduction source in accordance with a running state of the vehicle. It is about.

  The audio function provided in the conventional navigation apparatus is often composed of a plurality of sources such as CD, MD, tuner, changer, HDD audio, etc., and the user can select music from the plurality of sources to play music in the car. It is configured so that it can be played. There is an audio function of such a navigation device that reproduces audio of a genre preferred by the driver in consideration of the vehicle environment such as vehicle position, outside temperature, weather, day and night (for example, Patent Document 1).

JP 2005-145322 A

  However, if the ambient temperature, weather, day and night, etc. are not set in advance, the audio cannot be played in consideration of the vehicle environment. There has been a problem that the audio to be played cannot be changed when the driving situation suddenly changes due to traffic regulations or the like.

  Accordingly, an object of the present invention is to provide a navigation device that selects and plays music having a tempo different from the tempo of music currently being played when the driving situation suddenly changes due to traffic jams or traffic restrictions.

  The navigation device according to the present invention includes a tempo detection unit that detects tempo information of the music, a tempo detection unit that detects music tempo information, and a tempo detection unit that rips music and stores it as music data. A storage unit for storing detected tempo information; a music data selection unit for selecting a next song from a plurality of music data stored in the storage unit; a traveling state determination unit for detecting a traveling state of the vehicle; and the traveling And a control unit that controls the music data selection unit based on the determination result of the state determination unit.

  According to the navigation device of the present invention configured as described above, when ripping music, the tempo detection unit detects the tempo information and stores it in the storage unit together with the music data, and the music stored in the storage unit When data is selected by the music data selection section, the music data selection section selects music data having tempo information different from the tempo information of the currently reproduced music data according to the determination result of the vehicle running state determination section. Thus, the music data having the tempo information completely different from the tempo information of the music data currently reproduced according to the running state of the vehicle is selected and the music data currently being reproduced is controlled. Can be played as the next song.

  The travel state determination unit of the navigation device of the present invention includes a travel speed detection unit that detects a travel speed of the vehicle, and a traffic information reception unit that receives traffic information of a road on which the vehicle is traveling. The vehicle is configured to determine whether or not the vehicle is decelerated due to traffic jam from the speed detected by the travel speed detector and the traffic information received by the traffic information receiver.

  According to the navigation device of the present invention configured as described above, the vehicle includes a travel speed detection unit that detects the travel speed of the vehicle, and a traffic information reception unit that receives traffic information of the road on which the vehicle is traveling. By configuring the state determination unit, it is possible to determine whether the vehicle speed has decreased due to the driver's intention or whether the vehicle speed has decreased due to traffic congestion, and the travel state determination unit determines that the vehicle is decelerating due to traffic congestion The music data selection part is controlled by the control part so that the music data different from the music data currently being played is automatically selected. Different music can be played to change the driver's mood.

  Further, the control unit of the navigation device of the present invention, when the travel state determination unit determines that the vehicle is slowed down due to traffic congestion, music data having the tempo information different from the music data being reproduced on the navigation device is the music data music selection unit. Music data having different tempo information is reproduced from the music data after the reproduction of the music data being reproduced is completed.

  According to the navigation device of the present invention configured as described above, when the driving state determination unit determines that the vehicle is decelerated due to traffic jam, the control unit performs music data different from the music data reproduced by the navigation device. Since the data selection unit can select music and music data having tempo information different from the currently reproduced music data selected by the music data selection unit can be reproduced after the currently reproduced music data. In addition, it is possible to prevent a driver's change of mood, frustration, lack of concentration, etc. in a traffic jam.

  Furthermore, the integrated circuit of the present invention searches for music to be reproduced from tempo information added to the music data, a conversion unit that rips music and converts it into music data, a tempo detection unit that detects tempo information of the music, and The music data is selected so as to reproduce music data having different tempo information in the next song based on the determination result of the driving state determination unit, the driving state determination unit detecting the driving state of the vehicle, and the driving state determination unit And a control unit that controls the music selection unit. By configuring the integrated circuit in this way, the function can be used by providing the integrated circuit in the navigation device.

  In the present invention, the driving state of the vehicle is determined by the driving state determination unit, and the music data having the tempo information completely different from the tempo information of the music data currently reproduced according to the driving state is displayed by the music data song selection unit. You can select and play a song, and the music data song selection part controls the song selection part to play the up-tempo music when slow-tempo music is playing in a traffic jam. Even if sleepiness is induced by music, uptempo music with a different tempo is played back, so that it is possible to suppress the induction of sleepiness and lack of concentration by changing the driver's mood. In addition, by providing means to select music based on traffic information and travel speed by VICS, it is possible to determine that the driver is driving monotonously in the driving state of the driver, and this makes it possible to change the tempo and tune. To change the driver's mood.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the navigation device in the first embodiment.

As shown in FIG. 1, the navigation device N of the present invention includes a CPU 1 that controls the navigation device N, a ROM 2 that stores basic programs such as BIOS, an HDD 3 that stores various data and programs of the navigation device N, A RAM 4 that temporarily stores various data of the navigation device N, an audio LSI 5 that processes audio data, a drawing LSI 6 that processes image data, a VRAM 7 that stores image data processed by the drawing LSI 6, and a CD / DVD A compression LSI 8 that compresses the music input from the drive 10 or the external input unit 14 to be stored in the HDD 3; a tempo extraction LSI 9 that extracts the tempo of the music input from the CD / DVD drive 10 or the external input unit 14; CD / DVD drive 10 capable of playing and reading music, and data I / O (Input / Output) 11 for inputting / outputting, GPS receiver 12 for receiving GPS data connected to I / O 11, VICS receiver 13 for receiving traffic jam information, and navigation device N An external input unit 14 for inputting music / images by connecting an external device or the like, a speed sensor 15 for detecting the speed of the vehicle, a gyro sensor 16 that is an autonomous navigation unit for detecting the traveling direction of the car, and voice data A speaker 17 that outputs a corresponding voice and a display unit 18 that displays information such as map display and route guidance are provided, and each component is connected by a bus V.

  In order to take in music and video from outside (download), the navigation device N is configured to include an external server and a communication unit connected to the Internet, and download music and video from contents provided by the external server and the Internet. You may make it use in. The CPU 1, ROM 2, RAM 4, audio LSI 5, drawing LSI 6, VRAM 7, compression LSI 8, tempo extraction LSI 9 may be configured as one integrated circuit C, and the audio LSI 5, drawing LSI 6, compression LSI 8, tempo extraction LSI 9 It is good also as an integrated circuit collectively.

  Here, the CPU 1 is configured to control operations such as route guidance, map display, and traffic jam information display of the navigation device N, and control the voice LSI 5, the compression LSI 8, the tempo extraction LSI 9, and the like. In addition, the CPU 1 includes a traveling state determination unit that determines the traveling state from the state of the currently traveling road and the state of the vehicle obtained from the GPS receiver 12, the VICS receiver 13, and the speed sensor 15, and also determines the traveling state. The music data selection section that selects music with faster tempo information than the music that is currently being played when it is determined that the traffic is slowing down due to traffic congestion, and the music that has been selected by the music data selection section It is configured to include a control unit that controls the music to be played after the music ends.

  The HDD 3 stores map data necessary for route guidance of the navigation device N, voice data used for voice guidance, a program for operating the navigation device N, and the like, and is input from the CD / DVD drive 10 or the external input unit 14. Music and music tempo information can be stored. Note that when music is stored in the HDD 3, it is configured so that it can be ripped using the compression LSI 8 and stored as music data, and the tempo of the music is extracted using the tempo extraction LSI 9 and stored in association with the music data. It is configured to be possible.

  The tempo extraction LSI 9 detects the sound generation time and level of each constituent sound from the music signal input from the CD / DVD drive 9 and outputs the sound as a sound time-series signal, and the sound generation time detection means detects the sound generation time. Detected by the auto-correlation calculating means for calculating the autocorrelation function of the generated time series signal, the peak position detecting means for detecting the position and level of the peak portion from the output signal of the auto-correlation calculating means, and the peak position detecting means A beat structure analysis means for analyzing the beat structure of the input music signal from the position and output level pattern of the peak portion, and a music signal from the position and output level of the peak portion detected by the peak position detection means. A temporary tempo calculating means for calculating a tempo candidate of the tempo, a tempo candidate calculated by the temporary tempo calculating means and the beat structure analyzing means In based on the beat structure and found, using the tempo determining means for determining the tempo of the input music signal is configured to extract the tempo of the music. The tempo extraction is described in Japanese Patent Application Laid-Open No. 2002-116754 filed earlier by the applicant, and detailed description thereof is omitted.

The CD / DVD drive 10 is configured so that music can be reproduced from a music CD or music DVD, and a video DVD or the like can also be reproduced. The music reproduced from the CD / DVD drive 10 is configured to be ripped by the compression LSI 8 and the tempo information detected by the tempo extraction LSI 9 is stored in the HDD 3 as music data.

  The GPS receiver 12 detects the vehicle position of the vehicle in the navigation device N. The GPS receiver 12 displays a map corresponding to the vehicle position detected by the GPS receiver on the display unit 18 of the navigation device N and the vehicle. The position can be displayed.

  The VICS receiver 13 receives traffic information provided from an external public institution or information provider. In addition, traffic jam information can be acquired and used using FM multiplex broadcasting or an optical beacon as the traffic jam information.

  The external input unit 14 is configured to be used when connecting the navigation device N and an external device. For example, as an external device connected to the external input unit 14, for example, a portable audio can be connected, and music stored in the portable audio connected to the external input unit 14 is played by the navigation device N. Can do. Further, the navigation device N may be configured to be able to operate the portable audio by connecting to the external input unit 14.

  The speed sensor 15 detects the speed of the vehicle. For example, the speed sensor 15 is configured to detect the speed of the vehicle from vehicle speed pulses output from the vehicle.

  The display unit 18 can use a liquid crystal display, a plasma display, an organic EL display, and the like, and can display a map with the navigation device N and can overlay traffic information on a road displayed on the map. The touch panel is configured such that an operation or setting of the navigation device N can be performed by touching an item displayed on the display unit 18 with a finger or the like.

  Here, processing for storing (ripping) music in the HDD 3 and extracting the tempo will be described in detail with reference to the drawings. FIG. 2 is a flowchart showing processing when music is stored in the navigation device. FIG. 3 is a schematic diagram showing the state of tempo information and music data stored in the HDD.

  As shown in FIG. 2, when a music medium is inserted into the CD / DVD drive 10 of the navigation device N (S1), the music recorded on the music medium such as a music CD or music DVD is ripped using the compression LSI 8. The music data is saved (S2). At this time, the presence / absence of tempo information of the music is searched from a database such as CDDB (Cd DataBase) in which the tempo information of the music data is stored in the navigation device N (HDD 3) (S3).

  If it is determined that there is no music tempo information in the database (S3, NO), the tempo of the music (music) is extracted using the tempo extraction LSI 9 (S4), and the music data and the tempo information are associated with each other in the HDD 3. Save (S5). If the tempo information of the music is in the database (S3, YES), the music data and the tempo information are associated with each other and stored in the HDD 3 (S5).

As described above, the music ripping and tempo extraction in the navigation device N of the present invention is performed by ripping music data when a music medium is inserted, and determining whether or not tempo information exists in a database such as CDDB for each music data. When there is tempo information corresponding to music data in the database, the tempo information and music data are stored in the HDD 3, and when there is no tempo information corresponding to music data in the database, the tempo extraction LSI 9 is used to store the music data. The tempo is extracted, and the extracted tempo information and music data are stored in the HDD 3. The music data stored in the HDD 3 stores the song number, tempo information, data type, date of update, artist name, etc., as shown in FIG.

  Next, the operation of the navigation device N configured as described above will be described in detail with reference to the drawings. FIG. 4 is a flowchart showing a process of changing the music being reproduced according to a change in the running state of the vehicle. It is assumed that a plurality of music data and tempo information corresponding to the music data are stored in the HDD 3.

As shown in FIG. 4, when music is being reproduced from the HDD 3 of the navigation device N, the CPU 1 uses the VICS receiver 13 to acquire traffic congestion information on the road on which the vehicle is currently traveling (S10). Next, the traveling speed of the vehicle is detected using the speed sensor 15 of the navigation device N, and it is determined whether or not the speed of the vehicle has been reduced (S11). If it is determined that the speed of the vehicle is decelerated (S11, YES), the acquired traffic information is compared with the deceleration state of the vehicle (S12), and it is determined whether the vehicle is decelerated due to the traffic (S13). If it is determined in S13 that the speed is reduced due to traffic jam (S13, YES), the tempo information of the currently playing music is confirmed (S14), and the music having the tempo information faster than the playing music is stored in the HDD3. Search from the music stored in (S15). Then, after the currently reproduced music is finished, music having tempo information faster than the tempo of the currently reproduced music is reproduced after the currently reproduced music (S16).
When it is detected whether the vehicle speed is decelerated (S11), when the vehicle speed is not decelerating (S11, NO), monitoring is performed until the vehicle speed decelerates again.

  The navigation device N of the present invention in the first embodiment configured as described above determines the traveling state of the vehicle by the traveling state determination unit, and the traveling state determination unit determines that the deceleration of the vehicle speed is a deceleration due to a traffic jam. Then, since the control unit controls to play music having a faster tempo than the music currently being played back, for example, as shown in FIG. 5A, the music L1a and music L1a currently being played back As shown in FIG. 5 (b), the music L1a that is currently being played back can be reproduced as shown in FIG. 5B, even if the playback is based on the playlist L1 such as music L1b that is played after Since the playlist L2 is changed so that the music L1d, which is tempo information 224BPM having tempo information faster than the music L1a after 170BPM of the tempo information, is changed. By playing music with tempo information faster than the tempo information of the music currently being played when the driving situation suddenly changes, etc., it is possible to change the mood moderately and concentrate in traffic It can prevent power loss, stress and drowsiness.

  Further, when playing music stored in the HDD 3 in the navigation device N, not only when playing based on the play lists L1 and L2 as shown in FIGS. 5 (a) and 5 (b), for example, As shown in FIG. 5 (c), when the vehicle decelerates due to a traffic jam even when not being played based on the play list, the music with the tempo information faster than the tempo information of the currently playing music is next. You may comprise so that it may reproduce | regenerate as a music.

(Second Embodiment)
Next, a second embodiment will be described in detail with reference to the drawings. In addition, the structure of the navigation apparatus in 2nd Embodiment attaches | subjects the same code | symbol as 1st Embodiment, and abbreviate | omits detailed description. In the first embodiment, music is selected for music stored in the HDD, but in the second embodiment, a state in which portable audio or the like is connected from an external input will be described in detail. . FIG. 6 is a block diagram illustrating a state in which portable audio is connected to the external input unit in the navigation device according to the first embodiment. FIG. 7 is a flowchart showing processing in which portable audio is connected to the external input unit of the navigation device. FIG. 8 is a flowchart showing a process of changing the music to be played in accordance with a change in the running state of the vehicle.

  As shown in FIG. 6, when the portable audio Au is connected to the external input unit 14 of the navigation device N, is the navigation device N music data or music data stored in the portable audio Au? And so on. Here, processing when the portable audio is connected to the navigation device N will be described with reference to the drawings.

  As shown in FIG. 7, when the portable audio Au is connected to the navigation device N, the navigation device N determines whether or not the portable audio Au is connected (S20). At this time, if it is determined that the portable audio Au is connected (S20, YES), it is determined whether or not the music stored in the portable audio Au is music data (S26). If it is determined that the music data is stored in the portable audio Au (S26, YES), it is determined (determined) whether the music data has tempo information (S27). If it is determined that there is tempo information (S27, YES), the music data and tempo information are stored in the HDD 3 of the navigation device N (S25). In S27, when it is determined whether there is tempo information or not (S27, NO), the tempo of the music stored in the portable audio Au is extracted (S28). The music data and tempo information are stored in the HDD 3 (S25).

  If it is determined in S26 that the music input from the portable audio Au is not music data (S26, NO), the navigation device N rips and converts it into music data (S22). Then, it is determined whether or not the tempo information of the input music is in the database (S23). When there is tempo information (S23, YES), the music data and tempo information are stored in the HDD 3 (S25). If there is no tempo information in the database in S23 (S23, NO), the music tempo is extracted (S24), and the music data and tempo information are stored in the HDD 3 (S25). If it is determined in S20 that the portable audio Au is not connected (S20, NO), it is determined whether or not a medium is inserted into the CD / DVD drive 10 (S21), and the CD / DVD drive 10 is loaded. When a medium is inserted (S21, YES), a process of ripping and converting to music data is performed (S22), and the same process as described above is performed for other processes. If the portable audio Au is not connected (S20, No), and no media is inserted in the CD / DVD drive 10 (S21, NO), the process of extracting tempo information is terminated.

  Next, the operation of the navigation device N according to the change in the driving situation will be described in detail with reference to a flowchart. When all the music stored in the portable audio connected to the navigation device N is stored in the HDD 3 of the navigation device N, the same processing as that shown in FIG. 4 of the first embodiment is performed. Thus, the music being played can be changed according to the running state, and detailed description will be omitted.

As shown in FIG. 8, first, the navigation device N determines whether or not music stored in the HDD 3 is being reproduced (S30). At this time, if the navigation device N recognizes that the music stored in the HDD 3 is being played back from the portable audio Au instead of being played back (S30, NO), traffic congestion information relating to the road or route on which the vehicle is traveling is displayed. Obtain (S31). When it is determined that the speed of the vehicle has decreased while the vehicle is traveling in this state (S32, YES), the acquired traffic jam information is compared with the vehicle deceleration state (S33), and deceleration due to traffic jam is performed. It is determined whether or not (S34). If it is determined in S34 that the vehicle is slowed down due to traffic jam (S34, YES), the tempo information of the currently playing music is confirmed (S35), and the music having the tempo information faster than the music being played is carried by the mobile phone. A search is made from music stored in the audio Au (S36), and music having tempo information faster than the tempo of the currently played music is selected and played after the currently played music ends (S37). .
When monitoring the deceleration of the vehicle speed (S32) and when the vehicle speed is not decelerating (S32, NO), monitoring is performed until the vehicle speed is decelerated.

If it is determined that the music data stored in the HDD 3 is being reproduced (S30, YES), traffic congestion information on the road on which the vehicle is traveling is acquired (S31). Next, the vehicle speed is detected using the speed sensor 15 of the navigation device N, and it is determined whether or not the vehicle speed has been reduced (S32). If it is determined that the speed of the vehicle is decelerated (S32, YES), the acquired traffic information is compared with the deceleration state of the vehicle (S33), and it is determined whether the vehicle is decelerated due to the traffic (S34). If it is determined in S34 that the speed is reduced due to a traffic jam (S34, YES), the tempo information of the currently playing music is confirmed (S35), and the music having the tempo information faster than the playing music is stored in the HDD3. Search from the music stored in the (S36). Then, after the currently reproduced music is finished, music having tempo information faster than the tempo of the currently reproduced music is reproduced after the currently reproduced music (S37).
If the music data of the HDD 3 is not being reproduced (S30, NO) and the music data of the portable audio Au is not being reproduced (S38, NO), it is determined that another source is selected. Maintain the output of other sources.

  The navigation device N of the present invention in the second embodiment configured as described above is configured to reproduce the music data stored in the portable audio Au connected to the navigation device N or the internal HDD 3 while playing back the music data. When the driving state is determined by the driving state determination unit, and it is determined by the driving state determination unit that the speed reduction of the vehicle is due to traffic congestion, it is possible to play moderately by playing music with a faster tempo than the currently playing music. It is possible to change the mood and to prevent a decrease in concentration, stress and sleepiness during a traffic jam.

(Third embodiment)
Next, a third embodiment will be described in detail with reference to the drawings. The configuration of the navigation device in the third embodiment is a configuration in which external communication means is added to the configuration shown in the second embodiment, and the same configuration of the navigation device in the second embodiment. The same reference numerals are given to the portions, and detailed description is omitted. FIG. 9 is a block diagram illustrating a configuration of the navigation device according to the third embodiment. FIG. 10 is a flowchart showing a process for changing music to be played in accordance with a change in the running state of the vehicle in the third embodiment.

  As shown in FIG. 9, the third navigation device N has a configuration in which the external communication means 19 is provided in the configuration of the second embodiment shown in FIG. 6, and detailed description thereof is omitted. Here, the external communication means 19 is configured to be connected to an external network, the Internet, and the like, and information such as music data, music information, and traffic jam information is transmitted to the navigation device N via the external network. It is configured so that it can be acquired.

  Next, a process for changing the music being played back by the navigation device N according to a change in the traveling state of the vehicle will be described with reference to FIG.

The navigation device N always receives the state information of the road on which the vehicle is traveling in a state where the external communication means 19 is used to download music from an external network such as the Internet and reproduce the music (S40). At the same time (S41), the vehicle speed is monitored for deceleration (S42). At this time, if the speed of the vehicle is decelerated (S42, YES), whether or not the deceleration of the vehicle is a deceleration due to a traffic jam is compared with the traffic jam information received from VICS or the like (S43). At this time, if it is determined that the speed is reduced due to traffic jam (S44, YES), the tempo information of the music being played back is confirmed (S45), and music with tempo information different from the music being played back is used using an external network. Search is performed (S46). The search is repeated until a tempo different from the tempo of the music being played is found (S47). If it is determined that there is music having a tempo different from the music being played (S47, YES), the music is being played. The music is downloaded from the external network so that the music having the next tempo can be reproduced next to the music (S48), and the downloaded music is reproduced after the currently reproduced music is completed (S49).
In S42, when deceleration of the vehicle speed is not detected (S42, NO), or when it is determined that the vehicle is not decelerated due to traffic jam (S44, NO), the vehicle speed is monitored again. (S42).

  The navigation device N according to the third embodiment configured as described above has a tempo that is higher than that of the currently played music depending on the driving state of the vehicle even when the music data is downloaded and played from the external network. You can automatically search for, download, and play fast songs.

  Also, when downloading music from an external network and playing music, it is configured to search and download music with a tempo faster than the music currently playing according to the driving state of the vehicle, The present invention is not limited to the present invention. For example, the music data stored in the HDD 3 mounted in the navigation device N or the portable audio Au connected to the navigation device N is searched for and played back. Also good. With this configuration, even when music is downloaded and played back using an external network, music data stored in the HDD 3 or the portable audio Au can be used.

  Further, when music data of the HDD 3 of the navigation device N or the portable audio Au is being reproduced, music having a faster tempo than the music currently being reproduced in accordance with changes in the running state of the vehicle is used using an external network. You may comprise so that it may search, download and reproduce. With this configuration, music that is not stored in the HDD 3 or the portable audio Au can be downloaded and played.

(Fourth embodiment)
From the first embodiment to the third embodiment, it is configured to search and play music with a tempo speed faster than the tempo speed of the music currently being played according to the running state of the vehicle. However, the present invention is not limited. For example, genres are classified as slow tempo, medium tempo, and up tempo according to the tempo speed, and music to be played back is selected based on the classification. It may be configured. FIG. 11A is a schematic diagram illustrating genre classification according to the tempo speed, and FIG. 11B is a schematic diagram illustrating a music list including the genre classification. FIG. 12 is a flowchart showing the processing of the navigation device in the fourth embodiment. In addition, the configuration of the navigation device in the fourth embodiment can use any of the first to third embodiments, and detailed description thereof is omitted.

  As shown in FIG. 11 (a), the navigation device N in the fourth embodiment, based on the tempo information of the music data extracted at the time of ripping, has a slow tempo of 40-80 BPM, a medium tempo of 81-160 BPM, and a 160-240 BPM. 11 is classified as an up-tempo, and as shown in FIG. 11B, when ripping music data to the HDD 3 of the navigation device N, a tempo speed, a slow tempo, a medium tempo, and an up-tempo are recorded. Even when music is downloaded using an external network using the portable audio Au or the external communication means 19 that does not rip, the tempo information is extracted if there is tempo information, and the tempo information is extracted if there is no tempo information. Can be used.

Next, processing of the navigation device N according to the fourth embodiment will be described with reference to the drawings.
As shown in FIG. 12, in a state where music is being played by the navigation device N, the navigation device N acquires traffic information from the VICS receiver 13 (S50). And
It is detected from the signal transmitted from the speed sensor 15 whether or not the speed of the vehicle has been reduced while the vehicle is running (S51). If it is detected that the speed has been reduced (S51, YES), the VICS receiver 13 is detected. The traffic jam information acquired in step S3 is compared with the deceleration state (S52). If it is determined that the traffic is slowed down due to traffic jam (S53, YES), the genre of the music being played back is confirmed (S54), Searches for music of different genres (S55). Then, the music of the genre different from the searched music being played is played as soon as the music currently playing is over (S56).
In S51, when deceleration of the vehicle speed is not detected (S51, NO), monitoring is performed until deceleration of the vehicle speed is detected (S51). If it is determined in S53 that the vehicle is not decelerated due to traffic jam (S53, NO), monitoring is performed until a deceleration of the vehicle speed is detected again (S51).

  For example, referring to FIG. 11B, when it is determined that the currently played music is playing a slow tempo song of title 4, the speed of the vehicle is decelerated due to traffic congestion. Title 3 which is a medium-tempo song can be played after the music of title 4 has been played.

  The navigation device of the fourth embodiment configured as described above classifies genres such as slow tempo, medium tempo, and up tempo in advance from tempo information, and selects a genre different from the genre being reproduced. By regenerating, the driver can change his / her mood, and it is possible to prevent a decrease in concentration, stress, and drowsiness in a traffic jam.

  In the fourth embodiment, the slow tempo, medium tempo, and up tempo are classified and used as genres. However, the present invention is not limited to the tempo information. It may be configured to automatically select a music to be played in a traffic jam, in accordance with a genre such as the above.

  As described above, in the navigation device of the present invention configured as described above, when ripping music, the tempo detection unit detects tempo information and stores it in the storage unit together with the music data, and is stored in this storage unit. When music data is selected by the music data selection section, the music data selection section selects music data having tempo information different from the tempo information of the currently played music data according to the determination result of the vehicle running state determination section. The music is currently played back by selecting music data having tempo information completely different from the tempo information of the music data currently being played back according to the running state of the vehicle. This is useful as a navigation device that can be reproduced as the next song of data and can suppress the driver's attention and sleepiness in a traffic jam.

The block diagram which shows the structure of the navigation apparatus in 1st Embodiment. Flow chart showing processing when music is stored in the navigation device Schematic diagram showing the state of tempo information and music data stored in HDD Flow chart showing the process of changing the music being played due to changes in the running state of the vehicle (A) Schematic diagram showing a playlist before the vehicle speed is decelerated (b) Schematic diagram showing a playlist after the vehicle speed has been decelerated (c) Music to be played when the vehicle speed is decelerated is changed Schematic diagram showing the state The block diagram which shows the state which connected the portable audio | voice to the external input part to the navigation apparatus in 1st Embodiment. Flow chart showing processing of connecting portable audio to external input unit of navigation device Flow chart showing processing for changing music to be played according to changes in the running state of the vehicle The block diagram which shows the structure of the navigation apparatus in 3rd Embodiment. The flowchart which shows the process which changes the music reproduced | regenerated by the change of the driving | running | working condition of the vehicle in 3rd Embodiment. (A) Schematic diagram showing genre classification according to tempo speed (b) Schematic diagram showing music list including genre classification The flowchart which shows the process of the navigation apparatus in 4th Embodiment

Explanation of symbols

1 CPU
2 ROM
3 HDD
4 RAM
5 Voice LSI
6 Drawing LSI
7 VRAM
8 Compression LSI
9 Tempo extraction LSI
10 CD / DVD drive 11 I / O
12 GPS receiver 13 VICS receiver 14 External input unit 15 Speed sensor 16 Gyro sensor 17 Speaker 18 Display unit 19 External communication means Au Portable audio C Integrated circuit V bus
N Navigation device

Claims (4)

In a navigation device mounted on a vehicle that is configured to be ripped and stored as music data by ripping music,
A tempo detection unit for detecting tempo information of the music;
A storage unit for storing the music data and tempo information detected by the tempo detection unit;
A music data selection unit for selecting a next song having a different tempo information from a plurality of music data stored in the storage unit;
A traveling state determination unit that detects a traveling state of the vehicle;
A navigation device comprising: a control unit that controls the music data selection unit based on a determination result of the traveling state determination unit. The travel state determination unit includes a travel speed detection unit that detects a travel speed of the vehicle, and a traffic information reception unit that receives traffic information of a road on which the vehicle is traveling, and is detected by the travel speed detection unit. The navigation apparatus according to claim 1, wherein it is determined whether or not the vehicle is decelerated due to a traffic jam based on the speed and the traffic information received by the traffic information receiving unit. When the driving state determining unit determines that the vehicle is decelerated due to traffic jam, the control unit causes the music data selection unit to select music data having the tempo information different from the music data being played back by the navigation device, and 3. The navigation apparatus according to claim 1, wherein music data having the tempo information different from the music data is played after the music data is played back. A converter that rips music and converts it into music data;
A tempo detection unit for detecting tempo information of the music;
A music data selection section for searching for music to be played back from tempo information added to the music data;
A traveling state determination unit that detects the traveling state of the vehicle;
An integrated circuit comprising: a control unit that controls the music data selection unit so as to reproduce music data having different tempo information for a next song based on a determination result of the running state determination unit.

Images