JP2012103046A - Map display device, music playing method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To play music in accordance with running state at the same time when a map display device displays a map.SOLUTION: A map display device includes a GPS processing unit 11 for detecting a current position, a calculating unit 19 for calculating a travel speed of a moving vehicle, a map data storage unit 15, a display processing unit 17 for displaying a map image including the current position on a display 3, a play list storage unit 21 for storing play lists including one or more pieces of music, music selecting unit 25 for selecting the play lists in accordance with the travel speed, and a music playing unit 27 for playing a plurality of pieces of music included in the selected play list in a certain order.

Description

  The present invention relates to a technique for reproducing music on a map display device that displays a map image.

  There is an apparatus that performs navigation or the like by displaying a map image in a general-purpose portable information processing apparatus (for example, Patent Document 1).

JP 2010-101838 A

  Incidentally, some conventional navigation devices perform voice guidance. However, no audio is output except when guidance is required. Some general-purpose portable information processing apparatuses can store music data of many music pieces. By reproducing the music data, the user of such an information processing apparatus can enjoy favorite music anytime and anywhere.

  There are many users who want to enjoy music even when such an information processing apparatus performs map display such as navigation. In particular, when the vehicle is traveling, the user's mood changes depending on the traveling state at that time.

  Accordingly, an object of the present invention is to provide a technique for reproducing a music corresponding to a running state at the same time that a map display device displays a map.

  A map image display device according to an embodiment of the present invention is a map image display device that can be mounted on a mobile object, and includes a current position detection unit that detects a current position of the mobile object, and a travel of the mobile object. A driving state detecting means for detecting a state, a map data storing means for storing map data for displaying a map image, map data is acquired from the map data storing means, and detected by the current position detecting means According to the map display means for displaying a map image including the current position on the display, the music storage means for storing a plurality of music groups including one or more music, and the running state detected by the running state detection means, Selection means for selecting any one music group from a plurality of music groups stored in the music storage means, and the selection means selected by the selection means A plurality of songs included in the music group, and a reproduction means for sequentially reproduced in a predetermined order.

  In a preferred embodiment, the running state detection means detects the running speed of the mobile body, and a plurality of song groups in the song storage means are associated with different running speed ranges in advance, The selection unit may select a playlist corresponding to the traveling speed detected by the traveling state detection unit.

  In a preferred embodiment, the selecting means corresponds to a running state detected by the running state detecting means when the playing means finishes playing the first music included in the first music group. When the first music group is different from the second music group, the playback means is included in the second music group after the playback of the first music is finished. You may make it start reproduction | regeneration of the music currently stored.

  In a preferred embodiment, when the first music group and the second music group are the same, the reproducing means performs the first music in the predetermined order after the reproduction of the first music is completed. You may make it start reproduction | regeneration of the 2nd music defined as the next order of 1 music.

  In a preferred embodiment, the selecting means corresponds to the running state detected by the running state detecting means when the playing means finishes playing any one song included in the second song group. And when the third music group is the same as the first music group, the playback means is determined as the next order of the first music in the predetermined order. You may make it start reproduction | regeneration of the 2nd music which has been carried out.

It is a functional lineblock diagram of map display device 1 concerning one embodiment of the present invention. An example of the contents stored in the playlist storage unit 21 is shown. It is explanatory drawing of the switching timing of a play list. It is a flowchart which shows the music reproduction process procedure in the map display apparatus.

  Hereinafter, a map display device 1 according to an embodiment of the present invention will be described with reference to the drawings.

  The map display device 1 is composed of, for example, a portable device equipped with a computer, for example, a mobile phone, a PDA (Personal Digital Assistant), etc. Each component or function in the map display device 1 described below is For example, it is realized by executing a computer program. The map display device 1 can be used by being mounted on a moving body such as a vehicle, for example. In the following embodiment, a case where the map display device 1 is mounted on a vehicle such as a private car or a taxi will be described as an example.

  FIG. 1 is a functional configuration diagram of the map display device 1. The map display device 1 according to the present embodiment includes a display 3 and a speaker 5. When the map display device 1 is mounted on a vehicle, the map image including the vehicle position at that time is displayed on the display 3. The music is played and output from the speaker 5.

  As shown in the figure, the map display device 1 includes a GPS (Global Positioning System) processing unit 11, a position history data storage unit 13, a map data storage unit 15, a display processing unit 17, and a traveling speed calculation unit 19. A playlist storage unit 21, a music data storage unit 23, a music selection unit 25, a music playback unit 27, a weather data acquisition unit 29, and a driver monitoring unit 31.

  The weather data acquisition unit 29 acquires weather data from a server that provides weather data. The weather data may include temperature, humidity, precipitation probability, etc. in addition to the weather.

  The driver monitoring unit 31 monitors the state of the driver who is driving. For example, a driver's face is photographed with a camera, and signs of the driver's sleep are detected from image movement and eyelid movement.

  The GPS processing unit 11 receives a GPS signal from a GPS satellite (not shown) and detects the current position (vehicle position) of the vehicle on which the map display device 1 is mounted. The current position is indicated by, for example, latitude and longitude. The GPS processing unit 11 acquires the current position at predetermined time intervals. The current position acquired by the GPS processing unit 11 is stored in the position history data storage unit 13 as a vehicle position in association with the time at that time. The current position may be acquired by a method other than GPS. For example, the current position may be detected using a Wi-Fi (Wireless Fidelity) radio wave or a mobile phone radio wave.

  The position history data storage unit 13 stores a vehicle position that changes from time to time in association with each time.

  The map data storage unit 15 stores map data for displaying a map image. The map data may include data such as road features, regional features, or terrain features. The road feature may be, for example, a speed limit, accident frequent routes, an Orbis installation point, or the like. The regional feature may be, for example, an urban area, a suburb, or a rural area. The feature of the topography may be, for example, a coastal area, a mountainous area, or the like.

  The display processing unit 17 displays predetermined information on the display 3. For example, map data is acquired from the map data storage unit 15, and a map image including the current position detected by the GPS processing unit 11 is displayed on the display 3. For example, the map data storage unit 15 acquires map data of an area including the latitude and longitude of the current position from the map data storage unit 15 and causes the display 3 to display a map image based on the acquired map data. At this time, a mark indicating the vehicle position may be displayed on the map image.

  The traveling speed calculation unit 19 acquires data indicating a plurality of vehicle positions from the position history data storage unit 13 and calculates the traveling speed of the vehicle. The travel speed calculation unit 19 is one of travel state detection means.

  The playlist storage unit 21 stores a plurality of playlists (song groups) including one or more songs. The playlists stored in the playlist storage unit 21 are associated with different running states. Alternatively, the playlist stored in the playlist storage unit 21 is associated with the driving state of the driver.

  For example, in this embodiment, the traveling speed of the vehicle is divided into a low speed range (for example, less than 30 km / h), a medium speed range (for example, 30 km / h to less than 70 km), and a high speed range (for example, 70 km / h or more). Is associated with one range (speed range) and stored in the playlist storage unit 21.

  FIG. 2 shows an example of the contents stored in the playlist storage unit 21. For example, in the example shown in the figure, a speed range 211, a playlist name 213, a song name 215, a playback order 216, and a final playback flag 217 are stored in association with each other. The speed region 211 is an aspect of the running state of the vehicle, and is divided into a low speed region, a medium speed region, and a high speed region. The song name 215 includes names of a plurality of songs constituting each playlist. The reproduction order 216 indicates the reproduction order of music pieces in the same playlist. The final reproduction flag 217 is a flag indicating a music piece reproduced last in each playlist.

  As other running conditions, for example, features of roads that are running, regional features, topographic features, weather, temperature, day of the week, time zone, and the like may be used. In other words, a playlist may be stored in the playlist storage unit 21 in association with the characteristics of the road on which the vehicle is traveling, the characteristics of the region, the characteristics of the terrain, the weather, the temperature, the day of the week, and the time zone.

  One playlist stored in the playlist storage unit 21 may be associated with a combination of a plurality of types of running states. For example, one playlist may be associated with the terrain feature “near the coast” and the weather “sunny”.

  Referring to FIG. 1 again, the music data storage unit 23 stores the music data of the music included in the playlist stored in the playlist storage unit 21.

  The music selection unit 25 selects any one playlist from a plurality of playlists (music group) stored in the playlist storage unit 21 according to the detected running state. For example, the music selection unit 25 selects a playlist corresponding to the detected running state. For example, when the music selection unit 25 acquires the travel speed detected by the travel speed calculation unit 19, the music selection unit 25 determines a speed range to which the speed belongs, and stores a playlist associated with the determined speed range in the playlist. Select from section 21.

  When the music selection unit 25 detects a plurality of types of driving conditions, the playlist may be selected with priority given to a driving condition having a higher priority. For example, when the travel speed and the feature of the terrain are detected, if the priority order of the terrain feature is higher than the travel speed, the play associated with the detected terrain feature is given priority over the feature of the terrain. A list may be selected.

  Further, when the music selection unit 25 detects a plurality of types of running states, if there is a playlist associated with the combination of the plurality of types of running states, it may be selected. For example, if the terrain feature of the area you are driving is “near the coast” and the weather is detected as “sunny”, the terrain feature of the region is associated with “near the coast” and the weather is “sunny”. If the playlist is stored in the playlist storage unit 21, the music selection unit 25 may select the playlist.

  The music selection unit 25 may select any one playlist from a plurality of playlists (music group) stored in the playlist storage unit 21 according to the driving state of the driver. For example, when a sign of dozing appears, a corresponding playlist may be selected. The playlist corresponding to the snoozing may include, for example, music that wakes up.

  The music selection unit 25 further selects one music from the selected playlist. For example, the music selection unit 25 sequentially selects a plurality of music included in the music group selected as described above in a predetermined order. The predetermined order may be, for example, the order (fixed) at the time of registration of the playlist, or may be different each time the map display device 1 is activated (variable, shuffle function). That is, while the same playlist is selected, the music reproducing unit 27 sequentially reproduces a plurality of songs included in the music group selected by the music selecting unit 25 in a predetermined order. When all the songs in the playlist have been played back, playback may be repeated after returning to the first music piece (repeat function).

  In the playback order 216 of the playlist storage unit 21, the order at the time of playlist registration is set as an initial value. When the user designates shuffle, a randomly set playback order is registered in the playback order 216.

  The music selection unit 25 sequentially selects music according to the reproduction order 216 and instructs the music reproduction unit 27 to reproduce the selected music. At this time, the music selection unit 25 sets the final reproduction flag 217 for the music that is instructed to be reproduced. If the final playback flag 217 is set for another music piece in the same playlist, it is canceled.

  The music reproduction unit 27 acquires the music data of the music selected by the music selection unit 25 from the music data storage unit 23 and reproduces it. Thereby, the reproduced music is output from the speaker 5.

  The music selection unit 25 may switch the playlist at the following timing, for example. That is, the music selection unit 25 sets the travel speed calculated by the travel speed calculation unit 19 when the reproduction of one music (first music) included in a playlist (first music group) ends. A corresponding playlist (second music group) is selected. Here, when the reproduction of the music ends, for example, it may be at the end of the music, or may be before a predetermined time (for example, 5 seconds, 3 seconds, 1 second) when the music ends. Hereinafter, this switching timing will be described in detail.

  FIG. 3 is an explanatory diagram of playlist switching timing. The figure shows the speed range of the running vehicle and the music being played, with the horizontal axis as time. Here, the playback order in the same playlist is the registration order (initial value).

  In (A), playback of the music is started. At this time, the music selection unit 25 acquires the traveling speed at that time, determines the speed range, and selects the corresponding playlist. In the example shown in the figure, in the case of (A), since it is a low speed region, the music selection unit 25 selects a low speed play list. Further, the music selection unit 25 selects a music from the low-speed playlist according to the order of registration, and the music playback unit 27 plays it (here, the first music AAA). The music selection unit 25 sets a final reproduction flag 217 for the selected music.

  In (B), the traveling speed increases during the reproduction of the music AAA and shifts to the middle speed range. However, it is not interrupted during music playback.

  In (C), the music AAA being played ends. At this time, the playlist to be selected next is determined based on the running speed at the end of the music. In (C), since it is a medium speed region, the music selection unit 25 selects a medium speed region playlist. As in this case, when the playlist (first music group) selected immediately before is different from the newly selected playlist (second music group), the music selection unit 25 selects a new one. Select one of the songs included in the played playlist. That is, the music selection unit 25 selects the first music DDD from the mid-speed range playlist. The music playback unit 27 starts playback from the beginning of the selected music. If the selection of the next playlist is not completed even after the predetermined interval time between songs, the selection of the next playlist is completed without playing the next song, and the next song is determined. You may wait until you do.

  In (D), the music DDD being played ends. At this time, the music selection unit 25 determines a playlist to be selected next based on the running speed at the end of the music. Since (D) is in the middle speed range, the music selection unit 25 continues to select a play list in the middle speed range. When the playlist (first music group) selected immediately before and the newly selected playlist (second music group) are the same as in this case, the music selection unit 25 determines whether or not In this order, the music (second music) defined as the next of the music (first music) that ended immediately before is selected. That is, the music selection unit 25 selects the music (here, the music EEE) that is the next to the music (here, the music DDD) whose reproduction order 216 has ended immediately before. The music playback unit 27 starts playback from the beginning of the selected music.

  In (E), the music EEE being played ends. At this time, the music selection unit 25 determines a playlist to be selected next based on the running speed at the end of the music. In (D), since the traveling speed is in the low speed range, the low speed playlist is selected again. As in this case, when the newly selected playlist (second music group) is the same as the previously selected playlist (first music group), the music selection unit 25 determines whether or not In this order, the music (second music) determined to be next to the music (first music) reproduced last is selected. That is, the music selection unit 25 selects the music (music BBB) next to the music (music AAA) in which the reproduction order 216 has the final reproduction flag 217 set. Thereby, even when the playlist selected in accordance with the speed change is switched one after another, the music is sequentially selected and reproduced according to the reproduction order 216 when one playlist is viewed.

  FIG. 4 is a flowchart showing a music reproduction processing procedure in the map display device 1 having the above-described configuration. The process according to this flowchart is performed in parallel with the process for displaying the map image. For example, when the map image display process is started or when the start of music reproduction is instructed, the process of FIG. 4 is started.

  First, the music selection unit 25 acquires the traveling speed of the vehicle calculated by the traveling speed calculation unit 19 (S10). The music selection unit 25 determines whether the traveling speed of the vehicle at this time is a low speed range, a medium speed range, or a high speed range (S12). The music selection unit 25 selects the low speed range playlist in the playlist storage unit 21 if the traveling speed at this time is the low speed range (S14), and if the traveling speed is medium speed range, the medium selection range play of the playlist storage unit 21 is performed. A list is selected (S16), and if it is a high-speed area, a high-speed area playlist in the playlist storage unit 21 is selected (S18).

  The music selection unit 25 detects music for which the final playback flag 217 of the playlist selected in the above processing is set (S20), and the playback order 216 is next to the music for which the final playback flag 217 is set. Are selected as the music to be played (S22).

  Next, the music selection unit 25 updates the final reproduction flag 217 from the music detected in step S20 to the music selected in step S22 (S24). Then, the music selection unit 25 instructs the music playback unit 27 to start playback of the music selected in step S22 (S26). Thereby, the music in a play list according to speed is produced | generated.

  The music selection unit 25 monitors whether or not the music being reproduced has been completed (S28), and once the reproduction is completed, the process is performed again from step S10.

  Thereby, when the map display apparatus 1 is performing map display, the music according to a driving | running | working state can be provided as BGM. Furthermore, the playlist can be switched at the timing when the music ends. Within the same playlist, songs are played sequentially in a predetermined order.

  The above-described embodiments of the present invention are examples for explaining the present invention, and are not intended to limit the scope of the present invention only to those embodiments. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

  For example, the map display device 1 may have a navigation function, and may generate and output music while performing navigation.

  Alternatively, a playlist when the speed limit is exceeded may be stored in 21 so that when the speed limit is detected, the playlist is switched to that playlist. The playlist when the speed limit is exceeded includes, for example, music that can be calmed, and may aim to reduce the speed naturally, or music that makes the driver feel uncomfortable (sound effect) You may aim for an effect that makes it difficult to speed up.

DESCRIPTION OF SYMBOLS 1 Map display apparatus 3 Display 5 Speaker 11 GPS processing part 13 Location history data storage part 15 Map data storage part 17 Display processing part 19 Running speed calculation part 21 Playlist storage part 23 Music data storage part 25 Music selection part 27 Music reproduction part 29 Weather data acquisition unit

Claims (7)

A map image display device that can be mounted on a moving body,
Current position detecting means for detecting a current position of the moving body;
Traveling state detection means for detecting the traveling state of the moving body;
Map data storage means for storing map data for displaying a map image;
Map display means for acquiring map data from the map data storage means and displaying a map image including a current position detected by the current position detection means on a display;
Music storage means for storing a plurality of music groups including one or more music;
Selection means for selecting any one music group from a plurality of music groups stored in the music storage means according to the running state detected by the running state detection means;
A map display device comprising: a playback unit that sequentially plays back a plurality of songs included in the song group selected by the selection unit in a predetermined order. The traveling state detecting means detects a traveling speed of the moving body,
The plurality of music groups of the music storage means are associated with ranges of different running speeds in advance,
The map display device according to claim 1, wherein the selection unit selects a playlist corresponding to the traveling speed detected by the traveling state detection unit. The selecting means selects a second music group corresponding to the running state detected by the running state detecting means when the reproducing means finishes playing the first music included in the first music group. And
If the first music group is different from the second music group, the playback means starts playing the music included in the second music group after the playback of the first music is finished. The map display device according to claim 1 or 2.   When the first music group and the second music group are the same, the reproduction means performs the next of the first music in the predetermined order after the reproduction of the first music is completed. The map display device according to claim 3, wherein reproduction of the second music set in order is started. The selecting means is a third music group corresponding to the running state detected by the running state detecting means when the playing means finishes playing any one of the songs included in the second music group. Select
When the third music group and the first music group are the same, the reproduction means starts reproduction of the second music determined as the next order of the first music in the predetermined order. The map display device according to claim 3. Map display comprising map data storage means for storing map data for displaying a map image, and music storage means for storing a plurality of music groups including one or more music, which can be mounted on a mobile body A method of playing music performed by an apparatus,
A current position detecting step for detecting a current position of the moving body;
A traveling state detecting step for detecting a traveling state of the moving body;
A map display step of acquiring map data from the map data storage means and displaying a map image including the detected current position on a display;
A selection step of selecting any one music group from a plurality of music groups stored in the music storage means according to the detected running state;
And a playback step of sequentially playing back songs included in the selected music group. Map display comprising map data storage means for storing map data for displaying a map image, and music storage means for storing a plurality of music groups including one or more music, which can be mounted on a mobile body A computer program for a device,
In the map image display device,
A current position detecting step for detecting a current position of the moving body;
A traveling state detecting step for detecting a traveling state of the moving body;
A map display step of acquiring map data from the map data storage means and displaying a map image including the detected current position on a display;
A selection step of selecting any one music group from a plurality of music groups stored in the music storage means according to the detected running state;
A computer program for a map display device that executes a reproduction step of sequentially reproducing music included in the selected music group.

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