JP5003295B2 - Music playback device, music playback system, music playback method, and music playback program - Google Patents

Description

  The present invention relates to a music playback device, a music playback system, a music playback method, and a music playback program that allow a plurality of users to easily enjoy favorite music.

  For example, in order to enjoy music using a music playback device mounted on a vehicle or the like, a music data can be stored in a storage medium such as a hard disk and a favorite song can be selected and played back from the music data. Navigation systems and car audio systems are known. In addition, portable music playback devices such as a memory player that can play back music data stored in a flash memory, a hard disk, and the like, and a mobile phone with a music playback function are becoming widespread. Further, a technique for transmitting music data stored in a portable music playback device to a car navigation system or a car audio system by wire or wirelessly and playing music with a vehicle-mounted speaker has been put into practical use.

  Flash memories and hard disks installed in recent car navigation systems and car audio systems have become large in capacity and can store a large amount of music data. The user can enjoy music in the car by selecting a song to be listened to from the enormous music data. If no passenger is present, the owner of the vehicle knows what music data is stored in the music playback device, and the music playback device has a preference of the owner of the vehicle. Since a lot of music data of songs is stored, it is not so difficult for the vehicle owner to select a song that he wants to listen to. On the other hand, when a passenger is present, it is necessary to select a song reflecting the passenger's preference so that not only the owner of the vehicle but also the passenger can enjoy the music in the vehicle. However, the passenger does not know what kind of music data is stored in the music playback device, and the music playback device does not store much music data of the favorite song of the passenger, so it is enormous. For example, it is necessary to perform an operation of finding a song that suits the user's taste by repeating a scroll operation for listing music attributes (for example, artist name, genre name, etc.) for various music data. In this way, the operation of selecting a song that reflects the passenger's preference is very complicated. There is a problem that the user does not select a song because of a complicated operation for finding a favorite song, and as a result, for example, a passenger in the front passenger seat is prevented from enjoying music in the car.

  Passengers other than the vehicle owner can connect their portable music playback device with the in-vehicle music playback device as a method of playing their favorite songs with the on-board music playback device, It is conceivable that the music data stored in the portable music playback device is transmitted to the in-vehicle music playback device and played back by the in-vehicle music playback device. However, in that case, the same problem that the favorite music other than the passenger who owns the portable music playback device cannot be played back occurs. In other words, it is very time-consuming and difficult to play a common song that is preferred by a plurality of users in the same space.

  Conventionally, in a field such as SNS (Social Network Service), a user's favorite song is uploaded to a server and published to find a user with a similar musical preference, or music data with a similar preference is retrieved from the server. Downloading services are known. With this technology, it is possible to know the music preferred by other users, but it is not envisaged that this technology can be applied to play music that is common to multiple users in the same space.

In addition to this, for example, Patent Document 1 discloses a music playback device that allows a plurality of users to simultaneously play music data stored on a server using a chat system provided on the Internet. .
However, the music playback device disclosed in Patent Document 1 is based on the premise that the client users connected to the server are originally only users who have similar musical tastes. There is no control to select and play a song common to a plurality of users in the same space.

Also, in Patent Document 2, a representative song set by a user and serving as a basis for search is compared with a plurality of songs to be searched based on similarity, and a song is selected based on the comparison result. A music search device for reproduction is disclosed. However, this music search device can select and play a song similar to the favorite song from the songs stored in the music database, but it exists in the same space unless a cumbersome operation of setting a representative song is performed. There is a problem that it is not possible to reproduce a common song that is preferred by a plurality of users.
JP 2001-184292 A JP 2004-171096 A

  SUMMARY OF THE INVENTION In view of the above circumstances, the present invention does not require a troublesome operation, and a music playback device, a music playback system, a music playback method, and a music playback program that can play a common song of a plurality of users in the same space. The purpose is to provide.

  The first music playback system of the present invention that achieves the above object provides one or a plurality of pieces of reproduction song information representing attributes of one or a plurality of users that have been reproduced in the past from an external device that records the reproduction song information. A reproduction song information receiving unit that receives reproduction history information together with a user ID, and recording the reproduction song information received by the reproduction song information receiving unit in association with the user ID, thereby obtaining reproduction history information for each user. A reproduction history collection device including a reproduction history storage unit to store, a reproduction history transmission unit that receives a reproduction history information transmission request specifying the user and transmits the reproduction history information of the user, and music data representing a song A music data storage unit that is stored; a music playback unit that plays back music based on the music data stored in the music data storage unit; and music data that is stored in the music data storage unit. A song information storage unit that stores stored song information that represents the attributes of the song to be played, a reproduction song information transmission unit that transmits reproduction song information that represents the attributes of the song reproduced by the music reproduction unit, and the reproduction history collection device The playback history receiving unit that receives the playback history information transmitted from the storage unit, the stored music information stored in the music information storage unit and the playback history information received by the playback history receiving unit are compared, and the music In the data storage unit, a song is selected under a predetermined condition from the songs stored in the music data, a playlist creating unit that creates a playlist composed of the selected song, and the music playback unit, And a music playback device including a music playback control unit that plays back music according to the playlist created by the playlist creation unit.

  According to the first music playback system of the present invention, a song is played according to a playlist created based on the stored song information stored in the music playback device and the playback history information received from the playback history collection device. Therefore, it is possible to realize a music playback system in which a plurality of users existing in the same space including the owner of the music playback device can play a favorite common song without performing troublesome operations. it can.

  Here, the first music playback system of the present invention is a portable terminal that mediates communication between the music playback device and the playback history collection device, and receives the playback song information from the music playback device. A reproduction tune information transfer unit that transmits to the reproduction history collection device, a reproduction history transmission request unit that makes a reproduction history transmission request specifying a user to the reproduction history collection device, and the reproduction history information from the reproduction history collection device. You may further comprise the portable terminal provided with the reproduction history transfer part which receives and transmits to the said music reproduction apparatus.

  When the first music playback system of the present invention is configured as described above, transmission history information specifying a user is transmitted and received between the music playback device and the playback history collection device by providing the portable terminal. Therefore, it is possible to provide an easy-to-handle music playback system.

  The second music reproduction system of the present invention that achieves the above object includes a reproduction music information receiving unit that receives reproduction music information representing the attributes of the music reproduced in the past of each user together with a user ID, and the reproduction A playback history storage unit that stores playback history information for each user by recording the playback song information received by the song information receiving unit in association with the user ID, and a user who plays one song is the other song A preference similarity information storage unit in which preference similarity information indicating a preference similarity indicating that there is a high possibility of playing a song is stored in advance, and a stored song information reception unit that receives the stored song information transmitted from the music playback device And the user's reproduction history information stored in the reproduction history storage unit and the preference similarity information stored in the preference similarity information storage unit. In addition, a song is selected from songs stored in the stored song information received by the stored song information receiving unit under a predetermined condition, and is composed of songs that match the selected user's preference. A reproduction history collection device comprising a playlist generation unit for generating a list and a playlist transmission unit for transmitting the playlist generated by the playlist generation unit, and a music data storage for storing music data representing a song A music reproduction unit that reproduces a song based on the music data stored in the music data storage unit, and a reproduction song information transmission unit that transmits reproduction song information indicating the attribute of the song reproduced by the music reproduction unit; A song information storage unit that stores stored song information that represents the attributes of the song represented by the music data stored in the music data storage unit, and a stored song information that is stored in the song information storage unit Do A music delivery information transmission unit, a playlist reception unit that receives a playlist transmitted from the reproduction history collection device, and a song that causes the music reproduction unit to reproduce a song according to the playlist received by the playlist reception unit. And a music playback device including a playback control unit.

  According to the second music playback system of the present invention, the stored music information stored in the music playback device is transmitted to the playback history collection device, and the playlist created by the playback history collection device is received by the music playback device. Since the music can be reproduced in accordance with the playlist, the processing load for creating the playlist in the music playback device can be reduced, and a plurality of the music playback devices existing in the same space including the owner of the music playback device It is possible to realize a music playback system that allows the user to play a favorite common song without performing a cumbersome operation.

  Here, the second music playback system of the present invention is a portable terminal that mediates communication between the music playback device and the playback history collection device, and receives the playback song information from the music playback device. A playback song information transfer unit that transmits to the playback history collection device, a stored song information transfer unit that receives the stored song information from the music playback device and transmits the stored song information to the playback history collection device, and the playback history collection device. A portable terminal comprising: a playlist transmission requesting unit for requesting transmission of a playlist that specifies a playlist; and a playlist transfer unit for receiving a playlist from the reproduction history collection device and transmitting the playlist to the music playback device. It may be.

  When the second music playback system of the present invention is configured as described above, the mobile terminal is provided so that a playlist specifying a user can be transmitted and received between the music playback device and the playback history collection device. Therefore, the music playback system can be easily handled.

  The third music playback system of the present invention that achieves the above object includes a second music data storage unit storing music data representing a song, and music data stored in the second music data storage unit. A music playback unit that plays back a song based on the music, a playback song list storage unit that stores a playback song list that represents the attributes of the played song, and a playback song list storage unit that is stored toward the music playback device. A portable music terminal having a reproduction song list transmission unit for transmitting a reproduction song list, a first music data storage unit for storing music data representing the song, and a first music data storage unit stored in the first music data storage unit A music playback unit that plays back a song based on music data, a song information storage unit that stores stored song information that represents the attributes of the song represented by the music data stored in the first music data storage unit, Sent from the mobile device The music data storage unit is configured to compare the reproduction music list reception unit for receiving the reproduction music list received, the stored music information stored in the music information storage unit with the reproduction music list received by the reproduction music list reception unit, and store the music data A playlist creation unit for creating a playlist composed of songs selected from songs whose music data is stored in the unit, and a song according to the playlist created by the playlist creation unit in the music playback unit. And a music playback device having a music playback control unit for playing back the music.

  According to the third music playback system of the present invention, by providing the music playback device and the mobile terminal, a playback song list representing the attributes of songs played on the mobile terminal is transmitted to the music playback device, Since the playback device can play back the music based on the playback music list, the owner of the music playback device and the user of the portable terminal can play back the common favorite song without performing troublesome operations. It is possible to realize a music playback system that can be used.

  The first music reproducing apparatus of the present invention that achieves the above object reproduces a music data storage unit storing music data representing a song, and a song based on the music data stored in the music data storage unit. In a music playback device comprising a music playback unit, a song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit, A reproduction history receiving unit that receives one or a plurality of reproduction history information together with a user ID from an external device that records reproduction history information representing the attributes of the recorded music, and a storage stored in the song information storage unit. The music information is compared with the reproduction history information received by the reproduction history receiving unit, and a song is selected under a predetermined condition from among the music data stored in the music data storage unit. Composed of songs A play list creating unit for creating a playlist that, in the music reproducing unit, characterized by comprising a music reproduction control unit to play songs according to the playlist created by the playlist creation section.

  According to the first music playback device of the present invention, the playback history information is received from an external device as information of a favorite song of a plurality of users existing in the same space, and the stored music stored in the music playback device. Since a song can be played according to a playlist created under specified conditions based on the information and the received playback history information, troublesome operations are performed on songs other than songs stored in this music playback device. Thus, it is possible to realize a music playback device that can play back the music.

  The second music reproducing apparatus of the present invention that achieves the above object reproduces a music data storage unit storing music data representing a song, and a song based on the music data stored in the music data storage unit. A music playback device comprising a music playback unit, a song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit, and the song information storage Music data is stored in the music data storage unit from a stored music information transmission unit that transmits stored music information stored in the unit and an external device that receives the stored music information and creates a playlist. A playlist receiving unit that receives a playlist composed of songs selected from the songs, and causing the music playback unit to play back the songs according to the playlist received by the playlist receiving unit. Characterized by comprising a reproduction control unit.

  According to the second music playback device of the present invention, stored music information stored in the music playback device is transmitted to an external device, and a playlist created by the external device under a predetermined condition is transmitted to the music. Since it is received by the playback device and the music playback device plays back the music according to the received playlist, the processing load of creating the playlist in the music playback device can be reduced and the owner of the music playback device is included. It is possible to realize a music reproducing apparatus that allows a plurality of users existing in the same space to reproduce a favorite common song without performing troublesome operations.

  Here, the first music playback device according to the present invention or the second music playback device according to the present invention further includes a playback song information transmission unit for transmitting playback song information indicating the attribute of the song played back by the music playback unit. It may be provided.

  When the first music playback device of the present invention or the second music playback device of the present invention is configured as described above, the playback music information indicating the attributes of the music played back by the music playback unit is transferred to an external device. Since it is transmitted and received by an external device, when the owner of this music playback device tries to enjoy music on the music playback device of another person, the music playback device of the other person can also play his / her favorite song. It can be played back.

  In addition, the music playback method of the present invention that achieves the above object is a music playback method in which a music playback device plays back music, comprising the steps of storing music data representing a song in advance and the stored music data. One or a plurality of pieces of reproduction history information are stored in a user from an external device that records in advance the piece of music information that represents the attribute of the song that is represented and the reproduction history information that represents the attribute of the song that has been reproduced in the past The step of receiving together with the ID, the song information and the received reproduction history information are compared, a song is selected from the songs in the stored music data under a predetermined condition, and the selected song And a step of reproducing a song for reproducing a song according to the created playlist based on the music data.

  According to the music playback method of the present invention, a song can be played according to a playlist created based on the song information stored in the music playback device and the playback history information received from an external device. A plurality of users existing in the same space including the owner of the music playback device can play back a favorite common song without performing troublesome operations.

  The music playback program of the present invention that achieves the above object is a music playback program executed in the music playback device, and a procedure for storing music data representing a song in the music playback device, One or a plurality of reproduction history information from an external device that records the procedure for storing the song information representing the attribute of the song represented by the music data and the reproduction history information representing the attribute of the song played in the past Is received together with the user ID, and the song information is compared with the received reproduction history information, and a song is selected from the stored songs of the music data under a predetermined condition. A music playback program for executing a procedure for creating a playlist composed of the created songs and a procedure for playing back songs based on the music data according to the created playlist. A gram.

  According to the music playback program of the present invention, the music can be played according to the playlist created based on the music information stored in the music playback device and the playback history information received from the external device. It is possible to realize a music reproduction program that allows a plurality of users existing in the same space including the owner of the music reproduction device to reproduce a favorite common song without performing troublesome operations.

  As described above, according to the present invention, when playing a song reflecting the preferences of a plurality of users existing in the same space, a scroll operation for listing the attributes of the song for a large amount of music data is repeated. To realize a music playback device, music playback system, music playback method, and music playback program capable of automatically playing back a common song of preference of a plurality of users existing in the same space without performing troublesome operations. it can.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the music playback system according to the first embodiment of the present invention.

  The music playback system 1 of the first embodiment corresponds to an embodiment of the first music playback system of the present invention. The music playback device 10 of the first embodiment corresponds to an embodiment of the first music playback device of the present invention.

  The music playback system 1 includes an in-vehicle music playback device 10 mounted on a vehicle, a mobile terminal 90 connected to the music playback device 10 wirelessly, and a playback history collection connected to the mobile terminal 90 wirelessly. The apparatus 11 is provided. Specifically, the playback history collection device 11 is configured as a server deployed on a network, the mobile terminal 90 is configured as a client thereof, and the music playback device 10 and the mobile terminal 90 are Bluetooth (BlueTooth). It is connected.

  The music playback device 10 can use this music playback device 10 alone and play music based on the music data stored in the music playback device 10 to enjoy music. By connecting the portable terminal 90 and the playback history collection device 11 to the music playback system 1, it becomes possible to play back songs reflecting the preferences of many users other than the owner of the vehicle. It can be set as the system which provides a more comfortable music environment for the passenger of a vehicle.

  As shown in FIG. 1, the music playback device 10 includes a music data storage unit 102, a music playback unit 104, a song information storage unit 103, a playback song information transmission unit 105, a playback history reception unit 107, A list creation unit 108, a narrow area communication unit 106, and a control unit 101 are provided.

  The music data storage unit 102 stores music data representing a song, and the music playback unit 104 plays a song based on the music data stored in the music data storage unit 102 and stores song information. The unit 103 stores stored music information indicating the attributes of the music represented by the music data stored in the music data storage unit 102, and the playback music information transmitting unit 105 plays back the music by the music playback unit 104. The reproduction history information representing the attribute of the reproduced music is transmitted, and the reproduction history receiving unit 107 receives the user ID (user identification information) and the reproduction history information transmitted from the reproduction history collection device 11. The playlist creation unit 110 compares the stored song information stored in the song information storage unit 103 with the user ID received by the playback history receiving unit 107 and the playback history information. The music data storage unit 102 selects a song from songs stored in the music data under a predetermined condition, and creates a playlist composed of the selected song. The narrow area communication unit 106 Communication with the portable terminal 90 is performed. The predetermined condition is a condition for creating a playlist according to the user and the number of times the song is played so that all users can listen to their favorite song fairly.

  The control unit 101 controls the operation of the entire apparatus. Among the control functions, the control unit 101 includes a function for causing the music reproduction unit 104 to reproduce a song according to the playlist created by the playlist creation unit 110. Therefore, the control unit 101 in the present embodiment corresponds to an example of a music reproduction control unit according to the present invention.

  The reproduction history collection device 11 includes a reproduction song information reception unit 114, a reproduction history storage unit 113, a reproduction history transmission unit 115, a user information storage unit 112, and a wide area communication unit 116 that communicates with the mobile terminal 90, And a control unit 111 that controls the entire apparatus.

  The playback song information receiving unit 114 receives playback song information representing the attributes of songs played in the past of each user, and the playback history storage unit 113 receives the playback song information received by the playback song information receiving unit 114. The reproduction history information for each user is stored by recording the information in association with the user, and the reproduction history transmitting unit 115 receives the transmission request for the reproduction history information specifying the user and sends the communication unit 109 to the communication history 109. The reproduction history information of the user is transmitted via the via.

  As the mobile terminal 90, for example, a mobile music player, a mobile phone having a music playback function, a PHS, or the like can be used. The mobile terminal 90 includes, as constituent elements related to the present embodiment, personal information storage unit 902 storing one or more user IDs, and information on the reproduced music in response to a request from the music playback device 1. Communication between the reproduction history storage user selection unit 904 for selecting a user to be stored as reproduction history information, a listening user selection unit 903 for selecting a listening user who listens to music from personal information, and the reproduction history collection device 11 A wide-area communication unit 905 that performs communication, a narrow-area communication unit 906 that performs communication with the music playback device 1, and a control unit 901 that controls the operation of the entire apparatus are provided.

  In this embodiment, a Bluetooth communication device is used as the narrow area communication unit 106 and the narrow area communication unit 906. These narrow-area communication units are not limited to Bluetooth. For example, a wireless LAN (Local Area Network) based on IEEE (The Institute of Electrical and Electronics Engineers, Inc.) 802.11a / b / g standard is used. It may be.

  In this embodiment, Internet-type communication devices are used as the wide area communication unit 116 and the wide area communication unit 905.

  Next, the operation of the music playback system 1 will be described.

  The operation of the music playback system 1 has two phases: a playback history storage phase for storing playback history information and a playlist creation phase for creating a playlist. First, the reproduction history accumulation phase will be described.

  2 and 3 are flowcharts showing an example of a reproduction history accumulation process in the music reproduction system of the first embodiment.

  The music playback system 10 and the portable terminal 90 are connected by Bluetooth and operate as one body.

  When it is detected that the music playback system 10 and the portable terminal 90 are connected to each other via Bluetooth (step S101), and music is played back by the music playback unit 104 of the music playback device 10 (step S102), playback is performed. In order to specify which user's reproduction history information is stored as the reproduction history information, the reproduction history accumulation user selection unit 904 of the portable terminal 90 is requested to select and input the user (step S103).

  The personal information storage unit 902 of the portable terminal 90 stores, as personal information, an address on the network of the playback history collection device 11 and a user ID that uniquely identifies the user, and is selected by the playback history storage user selection unit 904. The reproduction history storage unit 113 associated with the user is requested to store the reproduction history information as reproduction history information (step S104). Then, every time the next song is played, a request is made to store it as playback history information (step S105). Usually, it is considered that the owner of the music playback device 10 and the owner of the mobile terminal 90 are often the same, so that the playback history storage user selection unit 904 automatically selects the owner of the mobile terminal 90. It may be. When connecting to the playback history collection device 11, a password may be requested for security reasons.

  As shown in FIG. 3, the playback history collection device 11 receives the information of the music played by the playback music information receiving unit 304 (step S106), refers to the user information storage unit 302, and plays back the music corresponding to the user. Information of the reproduced music is stored in the history storage unit 303 (step S107).

  The playback history collection device 11 is not limited to the music playback device 10 and may be configured to receive music information played back from a mobile phone or a PC that can be connected to a network and has a music playback function. .

  Next, the playlist creation phase will be described.

  4 and 5 are flowcharts showing an example of playlist creation processing in the music playback system of the first embodiment.

  The music playback device 10 and the portable terminal 90 are connected by Bluetooth technology or the like and operate as a unit, as in the playback history information accumulation phase. When it is detected that the narrow area communication unit 106 of the music playback device 10 and the narrow area communication unit 906 of the mobile terminal 90 are connected (step S201), the listening user selection unit 903 of the mobile terminal 90 performs the personal information storage unit. A request is made to select a listening user for listening to music from the personal information stored in 902 (step S202).

  The wide area communication unit 205 connects to the playback history collection device 11 associated with the selected listening user, and requests the listening user to acquire playback history information on another music playback device (step S203). . The listening user selection unit 903 may automatically select the owner of the mobile terminal 90 on the assumption that the owner of the mobile terminal 90 connected to the music playback device 10 is the passenger himself / herself.

  As shown in FIG. 5, when the reproduction history collection device 11 receives a reproduction history information acquisition request (step S207), the reproduction history collection device 11 refers to the user information storage unit 112 and the reproduction history information of the user from the reproduction history storage unit 113. Is transmitted to the music playback device 10 via the portable terminal 90 (step S208).

  The music playback device 10 receives the playback history information sent from the playback history collection device 11 by the playback history receiving unit 107 (step S204). The playlist creation unit 108 compares the received reproduction history information with the stored song information stored in the song information storage unit 103, and creates a playlist composed of songs with matching attributes (step S205). . The control unit 101 causes the music playback unit 104 to play back a song according to the playlist created by the playlist creation unit 108 (step S206).

  Next, a specific example of playlist creation in the first embodiment will be described.

  FIG. 6 is a diagram showing an example of reproduction history information in the music reproduction system according to the first embodiment of the present invention.

  FIG. 6 shows an example of the playback history information 81 received by the playback history receiving unit 107 (see FIG. 1). As shown in the figure, this playback history information 81 includes playback history information indicating the attributes of songs that have been played in the past, that is, song attributes such as song name 81a, artist 81b, and genre 81c, the number of times of playback 81d, and the final playback. It consists of items such as day 81e.

  FIG. 7 is a diagram showing an example of stored song information in the music playback system according to the first embodiment of the present invention.

  FIG. 7 shows an example of stored music information 82 indicating the attributes of music stored in the music information storage unit 103 (see FIG. 1). As shown in FIG. 7, the stored song information 82 includes song attributes such as song name 82a, artist 82b, and genre 82c, and a storage location 82d on the hard disk of music data stored in the music data storage unit 102. Consists of items.

  FIG. 8 is a diagram illustrating an example of a playlist in the music playback system according to the first embodiment of this invention.

  FIG. 8 shows a playlist 83 created by the playlist creation unit 108 (see FIG. 1). As shown in FIG. 8, the playlist 83 includes items such as a song name 83a, an artist 83b, and a genre 83c.

  In the present embodiment, the playlist creation unit 108 (see FIG. 1) includes the reproduction history information 81 (see FIG. 6) received by the reproduction history receiving unit 107 from the portable terminal 90 (see FIG. 1), and the song information storage unit. The stored song information 82 (see FIG. 7) stored in 103 is compared to create a playlist 83 (see FIG. 8) composed of songs with matching attributes.

  The process of creating the playlist 83 from the reproduction history information 81 shown in FIG. 6 and the stored music information 82 shown in FIG. 7 will be described below.

  First, when a record having an attribute that matches the attribute (song name: “Yaya”, artist: “Beatles”, genre: “Rock (Western)”) of the first record 81_1 of the reproduction history information 81 (see FIG. 6) is searched. Since the second record 82_2 (song name: “Yaya”, artist: “The Beatles”, genre: “Rock (Western)”) in the stored song information 82 (see FIG. 7) is found, this record 82_2 is recorded in the playlist. 83 first records 83_1 (see FIG. 8).

  Next, a record having an attribute that matches the attribute (song name: “Yesterday”, artist: “Beatles”, genre: “Rock (Western)”) of the second record 81_2 of the reproduction history information 81 (see FIG. 6) is stored. When searching from the song information 82 (see FIG. 7), there is no record in the stored song information 82 that matches the above three attributes, but the record 82_3 (song name: “Jack”, artist: “ Stones ”, genre:“ Rock (Western) ”) is found, and this record 82_3 is set as the second record 83_2 of the playlist 83 (see FIG. 8).

  Next, a record having an attribute matching the attributes (song name: “Angi”, artist: “Stones”, genre: “Rock (Western)”) of the third record 81_3 of the reproduction history information 81 (see FIG. 6) is stored. When searching from the song information 82 (see FIG. 7), there is a fourth record 82_4 in the stored song information 82, so this record 82_4 is taken as the third record 83_3 (see FIG. 8) of the playlist 83. .

  Next, a record having attributes matching the attributes (song name: “Nyima”, artist: “Coltrane”, genre: “Jazz”) of the fourth record 81_4 of the reproduction history information 81 (see FIG. 6) is stored. When searching from (see FIG. 7), there is no record that matches the above three attributes in the stored song information 82, but the record 82_5 (song name: “blue”, artist: “miles”) that matches the genre, Genre: “Jazz”) is found, and this record 82_5 is set as the fourth record 83_4 (see FIG. 8) of the playlist 83.

  Thus, the playlist 83 is created when the attributes of the three items of the song name, artist, and genre are all or any one of the attributes matches. When there are many songs with matching attributes, a song with a large number of matching attributes may be prioritized and arranged in front of the playlist 83. For example, the music title, the artist, and the genre may be arranged in the order of music that matches all the attributes, music that matches the artist, music that matches the genre, and music that matches only the genre. If the number of matching attributes is the same, give priority to the song with the highest number of playbacks in the playback history information or the song with the latest playback date that is newer, and arrange them higher in the playlist 83. May be.

  In the present embodiment, an example is adopted in which three items of song name, artist, and genre are adopted as attributes. However, the attribute referred to in the present invention is not limited to the three items of song name, artist, and genre. Attributes such as albums may be used.

  The control unit 101 of the music playback device 10 causes the music playback unit 104 to play back a song according to the playlist 83 (see FIG. 8) created as described above. Specifically, for example, by providing a display device that displays a playlist on the music playback device 10 and selection means for selecting a specific song from the displayed playlist, the user's favorite music Can be enjoyed easily.

  As described above, in the music playback system according to the present embodiment, information on songs played by other users than the owner of the music playback device is acquired from the playback history collection device on the network, and is stored in the music playback device. The stored songs are searched, a playlist composed of songs with matching attributes is created, and the songs are reproduced according to the playlist, so that a plurality of users' favorite songs can be reproduced.

  Thus, according to the first music playback system 1, according to the playlist created based on the stored music information stored in the music playback device 10 and the playback history information received from the playback history collection device 11. Since the music can be reproduced, a plurality of users existing in the same space including the owner of the music reproducing device 10 can reproduce the favorite common music without performing troublesome operations.

  Next, a second embodiment of the present invention will be described.

  FIG. 9 is a block diagram showing the configuration of the music playback system according to the second embodiment of the present invention.

  The music playback system according to the second embodiment corresponds to an embodiment of the second music playback system according to the present invention. The music playback device 20 of the second embodiment corresponds to an embodiment of the second music playback device of the present invention.

  The music playback system 2 includes a vehicle-mounted music playback device 20 mounted on a vehicle, a playback history collection device 21 connected to the music playback device 20 wirelessly or by wire, and a portable terminal 90. It has become. Specifically, the playback history collection device 21 is configured as a server deployed on a network, the mobile terminal 90 is configured as a client thereof, and the music playback device 20 and the mobile terminal 90 are connected via Bluetooth. Yes.

  The music playback device 20 can use the music playback device 20 alone and play music based on the music data stored in the music playback device 20 to enjoy music. 20, by configuring the music playback system 2 by combining the mobile terminal 90 and the playback history collection device 21, it becomes possible to play back songs reflecting the preferences of many users other than the owner of this vehicle, It is possible to provide a more comfortable music environment for passengers of this vehicle.

  As in the first embodiment, the music playback system 2 includes an in-vehicle music playback device 20, a portable terminal 90 having a communication function, and a playback history collection device 21, and the music playback system 2 The music playback system 1 according to the first embodiment is configured so that the playlist creation performed by the music playback device is performed by the playback history collection device. That is, the music playback device 20 transmits the stored stored music information to the playback history storage device 21 via the portable terminal 90, and receives and plays the playlist generated by the playback history storage device 21. It has become.

  Of the various devices included in the music playback system 2 of the second embodiment, those similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  As shown in FIG. 9, the music playback device 20 includes a music data storage unit 102, a music playback unit 104, a song information storage unit 103, and playback song information similar to those of the music playback device 1 of the first embodiment. In addition to the transmission unit 105, the narrow area communication unit 106, and the control unit 101, the stored music information stored in the music information storage unit 103 is transmitted to the reproduction history collection device 21 via the portable terminal 90. A stored music information transmission unit 209 and a playlist reception unit 208 that receives the playlist generated by the reproduction history collection device 21 via the portable terminal 90 are provided.

  The reproduction history collection device 21 connected to the music reproduction device 20 includes a reproduction history storage unit 113, a user information storage unit 112, and a reproduction song information reception unit 114 similar to the reproduction history collection device 11 of the first embodiment. In addition to the wide area communication unit 116 and the control unit 111, a stored music information receiving unit 216 that receives stored music information stored in the music playback device 20, and a user who has played one music The preference similarity information generating unit 210 that generates preference similarity information that indicates the similarity of the preference that the user is likely to reproduce the preference similarity information storage unit 219 that stores the preference similarity information generated by the preference similarity information generation unit 210 In response to the transmission request for the playlist specifying the user, the user's reproduction history information stored in the reproduction history storage unit 113 and the preference stored in the preference similarity information storage unit 219 A playlist for generating a playlist composed of songs that match the user's preference selected from the songs represented by the stored song information received by the stored song information receiving unit 216 with reference to the similar information A generation unit 217 and a playlist transmission unit 218 that transmits the playlist generated by the playlist generation unit 217 to the music playback device 20 are provided.

  In this embodiment, a Bluetooth communication device is used as the narrow area communication unit 106 and the narrow area communication unit 906. These narrow area communication units are not limited to Bluetooth, and may be, for example, a wireless LAN system based on the IEEE 802.11a / b / g standard.

  In this embodiment, Internet-type communication devices are used as the wide area communication unit 116 and the wide area communication unit 905.

  Next, the operation of this music playback system 2 will be described.

  The operation of the music playback system 2 has two phases: a playback history storage phase for storing playback history information and a playlist creation phase for creating a playlist. Since the reproduction history accumulation phase is the same as that in the first embodiment, description thereof will be omitted, and here, the playlist generation phase will be described.

  FIG. 10 is a flowchart showing an example of playlist generation processing in the music playback system according to the second embodiment of the present invention.

  The music playback device 20 and the portable terminal 90 are connected by Bluetooth and operate as a unit. When it is detected that the narrow area communication unit 106 of the music playback device 20 and the narrow area communication unit 906 of the portable terminal 90 are connected via Bluetooth (step S301), the listening user selection unit 903 of the portable terminal 90 performs personal information. A request is made to select a listening user who listens to music from the personal information stored in the storage unit 902 (step S302).

  A request is made to connect to the playback history collection device 21 associated with the selected user by the wide area communication unit 905 of the portable terminal 90, transmit the stored music information stored in the music playback device 20, and generate a playlist. (Step S303).

  The stored music information stored in the music playback device 20 is not transmitted every time a playlist is generated, but is updated only when the information recorded in the playback history collection device 21 is changed. May be.

  When transmitting stored music information stored in the music playback device 20, a password may be requested for security reasons.

  When receiving a request for generating a playlist (step S306), the playback history collection device 21 refers to the user information storage unit 112 and acquires the playback history information of the user from the playback history storage unit 113.

  The playlist generation unit 217 refers to the reproduction history information of the user stored in the reproduction history storage unit 113 and the preference similarity information stored in the preference similarity information storage unit 219, and stores the stored music information reception unit 216. A playlist composed of songs that match the user's preference selected from the songs represented by the stored song information received in step S307 is generated (step S307).

  The generated playlist is transmitted to the music playback device 20 via the portable terminal 90 (step S308).

  When the playlist is received by the playlist receiver 208 (step S304), the music playback device 20 plays back a song according to the playlist at the music playback unit 104 (step S305).

  Next, a playlist creation method in the second embodiment will be described.

  The playback history information stored in the playback history storage unit 113 of the playback history collection device 21 and the stored song information stored in the song information storage unit 103 of the music playback device 20 in the second embodiment are the same as those in the first embodiment. Is the same as the reproduction history information (see FIG. 6) and the stored music information 82 (see FIG. 7).

  The playlist generation unit 217 compares the stored song information stored in the music playback device 20 received by the stored song information receiving unit 216 with the songs included in the playback history information stored in the playback history storage unit 113. Then, a playlist composed of songs having matching attributes and songs having similar preferences is generated. The selection of music with matching attributes is the same as the processing in the first embodiment, and a description thereof will be omitted. Selection of music with similar preferences is performed based on preference similarity information stored in the preference similarity information storage unit 219.

  FIG. 11 is a diagram illustrating an example of preference similarity information in the music playback system according to the second embodiment of this invention.

  As shown in FIG. 11, the preference similarity information 84 includes items such as an artist 84a, a similar artist 84b, and a preference similarity 84c.

  Here, the similar artist 84b and the preference similarity 84c are obtained by statistically processing the reproduction history information based on the investigation result that the user who reproduced one song is likely to reproduce the other song. Can do. For example, in the present embodiment, based on the reproduction history information for each user stored in the reproduction history storage unit 113 (see FIG. 9) of the reproduction history storage device 21, correlation analysis between an artist and an artist similar to the artist is performed. The similarity of preference is calculated.

  FIG. 12 is a diagram illustrating an example of a playlist in the music playback system according to the second embodiment of this invention.

  FIG. 12 shows an example of a playlist created by the playlist generation unit 217 (see FIG. 9). The play list 85 includes items such as a song title 85a, an artist 85b, and a genre 85c.

  The process of creating the playlist 85 from the reproduction history information 81 shown in FIG. 6, the stored music information 82 shown in FIG. 7, and the preference similarity information 84 shown in FIG. 11 will be described below.

  First, from the reproduction history information 81 (see FIG. 6) and the stored song information 82 (see FIG. 7), records 83_1 (song name: “Yaya”) to record 83_4 (song name: “blue”) in the first embodiment are used. Four similar records 85_1 (song name: “Yaya”) to record 85_4 (song name: “blue”) are created (see FIG. 12).

  Next, with reference to the reproduction history information 81 and the preference similarity information 84, a playlist including songs that match the user's preference selected from the songs represented by the stored song information 82 is generated. The That is, since there are two songs whose artist is “Beatles” in the reproduction history information 81 (see FIG. 6), when the similar artists of “Beatles” are checked from the preference similarity information 84 (see FIG. 11), “ In addition to Stones, you can find 3 artists: Carpenters, Hikari Utada, and Elton. Therefore, when these three artists are searched from the stored song information 82 (see FIG. 7), “Carpenters” cannot be found, but “Utada Hikaru” has a record 82_7 (song name: “Hatsukoi”) and “Elton” There is a record 82_6 (song name: “your song”). Therefore, record 85_5 (song name: “first love”) and record 85_6 (song name: “your song”) are added to the playlist 85 (see FIG. 12).

  Further, when similar artists of “Stones” are checked from the preference similarity information 84 (see FIG. 11), “Southern” (record 84_7) is found. Therefore, when “Southern” is searched from the stored music information 82 (see FIG. 7), the record 82_1 is found, so the record 85_7 (song name: “Erie”) is added to the playlist 85.

  In this way, the playlist 85 (see FIG. 12) is generated.

  The playlist 85 may be rearranged in the order of the playlist according to the artist's preference similarity. For example, an artist with a high degree of similarity may be given priority and arranged at the top of the playlist.

  The preference similarity information recorded in the preference similarity information storage unit 219 is generated by the preference similarity information generation unit 210. It is conceivable to use collaborative filtering technology for generating preference similarity information in the preference similarity information generation unit 210. For example, referring to the playback history storage unit 113, it is determined that the preference is strong if the percentage of playback history information in which a certain artist appears at the same time is high, and otherwise the tendency that the preference is similar is weak. It is possible to employ a method of statistically calculating the artist's preference similarity.

  As described above, in the music playback system according to the second embodiment, the stored music information stored in the music playback device 20 is compared with the music included in the passenger's playback history information, and not only the music having the same attribute is compared. Then, a playlist composed of songs having similar preferences is generated. As a result, it is possible to generate a playlist even when there is almost no music having the same attribute between the stored music information stored in the music playback device 20 and the reproduction history information of the passenger.

  In addition, by generating a playlist on the server, it is easy to maintain information on attributes with similar preferences in the latest state, and it is possible to deal with the preference similarity for new artists and the like.

  As described above, according to the music playback system 2, the stored music information stored in the music playback device 20 is transmitted to the playback history collection device 21, and the playlist created by the playback history collection device 21 is transmitted to the music playback device 20. Since the music can be reproduced according to the playlist, the processing load at the time of creating the playlist in the music playback device 20 can be reduced, and the same space including the owner of the music playback device 20 can be provided. It is possible to obtain a music playback system in which a plurality of existing users can play a favorite common song without performing troublesome operations.

  Next, a third embodiment of the present invention will be described.

  FIG. 13 is a block diagram showing a configuration of a music playback system according to the third embodiment of the present invention.

  The music playback system according to the third embodiment corresponds to an embodiment of the third music playback system according to the present invention.

  The music playback system 3 includes a vehicle-mounted music playback device 30 mounted on a vehicle and a portable terminal 91 connected to the music playback device 30 wirelessly or by wire.

  The portable terminal 91 is connected to the music playback device 30 by wired or wireless communication means.

  When the music playback device 30 is used alone, the music playback device 30 can play music based on the music data stored in the music playback device 30 and enjoy music. By configuring the music playback system 3 by connecting the portable terminal 91 to the music playback device 30, it becomes possible to play back songs reflecting the preferences of a plurality of users including the owner of the vehicle. It is possible to provide a more comfortable music environment for passengers.

  The music playback system 3 includes an in-vehicle music playback device 30 and a portable terminal 91 having a communication function. In the music playback system 3, the music playback device 30 uses the music playback device 30 in the music playback device 30. The music based on the music data stored in the device can be reproduced, and the mobile terminal 91 can also reproduce the music based on the music data stored in the apparatus. Furthermore, a list of playback songs on the portable terminal 91 is transmitted to the music playback device 30, and the music playback device 30 can play back music based on the playback song list sent from the mobile terminal 91. Yes.

  Of the various devices included in the music playback system 3 of the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  As shown in FIG. 13, the music playback device 30 includes a music data storage unit 102, a music playback unit 104, a song information storage unit 103, and a narrow area communication similar to those of the music playback device 1 of the first embodiment. In addition to the unit 106 and the control unit 101, a reproduction song list receiving unit 305 that receives a reproduction song list transmitted from the portable terminal 91, and stored song information and reproduction song list stored in the song information storage unit 103 A playlist creation unit 308 is provided that creates a playlist composed of songs with matching attributes by comparing the playback song list received by the reception unit 305.

  As the mobile terminal 91, for example, a mobile music player, a mobile phone having a music playback function, a PHS, or the like can be used. The portable terminal 91 includes, as components related to the present embodiment, a music data storage unit 912 that stores music data representing a song, and music that reproduces a song based on the music data stored in the music data storage unit 912. A playback unit 914, a playback song list storage unit 913 that stores a playback song list that represents the attributes of the played songs, and a playback song list that is stored in the playback song list storage unit 913 toward the music playback device 30 A playback song list transmission unit 915 for transmitting the information, a narrow communication unit 906 for communicating with the music playback device 30, and a control unit 911 for controlling the operation of the entire device.

  In this embodiment, a Bluetooth communication device is used as the narrow area communication unit 106 and the narrow area communication unit 906. These narrow area communication units are not limited to Bluetooth, and may be, for example, a wireless LAN system based on the IEEE 802.11a / b / g standard.

  Next, the operation of the music playback system 3 will be described.

  The operation of the music playback system 3 includes a playback song list transmission phase in which a playback song list is created and transmitted to the music playback device, and a playlist creation phase in which a playlist is created based on the playback song list sent from the mobile terminal. There are two phases.

  FIG. 14 is a flowchart illustrating an example of a playback song list transmission process and a playlist creation process in the music playback system according to the third embodiment.

  The music playback device 30 and the portable terminal 91 are connected by Bluetooth and operate as one body. Further, the portable terminal 91 can play music alone, and a playback song list representing the attributes of the played songs is stored in the playback song list storage unit 913.

  When the mobile terminal 91 receives a playback song list transmission request from the music playback device 30 with the music playback device 30 and the mobile terminal 91 connected to each other via Bluetooth (step S401), the mobile terminal 91 stores the playback song list. The playback song list stored in the unit 913 (see FIG. 13) is transmitted to the music playback device 30 (step S402).

  The music playback device 30 receives the playback song list transmitted from the portable terminal 91 by the playback song list receiving unit 305 (step S403), and the playlist creation unit 308 (see FIG. 13) is stored in the song information storage unit 103. The stored song information stored and the playback song list received by the playback song list receiving unit 305 are compared to create a playlist including songs with matching attributes (step S404).

  The control unit 101 causes the music playback unit 104 to play a song according to the playlist created by the playlist creation unit 308.

  The playlist creation method is basically the same as the playlist creation method in the first music reproduction system described with reference to FIGS.

  Thus, according to the music playback system 3, the music playback device 30 and the mobile terminal 91 are provided, so that a playback music list representing the attributes of the music played back on the mobile terminal 91 is transmitted to the music playback device 30. Since the music playback device 30 can play back the music based on the playback music list, the owner of the music playback device 30 and the user of the portable terminal 91 can select a favorite common song without performing any troublesome operations. Can be played.

  In each of the above-described embodiments, the example in which the music playback devices 10, 20, and 30 are in-vehicle music playback devices has been described. However, the music playback device according to the present invention is limited to the in-vehicle music playback device. Instead, it may be a stationary music player or a portable music player.

  In addition, the music playback system of the present invention is not limited to the above-described embodiments, and the playback history collection devices 11 and 21 are arranged in the same place as the music playback devices 10 and 20, and the music playback devices 10 and 20 are wired. It is good also as a structure connected by.

It is a block diagram which shows the structure of the music reproduction system of the 1st Embodiment of this invention. It is a flowchart which shows an example of the reproduction | regeneration log | history storage process in the music reproduction system of 1st Embodiment. It is a flowchart which shows an example of the reproduction | regeneration log | history storage process in the music reproduction system of 1st Embodiment. It is a flowchart which shows an example of the play list creation process in the music reproduction system of 1st Embodiment. It is a flowchart which shows an example of the play list creation process in the music reproduction system of 1st Embodiment. It is a figure which shows an example of the reproduction | regeneration history information in the music reproduction system of the 1st Embodiment of this invention. It is a figure which shows an example of the stored music information in the music reproduction system of the 1st Embodiment of this invention. It is a figure which shows an example of the play list in the music reproduction system of the 1st Embodiment of this invention. It is a block diagram which shows the structure of the music reproduction system of the 2nd Embodiment of this invention. It is a flowchart which shows an example of the play list production | generation process in the music reproduction system of the 2nd Embodiment of this invention. It is a figure which shows an example of the preference similarity information in the music reproduction system of the 2nd Embodiment of this invention. It is a figure which shows an example of the play list in the music reproduction system of the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the music reproduction system of the 3rd Embodiment of this invention. It is a flowchart which shows an example of the reproduction | regeneration music list transmission process in the music reproduction system of 3rd Embodiment, and a playlist creation process.

Explanation of symbols

1, 2, 3 Music playback system 10, 20, 30 Music playback device 11, 21 Playback history collection device 81 Playback history information 81a Song name 81b Artist 81c Genre 81d Number of plays 81e Last played date 82 Stored song information 82a Song name 82b Artist 82c Genre 82d storage location 83 playlist 83a song name 83b artist 83c genre 84 preference similarity information 84a artist 84b similar artist 84c similarity 85 playlist 85a song name 85b artist 85c genre 90,91 portable terminal 101 control unit 102 music data storage unit 103 song information storage Unit 104 music reproduction unit 105 reproduction music information transmission unit 106 narrow area communication unit 107 reproduction history reception unit 108 playlist creation unit 111 control unit 112 user information Storage unit 113 Playback history storage unit 114 Playback song information reception unit 115 Playback history transmission unit 116 Wide area communication unit 208 Playlist reception unit 209 Stored song information transmission unit 210 Preference similarity information generation unit 216 Stored song information reception unit 217 Playlist generation unit 218 Playlist transmission unit 305 Playback song list reception unit 308 Playlist creation unit 901 Control unit 902 Personal information storage unit 903 Listening user selection unit 904 Playback history storage user selection unit 905 Wide area communication unit 906 Narrow area communication unit 912 Music data storage unit 913 Playback song list storage unit 914 Music playback unit 915 Playback song list transmission unit

Claims (9)

The reproducing music information representing an attribute of the song played in the past multiple users, from an external device that is recorded, the reproducing music information receiving unit for receiving with User chromatography The ID,
A reproduction history storage unit for storing reproduction history information for each user by recording the reproduction song information received by the reproduction song information reception unit in association with the user ID;
A playback history collection device comprising a playback history transmitting unit that receives a request to transmit playback history information specifying a user and transmits the playback history information of the user;
A music data storage unit for storing music data representing a song;
A music playback unit for playing back music based on the music data stored in the music data storage unit;
A song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit;
A reproduction song information transmission unit for transmitting reproduction song information representing the attribute of the song reproduced by the music reproduction unit;
A reproduction history receiving unit that receives the reproduction history information of the user specified in the transmission request transmitted from the reproduction history collection device;
The stored music information stored in the music information storage unit is compared with the playback history information received by the playback history receiving unit, and a predetermined number of songs stored in the music data storage unit are stored. A playlist creation unit that selects a song under conditions and creates a playlist composed of the selected song;
A music playback system comprising: a music playback device including a music playback control unit that causes the music playback unit to play back music according to the playlist created by the playlist creation unit. A portable terminal that mediates communication between the music playback device and the playback history collection device,
A reproduction song information transfer unit that receives the reproduction song information from the music reproduction device and transmits the reproduction song information to the reproduction history collection device;
A reproduction history transmission requesting unit for making a reproduction history transmission request specifying a user in the reproduction history collection device;
The music playback system according to claim 1, further comprising a portable terminal including a playback history transfer unit that receives the playback history information from the playback history collection device and transmits the received playback history information to the music playback device. A reproduction song information receiving unit for receiving reproduction song information representing the attribute of a song reproduced in the past of each user together with a user ID;
A reproduction history storage unit for storing reproduction history information for each user by recording the reproduction song information received by the reproduction song information reception unit in association with the user ID;
A preference similarity information storage unit in which preference similarity information irrelevant to the reproduction of songs by each user is stored in advance , which represents a preference similarity that a user who has played one song is likely to play the other song When,
A stored music information receiving unit for receiving stored music information representing the attributes of the music transmitted from the music playback device;
In response to a transmission request for a playlist that identifies the user, with reference to the reproduction history information of the user stored in the reproduction history storage unit and the preference similarity information stored in the preference similarity information storage unit, A song is selected under predetermined conditions from the songs represented by the stored song information received by the stored song information receiving unit, and a playlist composed of songs that match the selected user's preference is generated. A playlist generator,
A reproduction history collection device comprising a playlist transmission unit for transmitting the playlist generated by the playlist generation unit;
A music data storage unit for storing music data representing a song;
A music playback unit for playing back music based on the music data stored in the music data storage unit;
A reproduction song information transmission unit for transmitting reproduction song information representing the attribute of the song reproduced by the music reproduction unit;
A song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit;
A stored music information transmitting unit for transmitting stored music information stored in the music information storing unit;
A playlist receiving unit for receiving a playlist transmitted from the reproduction history collection device;
A music playback system, comprising: a music playback device including a music playback control unit that causes the music playback unit to play back music according to the playlist received by the playlist receiving unit. A portable terminal that mediates communication between the music playback device and the playback history collection device,
A reproduction song information transfer unit that receives the reproduction song information from the music reproduction device and transmits the reproduction song information to the reproduction history collection device;
A stored music information transfer unit that receives the stored music information from the music playback device and transmits the stored music information to the playback history collection device;
A playlist transmission requesting unit for requesting transmission of a playlist that identifies the user to the reproduction history collection device;
The music playback system according to claim 3, further comprising a portable terminal including a playlist transfer unit that receives a playlist from the playback history collection device and transmits the playlist to the music playback device. In a music playback device comprising a music data storage unit storing music data representing a song, and a music playback unit for playing back a song based on the music data stored in the music data storage unit,
A song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit;
Playback that identifies a user from an external device that stores playback history information for each user by recording the playback song information that represents the attributes of the songs played by a plurality of users in the past in association with the user ID A reproduction history receiving unit for receiving the reproduction history information of the user specified in the transmission request of the history information together with the user ID;
The stored music information stored in the music information storage unit is compared with the playback history information received by the playback history receiving unit, and a predetermined number of songs stored in the music data storage unit are stored. A playlist creation unit that selects a song under conditions and creates a playlist composed of the selected song;
A music playback apparatus comprising: a music playback control unit that plays back music according to the playlist created by the playlist creation unit. In a music playback device comprising a music data storage unit storing music data representing a song, and a music playback unit for playing back a song based on the music data stored in the music data storage unit,
A song information storage unit for storing stored song information representing the attributes of the song represented by the music data stored in the music data storage unit;
A stored music information transmitting unit for transmitting stored music information stored in the music information storing unit;
The reproduction music information indicating the attributes of the music reproduced in the past of a plurality of users is recorded in association with the user ID to store the reproduction history information for each user and receive the stored music information to obtain the playlist. A playlist receiving unit that receives a playlist composed of songs selected from songs whose music data is stored in the music data storage unit from an external device to be created ;
A music playback apparatus, comprising: a music playback control unit that plays back music according to the playlist received by the playlist receiving unit. The music reproducing apparatus according to claim 5 or 6, further comprising a reproduction music information transmitting unit that transmits reproduction music information representing an attribute of the music reproduced by the music reproduction unit. A music playback method in which a music playback device plays music,
  Pre-storing music data representing a song;
  Storing in advance song information representing the attributes of the song represented by the stored music data;
  Playback that identifies a user from an external device that stores playback history information for each user by recording the playback song information that represents the attributes of the songs played by a plurality of users in the past in association with the user ID Receiving the reproduction history information of the user specified in the history information transmission request together with the user ID;
  The song information is compared with the received reproduction history information, a song is selected from songs stored in the music data under a predetermined condition, and a playlist including the selected song is selected. A step to create,
  A music playback method comprising a step of playing back a song based on the music data, according to the created playlist. A music playback program executed in the music playback device ,
In music playback device,
A procedure for storing music data representing a song;
A procedure for storing song information representing attributes of a song represented by the stored music data;
Playback that identifies a user from an external device that stores playback history information for each user by recording the playback song information that represents the attributes of the songs played by a plurality of users in the past in association with the user ID A procedure of receiving the reproduction history information of the user specified in the history information transmission request together with the user ID;
The song information is compared with the received reproduction history information, a song is selected from songs stored in the music data under a predetermined condition, and a playlist including the selected song is selected. The steps to create,
A procedure for playing back a song based on the music data, according to the created playlist, and
Music playback program for running.

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