JP2016119127A - Information processor, method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processor capable of easily sharing information.SOLUTION: A mobile phone 101 stores play lists and music data acquired in any method as own data. The mobile phone 101 exchanges the play lists with other apparatuses, and the music data owned by each other can be exchanged as streaming data on the basis of the play lists. That is, music data (music) can be substantially shared. This technique is applicable to, for example, network systems.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus and method, and a program, and more particularly, to an information processing apparatus and method that can easily share information, and a program.

  Conventionally, there is a method of sharing information by performing communication between apparatuses using a predetermined communication method (see, for example, Patent Document 1).

  In Patent Literature 1, when one user 12A sets a topic with a predetermined subject on the electronic bulletin board 33, the bulletin board server 31 enables writing by the other users 12B and 12C on the topic. When information of content recommended by other users 12B along the topic is written on the topic, a list indicating the recommended content is played on the terminals 11A to 11D of the users 12A to 12D who have accessed through the network 20. Output as a list. When the content included in the playlist is designated, the content server 32 outputs the designated content to the user terminal from which the playlist is output.

JP 2006-285716 A

  However, in order to share information, it is necessary to recognize each other and exchange information about the information to be shared, and setting for realizing information sharing requires complicated work.

  In particular, in recent years, portable communication devices such as mobile phones and PDAs (Personal Digital Assistants) have become widespread due to the development of information processing technology, but such devices are often small and have low operability. Setting work may not be easy. Moreover, since such a portable device has high portability, the mobility of the device itself is also increased. Therefore, it is unlikely to remain connected to one network for a long period of time, and it is highly possible to repeatedly connect and disconnect communications to construct various networks with various partners. That is, there is a possibility that complicated setting work for information sharing may be required each time the network or communication device to be connected is updated frequently.

  For example, in the method of Patent Document 1, it is necessary to refer to an electronic bulletin board in order to obtain information to be shared. In order to enrich the information on the electronic bulletin board, it is necessary to write information. Furthermore, since the personality of the user who wrote on the electronic bulletin board cannot be grasped, there is a possibility that the information posted on the electronic bulletin board may not match his intention.

  Thus, if complicated work is required for information sharing, not only information sharing becomes difficult, but also the user's willingness to share information may be reduced. In addition, since the sharing of information is reduced, the utilization efficiency of each device and each information may be reduced.

  The present invention has been proposed in view of such conventional situations, and makes it possible to easily share information.

  An information processing apparatus according to one aspect of the present technology includes an acquisition unit that acquires management data used for managing the content data, including content data identification information, and a display based on the management data acquired by the acquisition unit A display unit that performs selection, a selection reception unit that receives selection of the content data by a selection operation on the display performed by the display unit, and a request for the content data that has been selected by the selection operation by the selection reception unit And a communication unit that receives the content data corresponding to the request.

  An imaging unit may be further provided, and the acquisition unit may be configured to acquire the management data from image data obtained by imaging by the imaging unit.

  The image corresponding to the image data may include a QR code.

  A short range communication unit may be further provided, and the acquisition unit may be configured to acquire the management data via the short range communication unit.

  The acquisition unit may acquire the management data from an IC card via the short-range communication unit.

  The apparatus may further include a storage unit that stores the management data acquired by the acquisition unit, and the display unit may be configured to perform display based on the management data stored in the storage unit. it can.

  The storage unit further stores session connection information, and the communication unit establishes a session with another device using the session connection information, and transmits the content data request to the other device. The content data corresponding to the request can be received.

  The information processing apparatus may further include a reproducing unit that reproduces the content data received by the communication unit.

  The reproduction unit can sequentially reproduce the content data.

  It can be an in-vehicle device.

  An information processing method according to an aspect of the present technology acquires management data used for managing the content data including content data identification information, performs display based on the acquired management data, and selects the display The information processing method receives a selection of the content data by an operation, transmits a request for the content data that has been selected by the selection operation, and receives the content data corresponding to the request.

  A program according to an aspect of the present technology is based on an acquisition unit that acquires management data used for managing the content data, including content data identification information, and the management data acquired by the acquisition unit. A display unit that performs display, a selection reception unit that receives selection of the content data by a selection operation on the display performed by the display unit, and a selection of the content data that has been selected by the selection operation by the selection reception unit It is a program for functioning as a communication unit that transmits a request and receives the content data corresponding to the request.

  In one aspect of the present technology, management data used for managing content data including content data identification information is acquired, and display based on the acquired management data is performed. Selection of content data is accepted, a request for content data for which selection by the selection operation has been accepted is transmitted, and content data corresponding to the request is received.

  According to the present invention, information can be shared. In particular, information can be shared more easily.

It is a figure which shows the structural example of the network system to which this invention is applied. FIG. 2 is a block diagram illustrating an internal configuration example of the mobile phone 101 in FIG. 1. It is a schematic diagram explaining the state of exchanging a playlist and sharing music data. 4 is a functional block diagram illustrating an example of functional blocks included in a mobile phone 101. FIG. FIG. 4 is a diagram illustrating a configuration example of data included in the mobile phone 101. It is a figure which shows the example of device setting information. It is a figure which shows the example of user additional information. It is a figure which shows the example of play list information. It is a figure which shows the example of music information. It is a figure which shows the example of package information. It is a flowchart explaining the outline | summary of playlist exchange. It is a figure which shows the example of a display. It is a figure which shows the example of a display. It is a figure which shows the example of a display. It is a figure which shows the example of a display. It is a figure explaining the mode of the data which cellular phone A memorizes. It is a figure explaining the mode of the data which cellular phone B memorizes. It is a flowchart which shows the example of the detailed flow of a playlist exchange process. FIG. 19 is a flowchart continued from FIG. 18, illustrating an example of a detailed flow of playlist exchange processing. FIG. It is a flowchart which shows the example of the detailed flow of a playlist exchange process. FIG. 21 is a flowchart continued from FIG. 20, illustrating an example of a detailed flow of playlist exchange processing. It is a figure which shows the structural example of management information. It is a flowchart explaining the outline | summary of music data sharing. It is a flowchart explaining the example of the flow of a play list display control process. It is a figure which shows the example of a display. It is a flowchart which shows the example of the detailed flow of a music data sharing process. It is a flowchart which shows the example of the detailed flow of a music data sharing process. It is a figure which shows the structural example of the personal computer etc. to which this invention is applied.

  Embodiments of the present invention will be described below.

  FIG. 1 is a diagram showing a configuration example of a network system to which the present invention is applied.

  A network system 100 shown in FIG. 1 is configured by a plurality of devices, and can easily share information between the devices. Specifically, the terminal device of the network system 100 transmits the music data held by another device as streaming data in a format that can be sequentially played back while being acquired (streaming playback), and acquires the streaming data. In this system, the audio data is output or, conversely, the music data of the device itself is streamed and reproduced, the streaming data is supplied to another device, and the sound is sequentially output in the other device. That is, the network system 100 is a system for sharing music data.

  The music data is content data obtained by converting a sound signal of music (content) into data. Of course, the music data is not limited to various numbers such as the number, content, time, volume, and data amount of music, and the content of the music data is arbitrary. Note that the term “musical piece” here includes not only musical instruments but also all kinds of audio signals such as human voices, natural sounds, or artificially created sounds. As will be described later, music data is sold, but is basically sold in units of music. In some cases, a plurality of songs are sold together as one package.

  Each device sharing music data in the network system 100 exchanges (exchanges) data called a playlist for sharing. The playlist is management data used for managing content data, which is metadata (related information) including the contents (music pieces) of music data that is data to be shared (shared data) and information about the data itself. . Although details will be described later, for example, identification information such as a song ID and name is included.

  Although the details will be described later, the exchanged playlist is displayed as, for example, a GUI (Graphical User Interface), and when the user selects a song to be reproduced from the playlist, streaming reproduction of the selected song is performed. That is, music data is shared.

  A mobile phone 101 shown in FIG. 1 is a terminal device of the network system 100 that shares such music data. The mobile phone 101 is connected to a public telephone line network via a base station using a wireless communication function and performs voice communication with other telephones. In addition to a so-called call function, the mobile telephone 101 is connected to the Internet via the public telephone line network. And a packet communication function for performing packet communication with other communication devices. The cellular phone 101 uses this packet communication function and, for example, a WEB server 141, a music sales server 142, an SNS server via a network 131 constituted by one or a plurality of networks such as a public telephone line network and the Internet. 143 or the mail delivery server 144 or the like, and can communicate.

  For example, the mobile phone 101 can connect to the WEB server 141 and acquire (receive) a playlist and music data from a WEB site provided by the WEB server 141. In addition, the mobile phone 101 can connect to the music sales server 142 and purchase and acquire music data at a music sales site provided by the music sales server 142, for example. Furthermore, the mobile phone 101 can log in to an SNS (Social Network Sites) provided by the SNS server 143 and acquire a playlist provided by another user or administrator on the SNS. In addition, the mobile phone 101 can acquire an e-mail in which a play list is described or an e-mail to which a play list is attached, which is distributed from the mail distribution server 144.

  Further, the mobile phone 101 receives a digital camera function that captures a subject and obtains image data of the captured image, and a QR (Quick Response) code (registered trademark) (two-dimensional code symbol) captured by the digital camera function. It has a QR code decoding function for decoding and obtaining information included in the QR code. The mobile phone 101 captures the QR code 122 printed or displayed on the device 121 of FIG. 1 using this digital camera function, and is included in the captured QR code 122 using the QR code decoding function. Playlists can be extracted and retained. For example, when a playlist is extracted by the QR code decoding function, an application for sharing music data is activated, and the extracted playlist is stored and managed in the storage unit.

  The device 121 may be any device as long as it presents the QR code 122. For example, a wall of a building, a housing of an apparatus, a printed matter such as a poster or a magazine, and an LCD ( It may be a monitor such as a Liquid Crystal Display or an organic EL display (Organic ElectroLuminescence Display).

  In addition, the mobile phone 101 communicates with other devices connected by wire using a predetermined wire communication standard represented by, for example, USB (Universal Serial Bus) or IEEE (Institute of Electrical and Electronic Engineers) 1394. It further has a communication function. Using this wired communication function, the mobile phone 101 can communicate with a personal computer 104 (hereinafter referred to as a PC 104) connected to the mobile phone 101 as shown in FIG. For example, the mobile phone 101 can acquire a playlist and music data from a wired PC 104 via a communication cable.

  In this way, the mobile phone 101 can easily acquire music data purchased and stored by the PC 104, music data created on the PC 104, or a playlist thereof.

  Of course, the method for acquiring the playlist and the music data may be other than those described above. For example, a playlist or music data may be exchanged via a removable medium such as a flash memory. The mobile phone 101 can also create a playlist of music data that is held based on a user instruction or automatically according to a predetermined condition.

  As described above, the mobile phone 101 can easily acquire a playlist and music data by an arbitrary method.

  The mobile phone 101 stores the playlist and music data acquired as described above as data belonging to itself. The mobile phone 101 exchanges the playlist with another device so that music data held by each other can be exchanged as streaming data based on the playlist. That is, the music data (music) is substantially shared.

  Note that the mobile phone 101 does not necessarily need to store music data of music corresponding to the playlist to be exchanged.

  For example, in the mobile phone 101, the playlist includes information on the supply source of music (music data) corresponding to the playlist (for example, a URL (Uniform Resource Locator) of a site that provides music data). There may be. In such a case, the mobile phone 101 can acquire the music (music data) corresponding to the playlist based on the information at an arbitrary timing in principle. This is substantially equivalent to storing data. Therefore, the mobile phone 101 can exchange such a playlist with another device.

  However, since the mobile phone 101 does not actually store music data, it cannot be streamed as it is. Accordingly, it is desirable that the mobile phone 101 acquires the music data when a reproduction request is made, or prohibits the reproduction request for the music data.

  Note that the mobile phone 101 basically does not store the music (music data) corresponding to the playlist acquired from the playlist exchange partner (the other device stores or Is ready to get). The cellular phone 101 prohibits exchanging a playlist obtained by exchanging with another device for another device. That is, the mobile phone 101 does not exchange playlists obtained by exchange belonging to other devices. Therefore, the mobile phone 101 manages the playlist obtained by the exchange in association with the exchange partner, and distinguishes it from the playlist belonging to itself and the playlist obtained by exchange with another device.

  The mobile phone 101 has a non-contact type IC card function, a reader / writer function for the IC card, and a Bluetooth (Bluetooth®) communication function in addition to the communication function described above.

  An IC card is a card-type device that incorporates an IC chip (semiconductor integrated circuit) for storing and calculating information so that information can be recorded. In general, an IC card can record a larger amount of data than a magnetic card, and is highly safe against data tampering and card forgery. For example, it is applied to electronic money and telephone cards. The The IC card communicates with a corresponding reader / writer, supplies information stored in the IC chip to the reader / writer, and stores data supplied from the reader / writer in the IC chip. A non-contact type IC card performs such data exchange (communication) using wireless communication without contacting the device. That is, the non-contact type IC card (and reader / writer) has an antenna for wireless communication in addition to the IC chip.

  The IC card function is such an IC card function (wireless communication function, data holding function, information processing function, etc.). That is, the cellular phone 101 has a built-in IC card configuration. However, although details will be described later, the mobile phone 101 does not simply include an IC card, but also exchanges data between the configuration of the IC card and other configurations, or executes processes in cooperation with each other. It is made to be able to do.

  The communication distance of wireless communication in this IC card function is not particularly limited and is arbitrary. For example, the contact type may be used instead of the non-contact type (the communication distance may be 0 m). In the following description, it is assumed that the communication distance is an extremely short distance of about 10 cm or less. Contactless IC cards with ultra-short communication distances are currently the most popular and easy to develop. In addition, since contactless communication is possible, it is easy to maintain the posture during communication, and stable communication can be easily realized. Furthermore, since the communication distance is limited to a very short distance, it is easy to identify the communication partner and the work for executing the communication becomes clear, so that the occurrence of unintended communication can be reduced.

  The reader / writer function for the IC card is a function of the above-described reader / writer, and is a function of reading information stored in the IC card and writing information to the IC card.

  In general, IC cards can only communicate with a reader / writer, and IC cards cannot communicate with each other. That is, in this ultra short-range wireless communication, at least one of them needs to have a reader / writer function. The cellular phone 101 has both an IC card function and a reader / writer function. That is, the cellular phone 101 can supply information held by the IC card function to another reader / writer or another device having the reader / writer function. Further, the cellular phone 101 can read information from another IC card or another device having an IC card function by using a reader / writer function.

  The Bluetooth communication function is a function for performing Bluetooth communication, which is one of short-range wireless communication technologies. In addition, near distance has shown the distance about about 10 m or less here. That is, Bluetooth communication has a longer communication distance than ultra-short-range wireless communication using an IC card function (reader / writer function). Therefore, the degree of freedom of the position and posture of the mobile phone 101 is improved as compared with the case of communication using the IC card function. In general, Bluetooth communication has a higher communication speed than communication using an IC card function, and can transmit and receive a large amount of data in a short time.

  The mobile phone 101 exchanges (transfers) playlists with other devices by ultra short-range wireless communication using an IC card function and a reader / writer function. In addition, the mobile phone 101 shares music data (streaming data exchange) with other devices using the Bluetooth communication function.

  For example, the mobile phone 101 can exchange playlists and share music data with the mobile phone 102 having the same function as the mobile phone 101. The mobile phone 102 stores playlists and music data acquired by the same method as that of the mobile phone 101 described above as data belonging to the mobile phone 102. The cellular phone 101 and the cellular phone 102 can exchange playlists by ultra short-range wireless communication using an IC card function (and reader / writer function), and can share music data by Bluetooth communication.

  In addition, for example, the mobile phone 101 includes a personal computer 103 (hereinafter referred to as a BT communication unit 112) having a reader / writer 111 corresponding to an IC card function of the mobile phone 101 and a Bluetooth communication unit 112 (hereinafter referred to as a BT communication unit 112) having a Bluetooth communication function. In the following, it is possible to exchange playlists and share music data. The mobile phone 101 can exchange playlists with the PC 103 via the reader / writer 111. Further, the mobile phone 101 can share music data with the PC 103 by transmitting and receiving streaming data via the BT communication unit 112.

  Further, for example, the mobile phone 101 can supply a playlist to an audio device 105 such as a car audio, and supply streaming data of music data stored in the mobile phone 101 to the audio device 105 having high output performance. Voice output.

  Although not shown, the audio device 105 has a reader / writer function corresponding to the IC card function of the mobile phone 101 and a Bluetooth communication function. The cellular phone 101 supplies a playlist to the audio device 105 by ultra short-range wireless communication using an IC card function. When the user operates the audio device 105 and selects music data stored in the mobile phone 101 from a playlist displayed as a GUI image, streaming data of the music data is transferred from the mobile phone 101 to the audio device 105 by the Bluetooth communication function. To be supplied. In this way, when music data stored in the mobile phone 101 is reproduced, it is possible to output sound with high quality from the high-performance audio device 105.

  In the above, playlists are exchanged by ultra short-range wireless communication using an IC card function and a reader / writer function, and streaming data of music data is exchanged by short-range wireless communication using a Bluetooth communication function. As described above, exchange of playlists and exchange of music data streaming data may be performed using any communication function. For example, the mobile phone 101 may exchange playlists by wire communication with other devices connected by wire, and send / receive music data streaming data. That is, the mobile phone 101 can exchange playlists with the PC 104 connected by wire and exchange music data streaming data.

  As described above, by sharing music data between devices (between users), information assets such as playlists and music data can be used more effectively.

  For example, since a playlist is basically information on music pieces collected by a user, it is also user preference information. Therefore, exchanging playlists not only exchanges music information, but also exchanges each other's preference information. That is, for example, like exchange of business cards, the user can be given information about the other party or can know the other party's information, so that the playlist exchange operation can be a communication means between users.

  In order to establish exchange of playlists, a trust relationship between users becomes important. In other words, mutual trust relationships can be confirmed by exchanging playlists. In other words, the mutual trust relationship between users can be further strengthened by confirming the mutual trust relationship by exchanging playlists.

  Moreover, since a playlist shows a user's preference, the music which does not correspond to one's own preference can be shared by exchanging a playlist. That is, when a certain user collects music based on the user's preference, the genre of music may be biased. Moreover, since there is a limit to the information collection ability of individuals, even if the music matches the preference, it cannot always be obtained. By sharing music data, such bias and deficiency can be reduced. Furthermore, the sharing of music data is not limited to simply sharing data, but can introduce new music to the user and improve their willingness to obtain (purchase).

  Furthermore, by sharing the music data, it is possible to easily change the device for outputting the sound, the music data reproduction work is diversified, and convenience and entertainment are improved. For example, when a plurality of users, such as friends, supply and register a playlist of music data stored in their mobile phones to one audio device or the like, they are stored in each mobile phone from the audio device. Audio output of music data can be performed. In other words, it is possible not only to simply output audio from any device that can share music data, but also to easily bring together and enjoy listening to music with multiple users.

  Next, the mobile phone 101 that functions as a terminal device of the network system 100 as described above will be described. FIG. 2 is a block diagram illustrating an internal configuration example of the mobile phone 101.

  In FIG. 2, a CPU (Central Processing Unit) 201 of the mobile phone 101 is an arithmetic processing unit that executes various processes by executing a software program. The CPU 201 is mutually connected to a ROM (Read Only Memory) 202 and a RAM (Random Access Memory) 203 via a bus 204. A software program and data are stored in the ROM 202 in advance. A software program and data stored in the ROM 202 and the storage unit 213 are loaded into the RAM 203. The RAM 203 also appropriately stores data necessary for the CPU 201 to execute various processes.

  The CPU 201, the ROM 202, and the RAM 203 are connected to each other via the bus 204. An input / output interface 210 is also connected to the bus 204.

  The input / output interface 210 includes an input unit 211 including a keyboard and a mouse, a display including a CRT (Cathode Ray Tube) display and an LCD (Liquid Crystal Display), an output unit 212 including a speaker, and a hard disk. The storage unit 213 is connected. Further, the input / output interface 210 is configured by a modem or the like, and is connected to a telephone line network communication unit 214 that performs voice communication or packet communication with other devices via a public telephone line network.

  In addition to the telephone line network communication unit 214, the input / output interface 210 is connected to a camera unit 215 having a digital camera function for capturing a subject and obtaining the image data, and a wired cable of a predetermined standard such as USB. A wired communication unit 216 that performs wired communication with the other party is connected. Also connected to the input / output interface 210 are a Bluetooth communication unit 217 having a Bluetooth communication function, and an IC card unit 218 having an IC card function and a reader / writer function.

  The Bluetooth communication unit 217 can acquire data read from the ROM 202, the RAM 203, or the storage unit 213 via the input / output interface 210, and supply the data to a communication partner of Bluetooth communication. Data acquired from the other party can be supplied to the RAM 203 or the storage unit 213 via the input / output interface 210 and held.

  The IC card unit 218 has not only an IC card function but also a reader / writer function, and performs ultra short-range wireless communication not only with a reader / writer or a device having a reader / writer function, but also with an IC card or a device having an IC card function. It can be carried out. The IC card unit 218 has a storage unit such as a semiconductor memory inside, can hold data, and can supply the information to a communication partner by ultra short-range wireless communication. The IC card unit 218 can also acquire data read from the ROM 202, RAM 203, or storage unit 213 via the input / output interface 210, and supply the data to a communication partner. Furthermore, the IC card unit 218 can also supply and hold data acquired from a communication partner via the input / output interface 210 to the RAM 203 or the storage unit 213.

  The telephone line network communication unit 214, the camera unit 215, the wired communication unit 216, the Bluetooth communication unit 217, and the IC card unit 218 are assumed to be communication units 231 that exchange playlists, music data, device information, user information, and the like. You can also. A method (communication method) for transmitting and receiving these data is arbitrary, and a method other than those described above may be used. That is, the communication unit 231 may include a configuration other than the telephone line network communication unit 214 to the IC card unit 218, and if communication is possible by some method, the telephone line network communication unit 214 to the IC card unit 218. A part or all of the configuration may be omitted.

  A drive 219 is connected to the input / output interface 210 as necessary, and a removable medium 221 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and a computer program read from them is loaded. It is installed in the storage unit 213 as necessary.

  Next, playlist exchange and music data sharing by the mobile phone 101 will be described. First, a case where music data is shared between two mobile phones having the same configuration and the same function as the mobile phone 101 and the mobile phone 102 will be described with reference to FIG.

  As described above, playlist exchange is performed using ultra short-range wireless communication using an IC card function and a reader / writer function. In the following, a mobile phone connected using the reader / writer function, that is, a mobile phone requesting exchange of a playlist is referred to as a mobile phone A, and a side connected using an IC card function, that is, a playlist The mobile phone on the side that responds to the exchange request will be referred to as a mobile phone B for explanation.

  As shown in FIG. 3A, the mobile phone A stores in advance a playlist A belonging to itself and music data A of music corresponding to the playlist A. Similarly, the mobile phone B stores a playlist B belonging to itself and music data B of music corresponding to the playlist B in advance.

  The cellular phone A on the side requesting the exchange of the playlist is set in the polling mode and is brought close to the cellular phone B as shown in FIG. 3B. When the mobile phone A and the mobile phone B are brought close to each other within the communicable range and the connection is established, the playlist is exchanged. That is, the cellular phone A supplies the playlist A to the cellular phone B, acquires the playlist B from the cellular phone B, and stores and manages the playlist B in association with the cellular phone B. As a result, the mobile phone A holds the playlist A that has been held from the beginning, the playlist B that has been acquired this time, and the music data A that corresponds to the playlist A.

  Conversely, the cellular phone B supplies the playlist B to the cellular phone A, acquires the playlist A from the cellular phone A, and stores and manages the playlist A in association with the cellular phone A. As a result, the mobile phone B holds the playlist B that has been held from the beginning, the playlist A that has been acquired this time, and the music data B that corresponds to the playlist B.

  In this way, when exchanging playlists that are also information indicating individual user characteristics, in order to avoid unintended exchanges, devices that perform communication are sufficiently close to each other, such as the above-described ultra short-range wireless communication, etc. A communication method that can clearly indicate the communication partner is desirable.

  In general, the antenna of the IC card unit 218 used for ultra short-range wireless communication is provided inside the casing of the mobile phone and is not exposed to the outer surface. Accordingly, since the IC card unit 218 of each device does not come into contact, the devices may be brought into contact with each other when exchanging playlists (similar to bringing them close to each other).

  In this state, when the user selects a song to be played from the playlist B, the mobile phone A uses the Bluetooth communication to carry a playback request for the selected song (music data) as shown in FIG. 3C. For telephone B. The mobile phone B performs streaming playback of the music data B in response to the request, and supplies the streaming data to the mobile phone A using Bluetooth communication. The mobile phone A reproduces the streaming data and outputs sound from the speaker. Of course, on the contrary, the cellular phone B can also request the cellular phone A to reproduce the music data A. That is, the mobile phone A and the mobile phone B can share the music data (music data A and music data B) of each other by exchanging playlists.

  However, in order to share music data, it is necessary for the mobile phone A and the mobile phone B to be positioned within the communicable range of Bluetooth communication.

  In the mobile phone A and the mobile phone B, the playlist is displayed on the screen as a GUI. The user operates the GUI to select music (music data) to be reproduced from the displayed playlist. When a song is selected, the mobile phone 101 identifies where the song (music data) corresponding to the playlist exists, and if it has it, plays it and outputs the sound To do. If the music data selected by the user exists in another device, the device is requested to perform streaming playback. At this time, if another device does not exist within the communicable range, the music cannot be reproduced. Therefore, when the mobile phone 101 displays the playlist in the GUI, it is desirable to detect other devices in the communicable range and set the playlist included in the undetected device so that the user cannot select it. .

  FIG. 4 is a diagram illustrating a configuration example of functional blocks that the mobile phone 101 has in order to realize such exchange of playlists and sharing of music data.

  As illustrated in FIG. 4, the mobile phone 101 includes a device control unit 301 that controls the entire mobile phone 101. The device control unit 301 is a functional block realized by the CPU 201, the ROM 202, the RAM 203, the bus 204, and the like in FIG. 2, and includes a playlist exchange A control unit 311, a playlist exchange B control unit 312, a display control unit 313, A transmission side reproduction processing control unit 314 and a reception side reproduction processing control unit 315 are included.

  The playlist exchange A control unit 311 is a control unit that controls processing relating to playlist exchange of the mobile phone A in the example of FIG. The playlist exchange B control unit 312 is a control unit that controls processing related to playlist exchange of the mobile phone B in the example of FIG. The display control unit 313 is a control unit that controls display of, for example, a playlist. The transmission side reproduction processing control unit 314 is a control unit that controls transmission side reproduction processing for streaming reproduction of music data based on a request from another apparatus. The reception-side reproduction processing control unit 315 is a control unit that controls reception-side reproduction processing that receives and reproduces streaming data transmitted from another device and outputs sound.

  The mobile phone 101 also has a device memory 302 as a storage area of the mobile phone 101. The device memory 302 is a functional block realized by the RAM 203 and the storage unit 213 in FIG. The device memory 302 is configured as a storage area different from the IC card function, and has a storage area with a larger capacity than the memory capacity of the IC card unit 218. The device memory 302 stores a large amount of data such as a playlist and music data.

  The mobile phone 101 includes an IC card control unit 321, an IC card memory 322, and an antenna unit 323 as the IC card unit 218. The IC card control unit 321 performs control processing for realizing an IC card function. The IC card memory 322 is a storage area for realizing a data holding function of the IC card function. The antenna unit 323 is an antenna that transmits and receives signals in ultra-short distance wireless communication using an IC card function, and transmits information supplied from the IC card control unit 321 or is supplied from the outside via ultra-short distance wireless communication. Information is received and supplied to the IC card control unit 321.

  Furthermore, the mobile phone 101 includes a Bluetooth control unit 331 and an antenna unit 332 as the Bluetooth communication unit 217. The Bluetooth control unit 331 performs control processing related to Bluetooth communication. The antenna unit 332 is an antenna that transmits and receives signals in the Bluetooth communication.

  Further, the mobile phone 101 includes a transmission player 341 and a reception player 342. The sending player 341 performs streaming playback of the music data and outputs the streaming data. The receiving player 342 reproduces the streaming data and outputs an audio signal.

  The device control unit 301 executes various processes based on user instructions input via the input unit 211. The playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to execute ultra-short-range wireless communication and to execute processing as the mobile phone A related to playlist exchange. Further, the playlist exchange A control unit 311 reads out data stored in the device memory 302 and supplies the data to the IC card control unit 321, and transmits the data by ultra short-range wireless communication, or the IC card control unit 321. Obtains data received by ultra short-range wireless communication and stores it in the device memory 302.

  The playlist exchange B control unit 312 controls the IC card control unit 321 to execute ultra short-range wireless communication and to execute processing as the mobile phone B related to playlist exchange. Further, the playlist exchange B control unit 312 reads out data stored in the device memory 302 and supplies the data to the IC card control unit 321 to transmit the data by ultra short-range wireless communication, or the IC card control unit 321. Obtains data received by ultra short-range wireless communication and stores it in the device memory 302.

  The display control unit 313 controls image display by a monitor included in the output unit 212. For example, the display control unit 313 reads a playlist stored in the device memory 302, supplies the playlist to the output unit 212, and causes the monitor to display an image of the playlist as a GUI. In addition, the display control unit 313 controls the input unit 211 to accept a user instruction input for display on the monitor.

  The transmission side reproduction processing control unit 314 reads the requested music data (music piece) from the device memory 302 based on the reproduction request received via the Bluetooth control unit 331 and causes the transmission side player 341 to generate streaming data. . The transmission side reproduction processing control unit 314 supplies the streaming data to the Bluetooth control unit 331 and transmits it to the request source.

  When the user selects a song belonging to another device from the playlist, the reception-side playback processing control unit 315 controls the Bluetooth control unit 331 to transmit a playback request. When the Bluetooth communication unit 217 receives the streaming data transmitted in response to the reproduction request, the reception-side reproduction processing control unit 315 acquires the streaming data from the Bluetooth control unit 331 and causes the reception-side player 342 to reproduce the data. Sound is output from the speaker of the output unit 212.

  Next, data stored in the mobile phone 101 will be described. FIG. 5 is a schematic diagram illustrating a configuration example of data stored in the mobile phone 101.

  The mobile phone 101 stores various data in two areas, an IC card memory 322 and a device memory 302. The device control unit 301 accesses the common area of the IC card memory 322 via the IC card software 351, and reads and writes data. Further, the device control unit 301 accesses the device memory 302 via a device API (Application Program Interface) 352, and reads and writes data. The IC card software 351 and the device API 352 function as an interface for the IC card memory 322 and the device memory 302, respectively. By using such IC card software 351 and device API 352 to access the IC card memory 322 and the device memory 302, the device controller 301 can be easily developed.

  The IC card memory 322 can store only a small amount of data. In the common area of the IC card memory 322, for example, IC card manufacturing information 361, device setting information 362, and log information 363 are stored. The IC card manufacturing information 361 is identification information for identifying the IC card control unit 321 assigned to the IC card control unit 321 at the time of manufacturing. When the mobile phone 101 has one IC card function (IC card unit 218), the IC card manufacturing information 361 can also be used as information for identifying the mobile phone 101.

  The device setting information 362 is information related to the mobile phone 101 as a device provided with the IC card unit 218. The device setting information 362 includes, for example, device information 371 that is information about the mobile phone 101 such as functions and performance of the mobile phone 101 and user information 372 that is basic information about the user of the mobile phone 101.

  The log information 363 is history information of communication processing and playback processing. The log information 363 includes, for example, a high touch log 373 that is history information of ultra short-range wireless communication by the IC card unit 218 and a latest reproduction log 374 that is information related to the previous reproduction processing.

  The device memory 302 can store a larger amount of data than the IC card memory 322. In the device memory 302, for example, user additional information 381, play list information 382, user list 383, and the like are stored.

  The user additional information 381 is more detailed information regarding the user of the mobile phone 101. The user additional information 381 includes user information A391 and user information B392 that are classified into levels so that the range of information disclosure can be set in stages.

  The playlist information 382 is information related to music data as described above. The playlist information 382 includes a device ID 393 that is identification information that identifies a device in which music data corresponding to the playlist is stored, and a product number list 394 that is a list of product numbers that is identification information of the music data. . The product numbers included in the product number list 394 are information that can identify music data at least in a device that stores the music data.

  The user list 383 is a list of user information of users who have exchanged playlists. Therefore, the user list 383 includes information such as a user ID 395, an icon number (icon No) 396, a handle name 397, and a greeting 398 for each user.

  In addition, the device memory 302 also stores music information 401 that is information regarding the music for each product number (each music) included in the product number list 394 of the playlist information 382. The music information 401 includes, for example, a product number 411 that identifies a music, a title 412 of the music, and a package ID 413 to which the music belongs. The product number 411 is the same as the product number included in the product number list 394. That is, each product number in the product number list 394 and the music information 401 are associated by this product number 411. Note that the product number 411 and the product number included in the product number list 394 may not be the same as long as the correspondence relationship between the product number list 394 and the music information 401 can be shown. The package ID 413 is information for identifying a package, which is a unit as a work, composed of one or a plurality of music pieces. For example, a music piece is sold or exchanged as a plurality of music pieces. As a unit of management at that time, a unit of the plurality of music pieces is set as one unit.

  The device memory 302 also stores package information 421 that is information related to the package ID 413 of the music information 401. The package information 421 includes, for example, a package product number 431, a package name 432, a package name 433, and a jacket URL 434. The package product number 431 is the same as the package ID 413 and is information that associates the package information 421 with the music information 401. Note that the package product number 431 does not have to be the same as the package ID 413 if the package information 421 indicates a correspondence relationship with the package ID 413 of the corresponding package.

  The package name 432 and the package name 433 are information on names assigned to the packages for facilitating the identification of the package by the user. The jacket URL 434 is information indicating the data provider of the image (jacket) assigned to the package. The URL 434 may be anything as long as it is information indicating a jacket data provider, and may be information other than the URL.

  Each data will be described in more detail with reference to FIGS. FIG. 6 is a diagram illustrating an example of data included in the device setting information 362.

  In the example of FIG. 6, the device information 371 includes, for example, information of a maximum of 192 bytes. The device information 371 may be any information as long as it is information (information regarding the mobile phone 101) as a terminal device such as identification information and information regarding functions. The user information 372 is information related to the user of the mobile phone 101 and includes, for example, information such as an information disclosure level, a disclosure icon, a handle name, and a greeting. The information disclosure level is information for setting how far information on the user and the mobile phone 101 is disclosed to other users (devices). For example, it is designated whether or not playlists are to be exchanged, and what information is to be disclosed, such as device information 371 and user information 372. The information disclosure level is set based on, for example, a user instruction input via the GUI.

  The public icon is information for setting an image (icon) indicating the user. This icon may be selectively determined from images prepared in advance, or an image created by a user or the like may be used. An image designated by the public icon is published as an icon indicating the user (provided to another device when the playlist is exchanged). The handle name is a name indicating the user, and can be arbitrarily set by the user. The greeting text is, for example, a message text for self-introduction and can be arbitrarily set by the user.

  Of course, the device setting information 362 may include information other than those described above.

  FIG. 7 is a diagram illustrating an example of data included in the user additional information 381. In the example of FIG. 7, the user information A391 of the user additional information 381 is information to be disclosed to other users more than other users to be disclosed of the user information B392 in the user additional information 381 or arbitrary Information that is disclosed to other users, including information that is difficult to directly identify individual users, such as the user's gender, blood type, birthday, and constellation (relatively general information) It is. The user information B392 is information that can be disclosed only to some other users among the user additional information 381, or information that is not disclosed to other users. Information (relatively highly personalized information) that can directly identify individual users, such as name, name, phone number, e-mail address, phone number, URL, and RSS (Rich Site Summary), is included.

  FIG. 8 is a diagram illustrating an example of data included in the playlist information 382. As shown in FIG. 8, the device ID 393 is composed of, for example, 16-digit alphanumeric characters obtained by ASCII-converting 8 bytes of the device ID assigned to the device. The product number list 394 includes, for example, product numbers for each music piece.

  FIG. 9 is a diagram illustrating an example of data included in the music information 401. As shown in FIG. 9, in the music information 401, in addition to the product number 411, the music title 412, and the package ID 413, for example, a kana title that indicates the music title in katakana and the name of the music player (player) are shown. Artist name, artist name in which the artist name is written in katakana, genre name that indicates the type of music (genre), song time that indicates the playback time of the song, sound source purchase URL that indicates the URL where the music data is purchased, and details of the song Information such as an extended URL indicating a URL such as RSS for which various explanations are presented and the number of times of reproduction indicating the number of times of reproduction so far may be included. Of course, information other than these may be included in the music information 401.

  FIG. 10 is a diagram illustrating an example of data included in the package information 421. As shown in FIG. 10, the package information 421 may include information such as the sales start date of the package in addition to the package ID 431, the package name 432, the package name 433, and the jacket URL 434. Of course, information other than these may be included in the package information 421.

  Next, a flow of processing relating to exchange of playlists and sharing of music data by the mobile phone 101 configured as described above will be described. First, an overview of playlist exchange will be described with reference to the flowchart of FIG. FIG. 11 is a flowchart for explaining the outline of playlist exchange between the mobile phone A and the mobile phone B as in the example of FIG.

  When the user performs an operation for instructing the exchange of the playlist, the cellular phone A sets the operation mode of the IC card unit 218 to the polling mode in step S101, and sends a polling signal by ultra-short distance wireless communication performed by the IC card unit 218. Output and capture other IC cards in the communicable range. At the same time, the mobile phone A brings itself (the mobile phone A) close to the mobile phone B to be the playlist exchange partner, such as “Please touch the other party's mobile phone” shown in FIG. A message prompting the user is displayed on the monitor.

  When the cellular phone A is sufficiently close to the cellular phone B and receives the polling signal in step S121, the cellular phone B responds to the polling signal in step S122 as the IC card unit 218 of the cellular phone B (or IC card manufacturing information 451 for identifying the mobile phone B itself having the IC card function) is transmitted to the mobile phone A by ultra-short distance wireless communication performed by the IC card unit 218.

  The IC card manufacturing information 451 is stored in the IC card memory 322. That is, the IC card manufacturing information 451 is equivalent to the IC card manufacturing information 361 shown in FIG.

  In step S102, the mobile phone A receives the response, that is, the IC card manufacturing information 451 of the mobile phone B. When the IC card manufacturing information 451 is received, the cellular phone A performs an extremely close process in which the IC card unit 218 makes a basic setting information read request to the supplier of the IC card manufacturing information 451, that is, the cellular phone B in step S103. Send by distance wireless communication. When the cellular phone B receives the request in step S123, in step S124, the basic setting information 452 of the cellular phone B is transmitted to the cellular phone A as a response to the request by the ultra short-range wireless communication performed by the IC card unit 218. Send.

  The basic setting information 452 is a basic information necessary for exchanging playlists (hereinafter referred to as ad-hoc communication) stored in the IC card memory 322 using a connection method called ad hoc for ultra short-range wireless communication. The setting information. That is, the basic setting information 452 is equivalent to the device setting information 362 in FIG. 5 and includes device information 371, user information 372, and the like as shown in FIG.

  In step S104, the mobile phone A receives the response, that is, the basic setting information 452 of the mobile phone B. When the basic setting information 452 is received, the cellular phone A requests the cellular phone B to start ad hoc communication in step S105. When the mobile phone B receives the request in step S125 and accepts the connection, ad hoc communication is established and data transmission / reception is started. In step S106, the cellular phone A exchanges data with each other in step S126.

  For example, the cellular phone A transmits cellular phone A information 453 including IC card manufacturing information 451 and basic setting information 452 of the cellular phone A to the cellular phone B. In addition, the mobile phone A and the mobile phone B exchange, for example, mutual extension setting information 454 and playlist information 455. The extended setting information 454 is setting information stored in the device memory 302 and extended as necessary. That is, the extended setting information 454 is equivalent to the user additional information 381 in FIG. The playlist information 455 is information for designating music stored in the device memory 302. That is, the playlist information 455 is equivalent to the playlist information 382 in FIG.

  While this ad hoc communication is being performed, a message “playlist exchange in progress” indicating that communication is in progress is displayed on the monitor of the mobile phone A as shown in FIG. When the exchange of playlists is completed, a message “Playlist exchange completed” indicating that the exchange of playlists has been completed is displayed on the monitor of the mobile phone A as shown in FIG.

  When the exchange of playlists is completed as described above, the mobile phone A notifies the end of the ad hoc communication to the mobile phone B in step S107, and the mobile phone B receives the notification in step S127. In this way, ad hoc communication is terminated.

  In step S125, the mobile phone B receives an ad hoc communication start request and exchanges a playlist, or reproduces music data based on the playlist. The application realizes the function of the device control unit 301. Is activated. During the activation, as shown in FIG. 15, a message “Activating application” is displayed on the monitor of the mobile phone B. When the application is activated, ad hoc communication is started and data transmission / reception is started (step S126). At this time, a message as shown in FIG. 13 is displayed on the monitor of the mobile phone B as in the case of the mobile phone A. When the playlist exchange is completed, a message as shown in FIG. 14 is displayed on the monitor of the mobile phone B as in the case of the mobile phone A.

  When the ad hoc communication is terminated, the mobile phone A creates ad hoc communication log information 456 and stores it in the IC card memory 322 in step S108. That is, the log information 456 is equivalent to the high touch log 373 in FIG. Similarly, the mobile phone B creates ad hoc communication log information 457 and stores it in the IC card memory 322 in step S128. That is, the log information 457 is equivalent to the high touch log 373 in FIG.

  FIG. 16 is a diagram illustrating an example of a state of transition of information stored in the mobile phone A in the playlist exchange as described above.

  In the initial state before the process of step S101 in FIG. 11 is started, the storage area of mobile phone A (including both IC card memory 322 and device memory 302) is shown at the leftmost in FIG. Like the storage area 461, IC card manufacturing information 451A that is IC card manufacturing information 451 of the mobile phone A, basic setting information 452A that is basic setting information 452 of the mobile phone A, and extended settings that are extended setting information of the mobile phone A Information 454A and playlist information 455A, which is playlist information 455 of music data (songs) stored in mobile phone A, are stored.

  In step S102, when the cellular phone A receives the IC card manufacturing information 451 from the cellular phone B, the cellular phone A stores the cellular phone in the storage area 462 shown second from the left in FIG. IC card manufacturing information 451B, which is B's IC card manufacturing information 451, is added.

  In step S104, when the mobile phone A receives the basic setting information 452 from the mobile phone B, the mobile phone A further stores the mobile phone A in the storage area 463 as shown in the third storage area 463 from the left in FIG. Basic setting information 452B, which is basic setting information 452 of the telephone set B, is added.

  When the extended setting information 454 and the playlist information 455 are exchanged and the log information 456 is created in step S108, the storage area of the mobile phone A is similar to the storage area 464 shown in the rightmost part of FIG. Furthermore, extended setting information 454B which is extended setting information 454 of the mobile phone B, playlist information 455B which is playlist information 455 of music data stored in the mobile phone B, and the log information 456 created in step S108 are added. Is done.

  FIG. 17 is a diagram corresponding to FIG. 16, and is a diagram illustrating an example of a state of transition of information stored in the mobile phone B in exchanging playlists.

  In the initial state before the process of step S101 in FIG. 11 is started, the storage area (including both the IC card memory 322 and the device memory 302) of the mobile phone B has a storage area 471 shown on the left in FIG. As described above, IC card manufacturing information 451B, basic setting information 452B, extended setting information 454B, and playlist information 455B are stored.

  When each process of step S121 to step S128 is executed, information such as a playlist is exchanged and log information 457 is created, a storage area 472 shown on the right in FIG. Further, IC card manufacturing information 451A, basic setting information 452A, extended setting information 454A, playlist information 455A, and log information 457 are added.

  Next, the playlist exchange process described with reference to FIG. 11 will be described in more detail with reference to the flowcharts of FIGS.

  FIG. 18 and FIG. 19 are flowcharts showing an example of the processing flow of each part of the device control unit 301, the device memory 302, and the IC card unit 218 of the mobile phone A.

  When the user is instructed to exchange the playlist, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to contact the IC card unit 218 in a non-contact manner in step S211 of FIG. Set to polling mode. When the IC card control unit 321 of the IC card unit 218 acquires the instruction in step S231, it controls the antenna unit 323 to output a polling signal and starts polling in step S232.

  When the cellular phone A is sufficiently close to the cellular phone B, the cellular phone B transmits manufacturing information in response to the polling signal. When the IC card control unit 321 of the IC card unit 218 controls the antenna unit 323 and receives the manufacturing information in step S233, the device for identifying the mobile phone B included in the received manufacturing information in step S234. The ID is supplied to the device memory 302 and stored.

  Upon acquiring the device ID in step S201, the device memory 302 registers the acquired device ID as the user ID of the user of the mobile phone B in step S202.

  Next, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to request basic setting information 452B of the mobile phone B in step S212. When acquiring the request in step S235, the IC card control unit 321 of the IC card unit 218 transmits a basic setting information request for requesting the basic setting information 452B via the antenna unit 323 in step S236. The mobile phone B transmits basic setting information 452B in response to the request. In step S237, the IC card control unit 321 of the IC card unit 218 receives the basic setting information 452B transmitted from the mobile phone B via the antenna unit 323. In step S238, the IC card control unit 321 receives the received basic setting information 452B. And supplied to the playlist exchange A control unit 311 of the device control unit 301.

  When the playlist exchange A control unit 311 of the device control unit 301 acquires the basic setting information 452B in step S213, the playlist exchange A control unit 311 analyzes the acquired basic setting information 452B and extracts necessary information from the basic setting information 452B in step S214. Additional information to be added to the user ID is generated. In step S215, the playlist exchange A control unit 311 supplies the generated additional information to the device memory 302 to store it. When the additional information is acquired in step S203, the device memory 302 registers the additional information for each user by storing the additional information in association with the user ID registered in step S202 in step S204.

  When the additional information is stored, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to request the start of ad hoc communication with the mobile phone B in step S216. When the IC card control unit 321 of the IC card unit 218 acquires the request in step S239, in step S240, the mobile phone B requests connection of ad hoc communication or receives a response via the antenna unit 323. The communication connection process is performed, and ad hoc communication with the mobile phone B is started. When communication is started, the IC card control unit 321 of the IC card unit 218 notifies the playlist exchange A control unit 311 of the start of communication in step S241.

  When the playlist exchange A control unit 311 of the device control unit 301 obtains the notification in step S217, the playlist exchange A control unit 311 controls the IC card control unit 321 in step S218, and the IC card manufacturing information 451A and basic setting information 452A of the cellular phone A are controlled. To send. When the IC card control unit 321 of the IC card unit 218 acquires the request in step S242, in step S243, the IC card manufacturing information 451A and the basic setting information 452A are read from the IC card memory 322, and the antenna unit 323 is read out. Via the mobile phone B.

  Further, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to request the extended setting information 454B of the mobile phone B in step S219. When obtaining the request in step S244, the IC card control unit 321 of the IC card unit 218 transmits an extension setting information request for requesting the extension setting information 454B to the mobile phone B via the antenna unit 323 in step S245. . The mobile phone B transmits the extended setting information 454B to the mobile phone A as a response to the request. The IC card control unit 321 of the IC card unit 218 receives the extended setting information 454B in step S246, and supplies the received extended setting information 454B to the playlist exchange A control unit 311 in step S247.

  When the playlist exchange A control unit 311 of the device control unit 301 acquires the extension setting information 454B in step S220, the playlist exchange A control unit 311 analyzes the acquired extension setting information 454B in step S221, extracts necessary information, and sets the user ID as the user ID. Generate additional information to be added. In step S222, the playlist exchange A control unit 311 supplies the generated additional information to the device memory 302 and stores it. Upon acquiring the additional information in step S205, the device memory 302 registers the additional information for each user by storing the additional information in association with the user ID registered in step S202 in step S206.

  Further, the playlist exchange A control unit 311 of the device control unit 301 requests the extended setting information 454A of the mobile phone A stored in the device memory 302 in step S271 of FIG. Upon acquiring the request in step S261, the device memory 302 reads the extended setting information 454A from the storage area in step S262 and supplies it to the playlist exchange A control unit 311. When the playlist exchange A control unit 311 of the device control unit 301 acquires the extension setting information 454A in step S272, the playlist exchange A control unit 311 supplies the acquired extension setting information 454A to the IC card control unit 321 in step S273. To send to. When the IC card control unit 321 of the IC card unit 218 acquires the extended setting information 454A in step S291, the IC card control unit 321 transmits the extended setting information 454A to the mobile phone B via the antenna unit 323 in step S292.

  Also, the playlist exchange A control unit 311 of the device control unit 301 requests the device memory 302 for playlist information 455A corresponding to the music data stored in the device memory 302 in step S274. Upon obtaining the request in step S263, the device memory 302 reads the playlist information 455A from the storage area in step S264 and supplies it to the playlist exchange A control unit 311. When the playlist exchange A control unit 311 of the device control unit 301 acquires the playlist information 455A in step S275, the playlist exchange A control unit 311 supplies the acquired playlist information 455A to the IC card control unit 321 in step S276, and the cellular phone B To send to. When the IC card control unit 321 of the IC card unit 218 acquires the playlist information 455A in step S293, the playlist information 455A is transmitted to the mobile phone B via the antenna unit 323 in step S294.

  Also, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 to request the playlist information 455B of the mobile phone B in step S277. When acquiring the request in step S295, the IC card control unit 321 of the IC card unit 218 transmits a playlist request for requesting the playlist information 455B to the mobile phone B via the antenna unit 323 in step S296. The cellular phone B transmits the playlist information 455B to the cellular phone A as a response to the request. The IC card control unit 321 of the IC card unit 218 receives the playlist information 455B in step S297, and supplies the received playlist information 455B to the playlist exchange A control unit 311 in step S298.

  When the playlist exchange A control unit 311 of the device control unit 301 acquires the playlist information 455B in step S278, the playlist information 455B is supplied to the device memory 302 and stored in step S279. Upon acquiring the playlist information 455B in step S265, the device memory 302 stores the playlist information 455B in association with the user ID registered in step S202 in step S266, so that the playlist information 455 is stored for each user. sign up.

  When the exchange of playlists is completed as described above, the playlist exchange A control unit 311 of the device control unit 301 controls the IC card control unit 321 in step S280 to end the ad hoc communication. When the IC card control unit 321 of the IC card unit 218 obtains the request in step S299, in step S300, the mobile phone B requests the end of the ad hoc communication or receives a response via the antenna unit 323. The communication end process is performed. When the communication is completed, the IC card control unit 321 of the IC card unit 218 creates the ad hoc communication log information 456 in step S302, and stores the log information 456 in the IC card memory 322 in step S302.

  20 and 21 are flowcharts showing an example of the processing flow of each part of the device control unit 301, the device memory 302, and the IC card unit 218 of the mobile phone B. 20 and 21 are flowcharts corresponding to FIGS. 18 and 19 described above.

  When the mobile phone A in the polling mode is brought close by the processing of step S232 in FIG. 18, the IC card control unit 321 of the IC card unit 218 is transmitted from the mobile phone A that has come close in step S311 in FIG. A detection signal (polling signal) is received via the antenna unit 323. In step S312, the IC card control unit 321 of the IC card unit 218 reads the IC card manufacturing information 451B stored in the IC card memory 322, and uses the IC card manufacturing information 451B as a response to the received detection signal. The data is transmitted to the mobile phone A via the unit 323. The IC card manufacturing information 451B is received by the mobile phone A by the process of step S233 in FIG.

  When the basic setting information request is transmitted from the mobile phone A by the process of step S236 in FIG. 18, the IC card control unit 321 of the IC card unit 218 sends the basic setting information request in step S313 in FIG. Receive. In step S314, the IC card control unit 321 of the IC card unit 218 reads the basic setting information 452B stored in the IC card memory 322, and returns the basic setting information 452B to the antenna unit 323 as a response to the received request. To the mobile phone A. The basic setting information 452B is received by the mobile phone A by the process of step S237 in FIG.

  When the start of ad hoc communication is requested from the mobile phone A by the processing in step S240 in FIG. 18, the IC card control unit 321 of the IC card unit 218 responds to the request in step S315 in FIG. To start. In step S316, the IC card control unit 321 of the IC card unit 218 activates an application that implements the playlist exchange B control unit 312 of the device control unit 301. When the device control unit 301 acquires the activation request in step S331, the device control unit 301 activates the requested application in step S332, thereby realizing the playlist exchange B control unit 312.

  When the IC card manufacturing information 451A and the basic setting information 452A are transmitted from the mobile phone A by the processing of step S243 in FIG. 18, the IC card control unit 321 of the IC card unit 218 performs the antenna unit in step S317 in FIG. They are received via H.323. In step S318, the IC card control unit 321 of the IC card unit 218 supplies the received IC card manufacturing information 451A and basic setting information 452A to the playlist exchange B control unit 312. In step S333, the playlist exchange B control unit 312 of the device control unit 301 acquires the IC card manufacturing information 451A and basic setting information 452A. In step S334, the playlist exchange B control unit 312 analyzes the basic setting information 452A and extracts necessary information. Then, additional information to be added to the device ID extracted from the IC card manufacturing information 451A is generated. When the additional information is generated, the playlist exchange B control unit 312 of the device control unit 301 supplies the device ID extracted from the IC card manufacturing information 451A and the generated additional information to the device memory 302 in step S335 and stores them. Let Upon acquiring the device ID and additional information in step S341, the device memory 302 registers the device ID as the user ID of the user of the mobile phone A in step S342. In step S343, the device memory 302 registers the additional information for each user by storing the additional information in association with the user ID registered in step S342.

  When the extension setting information request is transmitted from the mobile phone A by the process of step S245 of FIG. 18, the IC card control unit 321 of the IC card unit 218 performs the extension via the antenna unit 323 in step S319 of FIG. The setting information request is received, and the received extended setting information request is supplied to the playlist exchange B control unit 312 in step S320.

  When the request is acquired in step S336, the playlist exchange B control unit 312 of the device control unit 301 requests the extended setting information 454B stored in the device memory 302 in step S337. Upon acquiring the request in step S344, the device memory 302 reads the extended setting information 454B from the storage area in step S345 and supplies it to the playlist exchange B control unit 312. When the playlist exchange B control unit 312 of the device control unit 301 acquires the extension setting information 454B in step S338, the playlist exchange B control unit 312 supplies the extension setting information 454B to the IC card control unit 321 in step S339. To send to. When the IC card control unit 321 of the IC card unit 218 acquires the extended setting information 454B in step S321, the extended setting information 454B is transmitted to the mobile phone A via the antenna unit 323 in step S322. The extended setting information 454B is received by the mobile phone A by the process of step S246 in FIG.

  When the extension setting information 454A is transmitted from the cellular phone A by the processing in step S292 in FIG. 19, the IC card control unit 321 of the IC card unit 218 performs the extension via the antenna unit 323 in step S351 in FIG. The setting information 454A is received, and the received extended setting information 454A is supplied to the playlist exchange B control unit 312 in step S352.

  When the extended setting information 454A is acquired in step S371, the playlist exchange B control unit 312 of the device control unit 301 analyzes the extended setting information 454A, extracts necessary information, and adds it to the user ID in step S372. Additional information to be generated is generated. In step S373, the playlist exchange B control unit 312 supplies the generated additional information to the device memory 302 and stores it. When the additional information is acquired in step S381, the device memory 302 registers the additional information for each user by storing the additional information in association with the user ID registered in step S342 in step S382.

  When the playlist information 455A is transmitted from the mobile phone A by the process of step S294 in FIG. 19, the IC card control unit 321 of the IC card unit 218 performs the play via the antenna unit 323 in step S353 of FIG. The list information 455A is received. In step S354, the IC card control unit 321 of the IC card unit 218 supplies the received playlist information 455A to the playlist exchange B control unit 312.

  When the playlist exchange B control unit 312 of the device control unit 301 acquires the playlist information 455A in step S374, the playlist exchange B control unit 312 supplies the acquired playlist information 455A to the device memory 302 and stores it in step S375. Upon acquiring the playlist information 455A in step S383, the device memory 302 stores the playlist information 455A in association with the user ID registered in step S342 in step S384, so that the playlist information 455A is stored for each user. sign up.

  When the playlist request is transmitted from the cellular phone A by the process of step S296 in FIG. 19, the IC card control unit 321 of the IC card unit 218 receives the playlist via the antenna unit 323 in step S355 of FIG. Receive a request. In step S356, the IC card control unit 321 of the IC card unit 218 supplies the received playlist request to the playlist exchange B control unit 312.

  When the playlist exchange B control unit 312 of the device control unit 301 acquires the playlist request in step S376, the playlist exchange B control unit 312 requests playlist information from the device memory 302 in step S377. Upon acquiring the request in step S385, the device memory 302 reads the playlist information 455B from the storage area and supplies it to the playlist exchange B control unit 312 in step S386. When the playlist exchange B control unit 312 acquires the playlist information 455B in step S378, the playlist exchange B control unit 312 supplies the acquired playlist information 455B to the IC card control unit 321 and transmits it to the mobile phone A in step S379. When the IC card control unit 321 of the IC card unit 218 acquires the playlist information 455B in step S357, the playlist information 455B is transmitted to the mobile phone A via the antenna unit 323 in step S358. The playlist information 455B is received by the mobile phone A by the process of step S297 in FIG.

  When the exchange of playlists is completed as described above, the IC card control unit 321 of the IC card unit 218 performs a communication end process in step S359 corresponding to the process of step S300 in FIG. finish. When the communication is completed, the IC card control unit 321 of the IC card unit 218 creates the ad hoc communication log information 457 in step S360, and stores the log information 457 in the IC card memory 322 in step S361.

  As described above, the mobile phone 101 can easily exchange a playlist with the mobile phone 102 which is another mobile phone having the same function as the mobile phone 101.

  FIG. 22 is a schematic diagram illustrating an example of information registered in the device memory 302.

  Information acquired from the playlist exchange partner is described in the registration information 481 in XML format as shown in FIG. The registration information 481 is information for managing playlists and information about users for each user. As shown in FIG. 22, in the registration information 481, a user ID is described as a tag, a user attribute consisting of information about the user of the user ID, additional information of arbitrary content, a playlist acquired from the user, Information such as manufacturing information, which is information relating to the device used by the user, is described so as to belong to the tag of the user ID.

  As described above, since the playlist information includes information on the device that stores the music data corresponding to the music, the device control unit 301 specifies the location of the music data when the music is designated, for example. That can be done easily. However, with this information alone, for example, when performing playlist display control as will be described later, it is necessary to check the data of all songs when specifying which user (device) each playlist belongs to. As a result, the processing may become complicated.

  As shown in FIG. 22, the device memory 302 manages playlist information for each user, so that the device control unit 301 can easily grasp which playlist belongs to which user.

  As described above, mobile phones having exchanged playlists can share music data by streaming playback. Next, an outline of the music data sharing will be described with reference to the flowchart of FIG. FIG. 23 is a flowchart for explaining an outline of music data sharing performed between the mobile phone A and the mobile phone B as in the example of FIG. Here, a description will be given of a case where music stored in the mobile phone B is stream-played and audio is output from the mobile phone A.

  For example, the cellular phone A that has been instructed to display a playlist by the user performs a playlist display control process in step S401, and displays the playlist on the monitor. Details of the playlist display control process will be described later. When the playlist is displayed on the monitor as a GUI, the user operates the GUI of the playlist to select music to be played. In step S402, the mobile phone A accepts selection of music by the user. Of course, the music to be played may be selected by a user other than the user (for example, some software program or external device).

  When the music is selected, the mobile phone A establishes a session with the mobile phone B that stores the music data of the selected music in Bluetooth communication in step S403. In response to the processing of the mobile phone A, the mobile phone B performs processing related to session establishment in step S411.

  When the session is established, the cellular phone A transmits a reproduction request for the selected music piece to the cellular phone B through the Bluetooth communication in step S404. When the cellular phone B receives the reproduction request in step S412, it activates the transmitting player 341 in step S413. In addition, the mobile phone A that has made the reproduction request activates the receiving player 342 in step S405.

  When the transmitting player 341 is activated, the cellular phone B starts a reproduction transmission process for streaming reproduction of the requested music in step S414. At this time, the mobile phone B may start the reproduction transmission process after confirming that the receiving player 342 is activated in the mobile phone A. For example, the cellular phone A transmits a predetermined activation confirmation signal indicating activation after the activation of the receiving player 342 to the cellular phone B, and the cellular phone B receives the activation confirmation signal, and then receives the activation confirmation signal in step S414. The reproduction transmission process may be started.

  When the reproduction transmission process is started, the cellular phone B transmits the streaming data of the music requested to be reproduced to the cellular phone A by Bluetooth communication in step S415. When the mobile phone A receives the streaming data in step S406, the mobile phone A starts reception output processing for reproducing the streaming data and outputting sound in step S407.

  Mobile phone A and mobile phone B share music data as described above. Then, when streaming playback of the requested music is finished, the mobile phone A and the mobile phone B finish the playback process.

  Contrary to the above-described example, when the mobile phone A outputs the music stored in the music data from the mobile phone B, the processing of the mobile phone A and the processing of the mobile phone B are simply switched. The processing to be executed is the same as that described above. As described above, the mobile phone A and the mobile phone B can easily share music data by exchanging playlists.

  Next, an example of a detailed flow of the playlist display control process executed in step S401 of FIG. 23 will be described with reference to the flowchart of FIG.

  When display of the playlist is instructed, the display control unit 313 of the device control unit 301 displays all the playlist information stored in the device memory 302 in step S431 (playlist information 455A in the example of FIG. 16). And play list information 455B).

  In step S432, the display control unit 313 that has read the playlist generates a GUI image of the playlist, supplies it to the output unit 212, and displays it on the monitor. In step S433, the display control unit 313 controls the input unit 211, and starts music selection reception for receiving selection of music input by the user based on the GUI screen displayed on the monitor.

  FIG. 25 is a diagram illustrating a display example of a playlist. In FIG. 25, a playlist display area 510 is provided in part or all of the display area 501 of the monitor, and the playlist is displayed in the playlist display area 510. Information is displayed as a list for each song so that the playlist can be selected in units of songs. In the example of FIG. 25, information for six pieces of music is displayed like music pieces 511 to 516. The information on each piece of music is basically configured similarly.

  In the case of the example in FIG. 25, for each of the music pieces 511 to 516, an image (jacket image) added to the package to which the music piece belongs is displayed on the left side, and the music name and player name are displayed in the center. The device name for storing the music data of the music is displayed. The squares shown on the left side of the areas of the music pieces 511 to 516 indicate the display area of the jacket image, and the hiragana character strings such as “Aiueo” and “Kakikukeko” shown at the center are the names of the music pieces. An example of (music title) is shown, and the katakana character string such as “Aiueo” and “Kakikukeko” below it shows an example of the player name (artist name) and is surrounded by a square on the right side. The alphabet such as A, B, or C indicates an example of the device name of the device that stores the respective music data. For example, it is shown that the music 511 is a music whose music title is “Aiueo”, artist name is “Aiueo”, and music data is stored in the mobile phone A.

  It should be noted that all the songs in the playlist may be displayed in the display area 501 or some of the songs may be displayed. Of course, a page switching button, a scroll bar, etc. may be provided.

  24, in step S434, the display control unit 313 controls the Bluetooth control unit 331 and inquires about a Bluetooth device that is a device having a Bluetooth communication function. The Bluetooth control unit 331 outputs a detection signal for detecting other Bluetooth devices existing within the communicable range via the antenna unit 332. Other Bluetooth devices that have received the detection signal output information about themselves as a response to the detection signal. When receiving the response, the Bluetooth control unit 331 identifies another Bluetooth device capable of communication based on the content of the response, and supplies the information to the display control unit 313 as an inquiry result.

  In step S435, based on the inquiry result supplied from the Bluetooth control unit 331, the display control unit 313 displays, for example, a gray portion of a music piece corresponding to a device that cannot communicate in the playlist image. That is, in the playlist displayed as the GUI image, the portion of the playlist acquired from a device that is not specified as a communicable device in the inquiry result is displayed in gray. Then, in step S436, the display control unit 313 performs setting so that the user cannot select gray-colored music.

  When the process of step S436 ends, the display control unit 313 ends the playlist display control process, returns the process to step S401 in FIG. 23, and advances the process to step S402 and subsequent steps.

  That is, the display control unit 313 displays the playlist on the monitor as a GUI image. At that time, the display control unit 313 can select only a playlist acquired from a device that is currently capable of Bluetooth communication. For example, if an arbitrary song can be selected, a song in which music data is stored in a device that cannot perform Bluetooth communication may be selected. In this case, since the music cannot be reproduced, it is necessary to select another music again. That is, the music selection operation may be complicated. As described above, the display control unit 313 can select only playlists acquired from devices that are currently capable of Bluetooth communication, thereby suppressing selection of music that cannot be played and facilitating selection of music. can do.

  In addition, by displaying grays of music that cannot be selected, the display control unit 313 enables the user who selects the music to specify music that cannot be easily selected (that is, music that can be selected). , Music selection can be made easier.

  In the above description, the music that cannot be selected is grayed out. However, if the playlist can be easily distinguished from the music that can be selected and the music that cannot be selected, The music may be displayed in any way. For example, non-selectable music may not be displayed, the density may be displayed lighter than selectable music, or may be displayed smaller than selectable music. Good. In other words, the music that cannot be selected is displayed differently from the other music that can be selected.

  The music selection method is arbitrary. For example, the cursor may be displayed so as to be superimposed on the playlist, and the user may operate the cursor to move to the target music portion, and the music on which the cursor is superimposed may be selected. In this case, for example, the cursor may not be moved to a music piece that cannot be selected, or a message indicating that selection is impossible when the cursor is moved to a music piece that cannot be selected. Or a picture may be displayed, or a reproduction instruction may not be input. That is, the method of making selection impossible is also arbitrary.

  Next, details of the processing flow for music data sharing will be described. First, with reference to the flowchart of FIG. 26, the details of processing executed in the mobile phone B which is a device that provides music data in the example of FIG. 23 will be described.

  When a music piece is selected in the mobile phone A, a connection request for Bluetooth communication is transmitted from the mobile phone A to the mobile phone B. In step S501, the Bluetooth control unit 331 of the Bluetooth communication unit (BT communication unit) 217 of the mobile phone B communicates with the mobile phone A via the antenna unit 332 in response to the connection request, and establishes a Bluetooth communication session. To do.

  When the session is established, the Bluetooth control unit 331 of the Bluetooth communication unit 217 receives the reproduction request transmitted from the mobile phone A in step S502. When receiving the reproduction request, the Bluetooth control unit 331 of the Bluetooth communication unit 217 supplies the received reproduction request to the transmission side reproduction processing control unit 314 in step S503.

  When the transmission side reproduction processing control unit 314 of the device control unit 301 acquires the reproduction request in step S511, the transmission side reproduction processing control unit 314 activates the transmission side player 341 in step S512. The transmitting player 341 is activated in step S521 based on the instruction. When the transmission side player 341 is activated, the transmission side reproduction processing control unit 314 of the device control unit 301 controls the transmission side player 341 to reproduce the music specified in the reproduction request in step S513.

  In step S522, the transmission player 341 obtains a reproduction instruction from the transmission reproduction processing control unit 314. In step S523, the transmission player 341 requests the designated music from the device memory 302 to search for the designated music. Do. Upon acquiring the request in step S531, the device memory 302 reads the music data of the music specified in step S532, and supplies the read music data to the transmitting player 341 as a search result.

  When the transmitting-side player 341 acquires the music data supplied from the device memory 302 in step S524, the transmitting-side player 341 starts streaming playback of the music data in step S525, and sends the streaming data played back in step S526 to the Bluetooth control unit 331. Supply. When the Bluetooth control unit 331 of the Bluetooth communication unit 217 acquires the streaming data in step S504, the Bluetooth control unit 331 transmits the streaming data to the mobile phone A via the antenna unit 332 in step S505.

  Next, with reference to the flowchart of FIG. 27, the detail of the process performed in the mobile phone A on the side of outputting the music sound corresponding to the process of FIG. 26 will be described.

  The reception side reproduction processing control unit 315 of the device control unit 301 displays a playlist in step S561, and accepts a song selection instruction in step S562. These processes respectively correspond to step S401 and step S402 in FIG.

  When the music is selected, the reception side reproduction processing control unit 315 of the device control unit 301, in step S563, session connection information necessary for establishing a session with the mobile phone B that stores the music data of the specified music. Is requested to the device memory 302 to search for session connection information. Upon acquiring the request in step S541, the device memory 302 reads the session connection information requested in step S542 from the storage area and supplies it to the reception side reproduction processing control unit 315. When the reception side reproduction processing control unit 315 of the device control unit 301 obtains the session connection information in step S564, in step S565, the reception side reproduction processing control unit 315 supplies the session connection information to the Bluetooth control unit 331 to set the Bluetooth communication. When the Bluetooth control unit 331 of the Bluetooth communication unit 217 obtains the setting request from the device control unit 301 in step S581, it sets Bluetooth communication in step S582.

  In step S566, the reception-side playback processing control unit 315 of the device control unit 301 controls the Bluetooth control unit 331 and requests connection with the mobile phone B by Bluetooth communication. When the Bluetooth control unit 331 of the Bluetooth communication unit 217 acquires the request in step S583, it communicates with the mobile phone B via the antenna unit 332 in step S584 to establish a session. When the session is established, the Bluetooth control unit 331 of the Bluetooth communication unit 217 notifies the reception side reproduction processing control unit 315 to that effect in step S585.

  Upon receiving the notification in step S567, the reception-side playback processing control unit 315 of the device control unit 301 controls the Bluetooth control unit 331 in step S568 and the music specified by the music selection instruction received in step S562. Request playback. When the reproduction request is acquired in step S586, the Bluetooth control unit 331 of the Bluetooth communication unit 217 transmits the reproduction request to the mobile phone B via the antenna unit 332 in step S587.

  When the reproduction request is made, the reception side reproduction processing control unit 315 of the device control unit 301 activates the reception side player 342 in step S569. In step S551, the reception-side player 342 is activated based on the control of the reception-side reproduction processing control unit 315.

  When the mobile phone B transmits streaming data in response to the playback request, the Bluetooth control unit 331 of the Bluetooth communication unit 217 of the mobile phone A receives the streaming data in step S588, and the received streaming data in step S589. Data is supplied to the receiving player 342.

  When the receiving player 342 acquires the streaming data in step S552, in step S553, the receiving player 342 reproduces the acquired streaming data and performs audio output processing for outputting the audio signal.

  As described above, music data is shared between the mobile phone A and the mobile phone B. Thereby, the user can share the music data memorize | stored in each mobile phone only by designating a music using a play list. Also, as described above, playlists can be exchanged simply by bringing devices close to each other, so that users can easily share music data.

  In the above description, the case where music data is shared between mobile phones has been described. However, as described with reference to FIG. 1, the mobile phone 101 can be used in the same manner, for example, the PC 103, the PC 104, and the audio device. Music data can be shared with devices other than mobile phones, such as 105. In other words, devices other than the mobile phone can share music data with other devices.

  In other words, the mobile phone has been described above, but instead of the mobile phone, any information processing device such as a PDA, a notebook personal computer, an electronic dictionary, or a portable music player can similarly transmit music data to other devices. Can be shared. For example, the personal computer 103 in FIG. 1 can share music data with other devices in the same manner as the mobile phone 101.

  FIG. 28 is a block diagram illustrating a configuration example of the personal computer 103 and the like.

  As shown in FIG. 28, the personal computer 103 basically has the same configuration as that of the mobile phone 101 (FIG. 2), and includes a CPU 601 corresponding to the CPU 201, a ROM 602 corresponding to the ROM 202, and a RAM 603 corresponding to the RAM 203. , Has a bus 604 corresponding to the bus 204. Further, the personal computer 103 includes an input / output interface 610 corresponding to the input / output interface 210, an input unit 611 corresponding to the input unit 211, an output unit 612 corresponding to the output unit 212, a storage unit 613 corresponding to the storage unit 213, a wired connection. A communication unit 614 corresponding to the communication unit 216 and a drive 615 corresponding to the drive 219 are included.

  The personal computer 103 is connected to a reader / writer 111 corresponding to the IC card unit 218 and a Bluetooth communication unit 112 corresponding to the Bluetooth communication unit 217. The reader / writer 111 has the same configuration as the IC card unit 218. That is, an IC card control unit 631, an IC card memory 632, and an antenna unit 633 are provided. The reader / writer 111 and the Bluetooth communication unit 112 are each connected to an input / output interface 610.

  That is, the personal computer 103, the reader / writer 111, and the Bluetooth communication unit 112 as a whole have the same configuration as the mobile phone 101 and can perform the same processing. In this way, a part of the configuration may be configured as an external device.

  In the above, sharing of music data has been described. However, the content data to be shared may be any data, and may not be music data such as video data or document data. Also, the playlist may be any information as long as it includes information related to shared data.

  The series of processes described above can be executed by hardware, but can also be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium into a general-purpose personal computer or an information processing apparatus of an information processing system including a plurality of devices.

  For example, as shown in FIG. 2 and FIG. 28, the recording medium is a magnetic disk (including a flexible disk) on which a program is recorded, which is distributed separately from the apparatus main body to distribute the program to the user. Removable optical disks (including CD-ROM (compact disc-read only memory), DVD (digital versatile disc)), magneto-optical disc (including MD (mini-disc) (registered trademark)), or semiconductor memory Not only the medium 221 or the removable medium 621 but also a ROM 202 or ROM 602 in which a program is recorded, or a storage unit 213 or a storage unit 613 that is distributed to a user in a state of being incorporated in the apparatus main body in advance. Composed.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. It also includes processes that are executed individually.

  Further, in this specification, the system represents the entire apparatus composed of a plurality of devices (apparatuses).

  In the above, the configuration described as one device may be divided and configured as a plurality of devices. Conversely, the configurations described above as a plurality of devices may be combined into a single device. Of course, configurations other than those described above may be added to the configuration of each device. Furthermore, if the configuration and operation of the entire system are substantially the same, a part of the configuration of a certain device may be included in the configuration of another device. That is, the embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 100 Network system 101 Mobile phone 102 Mobile phone 217 Bluetooth communication part 218 IC card part 301 Device control part 302 Device memory 311 Playlist exchange A control part 312 Playlist exchange B control part 313 Display control , 314 transmitting side playback processing control unit, 315 receiving side playback processing control unit, 321 IC card control unit, 322 IC card memory, 323 antenna unit, 331 Bluetooth control unit, 332 antenna unit, 341 transmitting side player, 342 receiving side Player

Claims (12)

An acquisition unit for acquiring management data used for managing the content data, including identification information of the content data;
A display unit that performs display based on the management data acquired by the acquisition unit;
A selection receiving unit for receiving selection of the content data by a selection operation for the display performed by the display unit;
An information processing apparatus comprising: a communication unit that transmits a request for the content data for which selection by the selection operation is received by the selection receiving unit, and receives the content data corresponding to the request. An imaging unit;
The information processing apparatus according to claim 1, wherein the acquisition unit is configured to acquire the management data from image data obtained by being imaged by the imaging unit. The information processing apparatus according to claim 2, wherein an image corresponding to the image data includes a QR code. Further equipped with a short-range communication unit,
The information processing apparatus according to any one of claims 1 to 3, wherein the acquisition unit is configured to acquire the management data via the short-range communication unit. The information processing apparatus according to claim 4, wherein the acquisition unit acquires the management data from an IC card via the short-range communication unit. A storage unit for storing the management data acquired by the acquisition unit;
The information processing apparatus according to claim 1, wherein the display unit is configured to perform display based on the management data stored in the storage unit. The storage unit further stores session connection information,
The communication unit establishes a session with another device using the session connection information, transmits the content data request to the other device, and receives the content data corresponding to the request. The information processing apparatus according to claim 6. The information processing apparatus according to claim 1, further comprising a reproduction unit that reproduces the content data received by the communication unit. The information processing apparatus according to claim 8, wherein the reproduction unit sequentially reproduces the content data. The information processing apparatus according to claim 1, wherein the information processing apparatus is an in-vehicle device. Including management data used for managing the content data, including identification information of the content data;
Display based on the acquired management data,
Accepting selection of the content data by a selection operation for the display;
Sending a request for the content data that has been accepted for selection by the selection operation;
An information processing method for receiving the content data corresponding to the request. Computer
An acquisition unit for acquiring management data used for managing the content data, including identification information of the content data;
A display unit that performs display based on the management data acquired by the acquisition unit;
A selection receiving unit for receiving selection of the content data by a selection operation for the display performed by the display unit;
A program for transmitting a request for the content data for which selection by the selection operation has been received by the selection receiving unit and for functioning as a communication unit for receiving the content data corresponding to the request.

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