JP2007013704A - Data sharing system, controller terminal, player terminal, data sharing simultaneous reproduction method, and data sharing simultaneous reproduction program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology whereby a plurality of terminals can share content data and simultaneously reproduce shared data. <P>SOLUTION: A controller terminal 2 requests player terminals 3, 4 to transmit a data list PDL consistent with a prescribed condition associated with content data possessed by the player terminals 3, 4, generates a reproduction data order list PDL for reproducing the content data possessed by the controller terminal 2 and the content data possessed by the player terminals 3, 4 on the basis of the data lists PDLs respectively received from the player terminals 3, 4 in a prescribed order, and allows the controller terminal 2 and the player terminals 3, 4 to simultaneously reproduce the content data listed up on the reproduction data order list PDL in the prescribed order so as to share the content data listed up among the controller terminal 2 and the player terminals 3, 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data sharing system, a controller terminal, a player terminal, a data sharing simultaneous reproduction method, and a data sharing simultaneous reproduction program. For example, when an ad hoc network is formed between a plurality of portable terminals, the plurality of portable terminals This is suitable for the case where content data owned by each person is shared and reproduced simultaneously.

  2. Description of the Related Art Conventionally, a wireless communication environment called a so-called ad hoc network in which a plurality of portable terminals existing in the same space can form a local network and perform wireless communication with each other is increasing. Communication tools that require real-time performance to some extent are often used between groups formed by this type of ad hoc network.

Also, in order to play back the same program simultaneously between multiple mobile terminals, schedule information (program guide) is created, and the internal clock is matched with the time information obtained from an NTP (Network Time Protocol) server, etc. There is an information reproduction method in which schedule information is distributed to all and the same program is reproduced at the same time (for example, see Patent Document 1).
JP2002-21877

  By the way, in the information reproduction method described above, it is possible to perform data sharing in such a manner that still image data owned by each mobile terminal is simultaneously reproduced in the order of shooting location and shooting date and time between groups formed by an ad hoc network. There was a problem that it was not possible and was not easy to use.

  The present invention has been made in consideration of the above points, and is an easy-to-use data sharing system, controller terminal, player terminal, and data sharing simultaneous that can share and reproduce content data among a plurality of terminals. A reproduction method and a data sharing simultaneous reproduction program are proposed.

  In order to solve such a problem, the present invention provides a data sharing system for sharing content data between a controller terminal and a plurality of player terminals connected to a network, the controller terminal being connected to a plurality of player terminals. On the other hand, a request is made for a data list that matches a predetermined condition with respect to content data owned by the player terminal itself, and the player terminal generates a data list that meets the condition in response to a request from the controller terminal. The controller terminal transmits the content data owned by the controller terminal itself and the content data owned by the player terminal in a predetermined order based on the data list received from each of the plurality of player terminals. Playback data order And the content data listed in the reproduction data order list is simultaneously reproduced by the controller terminal and the plurality of player terminals in a predetermined order so that the content data is shared between the controller terminal and the plurality of player terminals. Like that.

  Accordingly, in the present invention, the content data that each terminal has individually is shared between the controller terminal and the plurality of player terminals, and the content data is simultaneously reproduced on the controller terminal and the plurality of player terminals according to the reproduction data order list generated by the controller terminal. Therefore, the content data not owned by the controller terminal or the plurality of player terminals can be reproduced at the same timing as other terminals as if they were owned by the controller terminal or the plurality of player terminals.

  Also, in the present invention, a controller terminal that mutually shares content data with a plurality of player terminals connected to a network, and for the plurality of player terminals, a predetermined condition regarding the content data owned by the player terminal itself Data list requesting means for generating and transmitting a data list request command that matches the data list, and reception for receiving from each of the plurality of player terminals data lists that match the conditions generated by the player terminal in response to the request command from the controller terminal Based on the means and the data list received from each of the plurality of player terminals, a reproduction data order list for reproducing the content data owned by the controller terminal itself and the content data owned by the player terminal in a predetermined order is generated. Playback data order list raw And a reproduction control means for simultaneously reproducing the content data listed in the reproduction data order list by the controller terminal and the plurality of player terminals in a predetermined order so as to be shared between the controller terminal and the plurality of player terminals. And so on.

  Accordingly, in the present invention, the content data that each terminal has individually is shared between the controller terminal and the plurality of player terminals, and the content data is simultaneously reproduced on the controller terminal and the plurality of player terminals according to the reproduction data order list generated by the controller terminal. Therefore, the content data not owned by the controller terminal or the plurality of player terminals can be reproduced at the same timing as other terminals as if they were owned by the controller terminal or the plurality of player terminals.

  Furthermore, in the present invention, a player terminal that mutually shares content data with a controller terminal connected to a network, and the player terminal itself is responsive to a request command with a predetermined condition from the controller terminal. Data list generation means for generating a data list that matches a predetermined condition with respect to the content data owned and transmitting the data list to the controller terminal, and content data owned by the controller terminal based on the data list received from the plurality of player terminals by the controller terminal And the content data owned by the plurality of player terminals themselves according to the reproduction data order list generated for reproducing in a predetermined order, the content data is shared between the controller terminal and the plurality of player terminal devices. To controller terminal To be provided with reproduction means for simultaneous reproduction in a predetermined order as the controller terminal and a plurality of player terminals based on control by.

  Accordingly, in the present invention, the content data that each terminal individually has in the controller terminal and the plurality of player terminals is shared, and the content data is simultaneously reproduced on the controller terminal and the plurality of player terminals according to the reproduction data order list generated by the controller terminal. Therefore, the content data not owned by the controller terminal or the plurality of player terminals can be reproduced at the same timing as other terminals as if they were owned by the controller terminal or the plurality of player terminals.

  According to the present invention, content data individually owned by each terminal is shared between the controller terminal and the plurality of player terminals, and the content data is simultaneously reproduced on the controller terminal and the plurality of player terminals according to the reproduction data order list generated by the controller terminal. Therefore, the content data that the controller terminal or the plurality of player terminals do not own can be reproduced at the same timing as other terminals as if they were owned by itself, and thus a plurality of contents data can be reproduced. It is possible to realize a data sharing system, a controller terminal, a player terminal, a data sharing simultaneous playback method and a data sharing simultaneous playback program that can share content data between terminals and play back simultaneously. .

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Data sharing simultaneous reproduction system In FIG. 1, reference numeral 1 denotes a data sharing simultaneous reproduction system for constructing an ad hoc network as a whole, a PDA (Personal Digital Assistant) 2 as a controller terminal, and a mobile phone 3 as a player terminal. And the digital camera 4 have wireless communication functions such as IEEE (Institute of Electrical and Electronics Engineers) 802.11g and Bluetooth (registered trademark), and connect to each other via the wireless communication function to establish an ad hoc network. Has been made to build.

  Here, in the data sharing simultaneous reproduction system 1, the PDA 2, the mobile phone 3, and the digital camera 4 individually have different still image data files as content data, and the group that forms the ad hoc network. These still image data files are shared in the PDA 2, the mobile phone 3, and the digital camera 4 so that all the still image data files can be reproduced simultaneously.

  In this case, the PDA 2 that is a controller terminal is configured to give a command for causing the mobile phone 3 and the digital camera 4 that are player terminals to simultaneously reproduce the still image data file, and is also a player terminal. The cellular phone 3 and the digital camera 4 are adapted to simultaneously reproduce the still image data file between the PDA 2, the cellular phone 3 and the digital camera 4 in accordance with a command from the PDA 2 which is a controller terminal.

  In the data sharing simultaneous reproduction system 1, the content data to be shared is not a still image data file, but various other content data such as an audio file, a text file, a moving image data file, or a game program. Can be subject to data sharing.

  In this data sharing simultaneous reproduction system 1, the PDA 2 plays the role of a controller terminal, and the mobile phone 3 and the digital camera 4 play the role of a player terminal, but the PDA 2, the mobile phone 3 and the digital camera 4 It is possible to freely select which of them plays the role of a controller terminal according to the intention of each user.

  Here, as shown in FIG. 2, the PDA 2, the mobile phone 3, and the digital camera 4 have file names IMG_A01, IMG_A02,..., IMG_B01, IMG_B02,. , IMG_C02,..., ZGB1, ZGB2,..., ZGC1, ZGC2,.

  The attribute information ZGA, ZGB, and ZGC do not necessarily need to be associated with each still image data file. For example, the attribute information element related to the shooting location is different for each directory in which the still image data file is recorded. The attribute information element may be associated with each still image data file.

  The attribute information ZGA, ZGB, and ZGC includes not only basic information such as shooting location and shooting date and time as attribute information elements but also various information such as data size and resolution of still image data files as attribute information elements. Can be mentioned.

  The PDA 2 that is the controller terminal generates a request for creating a “reproduction data list” of the still image data file that it owns with respect to the mobile phone 3 and the digital camera 4 that are the player terminals, and transmits this.

  Here, the “reproduction data list” creation request includes conditions for the mobile phone 3 and the digital camera 4 to create a list. The condition is not limited to the keyword indicating the shooting location or the time range of the shooting date and time, but the range of data size and resolution in the still image data file is used. The shooting location is not limited to keywords, and may be information on latitude and longitude that can specify the shooting location acquired by GPS (Global Positioning System) or the like.

  When receiving the creation request from the PDA 2 that is the controller terminal, the cellular phone 3 that is the player terminal and the digital camera 4 receive attribute information ZGB and ZGC having attribute information elements that match the conditions included in the creation request, respectively. It is made to extract.

  Actually, as shown in FIG. 3, the PDA 2 which is the controller terminal first creates a “reproduction data list” including the conditions of the shooting location keyword “Hokkaido” and the shooting date and time range “2002.9.10-2002.9.15”. The request is transmitted to the mobile phone 3 and the digital camera 4 which are player terminals.

  When the mobile phone 3 as the player terminal receives the creation request from the PDA 2 as the controller terminal, the mobile phone 3 matches the shooting location keyword or shooting date / time range of the conditions included in the creation request among a plurality of still image data files owned by itself. For example, attribute information ZGB2, ZGB7, and ZGB12 having matching attribute information elements are extracted, and a reproduction data list PDL including the extracted attribute information ZGB2, ZGB7, and ZGB12 is created.

  Also in the digital camera 4 that is a player terminal, when a creation request is received from the PDA 2 that is a controller terminal, as in the case of the mobile phone 3, the condition included in the creation request among a plurality of still image data files owned by itself is received. The attribute information ZGC1, 2, etc. having attribute information elements that match the shooting location keyword and the shooting date / time range are extracted, and a reproduction data list PDL composed of the extracted attribute information ZGC1, 2, etc. is created.

  These reproduction data lists PDL are used for simultaneous reproduction by all of the PDA 2, the mobile phone 3, and the digital camera 4 among the still image data files owned by the mobile phone 3 and the digital camera 4 that are player terminals. This is a list of image data files.

  By the way, there are cases where such a reproduction data list PDL includes still image data files that the user does not want to reproduce simultaneously on the PDA 2, the mobile phone 3, and the digital camera 4.

  When the mobile phone 3 or the digital camera 4 that is a player terminal excludes such a still image file from the reproduction data list PDL, a private flag indicating that it is a private still image data file is set in advance, The still image file in which the non-public flag is set is not included in the reproduction data list PDL in advance.

  Further, as shown in FIG. 4, the cellular phone 3 or the digital camera 4 as the player terminal selects a reproduction data list for displaying a list of thumbnail images 10 to 12 of still image data files that are list candidates when the reproduction data list PDL is created. By displaying the screen 13 on its own display, among the check items 14 to 16 provided next to the thumbnail images 10 to 12, for example, the thumbnail image 11 corresponding to the still image data file that is not desired to be included in the reproduction data list PDL. The check item 15 can be unchecked.

  That is, the cellular phone 3 and the digital camera 4 that are player terminals desire to include the check items 14 to 16 provided next to the thumbnail images 10 to 12 on the reproduction data list selection screen 13 in the reproduction data list PDL. For the thumbnail images 10 and 12 corresponding to the still image data file, the check items 14 and 16 are checked and can be selected as public data.

  The PDA 2 serving as the controller terminal receives the reproduction data list PDL created as described above from the mobile phone 3 and the digital camera 4, respectively, and based on the plurality of reproduction data lists PDL, the PDA 2, the mobile phone 3 and the digital camera For example, for the still image data file to be simultaneously reproduced in step 4, a simultaneous reproduction data order list SPDL determined in the order of reproduction in order of photographing time is generated.

  Incidentally, the PDA 2 which is a controller terminal is a case where information indicating the position such as latitude and longitude is described in the attribute information of the reproduction data list PDL received from the mobile phone 3 and the digital camera 4 which are player terminals. If it is determined that the attribute information belongs to an area of a certain range, a simultaneous reproduction data order list SPDL that is determined in order of reproduction in order of shooting time is generated for the still image data file, and the attribute information is not belonging to the area of the certain range. When it is determined, for example, the simultaneous reproduction data order list SPDL defined in the order of the shooting locations (for example, the order from north to south) can be generated.

  As shown in FIG. 5, the simultaneous playback data order list SPDL includes the “file name” of the still image data file to be played back simultaneously, and the “owner terminal name (mobile phone 3) of the owner who owns the still image data file. , PDA 2 and digital camera 4) ”,“ sender name ”serving as a distribution source (sender) for sending still image data files,“ master clock terminal serving as a source of master clock information for clock synchronization correction when performing simultaneous reproduction ” Name ”, attribute information elements“ shooting location ”,“ shooting time ”, and“ other information ”.

  By the way, the PDA 2 as the controller terminal receives the sender capability information indicating whether or not the mobile phone 3 and the digital camera 4 as the player terminals can be the distribution source of their own still image data file together with the reproduction data list PDL. The sender name of the simultaneous reproduction data order list SPDL is described based on the sender capability information.

  Accordingly, when the PDA 2 recognizes that the digital camera 4 has no sender capability based on the sender capability information from the mobile phone 3 and the digital camera 4, for example, the PDA 2, which is the controller terminal instead of the digital camera 4, is sent as the sender name. It is made to describe as a name. Incidentally, the “sender name” is not limited to the PDA 2, and the mobile phone 3 can be described as the sender name if there is a sender capability.

  The PDA 2 as the controller terminal includes still image data file list candidates having the same file name and the same attribute information in the reproduction data list PDL respectively received from the mobile phone 3 and the digital camera 4 as the player terminals. If the list candidates of still image data files having the same attribute information but different file names are included, if these list candidates are directly described in the simultaneous playback data order list SPDL, the simultaneous playback processing is performed. When executed, the same still image data file is reproduced repeatedly.

  Therefore, the PDA 2 serving as the controller terminal records only one list candidate of two still image data files having the same attribute information in the simultaneous reproduction data order list SPDL, thereby performing overlapping reproduction processing of still image data files having the same contents. Has been made to get around.

  At this time, the PDA 2 serving as the controller terminal has a still image data file having the same contents in addition to the still image data file having the file name described as the list candidate in the “other information” column in the simultaneous reproduction data order list SPDL. In addition, a message “Duplicate data exists” indicating that this is to be performed is also described.

  As a result, the mobile phone 3 and the digital camera 4 which are player terminals confirm the file name (C: IMG_C01) and the “duplicate” message described in the “other information” column in the simultaneous playback data order list SPDL. Thus, it can be recognized that there are other still image data files having the same contents.

  The PDA 2 as the controller terminal shares the still image data file with all of the PDA 2, the mobile phone 3 as the player terminal, and the digital camera 4 on the basis of the simultaneous playback data order list SPDL. The simultaneous reproduction method will be specifically described below.

(2) Data sharing simultaneous reproduction method In the data sharing simultaneous reproduction system 1, the data sharing simultaneous reproduction method in the case where the controller terminal itself plays the role of a sender serving as a distribution source of a still image data file when performing simultaneous reproduction. And a data sharing simultaneous reproduction method in the case where the owner terminal of the still image data file plays the role of the sender, and each will be described in turn.

  Here, the owner terminal is a portable terminal having a still image data file, and any of the PDA 2, the mobile phone 3, and the digital camera 4 can be the owner terminal.

(2-1) When the controller terminal plays the role of the sender As shown in FIGS. 6A and 6B, in the data sharing simultaneous reproduction system 1, when the PDA2 which is the controller terminal plays the role of the sender, The PDA 2 transmits a data transfer request of the still image data file corresponding to the first attribute information ZGB described in the simultaneous reproduction data order list SPDL as the first stage to the owner terminal (in this case, the mobile phone 3). .

  The mobile phone 3 which is the owner terminal that has received this data transfer request reads out the still image data file with the file name IMG designated by the data transfer request from the internal memory as a second stage, and reads it from the PDA 2 that is the controller terminal. Forward to.

  As a third step, the PDA 2 that is the controller terminal sends the still image data file that has received data transfer from the mobile phone 3 that is the owner terminal to each mobile terminal (in this case, the mobile phone 3 that is the owner terminal of the still image data file). Are transmitted to the remaining digital cameras 4).

  Then, as a fourth stage, the PDA 2 as the controller terminal sends a simultaneous playback start request (indicated by a thick arrow) to each mobile terminal (in this case, the PDA 2, the mobile phone 3 and the digital camera 4) as a signal for starting the simultaneous playback. By transmitting all at once, the PDA 2, the mobile phone 3, and the digital camera 4 can perform simultaneous playback processing on the still image data file.

  In this case, when the PDA 2 as the controller terminal transmits the still image data file to each mobile terminal, the mobile phone 3 as the owner terminal already has the still image data file, so it is not necessary to transmit ( Only the simultaneous playback start request (indicated by a thick arrow) needs to be transmitted.

  Incidentally, the PDA 2 which is a controller terminal transmits master clock information for clock synchronization correction to the mobile phone 3 and the digital camera 4 which are player terminals together with the simultaneous reproduction start request, whereby the mobile phone 3 and the digital camera 4 Even when the content data to be simultaneously reproduced is a moving image file, the reproduction timing can be matched with the PDA 2 that is the transmission source of the simultaneous reproduction start request and is also the controller terminal.

(2-2) When the owner terminal plays the role of the sender As shown in FIGS. 7A and 7B, in the data sharing simultaneous reproduction system 1, the role of the sender is changed to the owner terminal (PDA2, mobile phone 3 or digital When the camera 4) takes charge, the PDA 2 which is the controller terminal, as a first stage, the owner terminal (in this case, the portable terminal) of the still image data file corresponding to the first attribute information described in the simultaneous reproduction data order list SPDL. A simultaneous reproduction preparation request is generated and transmitted to the telephone 3).

  This simultaneous reproduction preparation request includes the file name of a still image data file to be reproduced and master clock information for clock synchronization correction.

  The mobile phone 3 of the owner terminal that is the sender of the still image data file that has received the simultaneous reproduction preparation request searches the attribute information ZGB of the still image data file from its “reproduction data list” and identifies the reproduction target.

  Then, as a second stage, the mobile phone 3 that is the owner terminal uses the still image data file specified by the attribute information ZGB, the PDA 2 that is the controller terminal that does not have the still image data file, and the digital camera 4 that is the player terminal. Delivered to.

  Subsequently, the cellular phone 3 as the owner terminal transmits the simultaneous reproduction start request (indicated by a thick arrow) and the master clock information for clock synchronization correction to the PDA 2 and the digital camera 4 at the same time as the third stage, whereby the PDA 2 The mobile phone 3 and the digital camera 4 can all perform simultaneous playback processing on the still image data file.

  Thereafter, in order to simultaneously reproduce the next still image data file on all of the PDA 2, the mobile phone 3 and the digital camera 4, the PDA 2 which is the controller terminal uses the still image corresponding to the next attribute information based on the simultaneous reproduction data order list SPDL. The simultaneous reproduction preparation request may be transmitted to the data file owner terminal.

  As described above, in the data sharing simultaneous reproduction system 1, the owner terminal is switched at any time and the simultaneous reproduction preparation request is transmitted in the same manner as described below, so that the still image data file owned by each of the PDA 2, the mobile phone 3 and the digital camera 4 can be obtained. And simultaneous playback processing can be executed.

  As described above, in the data sharing simultaneous playback system 1, when the owner terminal (PDA2, mobile phone 3 or digital camera 4) plays the role of the sender, the owner terminal that has received the simultaneous playback preparation request from the PDA2, which is the controller terminal, Since it is only necessary to distribute the still image data file owned by itself to other mobile terminals, it is necessary to perform a complicated process in which the PDA 2 which is the controller terminal once collects and distributes the still image data file owned by each owner terminal Instead, it is only necessary to transmit a simultaneous reproduction preparation request to each owner terminal based on the simultaneous reproduction data order list SPDL, and the processing load on the controller terminal can be remarkably reduced.

  In the data sharing simultaneous reproduction system 1, master clock information for clock synchronization correction is transmitted by the owner terminal serving as the sender, but the master clock information for master synchronization is based on the “master clock terminal name” in the simultaneous reproduction data order list SPDL. For example, the PDA 2 which is a controller terminal other than the owner terminal serving as the sender can transmit the clock information.

  Incidentally, when each mobile terminal plays back a still image data file sent from the owner terminal at the same time as another mobile terminal, it determines whether or not it owns the same still image data file as its own playback data list PDL. In addition, the determination is made based on the “duplicate” message described in the “other information” column of the simultaneous reproduction data order list SPDL, and when it is not possessed, it can be stored.

  Specifically, as shown in FIG. 8, each portable terminal displays a reproduction data storage selection GUI (Graphical User Interface) screen 14, along with a still image 15 based on the still image data file therein, and “this data is The message 16 “Not recorded in this unit” is displayed, and “YES” or “NO” is selected via the message “Do you want to save?”, So that the still image data file Can be saved.

  When each mobile terminal already has the same still image data file, a message 17 “This data is recorded in this unit” is displayed in the playback data storage selection screen 14 and “Save” is displayed. By selecting “YES” or “NO” via the message “Is it true?”, The user can also select the storage of duplicate still image data files.

(3) Circuit Configuration of Each Mobile Terminal Next, the circuit configurations of the PDA 2 that is the controller terminal, the mobile phone 3 that is the player terminal, and the digital camera 4 will be described. Here, according to the simultaneous playback data order list SPDL as described above. Since the circuit configuration necessary for performing the simultaneous reproduction process is common to each portable terminal, the circuit configuration of the common part will be described.

  As shown in FIG. 9, the portable terminal such as the PDA 2, the mobile phone 3, and the digital camera 4 has a network transmission / reception unit 22, an AV (Audio Visual), and a control unit 23 having a CPU (Central Processing Unit) configuration for overall control. A data management unit 24, a user input unit 26, an output management unit 27, and a display unit 28 such as an LCD (Liquid Crystal Display) are connected.

  The wireless communication interface 21 connected to the network transmission / reception unit 22 performs short-range wireless communication such as IEEE802.11g or Bluetooth (registered trademark) with other portable terminals. "List" creation request, simultaneous reproduction data order list SPDL, still image data file data transfer request and simultaneous reproduction preparation request, and still image data file exchange.

  The control unit 23 executes various processes and a data sharing simultaneous reproduction processing procedure to be described later based on the basic program and the data sharing simultaneous reproduction program read and expanded from the hard disk drive 25 via the AV data management unit 24. Has been made.

  Further, the control unit 23 sets the conditions in the “reproduction data list” creation request, the setting of the non-public flag, the selection of public data (FIG. 4), and the simultaneously reproduced still image via the user input unit 26 including buttons and a touch panel. The storage of the data file (FIG. 8), the simultaneous playback preparation request for the next still image data file are received, and various processes corresponding to them are executed.

  The request creation analysis unit 23A of the control unit 23 creates and manages various requests such as a “reproduction data list” creation request, a still image data file data transfer request, and a simultaneous reproduction preparation request, or performs analysis thereof. Has been made.

  The reproduction data list creation analysis unit 23B determines the conditions included in the “reproduction data list” creation request, creates a reproduction data list PDL based on the attribute information of the still image data file that matches the conditions, and manages it. Or perform an analysis thereof.

  The simultaneous playback data order list creation analysis unit 23C creates the simultaneous playback data order list SPDL by rearranging the attribute information of the playback data list PDL received from the player terminal in order of shooting date or time, or checking for duplication of attribute information. Manage, or analyze.

  The output management unit 27 is a decoder 27A for decoding the encoded still image data file, a RAM 27B used as a work area for temporarily storing the decoded still image data file, and a simultaneous playback between each portable terminal. A reproduction clock generation unit 27C for adjusting the reference time to the master clock information is provided, and the still image data file is displayed on the display unit 28 and various menus are displayed.

  The AV data management unit 24 is connected to the hard disk drive 25, and instructs the content data such as a still image data file, a moving image file, and a text data file stored in the hard disk drive 25 from the control unit 23. The still image data file received from other portable terminals is stored in the hard disk drive 25 in accordance with instructions from the user.

  As described above, the PDA 2 serving as the controller terminal, the mobile phone 3 serving as the player terminal, and the digital camera 4 basically have the common circuit configuration shown in FIG. 9 described above, and any of them may serve as the controller terminal. Is possible. However, since the simultaneous reproduction data order list creation analysis unit 23C of the control unit 23 is optional, if it is not possessed, the portable terminal cannot play the role of a controller terminal, and as a player terminal You can only play a role.

(4) Data sharing simultaneous reproduction processing procedure Subsequently, for the data sharing simultaneous reproduction method as shown in FIG. 6 and FIG. 7, the data sharing simultaneous reproduction processing in the case where the controller terminal plays the role of the sender. The sequence and the data sharing simultaneous playback processing sequence in the case where the owner terminal of the still image data file plays the role of the sender will be described separately.

  As shown in FIG. 10, in the data sharing simultaneous reproduction system 1, an exchange according to the following processing sequence is performed between the PDA 2 that is the controller terminal and the mobile phone 3 and the digital camera 4 that are the player terminals. ing.

  In step SP1, the PDA 2, which is the controller terminal, accepts a condition for simultaneously reproducing the still image data file input by the user, and proceeds to the next step SP2.

  In step SP2, the PDA 2 which is the controller terminal creates a “reproduction data list” creation request including the conditions accepted in step SP1, and moves to the next step SP3 to send a “reproduction data list” creation request at the player terminal. The data is transmitted to a certain mobile phone 3 and digital camera 4, and the process proceeds to the next step SP4.

  At this time, in step SP21, the cellular phone 3 and the digital camera 4 that are player terminals receive a “reproduction data list” creation request from the PDA 2 that is the controller terminal, and the process proceeds to the next step SP22.

  In step SP22, the cellular phone 3 and the digital camera 4 which are player terminals are unchecked in the non-public flag set in the non-public still image data file and the reproduction data list selection screen 13 (FIG. 4). The still image data file is removed from the reproduction data list candidates, and only the attribute information of the still image data file that matches the conditions is selected, and the process proceeds to the next step SP23.

  In step SP23, the cellular phone 3 and the digital camera 4 which are player terminals create a reproduction data list PDL based on the attribute information selected in step SP22, and the process proceeds to the next step SP24.

  In step SP24, the mobile phone 3 and the digital camera 4 that are player terminals determine whether or not they have the ability to become a sender from the relationship between the transfer speed when transmitting their own still image data files to other mobile terminals and the processing capacity. Then, the sender capability information indicating the presence / absence and the reproduction data list PDL created in step SP23 are transmitted to the PDA 2 which is the controller terminal, and the process proceeds to the next subroutine SRT25.

  On the other hand, in step SP4, the PDA 2 as the controller terminal receives the reproduction data list PDL and the sender capability information from the mobile phone 3 and the digital camera 4 as the player terminals, respectively, and proceeds to the next step SP5.

  In step SP5, the PDA2, which is the controller terminal, creates a simultaneous reproduction data order list SPDL in which attribute information included in the plurality of reproduction data lists PDL is rearranged in order of photographing time, and proceeds to the next step SP6.

  Here, when creating the simultaneous playback data order list SPDL, the PDA 2 as the controller terminal determines whether or not the player terminal can become a sender based on the sender ability information, and recognizes that the player terminal cannot become a sender. A portable terminal name (for example, PDA2) that can be a sender is described in “sender name” of the simultaneous reproduction data order list SPDL.

  The PDA 2 that is the controller terminal can create the simultaneous reproduction data order list SPDL according to the user's wishes (in order of photographing time) based on the reproduction data list PDL acquired from each player terminal by the processing so far.

  When the PDA 2 serving as the controller terminal in step SP6 recognizes that the simultaneous reproduction command according to the simultaneous reproduction data order list SPDL is given from the user, the process proceeds to the next step SP7.

  In step SP7, the PDA2 as the controller terminal selects a still image data file corresponding to the attribute information described in the simultaneous reproduction data order list SPDL, and proceeds to the next step SP8. Here, when the PDA 2 serving as the controller terminal first selects a still image data file according to the simultaneous reproduction data order list SPDL, the still image data file corresponding to the attribute information described first in the simultaneous reproduction data order list SPDL. The still image data file is selected according to the order of the attribute information.

  In step SP8, the PDA 2, which is the controller terminal, determines whether or not the sender that distributes the still image data file is itself. Here, the PDA 2 as the controller terminal determines whether or not it can become a sender in response to an operation on the user input unit 26.

  If an affirmative result is obtained in step SP8, this indicates that the PDA 2, which is the controller terminal, has been determined as the sender that distributes the still image data file in response to an operation on the user input unit 26. The PDA 2 that is the terminal moves to the next subroutine SRT9, and executes the simultaneous reproduction processing procedure when the sender is the controller terminal itself.

  On the other hand, if a negative result is obtained in step SP8, this indicates that the PDA2 which is the controller terminal is not the sender, but the owner terminal of the still image data file is determined as the sender. At this time, the PDA 2 which is the controller terminal moves to the subroutine SRT10 and executes the simultaneous reproduction processing procedure when the sender is the owner terminal.

  As shown in FIG. 11, in step SP31 of the subroutine SRT9, the PDA 2, which is a controller terminal, creates a data transfer request for a still image data file to be reproduced simultaneously according to the simultaneous reproduction data order list SPDL, and proceeds to the next step SP32.

  In step SP32, the PDA 2 serving as the controller terminal transmits the data transfer request created in step SP31 to the owner terminal of the still image data file, and proceeds to the next step SP33. Here, the owner terminal may be a player terminal or a controller terminal. Here, the case where the owner terminal is a player terminal will be described below.

  At this time, in step SP41, the owner terminal (for example, when the owner terminal for this still image data file is the mobile phone 3) receives the data transfer request transmitted in step SP32 earlier, and proceeds to the next step SP42.

  In step SP42, the owner terminal identifies the still image data file it owns according to the data transfer request received from the PDA 2 that is the controller terminal, reads it from the hard disk drive 25 by the AV data management unit 24, and proceeds to the next step SP43. After the read still image data file is transmitted to the PDA 2 as the controller terminal, the process proceeds to the next step SP44.

  At this time, the PDA 2 as the controller terminal receives the still image data file transferred from the owner terminal in step SP33, thereby acquiring the still image data file to be distributed to each player terminal, and proceeds to the next step SP34. Move.

  In step SP34, the PDA 2 serving as the controller terminal distributes the still image data file by transmitting it to each player terminal other than the controller terminal, and proceeds to the next step SP35. Incidentally, the PDA 2 which is the controller terminal has the owner terminal of the still image data file in advance, and therefore does not transmit the still image data file.

  At this time, each player terminal receives the still image data file from the PDA 2 as the controller terminal in step SP51 of the subroutine SRT25, and proceeds to the next step SP52.

  At this stage, the data sharing simultaneous reproduction system 1 has a still image data file to be reproduced at the same time for both the controller terminal and each player terminal, and is ready for simultaneous reproduction processing at any time.

  In step SP35, the PDA 2, which is the controller terminal, transmits a simultaneous playback start request to all player terminals including the owner terminal, so that the still image data file held in common by the PDA 2, the mobile phone 3, and the digital camera 4 is obtained. An instruction is given to start simultaneous reproduction at the same time, and the PDA 2 itself reproduces the still image data file at the same timing and displays it on the display unit 28 (FIG. 9), and returns to step SP11 (FIG. 10).

  At this time, the owner terminal receives the simultaneous playback start request transmitted from the PDA2 which is the controller terminal in step SP44, and proceeds to the next step SP45. At this time, the player terminal is transmitted from the PDA2 which is the controller terminal in step SP52. The simultaneous reproduction start request is received, and the process proceeds to the next step SP53.

  In step SP45, the owner terminal starts reproduction of the still image data file owned by the owner terminal according to the simultaneous reproduction start request received from the PDA 2 as the controller terminal, and returns to the next step SP26 (FIG. 10).

  In step SP53, similarly to the owner terminal, the player terminal starts playback of the still image data file distributed from the PDA2 as the controller terminal in accordance with the simultaneous playback start request received from the PDA2 as the controller terminal. Return to SP26 (FIG. 10).

  In step SP11, the PDA 2 serving as the controller terminal determines whether or not the simultaneous reproduction processing of all the still image data files listed in the simultaneous reproduction data order list SPDL has been completed.

  If a negative result is obtained here, this indicates that there is a still image data file that has not been subjected to simultaneous playback processing. At this time, the PDA 2 as the controller terminal returns to step SP6 to return to the next still image. A simultaneous playback command for the data file is received, and the same processing is repeated thereafter.

  On the other hand, if an affirmative result is obtained in step SP11, it means that the simultaneous reproduction processing has been completed for all the still image data files listed in the simultaneous reproduction data order list SPDL. The PDA 2 moves to the next step SP12 and ends the process.

  On the other hand, in step SP26, the player terminal (including the owner terminal) determines whether or not the simultaneous reproduction process for the still image data file has been completed, and if a negative result is obtained, the process returns to the subroutine SRT25 to perform the above-described process. On the other hand, if a positive result is obtained, the simultaneous reproduction process for the still image data file is completed, so the process proceeds to the next step SP27 and the process is terminated.

  By the way, when a negative result is obtained in step SP8, the process proceeds to the subroutine SRT10. As shown in FIG. 12, the PDA 2, which is the controller terminal, in step SP61, A simultaneous reproduction preparation request to be transmitted to the file owner terminal is created, and the process proceeds to the next step SP62.

  In step SP62, the PDA2, which is the controller terminal, transmits the simultaneous playback preparation request created in step SP61 to the owner terminal of the still image data file, thereby prompting the owner terminal to distribute the still image data file. Return to SP11 (FIG. 10).

  At this time, in step SP71, the owner terminal receives the simultaneous reproduction preparation request transmitted from the PDA 2 as the controller terminal, and proceeds to the next step SP72.

  In step SP72, the owner terminal specifies a still image data file possessed by the owner terminal itself in accordance with the simultaneous playback preparation request received from the PDA 2 as the controller terminal, reads it from the hard disk drive 25 by the AV data management unit 24, and The process proceeds to step SP73, and after the read still image data file is transferred to each player terminal (including the controller terminal), the process proceeds to the next step SP74.

  At this time, in step SP81, the player terminal receives the still image data file transferred from the owner terminal, and proceeds to the next step SP82.

  In step SP74, since the owner terminal has transferred the still image data file to each player terminal, the owner terminal creates a simultaneous playback start request for simultaneous playback on the PDA 2, the mobile phone 3, and the digital camera 4, and sends the request to each player terminal. In addition to the transmission, the reproduction of the still image data file possessed by the owner terminal itself is started according to the simultaneous reproduction start request, and the process returns to the next step SP11 (FIG. 10).

  In step SP11, the PDA 2 serving as the controller terminal determines whether or not the simultaneous reproduction processing of all the still image data files listed in the simultaneous reproduction data order list SPDL has been completed.

  If a negative result is obtained here, this indicates that there is a still image data file that has not been subjected to simultaneous playback processing. At this time, the PDA 2 as the controller terminal returns to step SP6 to return to the next still image. The simultaneous reproduction command for the data file is received, and the processing of the subroutine SRT10 is repeated thereafter.

  On the other hand, if an affirmative result is obtained in step SP11, it means that the simultaneous reproduction processing has been completed for all the still image data files listed in the simultaneous reproduction data order list SPDL. The PDA 2 moves to the next step SP12 and ends the process.

  In step SP82, the player terminal receives the simultaneous playback start request from the owner terminal. In step SP83, the player terminal starts playback of the still image data file received from the owner terminal using the simultaneous playback start request as a trigger, and proceeds to the next step SP26. Move.

  In step SP26, the player terminal (including the owner terminal) determines whether or not the simultaneous reproduction process for the still image data file has been completed. If a negative result is obtained, the process returns to the subroutine SRT25 and repeats the above-described process. On the other hand, if a positive result is obtained, the simultaneous reproduction process for the still image data file is completed, so the process proceeds to the next step SP27 and the process is terminated.

(5) Operation and Effect In the above configuration, in the data sharing simultaneous reproduction system 1, the PDA 2 that is the controller terminal acquires the reproduction data list PDL that meets certain conditions from the mobile phone 3 and the digital camera 4 that are the player terminals. Then, according to the simultaneous reproduction data order list SPDL created based on these reproduction data lists PDL, the same still image file data is shared and reproduced simultaneously by the PDA 2, the mobile phone 3, and the digital camera 4.

  At this time, in the data sharing simultaneous reproduction system 1, when the controller terminal itself becomes the sender, the controller terminal also receives the still image data file from the owner terminal, distributes it to the portable terminal that does not possess it, and then from the controller terminal By transmitting a simultaneous playback start request to the player terminal, the still image data file can be played back simultaneously between the controller terminal and the player terminal.

  Therefore, in the data sharing simultaneous reproduction system 1, a still image data file that is not owned by the controller terminal or a plurality of player terminals is simultaneously reproduced at the same timing as other portable terminals as if it were owned by itself. Can be processed.

  In this case, most of the player terminals are passive processes that receive the still image data file distributed from the controller terminal and wait for the simultaneous playback start request. Even if it is not, it is possible to share still image data files of other people who do not have in the group that constructs the ad hoc network.

  In the data sharing simultaneous reproduction system 1, when an owner terminal is a sender, a simultaneous reproduction preparation request is transmitted to the owner terminal that is the owner of the still image data file, and the still image data file is distributed and simultaneously reproduced to the owner terminal. By also entrusting the transmission of the start request, the simultaneous reproduction process can be executed while sequentially switching the sender to the still image data file owner terminal.

  In this case, the controller terminal does not require complicated processing such as receiving the still image data file from the owner terminal that is the owner of the still image data file and distributing it to a portable terminal that does not have it, and the processing burden is greatly increased. Will be reduced.

  Further, in the data sharing simultaneous reproduction system 1, when it is desired to exclude a specific still image data file from the reproduction data list PDL, a private flag is set for the still image data file, or a reproduction data list selection screen 13 is displayed. Since still image data files that are not desired to be included in the reproduction data list PDL can be excluded via (FIG. 4), privacy can be secured and unintentional leakage of personal information can be prevented.

  According to the above configuration, in the data sharing simultaneous reproduction system 1, a still image data file can be mutually transferred between a plurality of mobile terminals constituting an ad hoc network, shared, and simultaneously reproduced. Convenience by sharing a data file among a plurality of portable terminals can be provided, and usability can be further improved as compared with the conventional case.

(6) Other Embodiments In the above-described embodiment, the case where the present invention is applied to the data sharing simultaneous reproduction system 1 that constructs an ad hoc network has been described. However, the present invention is not limited to this. Instead, the present invention may be applied to a data sharing simultaneous reproduction system that constructs a so-called infrastructure network connected to each other via the Internet or the like.

  In the above-described embodiment, basic information such as the shooting location and shooting date, the data size and resolution of the still image data file, and the like are described as the target of the attribute information. However, the present invention is not limited to this, and various other metadata such as an environment at the time of shooting and a description of a shot image may be targeted.

  Further, in the above-described embodiment, the case where the simultaneous reproduction data order list SPDL is generated by rearranging the plurality of attribute information extracted from the plurality of reproduction data lists PDL in order of the shooting date and time has been described. However, the simultaneous reproduction data order list SPDL may be generated by rearranging by various other methods such as rearrangement for each shooting place.

  Further, in the above-described embodiment, the case where the control unit 23 of the PDA 2, the mobile phone 3, and the digital camera 4 executes the data sharing simultaneous reproduction processing procedure based on the data sharing simultaneous reproduction program has been described. However, the present invention is not limited to this, and various types such as a CD-ROM (Compact Disc-Read Only Memory), a DVD-ROM (Digital Versatile Disc-Read Only Memory), and a semiconductor memory in which a data sharing simultaneous reproduction program is stored. By installing the storage medium, the control unit 23 of the PDA 2, the mobile phone 3, and the digital camera 4 may execute the data sharing simultaneous reproduction processing procedure based on the data sharing simultaneous reproduction program.

  Further, in the above-described embodiment, the PDA 2 as the controller terminal is used as the control unit 23 as the data list request unit, the network transmission / reception unit 22 and the wireless interface 21 as the reception unit, the reproduction data order list generation unit and the reproduction control unit. Although the present invention is not limited to this, the present invention is not limited to this, and other various circuit configurations include data list requesting means, receiving means, reproduction data order list generating means, and reproduction control means. A controller terminal may be configured.

  Further, in the above-described embodiment, the mobile phone 3 and the digital camera 4 as the player terminal are configured by the control unit 23 as the data list generation unit, the control unit 23 as the playback unit, and the AV data management unit 24. However, the present invention is not limited to this, and the player terminal may be configured by data list generating means and reproducing means having various other circuit configurations.

  The data sharing system, controller terminal, player terminal, data sharing simultaneous reproduction method and data sharing simultaneous reproduction program of the present invention share content data among a plurality of personal computers connected to each other via the Internet, for example. However, it can be applied to the use of simultaneous reproduction.

It is a basic diagram which shows the whole structure of a data sharing simultaneous reproduction | regeneration system. It is an approximate line figure used for explanation of a still picture data file and its attribute information. It is an approximate line figure used for explanation of creation of a reproduction data list. It is a basic diagram which shows the reproduction | regeneration data list selection screen. It is a basic diagram which shows the structure of a simultaneous reproduction | regeneration data order list | wrist. It is a basic diagram with which it uses for description of the simultaneous reproduction | regeneration processing method in case the sender of simultaneous reproduction | regeneration is a controller terminal itself. It is a basic diagram with which it uses for description of the simultaneous reproduction | regeneration processing method in case the sender of simultaneous reproduction | regeneration is made into an owner terminal. It is a basic diagram which shows the reproduction | regeneration data preservation | save selection GUI screen. It is a basic block diagram which shows the circuit structure of a portable terminal. It is a sequence chart used for description of a data sharing simultaneous reproduction processing procedure. It is a sequence chart with which it uses for description of the simultaneous reproduction | regeneration processing procedure at the time of making a sender into a controller terminal itself. It is a sequence chart with which it uses for description of the simultaneous reproduction | regeneration processing procedure at the time of setting a sender as an owner terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Data sharing simultaneous reproduction system, 2 ... PDA, 3 ... Mobile phone, 4 ... Digital camera, 21 ... Wireless interface, 22 ... Network transmission / reception part, 23 ... Control part, 24 ... AV Data management section, 25... Hard disk drive, 26... User input section, 27.

Claims (36)

A data sharing system for sharing content data between a controller terminal and a plurality of player terminals connected to a network,
The controller terminal requests the plurality of player terminals for a data list that meets a predetermined condition regarding the content data owned by the player terminal itself,
The player terminal generates the data list that matches the condition in response to a request from the controller terminal, transmits the data list to the controller terminal,
The controller terminal reproduces the content data owned by the controller terminal itself and the content data owned by the player terminal in a predetermined order based on the data list respectively received from the plurality of player terminals. And generating the reproduction data order list and sharing the content data listed in the reproduction data order list between the controller terminal and the plurality of player terminals according to the predetermined order. A data sharing system characterized by simultaneous playback on multiple player terminals. The controller terminal receives the transfer of the content data owned by the plurality of player terminals, and transfers the content data received by the transfer and the content data owned by the controller terminal itself in the predetermined order. 2. The content data is simultaneously reproduced on the controller terminal and the plurality of player terminals by distributing to a plurality of player terminals and transmitting a simultaneous reproduction start command to the plurality of player terminals. Data sharing system. The controller terminal owns the content data in order to simultaneously reproduce the content data shared between the controller terminal and the plurality of player terminals on the controller terminal and the player terminal in the predetermined order. The controller terminal or the player terminal prepares simultaneous playback for distributing the content data to another terminal in the order according to the playback data order list, and transmits a simultaneous playback start command to the other terminal. The data sharing system according to claim 1, wherein the content data is reproduced simultaneously on the controller terminal and the plurality of player terminals. A controller terminal that shares content data with a plurality of player terminals connected to a network,
A data list requesting means for generating and transmitting a data list request command that matches a predetermined condition with respect to the content data owned by the player terminal to the plurality of player terminals;
Receiving means for receiving, from each of the plurality of player terminals, the data list that matches the condition generated by the player terminal in response to the request command from the controller terminal;
A reproduction data order list for reproducing the content data owned by the controller terminal itself and the content data owned by the player terminal in a predetermined order based on the data list respectively received from the plurality of player terminals. Replay data order list generating means for generating
Reproduction that is simultaneously reproduced by the controller terminal and the plurality of player terminals in the predetermined order so that the content data listed in the reproduction data order list is shared between the controller terminal and the plurality of player terminals. A controller terminal comprising: control means. The reproduction control means receives the transfer of the content data owned by the plurality of player terminals, and transmits the content data received by the transfer and the content data owned by the controller terminal itself in the predetermined order. 5. The content data is simultaneously reproduced on the controller terminal and the plurality of player terminals by distributing to a plurality of player terminals and transmitting a simultaneous reproduction start command to the plurality of player terminals. The controller terminal described. The reproduction control means owns the content data in order to simultaneously reproduce the content data shared between the controller terminal and the plurality of player terminals on the controller terminal and the player terminal in the predetermined order. The controller terminal or the player terminal is prepared for simultaneous playback to simultaneously distribute the content data to other terminals in the order according to the playback data order list, and a simultaneous playback start command is sent to the other playback terminal. 5. The controller terminal according to claim 4, wherein the content data is reproduced simultaneously on the controller terminal and the plurality of player terminals by transmitting to the terminal. The controller terminal according to claim 4, wherein the predetermined condition is a keyword related to a recording location where the content data is recorded. The controller terminal according to claim 4, wherein the predetermined condition is that the recording date and time of the content data is within a predetermined period range. The controller terminal according to claim 4, wherein the predetermined condition is that a data size of the content data is within a predetermined data size range. The controller terminal according to claim 4, wherein the predetermined condition is a resolution of the content data. The controller terminal according to claim 4, wherein the reproduction data order list generation unit generates the reproduction data order list by describing owner information of the content data. 5. The controller terminal according to claim 4, wherein the reproduction data order list generation unit generates the reproduction data order list by describing a file name and attribute information of the content data. The reproduction data order list generating means describes master clock information for clock synchronization correction for simultaneously reproducing the content data in the controller terminal and the plurality of player terminals in the predetermined order, thereby reproducing the reproduction data order. The controller terminal according to claim 4, wherein a list is generated. The controller terminal according to claim 4, wherein the reproduction data order list generation unit generates the reproduction data order list by rearranging list items for each recording location where the content data is recorded. 5. The controller terminal according to claim 4, wherein the reproduction data order list generation unit generates the reproduction data order list by rearranging the list items in order of recording date and time when the content data is recorded. The reproduction data order list generation means describes only one when the list items having the same file name and the same attribute information are duplicated in the data list respectively received from the plurality of player terminals. The controller terminal according to claim 4, wherein the reproduction data order list is generated by not. 17. The reproduction data order list generation unit generates the reproduction data order list by describing that the other list item is not described in association with the one list item. Controller terminal as described in. When the data list received from the plurality of player terminals includes list items having different file names but the same attribute information, the reproduction data order list generation unit describes only one of the data lists and The controller terminal according to claim 4, wherein the reproduction data order list is generated by not describing. 19. The reproduction data order list generation unit generates the reproduction data order list by describing that the other list item is not described in association with the one list item. Controller terminal as described in. When the reproduction data order list generating means includes duplicated list items of the content data similar to each other in the data list received from the player terminal, only one of them and not the other The controller terminal according to claim 4, wherein the reproduction data order list is generated by: 21. The reproduction data order list generation unit generates the reproduction data order list by describing that the other list item is not described in association with the one list item. Controller terminal as described in. 6. The controller terminal according to claim 5, wherein the reproduction control means also transmits master clock information for clock synchronization correction when transmitting the simultaneous reproduction start command to the plurality of player terminals. The reproduction control means continues to distribute the content data received from the plurality of player terminals and the content data owned by the controller terminal itself to the plurality of player terminals in the predetermined order. The controller terminal according to claim 5, wherein the controller terminal and the plurality of player terminals repeat the simultaneous reproduction of the content data. The reproduction control means also transmits master clock information for clock synchronization correction when the simultaneous reproduction preparation is performed or when the simultaneous reproduction start instruction is transmitted to the other terminal. The controller terminal according to claim 6. The reproduction control means sequentially switches the plurality of player terminals that perform simultaneous reproduction preparation for simultaneously distributing the content data to other terminals in the order according to the reproduction data order list, thereby the controller terminal The controller terminal according to claim 6, wherein the player terminal repeats simultaneous reproduction of the content data. A player terminal that shares content data with a controller terminal connected to a network,
Data list generating means for generating a data list that matches the predetermined condition with respect to the content data owned by the player terminal in response to a request command with a predetermined condition from the controller terminal, and transmitting the data list to the controller terminal When,
To reproduce the content data owned by the controller terminal and the content data owned by the plurality of player terminals in a predetermined order based on the data list received by the controller terminal from the plurality of player terminals. In accordance with the reproduction data order list generated at the same time, based on the control by the controller terminal so that the content data is shared between the controller terminal and the plurality of player terminal devices, the controller terminal and the plurality of A player terminal comprising: playback means for simultaneous playback on the player terminal. The data list generation means generates the data list that meets the predetermined condition without describing a list item for which a flag for preventing the data list from being set is set. The player terminal according to claim 26. 27. The data list generating means has a user interface for displaying the data list on a predetermined display means and allowing the user to select only the data list target from among the data list. Player terminal. When the data list is generated, the data list generation means displays a thumbnail image of the content data that is the target of the data list on a predetermined display means, and selects a list item to be described in the data list from among them The player terminal according to claim 26, further comprising a user interface. The player terminal
When the content data to be played back simultaneously on the controller terminal and the player terminal is received from another terminal, it is determined whether or not the same content data as the received content data is already owned. 27. The player terminal according to claim 26, further comprising control means for displaying on the display means. The player terminal according to claim 30, wherein the control means includes data storage means for storing the content data when it is determined that the same content data is not owned. The control means compares the attribute information of the received content data with the attribute information of the data list generated by itself when determining whether or not the same content data is already owned. 32. The player terminal according to claim 31, wherein: A data sharing simultaneous reproduction method performed by a controller terminal that mutually shares content data with a plurality of player terminals connected to a network,
A data list requesting step for generating and transmitting a data list request command that matches a predetermined condition with respect to the content data owned by the player terminal to the plurality of player terminals,
A receiving step of receiving from the plurality of player terminals, respectively, the data list that matches the condition generated by the player terminal in response to the request command;
A reproduction data order list for reproducing the content data owned by the controller terminal itself and the content data owned by the player terminal in a predetermined order based on the data list respectively received from the plurality of player terminals. A reproduction data order list generation step for generating
Reproduction that is simultaneously reproduced by the controller terminal and the plurality of player terminals in the predetermined order so that the content data listed in the reproduction data order list is shared between the controller terminal and the plurality of player terminals. A data sharing simultaneous reproduction method comprising: a control step. A data sharing simultaneous reproduction method performed by a player terminal that mutually shares content data with a network-connected controller terminal,
A data list generation step of generating a data list that matches the predetermined condition with respect to the content data owned by the player terminal and transmitting the data list to the controller terminal in response to a request command with a predetermined condition from the controller terminal When,
In order to reproduce the content data owned by the controller terminal and the content data owned by the plurality of player terminals in a predetermined order based on the data list received by the controller terminal from the plurality of player terminals. Based on the control by the controller terminal so as to share the content data between the controller terminal and the plurality of player terminals according to the generated reproduction data order list, the controller terminal and the plurality of players in the predetermined order. A data sharing simultaneous playback method comprising: a playback step for simultaneous playback on a terminal. For information processing equipment
A data list request step for generating and transmitting a data list request command that matches a predetermined condition with respect to content data owned by the player terminal to a plurality of player terminals connected to the network;
A receiving step of receiving from the plurality of player terminals, respectively, the data list that matches the condition generated by the player terminal in response to the request command;
Reproduction data order for reproducing the content data owned by the information processing apparatus itself and the content data owned by the player terminal in a predetermined order based on the data list respectively received from the plurality of player terminals. A playback data order list generation step for generating a list;
Simultaneous reproduction by the information processing apparatus and the plurality of player terminals in the predetermined order so that the content data listed in the reproduction data order list is shared between the information processing apparatus and the plurality of player terminals And a playback control step for executing a data sharing simultaneous playback program. For information processing equipment
In response to a request command with a predetermined condition from a controller terminal connected to the network, a data list that matches the predetermined condition is generated for the content data owned by the information processing apparatus itself and transmitted to the controller terminal. A data list generation step;
Based on the data list received by the controller terminal from the plurality of information processing devices, the content data owned by the controller terminal and the content data owned by the plurality of information processing devices themselves are reproduced in a predetermined order. In accordance with the reproduction data order list generated for the purpose, the content data is shared between the controller terminal and the plurality of information processing devices based on the control by the controller terminal according to the predetermined order and the controller terminal and A data sharing simultaneous reproduction program characterized by causing a plurality of information processing apparatuses to simultaneously reproduce.

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