JP2012008616A - Terminal device, download method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve user convenience.SOLUTION: A terminal device downloads divided data obtained by dividing prescribed one piece of content data by sharing with at least one other terminal device. The terminal device downloads divided data divided by a dividing method which assigns in order continuous image information constituting the content data to each of two or more terminal devices including the terminal device and other terminal device.

Description

  The present invention relates to a terminal device, a download method, and a program.

  A service in which a wireless communication terminal downloads content such as video from a content site is widely known. However, in recent years, there has been a problem that network resources, time, and cost required for downloading increase as the resolution of content increases, the frame rate increases, or the time increases.

  As an example of a technique for improving the download efficiency, a technique described in Patent Document 1 can be cited. In this technique, a plurality of user terminals share and download a certain content. In this case, each user terminal exchanges the acquired divided data with another user terminal. Each user terminal then restores the original content by combining all the divided data. Here, the exchange of the divided data between the user terminals is performed via a short-range wireless communication network in which a communication fee is not substantially charged or a communication fee is lower than that of a wide area wireless communication network. Furthermore, in recent years, short-range wireless communication networks capable of high-speed communication have become widespread. Therefore, according to the above technique, it is possible to reduce the network resources, time, and cost required for downloading compared to the case where the same number of user terminals download the entire original content data.

  In Patent Document 2, one content is divided into a plurality of pieces and distributed in a plurality of content storage terminals, and the content request terminal receives each distributed content from these content storage terminals and combines them. Describe the technology to restore the original content.

JP 2002-132613 A Japanese Patent Laid-Open No. 2005-050267

  By the way, even if only divided data is reproduced in each user terminal, it is convenient if the entire content of the complete content can be grasped. For example, if the short-range wireless communication network becomes inoperable or the distance between user terminals is increased and the divided data cannot be exchanged (the full content cannot be restored), the user can By reproducing only the data, it is possible to grasp at least the entire content.

  Patent Document 1 describes that one content is divided, but does not assume that the divided data is combined and reproduced independently at each user terminal. In fact, Patent Document 1 does not mention at all how to divide the content so that the entire content can be grasped when it is reproduced independently without being combined.

  Also, in Patent Document 2, each content storage terminal that stores content in a distributed manner is not originally intended for reproduction. Therefore, Patent Document 2 does not have the concept of performing reproduction with distributed data alone.

  An object of this invention is to provide the terminal device, the download method, and program which can improve a user's convenience.

  The terminal device according to the present invention is a terminal device that shares and downloads divided data obtained by dividing predetermined one piece of content data with at least one other terminal device, and the continuous image information constituting the content data is The divided data divided by the division method that sequentially assigns to two or more terminal devices including the terminal device and the other terminal device is downloaded.

  The download method of the present invention is a download method in a terminal device that downloads divided data obtained by dividing predetermined one piece of content data with at least one other terminal device, and is a continuous method that forms the content data. The divided data divided by the division method that sequentially assigns image information to two or more terminal devices including the terminal device and the other terminal device is downloaded.

  Further, the program of the present invention provides a computer of a terminal device that shares and downloads divided data obtained by dividing predetermined one piece of content data with at least one other terminal device, continuous image information constituting the content data, A process of downloading divided data divided by a division method that sequentially assigns two or more terminal devices including the terminal device and the other terminal device is executed.

  According to the present invention, it is possible to improve user convenience.

It is a block diagram for demonstrating the structural example of the terminal device which concerns on the 1st Embodiment of this invention. It is a system block diagram for demonstrating the structural example of the radio | wireless communications system which concerns on the 2nd Embodiment of this invention. It is a block diagram for demonstrating the example of a structure of the self-terminal device which comprises the radio | wireless communications system shown in FIG. It is a flowchart for demonstrating the operation example of the own terminal device shown in FIG. It is a figure for demonstrating the division | segmentation method in 2nd Embodiment. It is a figure for demonstrating the division | segmentation method in 3rd Embodiment, Comprising: It is a figure which shows the mode of the pixel division in a certain frame data of full high-definition data. It is a figure for demonstrating the example of a frame structure of the three-dimensional content data of 4th Embodiment. It is a figure for demonstrating the division | segmentation method in 4th Embodiment.

[First Embodiment]
FIG. 1 is a block diagram for explaining a configuration example of a terminal apparatus 10 according to the first embodiment of the present invention. The terminal device 10 downloads divided data obtained by dividing predetermined one piece of content data by sharing with one or more other terminal devices 14. The terminal device 10 includes at least a download unit 12. The download unit 12 downloads the divided data divided by the division method that sequentially assigns the continuous image information constituting the content data to two or more terminal devices including the terminal device 10 and the other terminal device 14. To do.

  Further, the terminal device 10 acquires the divided data downloaded by the other terminal device 14 itself from the other terminal device 14 and combines the divided data and the divided data downloaded by the terminal device 10 itself to restore the original content. (Not shown in FIG. 1). Further, the terminal device 10 can have a function (not shown in FIG. 1) for reproducing the divided data downloaded from the content site 16 or the original content data restored by combining a plurality of divided data.

  Note that the exchange of divided data between the terminal device 10 and the other terminal device 14 does not incur a communication fee, or the short-range wireless communication network 18 that has a lower communication fee than the wide-area wireless communication network. Is done through. In this case, it is more preferable that the short-range wireless communication network 18 is a communication network capable of high-speed communication.

  In the first embodiment described above, the terminal device 10 downloads the divided data divided by the division method that sequentially assigns the continuous image information constituting the content data to each terminal device. In other words, the divided data is, for example, data thinned out in time, space, or dimension. Therefore, although this divided data is inferior to the original content data in terms of image quality, information sufficient to grasp the entire image of the content data is maintained. For example, if the content data is a movie, the user can grasp the overall story. Therefore, even when the divided data cannot be acquired from the other terminal device 14 for any reason (in other words, when the original content data cannot be restored), the user grasps at least the whole image of the content data. be able to. That is, the first embodiment can improve user convenience.

[Second Embodiment]
FIG. 2 is a system configuration diagram for explaining a configuration example of the radio communication system 20 according to the second embodiment of the present invention. The wireless communication system 20 includes a content site 22 that distributes predetermined content data such as moving images, a local terminal device 24, and at least one other terminal device 26.

  The own terminal device 24 downloads divided data (hereinafter referred to as first divided data) assigned to itself with respect to a certain piece of content data from the content site 22 via the wide area wireless communication network 30. On the other hand, the other terminal device 26 downloads the divided data allocated to itself with respect to the content data (hereinafter referred to as second divided data) from the content site 22 via the wide area wireless communication network 30. The first divided data and the second divided data are divided by sequentially assigning continuous image information constituting the content data to two or more terminal devices including the terminal device 24 and the other terminal device 26. This is divided data. Details of the division method will be described later.

  The own terminal device 24 acquires the second divided data from at least one other terminal device 26 via the short-range wireless communication network 32, and the second divided data and the first divided data downloaded by the own terminal device 24 itself. Combine the data and restore the original content data. Further, the terminal device 24 reproduces the original content data restored by combining the first divided data or a plurality of divided data (first divided data and one or more second divided data).

  Note that the short-range wireless communication network 32 is preferably a communication network that is substantially free of communication charges or cheaper than the wide-area wireless communication network 30. Furthermore, in this case, it is more preferable that the short-range wireless communication network 32 is a communication network capable of high-speed communication. An example of the wide area wireless communication network 30 is a cellular network. On the other hand, examples of the short-range wireless communication network 32 include a wireless LAN (Local Area Network), Blue Tooth, or TransferJet.

  FIG. 3 is a block diagram for explaining a configuration example of the terminal device 24 shown in FIG. The own terminal device 24 includes at least a content data determination unit 40, a division content determination unit 42, a content site interface unit 44, another terminal device interface unit 46, a combining unit 48, and a playback unit 50.

  The content data determination unit 40 determines content data to be obtained by sharing with the other terminal device 26. Determination of content data in the content data determination unit 40 is performed based on, for example, user input from an operation unit (not shown).

  The division content determination unit 42 determines the division content. The content of division refers to the number of other terminal devices 26 to share, the division type (for example, for each frame, for each pixel, for each eye data, etc.), and the division ratio (for example, equal division or non-uniform division). Here, the division content determination unit 42 divides the continuous image information constituting the content data by a division method that sequentially assigns to two or more terminal devices including the terminal device 24 and the other terminal device 26. . Here, the continuous image information is, for example, a frame data string that is continuous in the time direction, each pixel information that is continuous in the spatial direction in one frame data, or left-eye frame data and right-eye frame data in the time direction. It is a frame data sequence that includes alternately.

  The division content determination unit 42 generates “first division instruction information” including information about division data (that is, first division data) downloaded by the terminal device 24 and an instruction to obtain the information, and the content site interface unit 44. To notify. The division content determination unit 42 receives the “second division instruction information” including information on the division data (that is, second division data) downloaded by the other terminal device 26 and an instruction to obtain the information from the other terminal device interface unit. 46 is notified.

  In addition, the division content determination unit 42 transmits information about the division content (number of other terminal devices 26, division type, division ratio, etc.) (hereinafter, this may be referred to as “division content information”) to the combining unit 48. To notify.

  The content site interface unit 44 downloads the first divided data from the content site 22 via the wide area wireless communication network 30 based on the first division instruction information. The content site interface unit 44 outputs the downloaded first divided data to the combining unit 48.

  The other terminal device interface unit 46 notifies the second terminal device 26 of the second division instruction information via the short-range wireless communication network 32. The other terminal device 26 downloads the second divided data from the content site 22 via the wide area wireless communication network 30 based on the second division instruction information. The other terminal device interface unit 46 acquires the second divided data from the other terminal device 26 via the short-range wireless communication network 32. The other terminal device interface unit 46 outputs the acquired second divided data to the combining unit 48.

  The combining unit 48 combines the first divided data and the second divided data based on the divided content information notified from the divided content determining unit 42 to restore the original content data. The combining unit 48 outputs the restored original content data or first divided data to the reproducing unit 50.

  The reproducing unit 50 can reproduce the original content data and the first divided data that have been restored.

  FIG. 4 is a flowchart for explaining an operation example of the terminal device 24 shown in FIG. First, the content data determination unit 40 determines content data to be obtained by sharing with the other terminal device 26 (step S1). The division content determination unit 42 determines the division content of the content data determined to be obtained (step S2). In the case of the second embodiment, a case where content data including a frame data sequence (frame numbers = 1, 2, 3, 4, 5, 6... N) continuous in the time direction is taken as an example. For example, a case where content data of 60 fps (frame per second) is handled will be described as an example. Further, in the case of the second embodiment, an example is given in which the number of other terminal devices 26 to be shared is “1”, the division type is “frame unit”, and the division ratio is “equal”. In this case, the division content determination unit 42 assigns each frame data equally and sequentially to the terminal device 24 and one other terminal device 26.

  FIG. 5 is a diagram for explaining a division method according to the second embodiment. As shown in FIG. 5, in the case of the second embodiment, a frame data group of odd frame numbers (1, 3, 5,...) Is allocated to the first divided data, while the second divided data is assigned to the second divided data. Are assigned frame data groups with even frame numbers (2, 4, 6,...).

  Returning to the description of FIG. 4, the division content determination unit 42 notifies the terminal device 24 and the other terminal device 26 of the determined division content (step S <b> 3). Specifically, the division content determination unit 42 notifies the content site interface unit 44 of the first division instruction information (information that downloads an odd-numbered frame data sequence of content data determined to be acquired and an instruction to acquire them). . In addition, the division content determination unit 42 notifies the other terminal device interface unit 46 of the second division instruction information (information that downloads the even-numbered frame data string of the content data determined to be acquired and an instruction to acquire them). Furthermore, the division content determination unit 42 notifies the combination unit 48 of the division content information (number of other terminal devices 26 (for example, one), division type (for example, frame unit), and division ratio (for example, equality)). To do.

  Based on the first division instruction information, the content site interface unit 44 sends the first divided data (in the case of the second embodiment, 30 fps consisting of an odd frame data string) from the content site 22 via the wide area wireless communication network 30. Are divided data) (step S4).

  The other terminal device interface unit 46 receives at least one (one in the case of the second embodiment) from the other terminal device 26 and the second divided data (in the case of the second embodiment, 30 fps including an even frame data string). Is determined (step S5).

  When the second divided data can be acquired (Yes in step S5), the other terminal apparatus interface unit 46 outputs the acquired second divided data to the combining unit 48. The combining unit 48 combines the first divided data and the second divided data based on the divided content information, and restores the original content data (step S6). In the case of the present embodiment, specifically, the combining unit 48 alternately combines the first divided data that is the odd-numbered frame data sequence and the second divided data that is the even-numbered frame data sequence, so that the original content is obtained. Data (that is, 60 fps content data with frame numbers 1, 2, 3, 4, 5, 6,...) Is restored. The combining unit 48 outputs the restored original content data to the reproducing unit 50. The reproducing unit 50 reproduces the original content data input from the combining unit 48 (step S7).

  On the other hand, when the second divided data cannot be acquired for some reason (No determination in step S5), the combining unit 48 outputs only the first divided data to the reproducing unit 50. The reproducing unit 50 reproduces the first divided data alone (step S8). The reason why the second divided data cannot be acquired includes, for example, malfunction of the short-range wireless communication network 32, communication interruption due to an increase in the distance between terminal devices, and the like.

  In FIG. 4 described above, the download processing of the first divided data in step S4 and the acquisition processing of at least the second divided data in step S5 can be performed in parallel.

  In the second embodiment described above, the first divided data and the second divided data are obtained by transmitting the continuous image information constituting the content data to two or more terminal devices including the terminal device 24 and the other terminal device 26. On the other hand, it is the divided data divided by the division method assigned in order. Specifically, in the second embodiment, when processing content data including a continuous frame data sequence in the time direction, a division method that sequentially assigns each frame data to two or more terminal devices is adopted. To do. In other words, the first divided data and the second divided data are data thinned out in the time direction. Therefore, these pieces of divided data are inferior to the original content data in terms of image quality (in this case, smoothness of movement), but information sufficient to grasp the entire image of the content data is maintained. For example, if the content data is a movie, the user can grasp the overall story. This is particularly effective when the second divided data cannot be acquired from the other terminal device 26 for some reason (in other words, when the original content data cannot be restored). That is, the second embodiment can improve user convenience.

  Of course, in the second embodiment, when the second divided data can be normally acquired from the other terminal device 26, the following effects are obtained. That is, content data with the same quality as the original content data while reducing the network resources, time, and cost required for downloading compared to the case where the same number of terminal devices download each content data as a whole. Can be played.

  In the second embodiment described above, the number of other terminal devices 26 is not limited to one, and may be two or more. For example, a case where the number of the other terminal devices 26 is two (that is, a case where a total of three terminals are shared) is described. In this case, for example, a frame data string of 20 fps with frame numbers = 1, 4, 7,. Further, a 20 fps frame data sequence with frame numbers = 2, 5, 8,... Is assigned to the first other terminal device 26, and a 20 fps frame data sequence with frame numbers = 3, 6, 9,. It can be assigned to the second other terminal device 26.

[Third Embodiment]
The difference of the third embodiment from the second embodiment is that the content of division is different. Specifically, in the case of the third embodiment, an example is given in which the number of other terminal devices 26 to be shared is “3”, the division type is “pixel unit”, and the division ratio is “equal”. . In the third embodiment, it is assumed that full high-definition data having a resolution of 1920 × 1080 pixels is handled. Note that full high-definition data is composed of frame data sequences that are continuous in the time direction.

  In addition, since the structure of the radio | wireless communications system of 3rd Embodiment and the structure of an own terminal device are the same as 2nd Embodiment, it abbreviate | omits about those description. Further, the basic operation of the own terminal device is the same as the operation shown in the flowchart of FIG.

  FIG. 6 is a diagram for explaining a division method according to the third embodiment, and is a diagram illustrating a state of pixel division in certain frame data of full high-definition data. In the case of the third embodiment, as described above, the number of other terminal devices 26 to be shared is three. Therefore, when the own terminal device 24 is combined, a total of four terminal devices share the download. In FIG. 6, a pixel assigned to the terminal device 24 is indicated by A (pixel constituting the first divided data). Further, in FIG. 6, pixels assigned to the first to third other terminal devices 26 are respectively indicated by B, C, and D (pixels constituting the second divided data).

  That is, in the case of the third embodiment, as shown in FIG. 6, “odd row / odd column” pixels A are allocated to the terminal device 24. The first other terminal device 26 is assigned the pixel B of “odd row / even column”. The second other terminal device 26 is assigned with pixels C of “even rows / odd columns”. The third other terminal device 26 is assigned with pixels D of “even rows / even columns”. In short, each terminal device downloads data having a resolution of 960 × 540 pixels. The own terminal device 24 acquires each second divided data from the first to third other terminal devices 26 and alternately combines them in the frame, thereby obtaining the original full high-definition data (data of 1920 × 1080 pixels). ) To restore and play. In addition, the terminal device 24 can also independently reproduce the first divided data (a frame data string of only pixels in “odd row / odd column”).

  In the third embodiment described above, the first divided data and the second divided data are obtained by transmitting continuous image information constituting content data to two or more terminal devices including the terminal device 24 and the other terminal device 26. On the other hand, it is the divided data divided by the division method assigned in order. Specifically, in the third embodiment, a division method that sequentially assigns each piece of pixel information in the spatial direction within one frame data to two or more terminal devices is employed. That is, the first divided data and the second divided data are data thinned out in the spatial direction. Accordingly, these pieces of divided data are inferior to the original content data in terms of image quality (in this case, resolution), but information sufficient to grasp the entire image of the content data is maintained. Therefore, for example, when the content data is a movie, the user can grasp the overall story. This is particularly effective when the second divided data cannot be acquired from the other terminal device 26 for some reason (in other words, when the original content data cannot be restored). That is, the third embodiment can improve user convenience.

  In the third embodiment described above, the pixel unit division method is not limited to the above-described division method. For example, a dividing method for sequentially assigning “row direction pixel information” in one frame data to two or more terminal devices, or a dividing method for sequentially assigning “column direction pixel information” in one frame data It can also be adopted.

  In the third embodiment described above, the number of other terminal devices 26 is not limited to three, and may be one, two, or four or more.

[Fourth Embodiment]
The difference of the fourth embodiment from the second embodiment is that the content of division is different. Specifically, in the case of the fourth embodiment, for example, the number of other terminal devices 26 to be shared is “1”, the division type is “each eye data”, and the division ratio is “equal”. I will give you. Further, in the fourth embodiment, an example is given in which three-dimensional content data including a frame data sequence including left-eye frame data and right-eye frame data alternately in the time direction is handled.

  FIG. 7 is a diagram for explaining a frame configuration example of the three-dimensional content data. The content data includes, for example, a first frame for the left eye (frame number = 1), a first frame for the right eye (frame number = 2), a second frame for the left eye (frame number = 3), and a second frame for the right eye (frame). Number = 4).

  In addition, since the structure of the radio | wireless communications system of 4th Embodiment and the structure of an own terminal device are the same as 2nd Embodiment, those description is abbreviate | omitted. Further, the basic operation of the own terminal device is the same as the operation shown in the flowchart of FIG.

  FIG. 8 is a diagram for explaining a division method according to the fourth embodiment. As shown in FIG. 8, in the case of the fourth embodiment, a left-eye frame data sequence (frame number = 1, 3,...) Is assigned to the first divided data, while the second divided data is assigned to the second divided data. Are assigned a frame data sequence for right eye (frame number = 2, 4,...).

  The own terminal device 24 acquires the second divided data (right-eye frame data sequence) from the other terminal device 26, and combines the first divided data (left-eye frame data sequence) with the original three-dimensional content data. Can be restored and played. In addition, the terminal device 24 can also reproduce the first divided data independently.

  In the fourth embodiment described above, the first divided data and the second divided data are obtained by transmitting continuous image information constituting the content data to two or more terminal devices including the terminal device 24 and the other terminal device 26. On the other hand, it is the divided data divided by the division method assigned in order. Specifically, in the fourth embodiment, the right-eye frame data sequence constituting the 3D content data is assigned to one terminal device, and the left eye constituting the 3D content data is assigned to the other terminal device. A division method for assigning frame data sequences is adopted. In other words, the first divided data and the second divided data are data thinned out dimensionally. Therefore, these divided data are inferior to the original content data in terms of image quality (in this case, the three-dimensional image becomes a two-dimensional image), but information sufficient for grasping the whole image of the content data. Is maintained. Therefore, for example, when the content data is a movie, the user can grasp the overall story. This is particularly effective when the second divided data cannot be acquired from the other terminal device 26 for some reason (in other words, when the original content data cannot be restored). That is, the fourth embodiment can improve user convenience.

  In the fourth embodiment described above, the number of other terminal devices 26 is not limited to one, and can be two or more. For example, a case where the number of the other terminal devices 26 is two (that is, a case where a total of three terminals are shared) will be described. In this case, the left-eye frame data string (in the case of FIG. 8, frame numbers = 1, 3, 5,...) Is assigned to the terminal device 24, and the odd-numbered frame data string (of FIG. 8) Frame number = 2, 6... Is assigned to the first other terminal device 26, and the even-numbered frame data sequence (in the case of FIG. 8, frame numbers = 4, 8,...) Is assigned to the first other terminal device 26. ) Can be assigned to the second other terminal device 26.

  In the second to fourth embodiments described above, the division ratio in the divided contents is not limited to “equal”, but may be “uneven”. That is, based on a predetermined index (for example, network performance of each terminal device, current traffic, QoS (Quality of Service), etc.), the amount of information to be allocated (the number of frames or the number of pixels) may be different for each terminal device. it can. For example, the division ratio to the own terminal device 24 having high network performance can be increased (for example, 75%), while the division ratio to the other terminal device 26 having inferior network performance can be decreased (for example, 25%). .

  In the second to fourth embodiments described above, the “number of other terminal devices 26 to be shared” can be arbitrarily set or sequentially changed. For example, it can always be a predetermined number (only designated terminal devices), or all other terminal devices 26 for which authentication (also called pairing) has been completed. Furthermore, it can also be limited to the other terminal devices 26 existing within a predetermined range (in other words, in the vicinity of the own terminal device 24) among the other terminal devices 26 that have been authenticated.

  The embodiment described above can be controlled and operated by a computer circuit (for example, a CPU (Central Processing Unit)) (not shown) based on a control program. In such a case, these control programs are stored in, for example, a storage medium (for example, a ROM (Read Only Memory) or a hard disk) or an external storage medium (for example, a removable medium or a removable disk). And read and executed by the computer circuit.

DESCRIPTION OF SYMBOLS 10 Terminal device 12 Download part 14 Other terminal device 16 Content site 18 Short-range wireless communication network 20 Wireless communication system 22 Content site 24 Self-terminal device 26 Other terminal device 30 Wide area wireless communication network 32 Short-range wireless communication network 40 Content data determination part 42 Division Content Determination Unit 44 Content Site Interface Unit 46 Other Terminal Device Interface Unit 48 Coupling Unit 50 Playback Unit

Claims (9)

A terminal device that shares and downloads divided data obtained by dividing predetermined one piece of content data with at least one other terminal device,
Downloading divided data divided by a division method that sequentially assigns continuous image information constituting the content data to two or more terminal devices including the terminal device and the other terminal device, Terminal device to do.   The content data is composed of a frame data sequence that is continuous in the time direction, and the division method is a division that sequentially assigns each frame data to two or more terminal devices including the terminal device and the other terminal device. The terminal device according to claim 1, wherein the terminal device is a method.   The content data is composed of a frame data sequence that is continuous in the time direction, and the dividing method is performed in a spatial direction within one frame data for two or more terminal devices including the terminal device and the other terminal device. The terminal device according to claim 1, wherein the terminal device is a division method that sequentially assigns each piece of pixel information.   The content data is three-dimensional data composed of a frame data sequence including left-eye frame data and right-eye frame data alternately in a time direction, and the division method includes the terminal device and the other terminal device. The terminal apparatus according to claim 1, wherein the terminal device is a division method in which the left-eye frame data sequence is assigned to any one of the two, and the right-eye frame data sequence is assigned to the other.   The terminal device according to any one of claims 2 to 4, wherein a division ratio with respect to the own terminal device and the other terminal device is changed according to a predetermined condition.   6. The terminal device according to claim 5, wherein the predetermined condition is at least one of network performance of each terminal device, current traffic, and QoS (Quality of Service).   The terminal device according to any one of claims 1 to 6, wherein the other terminal device sharing the download is another terminal device that has been authenticated (paired). A download method in a terminal device that shares and downloads divided data obtained by dividing predetermined content data with at least one other terminal device,
Downloading divided data divided by a division method that sequentially assigns continuous image information constituting the content data to two or more terminal devices including the terminal device and the other terminal device, How to download. The divided data obtained by dividing the predetermined one piece of content data is shared with at least one other terminal device and downloaded to the computer of the terminal device.
Executing a process of downloading divided data divided by a division method that sequentially assigns continuous image information constituting the content data to two or more terminal devices including the terminal device and the other terminal device A program characterized by that.

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