JP6994013B2 - Video distribution system, video data distribution device, video data distribution device control program and video data distribution method - Google Patents

Description

The present invention relates to a video distribution system, a video data distribution device, a video data distribution device control program, and a video data distribution method.

Conventionally, a technique for distributing a large-capacity content such as a moving image to a terminal device is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-115440

Here, there is a need to deliver a large-capacity content specified by the terminal device. The high-quality moving image is, for example, a 4K image having 2160 pixels in the vertical direction and 3840 pixels in the horizontal direction.
However, when this high-quality moving image is distributed to a terminal device, the traffic flowing through the communication line for distribution becomes large, which may cause problems such as delay in information distribution and lack of information. Further, depending on the processing capacity of the terminal device, it is difficult to confirm and specify the content of the large-capacity content when designating the desired content.
Also, at sports venues, spectators watching the competition may not be able to see the movements of all the athletes. In this case, there is a desire to deliver a high-quality image of a player designated by the spectator on a terminal device owned by the spectator.

The present invention has been made in view of the above problems, and provides a video distribution system, a video data distribution device, a video data distribution device control program, and a video data distribution method capable of distributing a large amount of content to a terminal device. The purpose is to do.

(1) One aspect of the present invention is a video distribution system including a terminal device and a video data distribution device for distributing video data, wherein the terminal device is video data already distributed to its own device. The first video data is presented on an identification information output unit that outputs identification information indicating the first video data generated from the original video to the video data distribution device and a display unit included in the own device. Setting information output that is generated by operating the own device in the meantime and outputs setting information including presentation start position information indicating the presentation start position of the second video data in the original video to the video data distribution device. A unit and a video acquisition unit that acquires a second video data generated from the original video after the presentation start position, which is a video different from the first video data, from the video data distribution device. The video data distribution device includes an identification information acquisition unit that acquires the identification information output from the terminal device, a setting information acquisition unit that acquires the setting information output from the terminal device, and the identification information. The setting information includes a video output unit that outputs the second video data to the terminal device based on the identification information acquired by the acquisition unit and the setting information acquired by the setting information acquisition unit. The output unit outputs the setting information including the position information of the terminal device, and the video output unit outputs the second position where the position indicated by the position information of the terminal device included in the setting information is the viewpoint position. This is a video distribution system that outputs the video data of the above to the terminal device .

(2) One aspect of the present invention is an identification information acquisition unit that acquires identification information indicating first video data generated from the original video, which is video data delivered to the terminal device, and the terminal device. It is generated by operating the terminal device while the first video data is presented on the display unit, and includes presentation start position information indicating the presentation start position of the second video data in the original video. The video is different from the first video data based on the setting information acquisition unit for acquiring the setting information, the identification information acquired by the identification information acquisition unit, and the setting information acquired by the setting information acquisition unit. The setting information acquisition unit includes a video output unit that outputs the second video data generated from the original video after the presentation start position to the terminal device, and the setting information acquisition unit is the position information of the terminal device. The setting information including the above is acquired , and the video output unit transmits the second video data to the terminal device in which the position indicated by the position information of the terminal device included in the setting information is the viewpoint position. It is a video data distribution device that outputs .

(3) In one aspect of the present invention, in the video data distribution device according to (2) above, the operation of the setting information acquisition unit to specify the presentation start position of the second video data in the original video is detected. The setting information including the presentation start position information generated at that time may be acquired.

( 4 ) One aspect of the present invention is the setting corresponding to the second video data previously output to the terminal device in any one of the video data distribution devices (2) and (3) . Further, a storage unit that stores the information in a state of associating the information with the terminal identification information of the terminal device that has output the second video data in the past is further provided, and the video output unit is associated with the terminal identification information. When a distribution request for the second video data without the setting information is received from the terminal device, the setting information associated with the terminal identification information and stored in the storage unit is associated with the terminal identification information. The second video data may be output.

(5) One aspect of the present invention is an identification information acquisition function for acquiring identification information indicating first video data generated from an original video, which is video data delivered to a computer and a terminal device, and the above-mentioned. A presentation start position that is generated by operating the terminal device while the first video data is being presented on the display unit included in the terminal device and indicates a presentation start position of the second video data in the original video. The first video data is based on the setting information acquisition function for acquiring the setting information including the information, the identification information acquired by the identification information acquisition function, and the setting information acquired by the setting information acquisition function. Is a video data distribution device control program that realizes a video output function that outputs a second video data generated from the original video after the presentation start position to the terminal device. The setting information acquisition function acquires the setting information including the position information of the terminal device, and the video output function uses the position indicated by the position information of the terminal device included in the setting information as the viewpoint position. It is a video data distribution device control program that outputs the second video data to the terminal device .

(6) One aspect of the present invention is an identification information acquisition step of acquiring identification information indicating the first video data generated from the original video, which is video data delivered to the terminal device, and the terminal device. It is generated by operating the terminal device while the first video data is presented on the display unit, and includes presentation start position information indicating the presentation start position of the second video data in the original video. An image different from the first image data based on the setting information acquisition step for acquiring the setting information, the identification information acquired in the identification information acquisition step, and the setting information acquired in the setting information acquisition step. It is a video data distribution method including a video output step of outputting a second video data generated from the original video after the presentation start position to the terminal device, and is a setting information acquisition step. Acquires the setting information including the position information of the terminal device, and in the video output step, the second image in which the position indicated by the position information of the terminal device included in the setting information is the viewpoint position. This is a video data distribution method that outputs data to the terminal device .

( 7 ) One aspect of the present invention is an identification information output which is video data already distributed to the own device and outputs identification information indicating the first video data generated from the original video to the video data distribution device. A presentation indicating the presentation start position of the second video data in the original video, which is generated by operating the own device while the first video data is presented on the unit and the display unit included in the own device. The setting information output unit that outputs the setting information including the start position information to the video data distribution device and the video different from the first video data are generated from the original video after the presentation start position. The setting information output unit further includes at least one of player information, wireless communication type information, terminal information, and position information. It is a terminal device that outputs the setting information .

( 8 ) In one aspect of the present invention, in the terminal device described in ( 7 ) above, an operation of the setting information output unit to specify a presentation start position of the second video data in the original video is detected. The setting information including the presentation start position information generated at the time may be output.

( 9 ) One aspect of the present invention is an identification information output which is video data already distributed to the own device and outputs identification information indicating the first video data generated from the original video to the video data distribution device. A presentation indicating the presentation start position of the second video data in the original video, which is generated by operating the own device while the first video data is presented on the unit and the display unit included in the own device. The setting information output unit that outputs the setting information including the start position information to the video data distribution device and the video different from the first video data are generated from the original video after the presentation start position. When it is determined that the second video data is not stored in the storage unit provided with the video acquisition unit for acquiring the second video data from the video data distribution device, the second video The video data is notified to the user that the data distribution request is to be supplied to the video data distribution device, and only when the user approves, the second video data corresponding to the setting information is distributed to the own device. It is a terminal device required for the distribution device .

( 10 ) One aspect of the present invention is to output to the terminal device identification information indicating the first video data generated from the original video, which is the video data already distributed to the own device, to the video data distribution device. The identification information output function is generated by operating the own device while the first video data is being presented on the display unit of the own device, and the presentation of the second video data in the original video is started. The setting information output function for outputting the setting information including the presentation start position information indicating the position to the video data distribution device, and the video different from the first video data, the original after the presentation start position. It is a terminal device control program that realizes a video acquisition function of acquiring a second video data generated from a video from a video data distribution device, and the setting information output function includes player information, information on the type of wireless communication, and the like. It is a terminal device control program that outputs the setting information including at least one of terminal information and position information .

( 11 ) One aspect of the present invention is an identification information output which is video data already distributed to the own device and outputs identification information indicating the first video data generated from the original video to the video data distribution device. A presentation indicating a presentation start position of the second video data in the original video, which is generated by operating the own device while the first video data is presented on the step and the display unit provided in the own device. The setting information output step for outputting the setting information including the start position information to the video data distribution device and the video different from the first video data are generated from the original video after the presentation start position. A terminal control method including a video acquisition step of acquiring a second video data from a video data distribution device, wherein the setting information output step includes player information, wireless communication type information, terminal information, and position information. It is a terminal control method that outputs the setting information including at least one .
(12) One aspect of the present invention is to output to the terminal device identification information indicating the first video data generated from the original video, which is the video data already distributed to the own device, to the video data distribution device. The identification information output function is generated by operating the own device while the first video data is being presented on the display unit of the own device, and the presentation of the second video data in the original video is started. The setting information output function for outputting the setting information including the presentation start position information indicating the position to the video data distribution device, and the video different from the first video data, the original after the presentation start position. It is a terminal device control program that realizes a video acquisition function of acquiring second video data generated from video from a video data distribution device, and the second video data is stored in a storage unit included in the terminal device. If it is determined that the data is not present, the user is notified that the second video data distribution request is supplied to the video data distribution device, and only when the user approves, the second video data corresponding to the setting information is supported. It is a terminal device control program that further realizes the function of requesting the video data distribution device to distribute the video data of the above to the terminal device.
(13) One aspect of the present invention is identification information output which is video data already distributed to the own device and outputs identification information indicating the first video data generated from the original video to the video data distribution device. A presentation indicating a presentation start position of the second video data in the original video, which is generated by operating the own device while the first video data is presented on the step and the display unit provided in the own device. The setting information output step for outputting the setting information including the start position information to the video data distribution device and the video different from the first video data are generated from the original video after the presentation start position. This is a terminal control method including a video acquisition step of acquiring the second video data from the video data distribution device, and it is determined that the second video data is not stored in the storage unit provided in the own device. , Notifies the user that the second video data distribution request is to be supplied to the video data distribution device, and only when the user approves, the second video data corresponding to the setting information is sent to the own device. It is a terminal control method further including a step of requesting the video data distribution device to distribute.

According to the present invention, a video distribution system, a video data distribution device, a video data distribution device control program, a video data distribution method, a terminal device, a terminal device control program, and a terminal control method capable of distributing a large amount of content to a terminal device. Can be provided.

It is a figure which shows an example of the outline of the video distribution system of 1st Embodiment. It is a figure which shows an example of the functional structure of the video distribution system of this embodiment. It is a figure which shows an example of the identification information list. It is a figure which shows an example of the operation of the video distribution system of this embodiment. It is a figure which shows an example of the functional structure of the video distribution system of 2nd Embodiment. It is a figure which shows an example of the setting information. It is a figure which shows an example of the screen display used for generating the presentation start position information displayed on the display part. An example of the screen display used for generating the setting information displayed on the display unit is shown. It is a figure which shows an example of the functional structure of the video distribution system of 3rd Embodiment. It is a figure which shows an example of the image which sets the viewpoint information.

<First Embodiment>
Hereinafter, the communication system of the first embodiment will be described with reference to the drawings.
FIG. 1 is a diagram showing an example of an outline of the video distribution system 100 of the first embodiment.

<Overview of the system>
The video distribution system 100 includes a video data distribution device 3. The video data distribution device 3 is connected to the terminal device 2 via the network NW.
The video data distribution device 3 distributes the high-quality video data HM obtained by image processing the original video, which is the video data captured by the image pickup device, to the terminal device 2. The high-quality video data HM is an example of the second video data. In the following description, the original image will be described in the case of an image of a sports game.

The terminal device 2 is, for example, a smartphone or a tablet terminal, and includes a display unit 21 and an operation unit 22. The operation unit 22 is provided with, for example, a touch panel and is operated by the user of the terminal device 2. The display unit 21 includes, for example, a liquid crystal display and displays various images. The image displayed on the display unit 21 includes an image generated by the terminal device 2 based on the information distributed from the video data distribution device 3. Low image quality video data LM is stored in the terminal device 2 in advance. The low-quality video data LM is video data that has been distributed to the terminal device 2 and is video data generated from the original video. The low image quality video data LM is an example of the first video data. The low-quality video data LM is not limited to video data in which the image quality of the high-quality video data HM is reduced. The low-quality video data LM may be any video data generated from the original video. Further, the low image quality video data LM may be video data generated by the terminal device 2 based on the data generated from the original video by the video data distribution device 3.

Specifically, this low-quality video data LM is video data suitable for the processing speed of the terminal device 2. This low-quality video data LM includes, for example, a CG moving image generated from the original video. This CG moving image is composed of, for example, a combination of a large number of polygons (for example, polygons) generated based on the original image, and is further subjected to shading processing based on the direction of light rays and texture mapping of the polygon surface. It may be an image. In the following description, the moving image composed of the polygons will also be referred to as a polygon moving image.

Further, the polygon included in this polygon moving image is generated by image processing the image of the player captured in the original video OM. Specifically, it is based on model information obtained by modeling an image of a player by calculating the skeleton and the position of the center of gravity of the player by a known means.
The terminal device 2 generates a polygon moving image by giving motion information to this model information. The motion information is, for example, information generated by image processing an image of a player captured in the original video OM and distributed to the terminal device 2 in advance together with model information.

That is, the low-quality video data LM is video data in a form suitable for presentation by the terminal device 2. In other words, the low-quality video data LM is the polygon moving image data described above, and the high-quality video data HM data is data in an ordinary video format.

<Functional configuration of video distribution system 100>
Hereinafter, an example of a specific functional configuration of the video distribution system 100 will be described with reference to FIG. 2.
FIG. 2 is a diagram showing an example of the functional configuration of the video distribution system 100 of the present embodiment.

<Functional configuration of terminal device 2>
The terminal device 2 includes a storage unit 23 and a control unit 20 in addition to the display unit 21 and the operation unit 22 described above.
The storage unit 23 is composed of a non-volatile semiconductor memory or the like, and stores the above-mentioned low-quality video data LM.
The control unit 20 includes, for example, a CPU, and performs various operations and exchanges of information. The control unit 20 includes a video list generation unit 201, a presentation unit 202, an identification information generation unit 203, an identification information output unit 204, and a video acquisition unit 205 as its functional units. The control unit 20 detects a user's operation on the operation unit 22.

The video list generation unit 201 generates a video list. The video list is a list of low-quality video data LM titles and thumbnail images stored in the storage unit 23. The video list generation unit 201 causes the display unit 21 to display this video list. The user specifies the high-quality video data HM to be acquired by selecting the low-quality video data LM from this video list. The video list generation unit 201 detects a user's selection operation.
The video list generation unit 201 acquires the low-quality video data LM selected by the user from the storage unit 23. The video list generation unit 201 supplies the low image quality video data LM selected by the user to the presentation unit 202. The video list generation unit 201 supplies the low-quality video data LM selected by the user to the identification information generation unit 203.

The presentation unit 202 acquires the low-quality video data LM selected by the user from the video list generation unit 201. The presentation unit 202 causes the display unit 21 to display the low-quality video data LM acquired from the video list generation unit 201.
The identification information generation unit 203 acquires the low-quality video data LM selected by the user from the video list generation unit 201. The identification information generation unit 203 generates identification information indicating the low-quality video data LM selected by the user. This identification information is data included in the low-quality video data LM in advance. Specifically, the identification information is generated based on the file name of the low-quality video data LM, the attribute information of the low-quality video data LM, and the like. The identification information generation unit 203 supplies the generated identification information to the identification information output unit 204.

The identification information output unit 204 acquires identification information from the identification information generation unit 203. The identification information output unit 204 supplies the identification information acquired from the identification information generation unit 203 to the identification information acquisition unit 301.
The video acquisition unit 205 acquires high-quality video data HM corresponding to the low-quality video data LM selected by the user from the video data distribution device 3.

<Functional configuration of video data distribution device 3>
The video data distribution device 3 includes a control unit 30 and a storage unit 31. The storage unit 31 is composed of a non-volatile memory such as a hard disk drive or a ROM (Read-Only-memory).
The control unit 30 includes, for example, a CPU, and performs various operations and exchanges of information. The control unit 30 includes an identification information acquisition unit 301 and a video output unit 302 as its functional units.

The identification information acquisition unit 301 acquires the identification information output from the terminal device 2. As described above, the identification information is information indicating the low image quality video data LM selected by the user who operates the terminal device 2. The identification information acquisition unit 301 supplies the identification information acquired from the terminal device 2 to the video output unit 302.

The video output unit 302 outputs high-quality video data HM to the terminal device 2 based on the identification information acquired by the identification information acquisition unit 301. This high-quality video data HM is generated from the original video of the low-quality video data LM selected by the user. The high-quality video data HM is a video different from the low-quality video data LM selected by the user. The different images are, for example, images having different image quality. In this example, the high-quality video data HM is video data having a higher image quality than the low-quality video data LM.
The video output unit 302 is a high-quality video data HM corresponding to the low-quality video data LM selected by the user based on the identification information list SIL stored in the storage unit 31 and the identification information acquired from the identification information acquisition unit 301. To get. The video output unit 302 outputs the high-quality video data HM corresponding to the low-quality video data LM selected by the acquired user to the video acquisition unit 205.

Here, an example of the identification information list SIL will be described with reference to FIG.
FIG. 3 is a diagram showing an example of the identification information list SIL.
The identification information list SIL is a list in which the identification information SI, the low-quality video data LM, the high-quality video data HM, and the original video OM are associated with each other.
In this example, the identification information list SIL includes the identification information list SIL1 and the identification information list SIL2.

The identification information list SIL1 includes "identification information 1" as the identification information SI, "low image quality video data 1" as the low image quality video data LM, "high quality video data 1" as the high quality video data HM, and the original video OM. This is information in a state associated with "original video data 1".
Further, in the identification information list SIL2, the identification information list SIL includes "identification information 2" as the identification information SI, "low image quality video data 2" as the low image quality video data LM, and "high image quality" as the high image quality video data HM. This is information in a state in which "video data 2" and "original video data 2" are associated with each other as the original video OM.

The video output unit 302 has a high image quality corresponding to the low image quality video data LM selected by the user based on the identification information for identifying the low image quality video data LM selected by the user and the identification information SI included in the identification information list SIL. Select the image quality video data HM. Specifically, when the identification information that identifies the low-quality video data LM selected by the user indicates "identification information 2", the video output unit 302 outputs the "high-quality video data 2". It is acquired from the storage unit 31 as the data HM.

<Operation of video distribution system 100>
Next, the operation of the video distribution system 100 will be described with reference to FIG.
FIG. 4 is a diagram showing an example of the operation of the video distribution system 100 of the present embodiment.

(Step S100) The video list generation unit 201 generates a video list. The video list generation unit 201 detects an operation in which the user selects low-quality video data LM from the video list. The video list generation unit 201 acquires the low-quality video data LM selected by the user from the storage unit 23. The video list generation unit 201 supplies the low-quality video data LM selected by the user to the identification information generation unit 203. The identification information generation unit 203 acquires the low-quality video data LM selected by the user from the video list generation unit 201. The identification information generation unit 203 generates identification information indicating the low-quality video data LM acquired from the video list generation unit 201. The identification information generation unit 203 supplies the identification information indicating the generated low-quality video data LM to the identification information output unit 204. The identification information output unit 204 acquires identification information indicating low-quality video data LM from the identification information generation unit 203. The identification information output unit 204 outputs the identification information SI indicating the low-quality video data LM acquired from the identification information generation unit 203 to the identification information acquisition unit 301.

(Step S200) The video data distribution device 3 receives the identification information from the terminal device 2.
The identification information acquisition unit 301 acquires identification information indicating low-quality video data LM from the identification information generation unit 203. The identification information acquisition unit 301 supplies the identification information SI acquired from the identification information generation unit 203 to the video output unit 302.
(Step S210) The video data distribution device 3 transmits the high-quality video data HM indicated by the identification information SI acquired from the terminal device 2. Specifically, the video output unit 302 acquires the identification information SI indicating the low image quality video data LM from the identification information acquisition unit 301. The video output unit 302 acquires high-quality video data HM corresponding to the identification information SI indicating the low-quality video data LM acquired from the identification information acquisition unit 301 from the storage unit 31. The video output unit 302 outputs the high-quality video data HM acquired from the storage unit 31 to the video acquisition unit 205.

(Step S110) The terminal device 2 receives high-quality video data from the video data distribution device 3. Specifically, the video acquisition unit 205 acquires high-quality video data HM from the video output unit 302.

<Summary of the first embodiment>
As described above, the video distribution system 100 of the present embodiment distributes the high-quality video data HM corresponding to the low-quality video data LM selected by the terminal device 2 to the terminal device 2. The low-quality video data LM selected by the terminal device 2 is video data having a smaller amount of data than the high-quality video data HM. This low-quality video data LM is a low-quality video data LM selected by the user. Therefore, the video distribution system 100 allows the user to select a desired high-quality video data HM by presenting video data with a small amount of data. As a result, the video distribution system 100 can distribute the high-quality video data corresponding to the selected video data with a small amount of data to the terminal device 2.
Therefore, according to the video distribution system 100 of the present embodiment, a large amount of content can be distributed to the terminal device.

In the above description, the case where the high-quality video data HM is video data having a higher image quality than the low-quality video data LM has been described, but the present invention is not limited to this. The high-quality video data HM may be any video generated from the original video OM. Specifically, the high-quality video data HM may be video data having better sound quality than the low-quality video data LM. The high-quality video data HM may be video data having a lower image compression rate than the low-quality video data LM. The high-quality video data HM may be an image having different vertical and horizontal pixel sizes than the low-quality video data LM. The high-quality video data HM may be a CG (computer graphics) video generated based on the original video OM. Further, the high-quality video data HM may be the original video OM.

In the above description, the video data distribution device 3 has described the case where the high-quality video data HM is stored in the storage unit 31 in advance, but the present invention is not limited to this. The video data distribution device 3 may acquire high-quality video data HM from another device, for example, a server device that generates high-quality video data HM from the original video OM. Further, the video data distribution device 3 may generate high-quality video data HM in the video data distribution device 3 after receiving the identification information SI from the terminal device 2. In this case, the video output unit 302 performs image processing such as compression on the original video OM corresponding to the identification information acquired from the identification information acquisition unit 301 to generate high-quality video data HM, and the video acquisition unit 205 is subjected to image processing. Output.

In the above description, the configuration in which the low-quality video data LM is stored in the storage unit 23 has been described in advance, but the present invention is not limited to this. As described above, the low-quality video data LM may be a polygon moving image generated by the terminal device 2. In this case, the low-quality video data LM does not need to be stored in the storage unit 23 in advance. The terminal device 2 generates the identification information SI based on the model information and the motion information acquired from the video data distribution device 3 in advance and used for generating the polygon moving image stored in the storage unit 23. Further, the amount of data used for generating this polygon moving image is smaller than that of the high-quality video data HM. As a result, the terminal device 2 can store a large amount of video data in its own device.
Further, the terminal device 2 can receive the high-quality video data HM based on the polygon moving image.

<Second embodiment>
Next, the video distribution system of the second embodiment will be described with reference to the drawings. The video distribution system of the second embodiment supplies high-quality video data HM based on the settings specified by the terminal device from the video data distribution device to the terminal device.
FIG. 5 is a diagram showing an example of the functional configuration of the video distribution system 100a of the second embodiment.
The video distribution system 100a is different from the above-described first embodiment in that the terminal device 2a has a function of generating setting information indicating the setting of the high-quality video data HM to be acquired.
Hereinafter, each function will be described. The same configurations and operations as those of the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

<Function to generate setting information>
The terminal device 2a includes a setting information generation unit 208, a presentation start position information generation unit 206, a setting information output unit 207, and a presentation unit 202a as functional units of the control unit 20a.
The setting information generation unit 208 generates setting information indicating the setting of the high-quality video data HM.
The presentation start position information generation unit 206 generates presentation start position information indicating the presentation start position of the high-quality video data HM in the original video data OM. The start position is the time to start the presentation of the total presentation time of the high-quality video data HM. The setting information generation unit 208 generates setting information including the presentation start position information generated by the presentation start position information generation unit 206.
The setting information output unit 207 outputs the setting information to the identification information generation unit 203. The video acquisition unit 205 acquires high-quality video data HM after the start position.
The presentation unit 202a presents the video data to the display unit 21.

In the video data distribution device 3a, the control unit 30a includes a setting information acquisition unit 303 as a functional unit thereof.
The setting information acquisition unit 303 acquires setting information from the setting information output unit 207. The setting information acquisition unit 303 supplies the setting information acquired from the setting information output unit 207 to the video output unit 302.
The video output unit 302 outputs high-quality video data HM corresponding to the setting information acquired by the setting information acquisition unit 303 to the video acquisition unit 205. Specifically, the video output unit 302 acquires the high-quality video data HM corresponding to the above-mentioned identification information SI and the setting information from the storage unit 31. The video output unit 302 outputs the high-quality video data HM corresponding to the identification information SI acquired from the storage unit 31 and the setting information to the video acquisition unit 205.

Here, the setting information generated by the setting information generation unit 208 will be described with reference to FIG.
FIG. 6 is a diagram showing an example of setting information MSI.

The setting information MSI includes information on the image quality, sound quality, start position, and end position of the high-quality video data HM video. The end position is the time to end the presentation of the total presentation time of the high-quality video data HM.
When the presentation start position information is generated while the presentation unit 202a is presenting the low image quality video data LM, the presentation unit 202a starts presenting the low image quality video data LM being presented with the data indicated by the presentation start position information. Switch to high-quality video data HM after the position. In this case, the start position indicated by the presentation start position information is the presentation position of the low-quality video data LM being presented by the presentation unit 202a.

FIG. 7 is a diagram showing an example of a screen display used for generating presentation start position information displayed on the display unit 21.

FIG. 7A is a diagram showing an example of a user-selected low-quality video data LM presented on the display unit 21.
The image UI 1 shown in FIG. 7A includes a presentation unit MSP that presents video data, a time axis TL that indicates a presentation position during presentation of the video data, and a video data switching button SB.
The low-quality video data LM selected by the user is displayed on the presentation unit MSP shown in FIG. 7A. In this example, the low quality video data LM is a video of a match at a stadium. Further, on the time axis TL, "01:00:00", which is the total presentation time of the low image quality video data LM selected by the user, is displayed. In addition, "00:48:00" is displayed as the presentation position currently being presented. This indicates that the video at the position of 48 minutes out of the video data having a total presentation time of 1 hour is displayed.

Here, when the user touches the video data switching button SB, the presentation start position information generation unit 206 that has detected this touch operation has the presentation start position "48:00" and the presentation end position "01:00:00". Generate presentation start position information. The video data distribution device 3a that has acquired the setting information MSI including the presentation start position information distributes the high-quality video data HM to the terminal device 2a from the presentation start position indicated by the presentation start position information. The presentation unit 202a switches the video data from the low-quality video data LM being presented to the high-quality video data HM after the presentation start position of the data indicated by the presentation start position information.
It should be noted that this end position "01:00:00" does not have to be included in the presentation start position information. When the presentation end position is not included, the video acquisition unit 205 may acquire the video data up to the end position of the total presentation time.

Note that FIG. 7B is an example of the image UI 2 for setting the start position and the end position.
The start position SP and the end position EP specify a position to be included in the presentation start position information generated by the presentation start position information generation unit 206.
In the case of the start position information shown in FIG. 7B, the presentation unit 202a switches to the low-quality video data LM when the presentation of the high-quality video data HM is completed up to the presentation end position “00:50:00”. You may continue to present. Further, the presentation unit 202a may present the high-quality video data HM up to the presentation end position “00:50:00” and notify the user when the presentation is completed.

Next, with reference to FIG. 8, a method of generating setting information MSI indicating the image quality and sound quality of the high-quality video data HM will be described.
FIG. 8 shows an example of a screen display used for generating the setting information MSI displayed on the display unit 21.
In the present embodiment, the designation of the image quality and the designation of the sound quality included in the setting information MSI are each designated by the compression rate. The higher the compression rate, the lower the image quality and sound quality of the high-quality video data HM as compared with the image quality and sound quality of the original video OM. The lower the compression rate, the better the image quality and sound quality, and the smaller the difference between the image quality and sound quality between the high-quality video data HM and the original video OM.

<Summary of the second embodiment>
As described above, the video distribution system 100a of the present embodiment distributes the high-quality video data HM of the setting indicated by the setting information MSI to the terminal device 2a. Setting information The settings indicated by MSI are changed by the user's operation of the terminal device 2a. That is, the user can acquire the high-quality video data HM having a desired setting.

Further, the setting information MSI includes the presentation start position information. This makes it possible to change the position at which acquisition of high-quality video data HM is started. Further, when the setting information MSI including the presentation start position information is generated during the presentation of the low-quality video data LM, the presentation unit 202a presents the video data from the low-quality video data LM to the high-quality video data HM. Can be switched. As a result, the user who is viewing the low-quality video data LM can enjoy the high-quality video data HM without interrupting the viewing of the video.
Further, when the setting information MSI includes the presentation end position, the content of a part of the large-capacity content can be delivered. For example, in the case of video content in which a soccer game is recorded, the video distribution system 100a can distribute a part of a video such as a goal scene to the terminal device 2a as high-quality video data HM. When the setting information MSI is generated while the low image quality video data LM is being presented, the terminal device 2a determines whether or not the high image quality video data HM corresponding to the setting information MSI is stored in the storage unit 23. judge.
When the high-quality video data HM is stored in the storage unit 23, the high-quality video data HM stored in the storage unit 23 is presented. When the high-quality video data HM corresponding to the setting information MSI is not stored in the storage unit 23, the terminal device 2a has the high-quality video data HM corresponding to the setting information MSI for the video data distribution device 3a. Request delivery. In this case, the terminal device 2a may notify the user that the distribution request for the high-quality video data HM is to be supplied to the video data distribution device 3a, and may supply the distribution request only when the user approves.

The above-mentioned setting information MSI may include designation of player information, information on the type of wireless communication, terminal information, and the like.
The designation of the player information is, for example, to specify the image in which the player is shown in the image of the original image OM. For this designation, for example, a still image of a player may be designated. The video distribution system 100a distributes the video of the portion of the original video OM in which the designated player is shown to the terminal device 2a as high-quality video data HM. In this case, the video data distribution device 3a selects an image showing the athlete based on information contained in the still image of the athlete, for example, a uniform design, a uniform number, a physical characteristic, and the like.

The wireless communication type information is information related to wireless communication used for communication between the terminal device 2a and the video data distribution device 3a, and is, for example, wireless communication type information indicating wireless LAN, LTE, or the like, or communication. Communication quality information such as throughput of. In this case, the video distribution system 100a can distribute high-quality video data HM with image quality according to the speed and communication quality of wireless communication based on the information of the type of wireless communication.

The terminal information includes information indicating the performance of the terminal device 2a. The processing speed and presentation environment, which are the performances of the terminal device 2a, are determined by the type and operating frequency of the arithmetic unit included in the terminal device 2a, the access speed and capacity of the memory, the type and operating frequency of the image processing engine, and the like. For example, the terminal information includes operating system information, model information, application name for presenting video data, information indicating a decoder that decodes video data, information indicating CPU performance and type, and information on the number of display pixels (information indicating the number of display pixels. Information on resolution), information indicating the size of the display, etc. In this case, the video distribution system 100a can distribute the high-quality video data HM according to the processing speed of the terminal device 2a and the presentation environment of the high-quality video data HM. In this case, the storage unit 31 included in the video data distribution device 3a stores high-quality video data HM corresponding to the information included in the terminal information described above. The video data distribution device 3a provides the terminal device 2a with a high-quality video data HM corresponding to the terminal information acquired from the terminal device 2a from among a plurality of high-quality video data HMs stored in the storage unit 31. To deliver. That is, the video data distribution device 3a can select and distribute a high-quality video data HM suitable for the terminal device 2a based on the terminal information acquired from the terminal device 2a.

Further, the video data distribution device 3a corresponds to the storage unit 31 with the setting information MSI corresponding to the high-quality video data HM previously distributed to the terminal device 2a and the terminal identification information for identifying the terminal device 2a. Remember with it attached. When the video data distribution device 3a receives a distribution request for high-quality video data HM without setting information MSI from the terminal device 2a in which the terminal identification information is stored in the storage unit, the video data distribution device 3a associates with the terminal identification information. High-quality video data HM is distributed based on the stored setting information MSI. When the video data distribution device 3a receives a distribution request for high-quality video data HM accompanied by the setting information MSI from the terminal device 2a in which the terminal identification information is stored in the storage unit, the video data distribution device 3a newly receives the setting information MSI. Is stored in association with the terminal identification information, and high-quality video data HM is distributed based on the newly received setting information MSI.

<Third embodiment>
Next, the video distribution system of the third embodiment will be described with reference to the drawings. The video distribution system of the third embodiment distributes the high-quality video data HM in which the viewpoint of the video is set from the video data distribution device to the terminal device.
FIG. 9 is a diagram showing an example of the functional configuration of the video distribution system 100b according to the third embodiment.

The video distribution system 100b is different from the above-described second embodiment in that the terminal device 2b has a function of generating viewpoint information indicating the viewpoint of the high-quality video data HM to be acquired.
The video data distribution device 3b transmits high-quality video data HM captured from the camera position indicated by this viewpoint information. The high-quality video data HM captured from this camera position is CG video data generated based on a plurality of original video OMs captured from cameras arranged at different positions. In the following description, this CG video data is also referred to as a free viewpoint video. The free viewpoint video is an example of the third video data. The free-viewpoint image is a three-dimensional image generated by using a multi-viewpoint image which is an image captured from a plurality of positions. For example, the user can view the image switched to the desired position or the image from the desired angle by designating the position of the viewpoint of the free viewpoint image, the angle of the viewpoint, and the like. Here, the multi-viewpoint video is an example of the original video OM. The above-mentioned viewpoint information includes the position of the viewpoint of this free viewpoint image, the angle of the viewpoint, and the like. That is, the free viewpoint image is an image generated based on the viewpoint information and the original image OM and corresponding to the viewpoint indicated by the viewpoint information.

The video output unit 302 outputs the free viewpoint video as high-quality video data HM to the terminal device 2b.
Hereinafter, each function will be described. The same configurations and operations as those of the first embodiment and the second embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

<Function to generate viewpoint information>
In the terminal device 2b, the control unit 20b includes a viewpoint information generation unit 209 as a functional unit thereof.
The viewpoint information generation unit 209 generates viewpoint information.
Here, the viewpoint information will be described with reference to FIG.
The viewpoint information is information on the position of the camera designated by the low-quality video data LM and the direction in which the camera captures images. This camera is also referred to as a virtual camera in the following description. Further, in the following description, the position of the virtual camera and the direction in which the virtual camera takes an image are also described as a viewpoint.
FIG. 10 is a diagram showing an example of the image UI 4 for setting the viewpoint information.

The presentation unit MSP includes a virtual camera CAMI, a value CAMP indicating the position of the virtual camera, and an axis CAMD indicating the direction in which the virtual camera captures images. Here, the value CAMP is a value having a Z-axis in the normal direction with the predetermined plane as a plane whose X-axis and Y-axis are orthogonal to each other. In this example, the predetermined surface is the ground of the stadium, and the virtual camera is located at a position of 300 on the X-axis, 100 on the Y-axis, and 0 on the Z-axis. The axis CAMD is, in this example, the negative orientation of the X-axis. This value CAMP and the axis CAMD are input by the user who operates the terminal device 2b. The viewpoint information includes this value CAMP and the axis CAMD.

Here, an example of an operation in which the user inputs the value CAMP and the axis CAMD will be described. In this example, the case where the low-quality video data LM is the above-mentioned polygon moving image will be described. As described above, the polygon moving image is a three-dimensional CG moving image in which model information that models an image of a player is moved by motion information. This polygon moving image is a three-dimensional CG moving image. Therefore, the user can place the virtual camera CAMI at a desired viewpoint. The user sets the viewpoint of the virtual camera CAMI set by the polygon moving image which is the low image quality video data LM as the viewpoint information, and thereby distributes the high quality video data HM captured from the desired viewpoint to the video data distribution device 3b. Request for. As a result, the video data distribution device 3b can distribute the high-quality video data HM captured from the viewpoint desired by the user to the terminal device 2b.

Returning to FIG. 9, the viewpoint information generation unit 209 supplies the generated viewpoint information to the setting information generation unit 208b. The setting information generation unit 208b generates the setting information MSI including this viewpoint information.

The setting information acquisition unit 303 acquires the setting information MSI including the viewpoint information from the setting information output unit 207. The setting information acquisition unit 303 supplies the setting information MSI including the viewpoint information acquired from the setting information output unit 207 to the video generation unit 304. Further, the identification information acquisition unit 301 supplies the identification information SI to the video generation unit 304.

The video generation unit 304 acquires the setting information MSI including the viewpoint information from the setting information acquisition unit 303. The video generation unit 304 acquires the identification information SI from the identification information acquisition unit 301.
The image generation unit 304 generates a free viewpoint image based on the setting information MSI including the viewpoint information acquired from the setting information acquisition unit 303 and the identification information SI acquired from the identification information acquisition unit 301. Specifically, the image generation unit 304 generates a free viewpoint image from a plurality of original image OMs indicated by the identification information SI based on the viewpoint information indicated by the setting information MSI.

The video generation unit 304 supplies the generated free viewpoint video to the video output unit 302.
The video output unit 302 outputs the free viewpoint video corresponding to the setting information MSI acquired by the setting information acquisition unit 303 to the video acquisition unit 205.

<Summary of the third embodiment>
As described above, the video distribution system 100b of the present embodiment distributes the free viewpoint video captured from the position corresponding to the viewpoint information to the terminal device 2b. The setting information MSI including the viewpoint information is changed by the operation of the user of the terminal device 2a. That is, the user can acquire the free viewpoint image captured from a desired position.

In the above description, the case where the free viewpoint image is a CG image has been described, but the present invention is not limited to this. When the camera position indicated by the viewpoint information and the position of the camera that captured the original image OM are close to each other, the original image OM captured by this camera may be used as the free viewpoint image. Alternatively, this viewpoint information may simply be information that identifies one camera from a plurality of cameras that have captured the original video OM. In this case, the video distribution system 100b transmits the original video OM captured by the camera specified by this viewpoint information.

Further, in the above description, the configuration in which the free viewpoint video is generated by the video generation unit 304 has been described, but the present invention is not limited to this. In the video data distribution device 3b, the free viewpoint video generated in advance may be stored in the storage unit 31. When the image generation unit 304 generates the free viewpoint image, the storage unit 31 may store the viewpoint position indicated by the viewpoint information and the generated free viewpoint image in association with each other. As a result, the video data distribution device 3b can supply the free viewpoint video to the terminal device 2b in a shorter time when the distribution of the free viewpoint video from the already generated viewpoint position is requested.

The above-mentioned setting information MSI may include position information of the terminal device 2b, terminal identification information, and the like. The position information of the terminal device 2b is information indicating the position of the terminal device 2b when the terminal device 2b receives or presents the low image quality video data LM from the video data distribution device 3b. For example, it is location information indicating a presentation location, information for identifying a wireless LAN access point with which the terminal device 2b is communicating, identification information for identifying a base station of a mobile communication network, and the like. The video distribution system 100b may determine whether or not to distribute the high-quality video data HM to the terminal device 2b based on this position information.

Further, the video data distribution device 3b may generate high-quality video data HM based on the position information instead of the viewpoint information included in the setting information MSI. Specifically, for example, when the information for identifying the wireless LAN access point included in the setting information MSI indicates a specific position of the spectator seat of the stadium, the video data distribution device 3b has the spectator seat. A free viewpoint image with the viewpoint position is generated and distributed to the terminal device 2b.

Further, the terminal identification information may be, for example, an electronic ticket ID used for admission to a sports game or the like. In this case, the video distribution system 100a can distribute the high-quality video data HM to the terminal device 2a owned by the user who has come to the sports game. Further, the video data distribution device 3b may distribute high-quality video data HM according to the type of the electronic ticket ID. For example, the video data distribution device 3b distributes high-quality video data HM to the terminal device 2b according to the selling price of the electronic ticket ID and the type of ticket that can be used multiple times within a predetermined period. Make it different.

Further, the video data distribution device 3b may generate a free viewpoint video based on the electronic ticket ID. Specifically, when the position of the spectator seats of the stadium is specified by the electronic ticket ID, as described above, the video data distribution device 3b displays a free viewpoint image with the position of the spectator seat as the viewpoint position. Generate and distribute to the terminal device 2b. Thereby, the same image as the image seen by the owner of the terminal device 2b at the stadium can be presented on the terminal device 2b.

Further, when the video distribution system 100b distributes the high-quality video data HM only to the terminal device 2b located in the stadium, the terminal device 2b in which the electronic ticket ID is stored is installed in the electronic ticket ID and the stadium. The setting information MSI including the information for identifying the access point of the wireless LAN is transmitted to the video data distribution device 3b. The video data distribution device 3b that has received the information for identifying the electronic ticket ID and the access point considers that the terminal device 2b is located in the stadium and displays the high-quality video data HM associated with the electronic ticket ID. It may be delivered to the terminal device 2b.

The video acquisition unit of the first to third embodiments described above may acquire high-quality video data HM as streaming video data. In this case, the video output unit distributes the high-quality video data HM by streaming. As a result, the video distribution system can distribute high-quality video data HM without considering the capacity of the storage unit of the terminal device. Further, when the terminal device acquires the high-quality video data as streaming video data, the terminal device can suppress the time for waiting for the start of the presentation of the high-quality video data HM.

Further, the terminal device of the first embodiment and the second embodiment described above may further include a payment unit and a payment information output unit.
The settlement unit makes a settlement related to the high-quality video data HM. Specifically, the settlement unit makes a settlement related to the distribution of high-quality video data HM to a server for settlement (not shown). The settlement unit may, for example, settle an amount determined according to the total presentation time or the number of presentations of the high-quality video data HM to be acquired. When the payment unit acquires the high-quality video data HM as streaming video data, the payment unit may settle an amount determined according to the time for acquiring the streaming video data. When the video data distribution device 3b distributes streaming video data to the terminal device 2b, the video data distribution device 3b is configured to include the above-mentioned payment unit and payment information output unit instead of the terminal device 2b. You may.
The payment information output unit outputs payment information indicating the result of payment by the payment unit to the video data distribution device. The video data distribution device further distributes high-quality video data HM based on the acquired payment information. In addition, this payment information may be included in the setting information MSI.

Each part of the terminal device 2, the terminal device 2a, the terminal device 2b, the video data distribution device 3, the video data distribution device 3a, and the video data distribution device 3b in each of the above embodiments is realized by dedicated hardware. It may be one, or it may be realized by a memory and a microprocessor.

Each part of the terminal device 2, the terminal device 2a, the terminal device 2b, the video data distribution device 3, the video data distribution device 3a, and the video data distribution device 3b is composed of a memory and a CPU (central processing unit), and is a terminal device. 2. A program for realizing the functions of each part of the terminal device 2a, the terminal device 2b, the video data distribution device 3, the video data distribution device 3a, and the video data distribution device 3b is loaded into the memory and executed. It may be the one that realizes.

Further, a computer-readable recording medium is provided with a program for realizing the functions of each part of the terminal device 2, the terminal device 2a, the terminal device 2b, the video data distribution device 3, the video data distribution device 3a, and the video data distribution device 3b. The processing may be performed by recording, loading the program recorded on the recording medium into a computer system, and executing the program. The term "computer system" as used herein includes hardware such as an OS and peripheral devices.

Further, the "computer system" includes the homepage providing environment (or display environment) if the WWW system is used.
Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, and a storage device such as a hard disk built in a computer system. Further, a "computer-readable recording medium" is a communication line for transmitting a program via a network such as the Internet or a communication line such as a telephone line, and dynamically holds the program for a short period of time. In that case, it also includes those that hold the program for a certain period of time, such as the volatile memory inside the computer system that is the server or client. Further, the above-mentioned program may be for realizing a part of the above-mentioned functions, and may be further realized by combining the above-mentioned functions with a program already recorded in the computer system.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment and may be appropriately modified without departing from the spirit of the present invention. can. The configurations described in each of the above-described embodiments may be combined.

100, 100a, 100b ... Video distribution system, 2,2a, 2b ... Terminal device, 3,3a, 3b ... Video data distribution device, 20,20a, 20b, 30,30a, 30b ... Control unit, 21 ... Display unit, 22 ... Operation unit, 23, 31 ... Storage unit, 32, 32a ... Information distribution unit, 201 ... Video list generation unit, 202, 202a ... Presentation unit, 203 ... Identification information generation unit, 204 ... Identification information output unit, 205 ... Video acquisition unit, 206 ... Presentation start position information generation unit, 207 ... Setting information output unit, 208, 208b ... Setting information generation unit, 209 ... Viewpoint information generation unit, 301 ... Identification information acquisition unit, 302 ... Video output unit, 303 … Setting information acquisition unit, 304… Video generation unit

Claims (6)

A video distribution system including a terminal device and a video data distribution device for distributing video data.
The terminal device is
An identification information output unit that outputs identification information indicating the first video data generated from the original video, which is video data already distributed to the own device, to the video data distribution device.
Presentation start position information generated by operating the own device while the first video data is being presented on the display unit included in the own device and indicating the presentation start position of the second video data in the original video. A setting information output unit that outputs setting information including the above to the video data distribution device, and
It is provided with a video acquisition unit that acquires a second video data that is different from the first video data and is generated from the original video after the presentation start position from the video data distribution device.
The video data distribution device is
An identification information acquisition unit that acquires the identification information output from the terminal device,
A setting information acquisition unit that acquires the setting information output from the terminal device, and
A video output unit that outputs the second video data to the terminal device based on the identification information acquired by the identification information acquisition unit and the setting information acquired by the setting information acquisition unit is provided.
The setting information output unit outputs the setting information including the position information of the terminal device .
The video output unit outputs the second video data to the terminal device whose position indicated by the position information of the terminal device included in the setting information is the viewpoint position.
Video distribution system. An identification information acquisition unit that acquires identification information indicating the first video data generated from the original video, which is video data delivered to the terminal device.
A presentation start position indicating a presentation start position of the second video data in the original video, which is generated by operating the terminal device while the first video data is presented on the display unit included in the terminal device. A setting information acquisition unit that acquires setting information including location information,
An image different from the first video data based on the identification information acquired by the identification information acquisition unit and the setting information acquired by the setting information acquisition unit, and the original image after the presentation start position. It is provided with a video output unit that outputs the second video data generated from the terminal device to the terminal device.
The setting information acquisition unit acquires the setting information including the position information of the terminal device, and obtains the setting information.
The video output unit outputs the second video data to the terminal device whose position indicated by the position information of the terminal device included in the setting information is the viewpoint position.
Video data distribution device. The setting information acquisition unit acquires the setting information including the presentation start position information generated when an operation for designating the presentation start position of the second video data in the original video is detected.
The video data distribution device according to claim 2. The setting information corresponding to the second video data output to the terminal device in the past is stored in a state of being associated with the terminal identification information of the terminal device that has output the second video data in the past. With more storage to
When the video output unit receives a distribution request for the second video data without the setting information from the terminal device associated with the terminal identification information, the storage unit associates with the terminal identification information. Outputs the second video data associated with the setting information stored in.
The video data distribution device according to any one of claims 2 and 3. On the computer
An identification information acquisition function that acquires identification information indicating the first video data generated from the original video, which is the video data delivered to the terminal device.
A presentation start position indicating a presentation start position of the second video data in the original video, which is generated by operating the terminal device while the first video data is presented on the display unit included in the terminal device. Setting information acquisition function to acquire setting information including location information,
Based on the identification information acquired by the identification information acquisition function and the setting information acquired by the setting information acquisition function, the image is different from the first image data and is the image after the presentation start position. A video data distribution device control program that realizes a video output function that outputs second video data generated from the original video to the terminal device.
The setting information acquisition function acquires the setting information including the position information of the terminal device, and obtains the setting information.
The video output function outputs the second video data whose position indicated by the position information of the terminal device included in the setting information is the viewpoint position to the terminal device.
Video data distribution device control program. An identification information acquisition step for acquiring identification information indicating the first video data generated from the original video, which is the video data delivered to the terminal device.
A presentation start position indicating a presentation start position of the second video data in the original video, which is generated by operating the terminal device while the first video data is presented on the display unit included in the terminal device. Setting information acquisition step to acquire setting information including location information,
Based on the identification information acquired in the identification information acquisition step and the setting information acquired in the setting information acquisition step, the video is different from the first video data, and the video is different from the presentation start position. A video data distribution method including a video output step of outputting a second video data generated from an original video to the terminal device.
The setting information acquisition step acquires the setting information including the position information of the terminal device .
In the video output step, the second video data whose position indicated by the position information of the terminal device included in the setting information is the viewpoint position is output to the terminal device.
Video data distribution method.

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