Content reproduction control device, content reproduction device, content reproduction system, content reproduction method, and program

Abstract

To provide a content reproduction control device, a content reproduction device, a content reproduction system, a content reproduction method, and a program for supporting execution and / or learning of a relaxation method.SOLUTION: In the content reproduction system, a content reproduction control device 100 for supporting user's learning and / or execution of a motion based on a relaxation method comprises a reproduction control unit 120 which selects one or more contents from among a plurality of contents to present a motion based on the relaxation method to the user and causes content reproduction devices 200 to reproduce the contents.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a content playback control device, a content playback device, a content playback system, a content playback method, and a program. [Background technology]

[0002] Relaxation techniques are known as methods for releasing physical tension and relaxing the body, and are mainly used in the medical field, etc. Among relaxation techniques, muscle relaxation, autogenic training, breathing techniques, etc. can be performed independently and are considered useful as relaxation techniques that can be performed by individuals on their own.

[0003] On the other hand, it has been reported that relaxation techniques can be mastered after a certain period of time under the guidance of an expert, and it is known that there are individual differences (e.g., Non-Patent Documents 1 to 4). Given this background, relaxation techniques cannot be practiced independently without mastering them.

[0004] Furthermore, Patent Document 1 discloses and proposes a treatment support system that controls content displayed on a display of a head-mounted device based on information related to treatment. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2023-115768 [Non-patent literature]

[0006] [Non-Patent Document 1] "A Case Study on the Acquisition Process of Autogenic Training," Journal of Human Environment Studies, 2010, Vol. 9, pp. 97-105 [Non-patent document 2] "Changes in relaxation response over time during the learning process of progressive muscle relaxation," Bulletin of the Faculty of Nursing, Chiba University, 2008, No. 30, pp. 11-17 [Non-patent document 3] "Cancer patients' learning status of progressive muscle relaxation and the effects of continued self-practice," Journal of the Japanese Society for Nursing Research, 2006, Vol. 29, No. 5, pp. 71-82 [Non-patent document 4] "The effects of continuous progressive muscle relaxation on the mind and body of athletes," Nippon Sport Science University, Sports Science Research, 2013, Vol. 2, pp. 40-47 Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, relaxation techniques are difficult to perform independently without mastering them, and if they have not been mastered, an assistant is required. Furthermore, the type, length, and combination of relaxation techniques that are suitable for performing may vary depending on the practitioner's physical condition and condition. Furthermore, the effects obtained by performing relaxation techniques may vary depending on the practitioner, and it is desirable to have relaxation techniques that provide new effects.

[0008] An object of the present invention is to provide a content playback control device, a content playback device, a content playback system, a content playback method, and a program for supporting the implementation and / or acquisition of relaxation techniques. [Means for solving the problem]

[0009] The gist of the present invention is as follows. (1) A content playback control device for assisting a user in learning and / or performing a movement based on a relaxation technique, comprising: a content playback control device having a playback control unit that selects one or more pieces of content from a plurality of pieces of content that present the user with actions based on the relaxation technique, and causes the content playback device to play them; (2) The content playback control device according to (1), wherein the playback control unit determines an order of the content to be played back by the content playback device from among the plurality of contents based on biometric information of the user. (3) further comprising a stress information generating unit that generates stress information of the user based on the biological information; The content playback control device according to (2), wherein the playback control unit determines an order of the content to be played back by the content playback device from among the plurality of contents based on the stress information. (4) further comprising an effect determining unit for determining the effect of the content based on the content and changes in the user's biometric information before and after playback of the content; The content playback control device according to (2) or (3), wherein the playback control unit determines the order of the contents to be played back from the plurality of contents on the content playback device based on the user's biometric information and the determined effectiveness of the content. (5) The content playback control device according to any one of (1) to (4), wherein the biological information includes information on one or more selected from the group consisting of respiration, pulse, blood pressure, and pupils. (6) The content playback control device according to any one of (1) to (5), wherein the biological information includes information about pupil diameter. (7) The content playback control device according to any one of (1) to (6), wherein the relaxation techniques include one or more selected from breathing techniques, progressive muscle relaxation, and autogenic training. (8) The content playback device is a display of a head-mounted device worn on the user's head, The content playback control device according to any one of (1) to (7), wherein the plurality of contents include a content in a virtual reality space. (9) The content playback control device according to (8), wherein the playback of the content induces amplification of theta waves while suppressing amplification of alpha waves of the user. (10) A content playback device for assisting a user in learning and / or performing a movement based on a relaxation technique, comprising: a playback device that receives information about content from a content playback control device and plays back the content; The content playback control device selects one or more pieces of content from a plurality of pieces of content that present the user with movements based on the relaxation technique, and causes the content playback device to play the selected pieces of content. (11) The content playback control device further includes a biometric information sensor that acquires biometric information of the user who is viewing the content played back on the playback device, and a transmitter that transmits the biometric information to the content playback control device, The content playback device according to (10), wherein the content playback control device determines the order of the content to be played back by the content playback device from the plurality of contents based on biometric information of the user. (12) A display of a head-mounted device worn on the head of the user, The content playback device according to (11) or (12), wherein the plurality of contents include content in a virtual reality space. (13) A content playback system for supporting a user in learning and / or performing a movement based on a relaxation technique, comprising: a content playback control device having a playback control unit that selects one or more pieces of content from a plurality of pieces of content that present the user with actions based on the relaxation technique and causes a content playback device to play them; a content playback system including the content playback device, the content playback device having a playback device that receives the content from the content playback control device and plays back the content. (14) A content playback method for assisting a user in learning and / or performing a movement based on a relaxation technique, comprising: determining an order of one or more pieces of content to be reproduced by a content reproduction device from a plurality of pieces of content that present the user with actions based on the relaxation technique; a content playback method for playing back the content to the user in accordance with the determined order; (15) A program for assisting a user in learning and / or performing a movement based on a relaxation technique, Computer, A program for functioning as a content playback control device, having a playback control unit that selects one or more contents from a plurality of contents that present actions based on the relaxation technique to the user and causes the content playback device to play them. [Effects of the Invention]

[0010] With the above configuration, it is possible to provide a content playback control device, a content playback device, a content playback system, a content playback method, and a program for supporting the implementation and / or acquisition of relaxation techniques. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a block diagram illustrating an overview of a content playback system and a functional configuration of a content playback control device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram illustrating the functional configuration of a content playback device used in the content playback system shown in FIG. [Figure 3] FIG. 3 is an image showing an example of content used in the content reproduction system shown in FIG. [Figure 4] FIG. 4 is an image showing another example of content used in the content reproduction system shown in FIG. [Figure 5] FIG. 5 is a flowchart illustrating a content playback method according to an embodiment of the present invention. [Figure 6] FIG. 6 is a flowchart illustrating an effect determination method used in a content playback method according to one embodiment of the present invention. [Figure 7]FIG. 7 is a block diagram illustrating the functional configuration of a content playback control device according to a modified example of the present invention. [Figure 8] FIG. 8 is a block diagram showing an example of a hardware configuration of a content playback control device according to an embodiment of the present invention. [Figure 9] FIG. 9 is a block diagram showing an example of a hardware configuration of a content playback device according to an embodiment of the present invention. [Figure 10] FIG. 10 is a graph comparing the power of theta waves for each condition during each step in the example. [Figure 11] FIG. 11 is a graph comparing the power of alpha waves for each condition in each step in the example. [Figure 12] FIG. 12 is a graph comparing the power of beta waves for each condition during each step in the example. [Figure 13] FIG. 13 is a graph comparing the gamma wave power for each condition in each step in the example. [Figure 14] FIG. 14 is a graph comparing the amount of parasympathetic activity under each condition during the execution of each step in the example. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. <1. System Overview> First, an outline of a content playback system including a content playback control device and a content playback device according to this embodiment will be described. Fig. 1 is a block diagram illustrating an outline of a content playback system according to one embodiment of the present invention and the functional configuration of a content playback control device, and Fig. 2 is a block diagram illustrating the functional configuration of a content playback device used in the content playback system shown in Fig. 1.

[0013] 1 is a system for supporting users (users 20A to 20C in this embodiment) in learning and / or performing movements based on a relaxation technique. The content playback system 1 includes a content playback control device 100 and a plurality of content playback devices 200A to 200C. The content playback control device 100 and the content playback devices 200A to 200C cooperate to present content that guides users 20A to 20C to perform movements based on a relaxation technique, thereby supporting users 20A to 20C in learning and / or performing movements based on a relaxation technique.

[0014] In this embodiment, three content playback devices 200A to 200C are exemplified as content playback devices, but it goes without saying that any number of content playback devices can be included in the content playback system 1. Also, in this embodiment, three users 20A to 20C are exemplified as users, but it goes without saying that the content playback system 1 can simultaneously support any number of users. In the following description, for ease of explanation, the content playback device 200 will be described first as a representative of the content playback devices 200A to 200C, and then the content playback control device 100 will be described.

[0015] (1.1. Content playback device 200) 2 plays back the content received from the content playback control device 100 and presents it to the users 20A to 20C. The content playback device 200 also acquires biometric information of the users 20A to 20C before, during, or after viewing the content, and transmits the biometric information to the content playback control device 100.

[0016] Here, content playback device 200 is a head-mounted device that is worn on the heads of users 20A to 20C. Therefore, by wearing content playback device 200, users 20A to 20C can bring the display into their field of vision without having to adjust their posture to bring the display into their field of vision or without having to hold the display with their hands, etc. This allows them to perform movements based on a relaxation technique in a more relaxed posture, enhancing the effect of practicing the relaxation technique.

[0017] Furthermore, content reproduction device 200 employs a head-mounted display as display 213, and can display images so as to cover the entire field of view of users 20A to 20C. This allows users 20A to 20C using content reproduction device 200 to feel immersed in the content they are watching, and they can concentrate on the content and on performing movements based on a relaxation technique.

[0018] As shown in FIG. 2, the content playback device 200 includes a playback unit 210, a biometric information sensor 220, and a transmission / reception unit 230. The playback unit 210 is a device for playing back content, and includes a control unit 211, a display 213, and an audio output device 215. The control unit 211 controls the operations of the display 213 and the audio output device 215, and causes the display 213 and the audio output device 215 to play back the content.

[0019] The display 213 is a head-mounted display that can display images so as to cover the entire field of view of the users 20A to 20C. The audio output device 215 is, for example, a closed-type headphone that can deliver necessary audio to the users 20A to 20C while blocking external audio from the users 20A to 20C.

[0020] The playback unit 210 is not limited to the illustrated embodiment and may include additional means for playing back content. Examples of such means include an odor generating device, a taste and / or tactile stimulation device, etc. For example, by using an odor generating device to generate a relaxation-promoting odor in sync with audio and video, the users 20A to 20C can be more relaxed, thereby enhancing the effectiveness of the relaxation technique.

[0021] The biological information sensor 220 is made up of various sensors that acquire biological information of the users 20A to 20C. In this embodiment, the biological information sensor 220 has a pupil diameter sensor 221, a pulse sensor 223, and a respiration sensor 225.

[0022] Pupil diameter sensor 221 measures and acquires the pupil diameter of users 20A to 20C. Pupil diameter can be used as an indicator of the stress state of the person being measured, and pupil diameter tends to increase as stress increases. Pupil vibration is also observed when the person is in a relaxed state with relatively little stress, or when the person is in a relatively high stress state. Pupil diameter sensor 221 continuously measures the pupil diameter of users 20A to 20C, thereby detecting pupil vibration along with the pupil diameter of users 20A to 20C.

[0023] Pulse sensor 223 measures and acquires the pulse rates of users 20A to 20C. When the person being measured is under a lot of stress, the pulse rate tends to increase. Pulse sensor 223 continuously measures the pulse rates of users 20A to 20C, thereby observing the pulse rates and changes in the pulse rates of users 20A to 20C.

[0024] The breathing sensor 225 measures and acquires the breathing rates of the users 20A to 20C. When the person being measured is under a lot of stress, the breathing rate tends to increase. The breathing sensor 225 continuously measures the breathing rates of the users 20A to 20C, thereby observing the breathing rates and changes in the breathing rates of the users 20A to 20C.

[0025] The biometric information sensor 220 is not limited to the illustrated embodiment and may include additional sensors for acquiring biometric information of the users 20A to 20C. For example, biometric information that can be acquired includes respiration, iris, pulse, heart rate, blood pressure, body temperature, sweating, oxygen concentration, vocalizations of the users 20A to 20C, brain waves, line of sight, and body movements. Therefore, the biometric information sensor 220 may include one or more sensors corresponding to these.

[0026] Among the above, the biological information sensor 220 is preferably configured to measure, as biological information, information on one or more selected from respiration, pulse, blood pressure, and pupil, more preferably information on one or more selected from respiration and pupil. These biological information are relatively easy to measure and have a relatively strong correlation with stress.

[0027] In particular, information relating to the pupil is relatively easy to measure because a sensor can be easily attached when a head-mounted device is used as the content reproduction device 200, as in this embodiment. Furthermore, among information relating to the pupil, information relating to pupil diameter has a relatively strong correlation with stress.

[0028] The biological information acquired by the biological information sensor 220 is transmitted to the content playback control device 100 via the transmitting / receiving unit 230, either automatically or in response to an instruction from the content playback control device 100 or the control unit 211.

[0029] The transmitting / receiving unit 230 is a communication interface, and transmits and receives information to and from an external device, such as the content playback control device 100, via the network 300.

[0030] (1.2. Content Playback Control Device 100) As shown in FIG. 1, the content playback control device 100 includes a stress information generation unit 110, a playback control unit 120, an effect determination unit 130, a learning unit 140, a storage unit 150, and a transmission / reception unit 160.

[0031] The stress information generator 110 generates stress information about the users 20A to 20C based on the biological information about the users 20A to 20C received from the content reproduction devices 200A to 200C.

[0032] The stress information can be obtained, for example, by quantifying the stress of users 20A to 20C based on the biological information of users 20A to 20C. More specifically, for example, stress levels can be evaluated using a numerical value from 1 to 10, and by referring to a pre-set association table between biological information and stress levels, the numerical value of the stress level corresponding to the measured biological information of users 20A to 20C can be used as the stress information.

[0033] Furthermore, when multiple pieces of biometric information are measured for users 20A to 20C, stress values ​​can be obtained by numerically evaluating the stress level for each piece of biometric information, and one or more of these can be used, or two or more can be combined to provide stress information. The stress values ​​of multiple pieces of biometric information can be combined, for example, by summing or averaging them. In this case, weighting between the stress values ​​of the biometric information can be set as appropriate.

[0034] Furthermore, depending on some biological information, there may be cases where the stress value cannot be evaluated alone. In such cases, the stress value may be evaluated while referring to other biological information. For example, pupil vibrations may occur both in a relaxed state with low stress and in a tense state with high stress. In such cases, it is possible to determine whether users 20A to 20C are in a relaxed or tense state based on their respiratory rate and pulse rate, and then determine the stress value based on pupil vibrations, taking into account the respiratory rate and pulse rate.

[0035] The stress information may be an integrated value obtained by integrating stress values ​​for multiple pieces of biological information, or may be a combination of multiple numbers including the integrated value and the stress values ​​for each piece of biological information. Alternatively, the stress information may be a combination of multiple numbers including the stress values ​​for each piece of biological information, and may not include the integrated value.

[0036] Stress can have multiple causes, including physical and mental ones. In this case, the stress may affect some biological information, but not others. In such cases, comparing the stress values ​​of each biological information can help to infer the cause of stress, making it easier to select the appropriate type of relaxation technique.

[0037] The generated stress information of users 20A to 20C is stored in storage unit 150 together with the biological information, and is also transmitted to playback control unit 120.

[0038] The playback control unit 120 selects one or more pieces of content from a plurality of pieces of content that presents actions based on a relaxation technique to the users 20A to 20C, and causes the content playback device to play them.

[0039] In this embodiment, the content refers to content including video and audio that presents the users 20A to 20C with actions based on a relaxation technique, as described above. Examples of video are shown in FIGS. 3 and 4. FIGS. 3 and 4 show images illustrating an example of content used in the content playback system 1. In FIGS. 3 and 4, video 400A, 400B are made up of background images 401A, 401B and text 403A, 403B that guides the users to perform the actions of the relaxation technique. Typically, audio such as music is added to these video 400A, 400B. Note that the content may guide the users to perform the actions of the relaxation technique using audio instead of text.

[0040] In this embodiment, it is preferable to use content in a virtual reality space as the content. By using content in a virtual reality space, users 20A to 20C using content playback device 200 can feel a greater sense of immersion when watching the content, and can concentrate on the content and on performing movements based on a relaxation technique.

[0041] Furthermore, relaxation techniques include, for example, breathing techniques, progressive muscle relaxation, autogenic training, etc. All of these techniques relieve tension in the bodies of users 20A to 20C and induce relaxation, but they have different characteristics.

[0042] Specifically, the reproduction control section 120 receives stress information derived from the biological information of the users 20A to 20C from the stress information generation section 110, and selects content to be reproduced by the content reproduction device 200 based on the stress information.

[0043] Selection of content based on stress information can be performed, for example, by preparing a correspondence table between stress information and corresponding playback candidate content, and selecting corresponding content from the stress information of users 20A to 20C. Alternatively, content may be selected based on an algorithm obtained by learning correspondence between stress information and playback candidate content that has a high relaxation effect for users 20A to 20C through machine learning.

[0044] Furthermore, the playback control unit 120 may take into consideration the set purpose when selecting content. For example, some users 20A to 20C may have the purpose of learning a specific relaxation technique. Other users 20A to 20C may have the purpose of alleviating a specific stress state. Therefore, in these cases, the playback control unit 120 selects appropriate content that is in line with the purpose and based on the stress information.

[0045] Furthermore, the playback control unit 120 may take into account the playback history of previous content when selecting content. For example, if different types of relaxation techniques are played back randomly, the appropriate relaxation effect may not be obtained. Taking the playback history of the content into account can prevent this situation.

[0046] Furthermore, when selecting content, the playback control unit 120 may take into consideration the effect of the content determined by the effect determination unit 130, which will be described later. The effect of implementing a relaxation technique may differ depending on the proficiency level, physical condition, time of day, etc. of the users 20A to 20C. Therefore, a discrepancy may occur between the initially expected effect and the actual effect. For this reason, when such a discrepancy occurs, it is possible to change the content to be selected, taking into account the discrepancy in effect, so as to achieve the purpose of implementing the relaxation technique.

[0047] The playback control unit 120 can use information such as these correspondence tables, set objectives, content playback history, and effects of content playback by reading them from the storage unit 150 .

[0048] Furthermore, in selecting content, the playback control unit 120 may select only one piece of content to be played back next time, or may select all of the content (i.e., programs) for implementing a series of relaxation techniques by users 20A to 20C, including the order in which they are selected.

[0049] After selecting the content, the playback control unit 120 reads information about the corresponding content from the storage unit 150 and transmits this information together with an instruction to play the content to the content playback device 200 via the transmission / reception unit 160. After playing the content, the playback control unit 120 adds the selected content to the content playback history and saves it in the storage unit 150.

[0050] The effectiveness determination unit 130 determines the effectiveness of the content based on the played content and changes in the biometric information of the users 20A-20C before and after the content is played. Specifically, the effectiveness determination unit 130 reads the content playback history and corresponding stress information stored in the storage unit 150. The effectiveness determination unit 130 then determines the effectiveness of the content by comparing the stress information before and after the playback of a certain piece of content. The comparison may be performed, for example, by subtracting the stress values ​​in the stress information before and after the playback of the content.

[0051] The effect determination unit 130 may also determine the effect of playing multiple pieces of content. For example, stress information before and after the playing of several consecutive pieces of content may be compared, and the effect of playing these consecutive pieces of content may be determined. The effect determination unit 130 may also compare stress information before and after all pieces of content (programs) for implementing a series of relaxation techniques, and determine the effect of the programs.

[0052] The obtained effect of the content is stored in the storage unit 150 in association with the content and the users 20A to 20C who viewed the content.

[0053] The learning unit 140 changes the content selection criteria in the playback control unit 120 based on the content effectiveness obtained by the effectiveness determination unit 130. For example, the learning unit 140 reads a correspondence table between stress information and corresponding playback candidate content, and the effects of the content, stored in the storage unit 150. Next, the learning unit 140 refers to the content effectiveness and replaces less effective content in the correspondence table with more effective content. Alternatively, the learning unit 140 replaces less effective content in a stream of multiple content in the correspondence table with more effective content. The replaced correspondence table is stored in the storage unit 150.

[0054] The storage unit 150 stores various information used for content playback by the content playback system 1. Such information includes information about the content, a correspondence table between stress information and corresponding playback candidate content, content effects, content playback history, user information, a program for operating the content playback control device 100, and the like.

[0055] The transmitting / receiving unit 160 is a communication interface, and transmits and receives information via the network 300 with external devices, such as the content reproduction devices 200A to 200C.

[0056] (1.3. Network 300) Network 300 is a wired or wireless transmission path for information transmitted from devices connected to network 300. For example, network 300 may include public network such as the Internet, a telephone network, or a satellite communication network, various LANs (Local Area Networks) including Ethernet (registered trademark), and WANs (Wide Area Networks). Network 300 may also include a dedicated network such as an IP-VPN (Internet Protocol-Virtual Private Network). Network 300 may also be a short-range wireless communication network such as Bluetooth (registered trademark) or infrared communication.

[0057] <2. Content playback method and effectiveness evaluation method> Next, the operations of the content playback control device 100 and the content playback device 200 that constitute the content playback system 1 described above will be described together with a content playback method and an effect determination method.

[0058] (2.1 Content playback method) The content playback method according to this embodiment is a content playback method for assisting a user in learning and / or performing a relaxation technique-based movement, and includes acquiring biometric information of the user, determining, based on the biometric information of the user, an order for a content playback device to play one or more pieces of content that present the user with the relaxation technique-based movement, and playing the pieces of content for the user in the determined order. Figure 5 is a flowchart of the content playback method according to this embodiment.

[0059] In this embodiment, first, a purpose is set in the content playback device 200, and is transmitted to the content playback control device 100 via the transmission / reception unit 230 (S201). Then, the content playback control device 100 receives information related to the purpose via the transmission / reception unit 160 (S101).

[0060] The users 20A to 20C have some purpose when practicing a relaxation technique using the content reproduction system 1. The purpose may be, for example, relaxation, learning a relaxation technique, etc. In this case, learning a relaxation technique In the case of a purpose, for example, the purpose may be to learn a particular method, and therefore the purpose is input to the content reproduction device 200 by the users 20A to 20C, thereby setting the purpose.

[0061] Next, the biometric information sensor 220 of the content playback device 200 acquires biometric information of the users 20A to 20C and transmits it to the content playback control device 100 via the transmission / reception unit 230 (S203). Then, the content playback control device 100 receives the biometric information of the users 20A to 20C via the transmission / reception unit 160 (S103).

[0062] Next, the stress information generating unit 110 of the content reproduction control device 100 generates stress information of the users 20A to 20C based on the received biological information of the users 20A to 20C (S105).

[0063] Next, the playback control unit 120 of the content playback control device 100 selects content based on the stress information of the users 20A to 20C (S107). In this step, the playback control unit 120 preferably selects content based on the set purpose in addition to the stress information of the users 20A to 20C. Furthermore, in the second and subsequent times of this step, the playback control unit 120 preferably selects content based on the effect of the content determined by the effect determination unit 130 and the playback history of the content.

[0064] After selecting the content, the playback control unit 120 obtains information about the content from the storage unit 150 and transmits it together with an instruction to play the content to the content playback device 200 via the transmission / reception unit 160. The content playback device 200 receives the information about the content and the instruction to play the content via the transmission / reception unit 230 (S205).

[0065] Next, the playback unit 210 of the content playback device 200 plays back the content based on the received instruction to play back the content (S207).

[0066] Next, the biometric information sensor 220 of the content playback device 200 acquires biometric information of the users 20A to 20C and transmits it to the content playback control device 100 via the transmission / reception unit 230 (S209). Then, the content playback control device 100 receives the biometric information of the users 20A to 20C via the transmission / reception unit 160 (S109).

[0067] Next, the stress information generating unit 110 of the content reproduction control device 100 generates stress information of the users 20A to 20C based on the received biological information of the users 20A to 20C (S111).

[0068] Next, the playback control unit 120 of the content playback control device 100 determines whether the initially set purpose has been achieved (S113). If the purpose has been achieved (YES), the content playback control device 100 ends the process (END). Note that the purpose can also be determined to be achieved if a certain amount of time has passed since the start of this method, or if the content has been played a certain number of times.

[0069] The content playback device 200 may present to the users 20A-20C some or all of the progress of the biological information and / or stress information from the beginning to the end. The content playback device 200 may also present to the users 20A-20C the effects of the content obtained by a method to be described later. Such presentation may be made by the content playback device 200 itself, or may be made by the content playback control device 100 instructing the content playback device 200.

[0070] If the purpose has not been achieved (NO), the process returns to step S107, and the content is selected and played again.

[0071] As described above, in the content reproduction system 1, the content reproduction control device 100 selects content based on the biometric information of the users 20A to 20C and causes the content reproduction device 200 to reproduce the content. This enables the content reproduction system 1 to present relaxation techniques suited to the states of the users 20A to 20C. In particular, in this embodiment, by extracting stress information related to stress from the biometric information of the users 20A to 20C, it is possible to present relaxation techniques suited to the states of the users 20A to 20C with high accuracy.

[0072] In this embodiment, the content playback control device 100 determines the effectiveness of content as described below and uses this to select content, thereby enabling the content playback control device 100 to present relaxation techniques more accurately suited to the states of the users 20A to 20C. Furthermore, by determining the effectiveness of content, the content playback device 200 can also present the effects of implementing relaxation techniques to the users 20A to 20C.

[0073] In this embodiment, the content reproduction device 200 is a head-mounted device, and the users 20A to 20C can view the content while assuming a posture suitable for the relaxation technique. Furthermore, since the content reproduction device 200 is a head-mounted device, the users 20A to 20C can feel a deeper sense of immersion in the content that provides the relaxation technique.

[0074] In particular, the inventors have found that when content in a virtual reality space is played back using a head-mounted device as content playback device 200 and users 20A-20C are assisted in practicing a relaxation technique, unique effects can be obtained that are not obtained when conventional relaxation techniques are performed alone. The specific effects of playing back content in a virtual reality space using content playback system 1 equipped with content playback device 200 as a head-mounted device are as follows.

[0075] First, when content in a virtual reality space is played back using content playback device 200 and users 20A-20C are assisted in performing a relaxation technique, the subjective activity and alertness of the users 20A-20C who performed the technique are reduced, and their mood is calmed (their stability is improved). The subjective effect on users 20A-20C is similar to that when users 20A-20C are assisted in performing a relaxation technique using only audio, or when users 20A-20C are resting.

[0076] In contrast, when content playback device 200 was used to play content in a virtual reality space and to support the implementation of a relaxation technique, the brain waves of users 20A-20C were observed to show a suppressed increase in alpha waves and a significant decrease in beta and gamma waves compared to when they were at rest or when only audio was used. Meanwhile, a significant increase in theta waves was observed, similar to when they were at rest or when only audio was used. In other words, when content playback device 200 was used to play content in a virtual reality space and to support the implementation of a relaxation technique, a unique effect of increasing only theta waves was observed in users 20A-20C's brain waves. Brain waves are mainly classified according to their frequency range, such as delta waves (0.5-4 Hz), theta waves (4-8 Hz), alpha waves (8-13 Hz), beta waves (13-26 Hz), and gamma waves (26-45 Hz).

[0077] Here, alpha waves are a range that tends to increase when users 20A to 20C are in a resting state, and an increase in alpha waves indicates that the user is calm and relaxed. Alpha waves are a range that generally increases due to the relaxation effect of implementing a relaxation technique such as autogenic training. Beta waves are a range that tends to increase when the user is in an alert state or an awake state with active thinking activity, and generally tend to decrease when implementing a relaxation technique such as autogenic training. On the other hand, theta waves are a range that tends to increase when the user is in a semi-awake state or a light sleep state, and generally tend to increase when implementing a relaxation technique such as autogenic training.

[0078] This suggests that the increase in alpha waves is suppressed compared to when users are at rest or when only audio is being listened to, while theta waves increase, as with other relaxation techniques, indicating that users 20A-20C are in a state of consciousness with extremely low arousal. This tendency is unique to the case where content playback device 200 is used to play content in a virtual reality space and to support the implementation of a relaxation technique.

[0079] Furthermore, sympathetic nerve activity generally increases during vigorous exercise, while parasympathetic nerve activity increases after exercise or when relaxing. Therefore, when performing a typical relaxation technique, the user's parasympathetic nerve activity tends to increase. However, when content playback device 200 is used to play content in a virtual reality space and to support the performance of a relaxation technique, sympathetic nerve activity increases for users 20A-20C, while parasympathetic nerve activity significantly decreases. This tendency is unique to the case where content playback device 200 is used to play content in a virtual reality space and to support the performance of a relaxation technique.

[0080] As described above, when content playback device 200 is used to play content in a virtual reality space and to support the implementation of a relaxation technique, the subject enters a state of extremely low arousal, while the subject's physical sympathetic nervous activity is activated. This state is not generally produced by conventional relaxation techniques, and can be said to be a unique effect of using content playback system 1.

[0081] (2.2 Effect assessment method) Next, an effect determination method according to this embodiment will be described. Fig. 6 is a flowchart illustrating the effect determination method according to this embodiment. Note that the effect determination method is performed in parallel with the content playback method described above, and many of its steps overlap with those of the content playback method. Therefore, the overlapping parts will be explained briefly, and the remaining steps will be explained in detail.

[0082] First, steps S203 to S209 and S103 to S111 are performed in the same manner as in the content playback method, and the following steps are performed in order: acquisition of biometric information (S203), generation of stress information (S105), content selection (S107), content playback (S207), acquisition of biometric information (S209), and generation of stress information (S111). Note that if the content is being played for the second time or later, acquisition of biometric information in S203 above becomes S209, and generation of stress information in S105 becomes S111.

[0083] These steps make it possible to acquire biological information and stress information before and after content playback. Therefore, the effectiveness determination unit 130 determines the effectiveness of the content based on changes in the biological information of users 20A to 20C (S115). More specifically, the effectiveness determination unit 130 compares the stress information before and after content playback to determine the effectiveness of the content.

[0084] According to the above, the effectiveness of content can be easily determined, and the accuracy of content selection can be improved based on this.

[0085] <3. Modifications> Next, several modified examples of the above-described embodiment will be described. Note that in the following description, differences from the above-described embodiment will be mainly described, and similar points will not be described. Furthermore, one or more of the following modified examples and the above-described embodiment can be arbitrarily combined as long as they are technically combinable.

[0086] (3.1. Variation 1) Fig. 7 is a block diagram illustrating the functional configuration of a content playback control device according to a modified example. Content playback control device 100A shown in Fig. 7 has a stress information generation unit 110, a playback control unit 120, an effect determination unit 130, a learning unit 140, a storage unit 150, as well as a playback unit 210 and a biological information sensor 220. That is, in this modified example 1, content playback control device 100A is a standalone content playback system that includes a content playback device.

[0087] In this way, by configuring a standalone content playback system, it is not necessary to operate the content playback system via a network. Therefore, by using the content playback control device 100A, it is possible to implement the content playback method even in an environment where there is no network or the network is unstable, and it is possible to support the user in learning and / or practicing movements based on a relaxation technique.

[0088] Furthermore, by configuring a standalone content playback system in this manner, the biometric information of the users 20A to 20C is prevented from being disclosed to the outside of the content playback control device 100, and the personal information of the users 20A to 20C can be more reliably protected. From this perspective, as a further modification, the storage unit 150 of the content playback control device 100A may not store content information, and the content playback control device 100A may download content from an external server each time content is selected. In this case, the users 20A to 20C can always use the latest content stored on the server. In this case, a correspondence table between stress information and corresponding playback candidate content for content selection is periodically transmitted from the server to the content playback control device 100A.

[0089] (3.2. Variation 2) In the above-described embodiment, the content playback control device 100 has been described as including the stress information generation unit 110, the effect determination unit 130, and the learning unit 140. However, in this modification, for example, the content playback device 200 may include any one or more of these units.

[0090] For example, if the content reproduction device 200 has the stress information generation unit 110, there is no need to transmit the biological information of the users 20A to 20C to the content reproduction control device 100, and the protection of the personal information of the users 20A to 20C is more reliable. Also, for example, if the content reproduction device 200 has the learning unit 140, it becomes possible to perform individual learning for the users 20A to 20C, and it becomes possible to select content that is more suitable for each of the users 20A to 20C.

[0091] (3.3. Variation 3) In the above-described embodiment, the content playback device 200 has been described as a head-mounted device. However, in this modification, for example, the content playback device 200 may not be a head-mounted device, but may be, for example, a terminal equipped with a flat panel display and an audio output device. In this case, the audio output device may be a speaker, earphones, or headphones. Furthermore, the content playback device 200 may be composed of only an audio output device.

[0092] (3.4. Variation 4) In the above-described embodiment, the content is described as including video and audio. However, in this modification, for example, the content may be only video or audio. Alternatively, the content may include still images.

[0093] (3.5. Variation 5) In the above-described embodiment, the content playback device 200 is described as including the biometric information sensor 220, and the playback control unit 120 of the content playback control device 100 selects content to play based on stress information derived from the biometric information of the users 20A to 20C, but the present invention is not limited to this. The playback control unit 120 of the content playback device 100 may select content to play according to another algorithm, rather than based on stress information derived from the biometric information of the users 20A to 20C. In this case, the biometric information sensor 220 and the stress information generation unit 110 may be omitted.

[0094] <4. Hardware configuration example> Finally, an example of the hardware configuration of each of the above-mentioned devices will be described with reference to FIGS.

[0095] (4.1. Content Playback Control Device 100) Fig. 8 is a block diagram showing an example of the hardware configuration of a content playback control device according to this embodiment. Note that an information processing device (computer) 900 shown in Fig. 8 may realize, for example, the content playback control device 100 shown in Fig. 1. Information processing by the content playback control device 100 according to this embodiment is realized by cooperation between software and hardware described below. Furthermore, the content playback control device 100 may be realized using a plurality of information processing devices 900.

[0096] 8, the information processing device 900 includes a CPU (Central Processing Unit) 901, a ROM (Read Only Memory) 902, a RAM (Random Access Memory) 903, and a bus 904. The information processing device 900 also includes an interface 905, an input device 906, an output device 907, a storage device 908, a drive 909, a connection port 911, and a communication device 913. Instead of or in addition to the CPU 901, the information processing device 900 may include an electric circuit, a computing device such as a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), or an MPU (Micro Processor Unit), or a semiconductor integrated circuit capable of computing, such as a PLD (Programmable Logic Device) such as an FGPA (Field Programmable Gate Array) or an FPA (Field Programmable Analog Array).

[0097] The CPU 901 is an example of a processor, and functions as an arithmetic processing unit and a control unit, controlling the overall operation of the information processing device 900 in accordance with various programs. The CPU 901 may also be a microprocessor. The ROM 902 stores programs and calculation parameters used by the CPU 901. The RAM 903 temporarily stores programs used in the execution of the CPU 901, parameters that change as appropriate during the execution, and the like.

[0098] The CPU 901, ROM 902, and RAM 903 are interconnected by a bus 904 including a CPU bus, etc. The bus 904 is connected to each unit constituting the information processing device 900 via an interface 905.

[0099] The input device 906 is realized by a device into which a user inputs information, such as a mouse, keyboard, touch panel, button, microphone, switch, or lever. The input device 906 may also be, for example, a remote control device that uses infrared or other radio waves, or an externally connected device such as a mobile phone, tablet, or PDA (Personal Digital Assistant) that is compatible with the operation of the information processing device 900. The input device 906 may also include, for example, an input control circuit that generates an input signal based on information input by the user using the above-mentioned input means and outputs the signal to the CPU 901. By operating the input device 906, the user of the information processing device 900 can input various data to the information processing device 900 and instruct the information processing device 900 to perform processing operations.

[0100] The output device 907 is formed by a device capable of visually or audibly notifying the user of acquired information. Such devices include display devices such as CRT (Cathode Ray Tube) display devices, liquid crystal display devices, plasma display devices, EL (Electroluminescence display) display devices, laser projectors, LED projectors, and lamps, as well as audio output devices such as speakers and headphones. The output device 907 outputs, for example, results obtained from various processes performed by the information processing device 900. Specifically, the output device 907 visually displays the results obtained from various processes performed by the information processing device 900 in various formats such as text, images, tables, and graphs. On the other hand, when an audio output device is used, an audio signal consisting of reproduced audio data, acoustic data, etc. is converted into an analog signal and output audibly.

[0101] The storage device 908 is a data storage device formed as an example of a storage unit of the information processing device 900. The storage device 908 is realized, for example, by a magnetic storage device such as a hard disk drive (HDD), a semiconductor storage device such as a solid state drive (SSD), an optical storage device, or a magneto-optical storage device. The storage device 908 may include a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, and a deletion device that deletes data recorded on the storage medium. The storage device 908 stores programs and various data executed by the CPU 901, as well as various data acquired from the outside. The storage device 908 may perform the functions of the storage unit 150 shown in FIG. 1, for example.

[0102] The drive 909 is a reader / writer for a storage medium, and is built into or externally attached to the information processing device 900. The drive 909 reads information recorded on a removable storage medium such as an attached magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and outputs the information to the RAM 903. The drive 909 can also write information to the removable storage medium.

[0103] The connection port 911 is an interface connected to an external device, and is a connection port for connecting to an external device that can transmit data via, for example, a USB (Universal Serial Bus) or the like.

[0104] The communication device 913 is, for example, a communication interface formed by a communication device or the like for connecting to the network 300. The communication device 913 is, for example, a communication card for a wired or wireless LAN (Local Area Network), LTE (Long Term Evolution), Bluetooth (registered trademark), or WUSB (Wireless USB). The communication device 913 may also be a router for optical communication, a router for ADSL (Asymmetric Digital Subscriber Line), or a modem for various types of communication. The communication device 913 can transmit and receive signals, for example, between the Internet and other communication devices in accordance with a predetermined protocol such as TCP / IP.

[0105] (4.2. Content Playback Device 200 and Content Playback Control Device 100A) Fig. 9 is a block diagram showing an example of the hardware configuration of a content playback device according to this embodiment. Note that an information processing device (computer) 900A shown in Fig. 9 may realize, for example, the content playback device 200 shown in Fig. 2. Information processing by the content playback device 200 according to this embodiment is realized by cooperation between software and hardware described below. Furthermore, the content playback device 200 may be realized using a plurality of information processing devices 900. The same applies to the content playback control device 100A.

[0106] The information processing device 900A is a head-mounted device or an information processing device having a head-mounted device as an output device 907A. From the viewpoint of hardware configuration, the information processing device 900A differs from the information processing device 900 in the configuration of the output device 907A and in that the information processing device 900A has a sensor 915. The following description will focus on the differences from the information processing device 900.

[0107] The output device 907A has an HMD 907B and an audio output device 907C. The HMD 907B is a head-mounted display. When the information processing device 900A itself is a head-mounted device, the output device 907A is physically incorporated into the information processing device 900A. On the other hand, when the output device 907A itself is a head-mounted device, the output device 907A is connected to the information processing device 900A by wire or wirelessly and used.

[0108] The HMD 907B may be a non-transparent, video-transparent, or optically transmissive head-mounted display. The projection format of the HMD 907B may be virtual image projection or retinal projection. The audio output device 907C may be, for example, closed or open headphones or earphones, or a speaker. Depending on the configuration, the output device 907A may also include other output devices, such as an odor generator or a taste and / or tactile stimulation device.

[0109] The sensor 915 is a group of sensors, and includes a pupil diameter sensor 221, a pulse sensor 223, and a respiration sensor 225. The pupil diameter sensor 221 can be, for example, an infrared camera or a night vision camera installed near the HMD 907B facing the user's eyes. The pupil diameter sensor 221 may also have a visible light or infrared light source such as an LED to stably measure the pupil diameter.

[0110] The pulse sensor 223 is a sensor for implementing pulse measurement methods such as photoplethysmography (e.g., transmission pulse wave measurement, reflection pulse wave measurement), electrocardiography, sphygmomanometry, phonocardiography, etc. The breathing sensor 225 may be any of various breathing sensors, such as a piezoelectric type, an ultrasonic type, an optical type (e.g., infrared light), or an electrostatic type. The information processing device 900A may include other sensors as the sensor 915.

[0111] <5. Programs and recording media> The content playback control devices 100, 100A, the content playback device 200 according to the present embodiment, and various methods using them have been described above. Therefore, in another aspect, the present invention also relates to a program for causing a computer to function as these devices. Also provided is a recording medium on which the program is stored.

[0112] <6. Summary> Several embodiments of the present invention have been described above with reference to FIGS. 1 to 9. As described above, the present invention can provide a content playback control device, a content playback device, a content playback system, a content playback method, and a program for supporting the implementation and / or acquisition of relaxation techniques. In particular, by acquiring a user's biometric information and selecting content based on the acquired information, the content playback system can present a relaxation technique tailored to the user's condition. Furthermore, by extracting stress-related information from the user's biometric information, it is possible to present a relaxation technique tailored to the user's condition with high accuracy. Furthermore, in particular, by using a display of a head-mounted device as the content playback device and including content in a virtual reality space, it is possible to provide the user with novel effects not previously available in relaxation techniques. [Example]

[0113] The present invention will be explained in more detail below with reference to examples, but the present invention is not limited to these examples.

[0114] (1) Overview of the test The subjects were subjected to relaxation techniques after physical stress using the following procedure. At each point, their psychological and physiological states were observed, and the psychological and physiological changes experienced when using the content playback system were evaluated.

[0115] The subjects were 18 university students with sports experience, with an average age of 22.3 years. Each subject was required to get sufficient sleep the night before the test and to refrain from taking any substances that could alter the body's functions, such as supplements or caffeinated foods and beverages, on the day of the test. Furthermore, each subject was prohibited from engaging in any exercise activity exceeding their usual daily activity intensity within two hours before the test. Each subject repeated the following steps (i) to (iii) three times over three days, changing the conditions of step (iii) each day.

[0116] (i) Sitting rest First, the subject wore the content reproduction device 200 equipped with the head-mounted display 213 as shown in Figures 1 and 2 on his / her head, sat in a chair, and remained at rest with his / her eyes closed for one minute. The content reproduction device 200 was powered off, and the display 213 was left blank (blacked out).

[0117] (ii) Physical stress load Next, the subject was subjected to physical stress while seated in a chair. Specifically, the subject's arm was placed in a flexed position at the elbow, with the upper arm and forearm at a 140° angle, relative to the dynamometer. The subject then exerted force by pulling the forearm around the elbow, and the resulting force was measured by the dynamometer while the physical stress was applied. First, the subject exerted maximum force twice, and the maximum of the measured values ​​was set as the maximum voluntary contraction (MVC) used in this study. The average MVC was 19.6 kg. Next, a weight was placed on the dynamometer so that a load of approximately 30% of the MVC was applied to the subject's forearm. The subject maintained a flexed position at the elbow, with the upper arm and forearm at a 140° angle, until the subject could no longer maintain the flexed position, thereby applying physical stress to the subject.

[0118] (iii) Implementation of relaxation techniques Next, a relaxation technique was performed on the subjects. All subjects had a content playback device 200 equipped with a head-mounted display 213 as shown in Figures 1 and 2 attached to their heads. On the other hand, when performing the relaxation technique, the conditions were changed as follows on different days:

[0119] Condition 1: A fixation point (+) was displayed on the display 213, and the rest of the display 213 was darkened. In other words, the subject was in a resting state, and no relaxation techniques were performed.

[0120] Condition 2: A fixation point (+) was displayed on the display 213, and the rest of the display 213 was darkened except for the fixation point. Furthermore, a voice prompting the subject to perform autogenic training was output from the head-mounted device, and the subject performed autogenic training following the voice prompt.

[0121] Condition 3: A voice guiding the autogenic training was output from the head-mounted device, and the subject performed autogenic training in accordance with the voice. During this, a gaze point (+) was displayed on the display 213 of the head-mounted device, and video content in the virtual reality space, such as videos encouraging breathing and videos of natural objects such as grasslands, were displayed in sync with the voice.

[0122] (2) Evaluation (a) Psychological testing Each subject underwent psychological testing based on the Two-dimensional Mood Scale-Short Term (TDMS-ST) after (i) sitting and resting, (ii) physical stress, and (iii) relaxation techniques.

[0123] The TDMS-ST is a test that measures subjective mood states, and subjects were asked to respond on a six-point scale from "not at all" to "very much" to the extent to which they felt emotions such as "calm" or "nervous" described in the questionnaire. Based on these responses, the subjects' psychological state was evaluated in terms of activity, stability, comfort, etc.

[0124] As a result, first, stability significantly decreased after (ii) physical stress in all conditions. As a result, it was confirmed that (ii) physical stress had been appropriately induced in the subjects' minds and bodies after the physical stress. On the other hand, after (iii) relaxation techniques were implemented, stability and activity significantly increased, and alertness significantly decreased in all conditions. From the perspective of subjective mood, it was confirmed that the subjects' mood improved in all conditions.

[0125] (b) Ultrasound Ultrasound elastography is a medical technology device that can non-invasively evaluate the stiffness and elasticity of tissues in the body using ultrasound. Using this ultrasound elastography device, we evaluated the viscoelasticity (stiffness) of the biceps brachii muscle of subjects (i) after sitting and resting, (ii) after physical stress, and (iii) after performing relaxation techniques.

[0126] As a result, it was confirmed that under all conditions, (iii) after the relaxation technique, muscle stiffness was significantly reduced and the biceps brachii muscle was significantly relaxed compared to (ii) after physical stress was applied.

[0127] (c) Electroencephalogram (EEG) measurement For each subject, electroencephalograms were measured (i) while sitting and resting, (ii) while under physical stress, and (iii) while performing relaxation techniques. A patch-type electroencephalograph (product name: EEG, PGV Corporation) was placed on the subject's forehead to continuously measure theta, alpha, beta, and gamma waves throughout each of the steps described above, and the state of the electroencephalogram during each step was evaluated. Figures 10 to 13 show the results of each electroencephalogram.

[0128] First, as shown in Figure 13, (ii) during physical stress, the power value of gamma waves in the fast wave band increased under all conditions. This confirmed that (ii) physical stress caused mental and physical stress from the perspective of EEG.

[0129] Next, (iii) during the relaxation technique, as shown in Figure 11, alpha waves were significantly reduced under condition 3 compared to the other conditions. Also, as shown in Figure 10, slow theta waves significantly increased under all conditions. Furthermore, as shown in Figure 13, gamma waves tended to be significantly reduced under conditions 2 and 3 compared to condition 1. This confirmed that when the relaxation technique (autogenic training) was performed, gamma waves were significantly reduced compared to the resting state. Furthermore, as shown in Figure 12, during the relaxation technique (iii), beta waves, which are relatively fast waves, decreased under all conditions.

[0130] Generally, in a relaxed state, slow-wave brain waves increase and fast-wave brain waves decrease. This confirms that when autogenic training is performed under conditions 2 and 3, a more relaxed state than when at rest can be produced. Furthermore, under condition 3, in which video content in a virtual reality space was played, only theta waves, the slowest brain waves measured, increased, confirming that a unique state of relaxation was induced in the subjects compared to the other conditions.

[0131] (d) Electrocardiogram measurement For each subject, electrocardiograms were measured (i) while sitting at rest, (ii) during physical stress, and (iii) during relaxation. The electrocardiogram was continuously monitored throughout each of the steps, and the state of the sympathetic and parasympathetic nervous systems was evaluated for one minute after each step by analyzing the transition of the R-wave interval. The results are shown in Figure 14.

[0132] As shown in Figure 14, the subject's sympathetic nervous activity (LFnu / HFnu) was significantly more active under condition 3 compared to conditions 1 and 2. Furthermore, the subject's parasympathetic nervous activity (HFnu) was significantly lower under condition 3 compared to conditions 1 and 2. This suggests that when autogenic training is performed using content in a virtual reality space, sympathetic nervous activity becomes physically dominant. This suggests that when autogenic training is performed using content in a virtual reality space, a state that encourages physical internal attention, such as that associated with meditation or creative thinking, is induced.

[0133] From the above, it was confirmed that when autogenic training was performed using content in a virtual reality space (condition 3), the brain was hypoaroused, while the sympathetic nervous activity was activated physically, resulting in a unique state of relaxation that differs from when autogenic training was performed using only a resting state (condition 1) or audio (condition 2).

[0134] Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention pertains can conceive of various modifications and alterations within the scope of the technical ideas set forth in the claims, and it is understood that these also naturally fall within the technical scope of the present invention. [Explanation of symbols]

[0135] 1 Content playback system 100, 100A Content playback control device 110 Stress information generation unit 120 Playback control unit 130 Effect Assessment Section 140 Learning Department 150 Storage section 160 Transmitter / Receiver 200, 200A, 200B, 200C Content playback device 210 Playback Department 220 Biometric Sensor 230 Transmitter / Receiver 300 Network

Claims

1. A content playback control device for supporting a user in learning and / or performing a movement based on a relaxation technique, comprising: a content playback control device having a playback control unit that selects one or more pieces of content from a plurality of pieces of content that present the user with actions based on the relaxation technique, and causes the content playback device to play them;

2. The content playback control device according to claim 1 , wherein the playback control unit determines an order of the content to be played back by the content playback device from among the plurality of content items based on the biometric information of the user.

3. further comprising a stress information generating unit that generates stress information of the user based on the biological information, The content reproduction control device according to claim 2 , wherein the reproduction control unit determines an order of the content to be reproduced by the content reproduction device from the plurality of content items based on the stress information.

4. further comprising an effect determining unit that determines an effect of the content based on the content and a change in the biometric information of the user before and after playback of the content; The content playback control device according to claim 2 , wherein the playback control unit determines an order of the content to be played back by the content playback device from the plurality of content items based on the biometric information of the user and the determined effect of the content item.

5. The content playback control device according to claim 2 , wherein the biological information includes information on one or more selected from the group consisting of respiration, pulse, blood pressure, and pupils.

6. The content playback control device according to claim 2 , wherein the biological information includes information relating to pupil diameter.

7. The content playback control device according to claim 1 , wherein the relaxation technique includes one or more selected from the group consisting of breathing techniques, progressive muscle relaxation, and autogenic training.

8. the content playback device is a display of a head-mounted device that is worn on the head of the user, The content playback control device according to claim 1 , wherein the plurality of contents include a content in a virtual reality space.

9. The content reproduction control device according to claim 8 , wherein the reproduction of the content induces amplification of theta waves while suppressing amplification of alpha waves of the user.

10. A content playback device for supporting a user in learning and / or performing a movement based on a relaxation technique, comprising: a playback device that receives information about the content from the content playback control device and plays back the content; The content playback control device selects one or more pieces of content from a plurality of pieces of content that present the user with movements based on the relaxation technique, and causes the content playback device to play the selected pieces of content.

11. The content playback control device further includes a biometric information sensor that acquires biometric information of the user who is viewing the content played back on the playback device, and a transmitter that transmits the biometric information to the content playback control device, The content reproduction device according to claim 10 , wherein the content reproduction control device determines an order of the content to be reproduced by the content reproduction device from the plurality of contents based on biometric information of the user.

12. a display of a head-mounted device worn on the user's head, The content playback device according to claim 11 , wherein the plurality of contents include a content of a virtual reality space.

13. A content playback system for supporting a user in learning and / or performing a movement based on a relaxation technique, comprising: a content playback control device having a playback control unit that selects one or more pieces of content from a plurality of pieces of content that present the user with actions based on the relaxation technique and causes a content playback device to play the selected content; a content playback system including the content playback device, the content playback device having a playback device that receives the content from the content playback control device and plays back the content.

14. 1. A content playback method for supporting a user in learning and / or performing a movement based on a relaxation technique, comprising: determining an order of one or more pieces of content to be reproduced by a content reproduction device from a plurality of pieces of content that present the user with actions based on the relaxation technique; a content playback method for playing back the content to the user in accordance with the determined order;

15. A program for assisting a user in learning and / or performing a movement based on a relaxation technique, Computer, A program for functioning as a content playback control device, having a playback control unit that selects one or more contents from a plurality of contents that present actions based on the relaxation technique to the user and causes the content playback device to play them.

Images