JP7091229B2 - Content playback system and program - Google Patents

Description

The present invention relates to a content reproduction system and a program.

When playing content including acoustic data (hereinafter referred to as acoustic content), the playback time of the acoustic content may be limited depending on the user's situation or the like. In such a case, it may be requested to select and reproduce the acoustic content having a length corresponding to the limited reproduction time.

Patent Document 1 discloses a content pacing service in which content is consumed during a set duration or a variable duration, and a part of the content item is transmitted within a set duration in which the user consumes the content. To. In particular, it is disclosed that the rate at which content is transmitted is increased or decreased so that the gauge points within the content item are reached before or after the end of the duration of the user's content consumption.

Japanese Patent Publication No. 2015-530769

When playing back content including acoustic data, depending on the user's situation, it may be desired to dynamically control not only the length of the playback time but also the playback mode such as volume and playback speed. For example, when playing aloud voice or music when putting a child to sleep, if the scene where the continuation is worrisome is read or a lively music is played, it will rather hinder falling asleep. Therefore, it is desirable to control the reproduction of acoustic content so as not to interfere with falling asleep.

It is an object of the present invention to reproduce the acoustic content at bedtime and the like, and to control the reproduction of the acoustic content so as not to interfere with the bedtime.

The present invention that achieves the above object estimates a content acquisition means for acquiring content including acoustic data and a time from the start of playback of the content acquired by the content acquisition means until the user falls asleep. The content acquired by the sleep onset time estimation means and the content acquisition means is played back, and based on the time estimated by the sleep onset time estimation means, the volume and the volume of the content in the playback are determined according to the elapsed time from the start of playback of the content. It is characterized by comprising a reproduction control means for controlling at least one of the reproduction speeds.
More specifically, the reproduction control means controls to reduce the volume of the content when the elapsed time from the start of reproduction of the content reaches a predetermined reference time.
Further, the reproduction control means controls to reduce the reproduction speed of the content when the elapsed time from the start of reproduction of the content reaches a predetermined reference time.
Further, in the present invention described above, the configuration may further include a sleep onset determining means for determining that the user has fallen asleep. Then, when it is determined by the sleep onset determination means that the user has fallen asleep during the reproduction of the content, the reproduction control means stops the reproduction of the content.
Further, if the playback control means finishes playing the content before it is determined by the sleep onset determining means that the user has fallen asleep, the playback control means may replay the content at the volume and the playback speed immediately before the end of the playback. ..
Further, in the present invention, in addition to the above-mentioned sleep onset determination means, a configuration may be further provided with storage means for accumulating information on the time from the start of playback of the content to the determination by the sleep onset determination means that the user has fallen asleep. .. Then, the sleep onset time estimation means estimates the time from the start of playing the content to the user falling asleep based on the information accumulated by the storage means.
In addition, another invention that achieves the above object is a sleep onset time estimation means that estimates the time from the start of playback of content including acoustic data until the user falls asleep, and the sleep onset time required for playback. From the start of playback of the content acquisition means for acquiring the content corresponding to the time estimated by the estimation means and the content acquired by the content acquisition means based on the time estimated by the sleep onset time estimation means. It is characterized by comprising a reproduction control means for controlling the reproduction of this content according to the elapsed time of the content.
Further, in the present invention described above, a sleep onset determining means for determining that the user has fallen asleep, a storage means for accumulating information on the time from the start of playback of the content to the determination by the sleep onset determining means for the user to fall asleep. It may be configured to further include. Then, the sleep onset time estimation means estimates the time from the start of playing the content to the user falling asleep based on the information accumulated by the storage means.
Further, more specifically, the reproduction control means controls at least one of the volume and the reproduction speed in the reproduction of the content according to the elapsed time from the start of the reproduction of the content.
The present invention is also realized as a program that controls a computer to realize each function of the above-mentioned system, or a program that causes a computer to execute a process corresponding to each step in the above method. This program can be provided by storing it in a magnetic disk, an optical disk, a semiconductor memory, or other recording medium and distributing it, or by distributing it via a network.

According to the present invention, it is possible to reproduce the acoustic content at bedtime and the like, and to control the reproduction of the acoustic content so as not to interfere with the bedtime.

It is a figure which shows the whole structure of the content reproduction system by this embodiment. It is a figure which shows the functional structure of a terminal apparatus. It is a figure which shows the functional structure of a content server. It is a flowchart which shows the operation at the time of sound content acquisition by a terminal device. 5A is a diagram showing an example of an operation screen when acquiring acoustic content, FIG. 5A is a diagram showing an example of an operation screen when requesting acquisition of acoustic content, and FIG. 5B is a diagram showing an example of an operation screen when requesting acquisition of acoustic content. It is a figure which shows the example of the operation screen at the time of selecting an acoustic content from a list. It is a flowchart which shows the operation at the time of an acoustic content reproduction by a terminal apparatus. It is a time chart showing the state of reproduction of acoustic content.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<System configuration>
FIG. 1 is a diagram showing an overall configuration of a content reproduction system according to the present embodiment. The content reproduction system includes a terminal device 100 and a content server 200. The terminal device 100 and the content server 200 are connected to each other via the network 300. The terminal device 100 is a data processing device that reproduces acoustic content. In the present embodiment, the acoustic content is content including acoustic data, and may be content having moving image data and still image data together with acoustic data. The content server 200 is a server that manages acoustic content and provides it in response to a request from the terminal device 100.

The type of the network 300 is not particularly limited as long as it is a communication network used for data communication between each device, and may be, for example, a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, or the like. The communication line used for data communication may be a combination of these, regardless of whether it is wired or wireless. Further, a relay device such as a gateway device or a router may be used to connect each device via a plurality of networks or communication lines.

<Configuration of terminal device>
The terminal device 100 is a device that acquires and reproduces acoustic content from the content server 200. The terminal device 100 is realized by various information devices capable of exchanging data with the content server 200 via the network 300. For example, it may be a personal computer (PC), a portable information device such as a tablet terminal or a smartphone, or a dedicated terminal.

FIG. 2 is a diagram showing a functional configuration of the terminal device 100. The terminal device 100 includes a sleep onset determination unit 110, a sleep onset information storage unit 111, a sleep onset time estimation unit 120, a content acquisition unit 130, a playback control unit 140, an acoustic output unit 141, a display unit 150, and operation acceptance. A unit 160 and a communication unit 170 are provided. Hereinafter, in the present embodiment, the transition to the sleeping state is also referred to as “sleep onset”. In addition, the word "sleeping" is used only as a word indicating entering the bed, and is not used in the sense of transitioning to a sleeping state.

The sleep onset determination unit 110 determines whether or not the user to be determined has fallen asleep. The sleep onset determination unit 110 detects the state of the user and determines whether or not the user has fallen asleep based on the change. As an index (detection target) representing the state of the user, for example, an action of the user, a voice emitted by the user, or the like is used. Specifically, for example, the action of the user turning over, biological information such as heart rate and body temperature, rhythm and depth of respiration may be detected. As a detection method, a portable information device such as a smartphone equipped with an accelerometer is placed on the bedside or bedding, and the movement of the bedding that occurs when the user rolls over is detected by the accelerometer. May determine whether or not he has fallen asleep. Further, it may be determined whether or not the user has fallen asleep by detecting changes in these biological information using a wearable terminal capable of measuring heart rate, body temperature, skin conductivity and the like. Further, it may be determined whether or not the user has fallen asleep by detecting a heartbeat or a breathing pattern using Wi-Fi radio waves in the room. Further, it may be determined whether or not the user has fallen asleep by acquiring and analyzing the user's image using a camera installed in the room. In addition, various existing techniques used for determining whether or not the user has fallen asleep may be used for the determination by the sleep onset determination unit 110.

Based on the determination result of the sleep onset determination unit 110, the sleep onset information storage unit 111 includes user information including the time from the start of playback of the acoustic content to the determination that the user has transitioned to the sleep state (hereinafter, sleep onset information). ) Is memorized and accumulated. The sleep onset information storage unit 111 is realized by, for example, a storage device (magnetic disk device, non-volatile memory, etc.) provided in the terminal device 100. Further, the sleep onset information storage unit 111 may be realized by an external storage device to which the terminal device 100 can be connected.

The sleep-onset time estimation unit 120 estimates the time from when the user starts playing the acoustic content to when the user falls asleep (hereinafter referred to as the sleep-onset time). The sleep onset time is estimated by a statistical method using, for example, various information considered to be related to sleep. Information related to sleep (hereinafter referred to as sleep-related information) includes, for example, age, gender, bedtime, time and length of nap, time from bathing to bedtime, time after meal to bedtime, and bedtime. Information such as the type and time of exercise performed within the previous fixed time can be considered. Specifically, for example, a database that stores data in which these sleep-related information and sleep-onset time are associated with each other is constructed, and the sleep-onset time in the data having the highest degree of similarity of the user's sleep-related information is used as the user's sleep-onset time. It may be an estimated value of time. The similarity of sleep-related information may be expressed by, for example, a vector having each item of sleep-related information as an element, and may be determined by using an existing method for determining the similarity between vectors. The database of sleep-related information may be provided by an external database server that can be connected from the terminal device 100.

Further, the estimation result using the above database may be corrected by using the user's own sleep onset information stored in the sleep onset information storage unit 111. For example, it was recorded as the sleep onset time and the sleep onset information estimated using the database on condition that the sleep onset information stored in the sleep onset information storage unit 111 reached a predetermined number of days (first threshold value). The average value with the sleep onset time may be used as an estimated value. Further, on condition that the sleep onset information reaches a predetermined number of days (second threshold value), which is larger than the first threshold value, the sleep onset information is recorded as the sleep onset information instead of the sleep onset time estimated using the database. The average value of the sleep onset time may be used as an estimated value.

The content acquisition unit 130 acquires the acoustic content of the reproduction time corresponding to the sleep onset time estimated by the sleep onset time estimation unit 120 from the content server 200. First, the content acquisition unit 130 transmits information on the sleep onset time estimated by the sleep onset time estimation unit 120 to the content server 200, and acquires information on acoustic content (for example, a list) corresponding to the sleep onset time from the content server 200. The acoustic content corresponding to the sleep onset time is an acoustic content such that the difference between the reproduction time and the sleep onset time is within a certain time. The content acquisition unit 130 presents the information of the acoustic content received from the content server 200 to the user, and accepts the selection by the user. Then, the content acquisition unit 130 acquires the acoustic content selected by the user from the content server 200.

The reproduction control unit 140 reproduces the acoustic content acquired by the content acquisition unit 130. Further, the reproduction control unit 140 controls the reproduction of the acoustic content according to the elapsed time from the start of reproduction based on the sleep onset time estimated by the sleep onset time estimation unit 120. Further, the reproduction control unit 140 stops the reproduction of the acoustic content when the sleep onset determination unit 110 determines that the user has entered the sleep state.

The reproduction control of the acoustic content by the reproduction control unit 140 is specifically performed by lowering the volume or slowing down the reproduction speed. For example, assuming that the estimated sleep onset time is 20 minutes, in the example of controlling the volume, the volume is lowered 10 minutes after the start of playback, and the volume is further lowered 15 minutes after the start of playback. Control. Similarly, in the example of controlling the reproduction speed, the reproduction speed is slowed down when 10 minutes have passed from the start of reproduction, and the reproduction speed is further slowed down when 15 minutes have passed from the start of reproduction. It may be possible for the user to set whether to control only one of the volume control and the playback speed, or both. Further, the time for executing the control and the control content (how much the volume and the playback speed are changed) may be set by the user. Further, the control that can be executed may be limited depending on the type of acoustic content. For example, in the case of reading aloud text, the volume may be reduced and the reading speed may be slowed down, and in the case of music, the volume may be reduced but the playback speed may not be changed.

The acoustic output unit 141 outputs the acoustic content reproduced by the reproduction control unit 140. The acoustic output unit 141 is realized by, for example, the built-in speaker of the terminal device 100. Further, the acoustic output unit 141 may be configured as a line output mechanism, and an external speaker, headphones, or the like may be connected to perform acoustic output.

The display unit 150 has an information display screen for displaying information (for example, a list) of acoustic content acquired from the content server 200 by the content acquisition unit 130 and various other information, and input and setting of execution instructions for each of the above functions. It is a device that displays an operation screen that accepts the operation of. The display unit 150 is realized by a display device such as a liquid crystal display, for example.

The operation receiving unit 160 accepts an operation performed by the user based on the operation screen displayed on the display unit 150. The operation receiving unit 160 receives an operation on the operating device by the user. As the operation device, for example, a pointing device such as a mouse, or various existing devices such as a keyboard and a touch panel may be used.

The communication unit 170 is a network interface for connecting to the content server 200 via the network 300. As the communication unit 170, a wireless communication device or a wired interface is used depending on the type of connection line to the available network.

The terminal device 100 includes a processing device that performs data processing and device control. The processing device is realized by, for example, a CPU, a ROM (Read Only Memory), and a RAM which is a working memory. A program for controlling the operation of the terminal device 100 is stored in the ROM, and the CPU executes various operation controls and processes by reading the program from the ROM and executing the program. Each function of the sleep onset determination unit 110, the sleep onset time estimation unit 120, the content acquisition unit 130, and the reproduction control unit 140 is realized by this processing device.

<Content server configuration>
The content server 200 is a server that manages acoustic content and provides it to the terminal device 100. The content server 200 may be realized by a single server machine connected to the network 300, or may be realized as a so-called cloud server in which the functions are distributed to a plurality of servers provided on the network 300. ..

FIG. 3 is a diagram showing a functional configuration of the content server 200. The content server 200 includes a communication control unit 210, a content holding unit 220, a content management unit 230, a content distribution control unit 240, and a communication unit 250.

The communication control unit 210 controls communication with the terminal device 100. The communication control unit 210 receives information on the sleep onset time and a request for acoustic content from the terminal device 100. Further, the communication control unit 210 transmits information on acoustic content (for example, a list) and acoustic content to the terminal device 100.

The content holding unit 220 holds acoustic content. The acoustic content held by the content holding unit 220 may include various types of acoustic data such as music, audio content, and environmental sound.

The content management unit 230 classifies and manages the acoustic content held in the content holding unit 220. In addition, the content management unit 230 manages information on the reproduction time when each acoustic content is reproduced as standard. The acoustic content is classified, for example, based on the relevant information of the acoustic content. The information used as related information may be any information that can be used for classification of acoustic content, and the content and the particle size of the classification information are not particularly limited. Specifically, the related information may include, for example, a rough type such as a music piece, an audio content, or an environmental sound. Further, if it is a musical piece, it may include information used for classifying the musical piece, such as a type of music such as classical music and pop music, a composer, a performer, and the like. Further, if it is an audio content, it may include information used for classifying the audio content such as a type of content such as reading and speech, a type of reading content such as story and news content, and a speaker.

The content distribution control unit 240 returns the information (for example, a list) of the acoustic content corresponding to the requested condition to the terminal device 100 in response to the request from the terminal device 100. Further, the content distribution control unit 240 reads the designated acoustic content from the content holding unit 220 and returns it to the terminal device 100 in response to the request from the terminal device 100.

The communication unit 250 is a network interface for connecting to the terminal device 100 via the network 300. As the communication unit 250, an interface corresponding to the type of connection line to the available network is used.

<Operation when acquiring acoustic content of the terminal device>
FIG. 4 is a flowchart showing an operation when the terminal device 100 acquires acoustic content. The terminal device 100 displays an operation screen on the display unit 150 and accepts input of acquisition conditions for acoustic content (S401). As the acquisition condition, information such as the type of acoustic content to be reproduced (information used for classification of acoustic content) is input. The content acquisition unit 130 of the terminal device 100 transmits an acquisition request for acoustic content to the content server 200 together with the input acquisition conditions and the information on the sleep onset time estimated by the sleep onset time estimation unit 120 (S402). In S401, the reproduction time of the acoustic content may be input as one of the acquisition conditions. In this case, the sleep-onset time estimation unit 120 may transmit the playback time information input in S401 to the content server 200 instead of the sleep-onset time estimated by the sleep-onset time estimation unit 120.

When the content server 200 receives an acquisition request for acoustic content from the terminal device 100, the content distribution control unit 240 obtains a list of acoustic content corresponding to these conditions based on the acquisition conditions and sleep onset time information received together with the request. Create and return to the terminal device 100. When the terminal device 100 receives the list of acoustic contents from the content server 200, the terminal device 100 displays an operation screen including the list on the display unit 150 (S403, S404). The user can refer to the list displayed on the display unit 150 and select the acoustic content to be played.

When the content acquisition unit 130 accepts the user's selection of acoustic content (S405). Information on the selected acoustic content is transmitted to the content server 200 (S406). In response to this, the content server 200 reads the selected acoustic content from the content holding unit 220 and transmits it to the terminal device 100. The content acquisition unit 130 of the terminal device 100 receives the acoustic content transmitted from the content server 200 and holds it in the storage device (S407).

<Example of operation screen>
FIG. 5 is a diagram showing an example of an operation screen when acquiring acoustic content. FIG. 5A is a diagram showing an example of an operation screen when requesting acquisition of acoustic content, and FIG. 5B is a diagram showing an example of an operation screen when selecting acoustic content from a list. be.

As shown in FIG. 5A, the operation screen 151 for inputting acquisition conditions when making an acquisition request for acoustic content includes a condition display unit 151a, a determination button 151b, and an end button 151c. The condition display unit 151a displays the acquisition conditions input by the user by operating the operating device. In the example shown in FIG. 5A, the acquisition condition in which the user identification information (column indicated as "user" in the figure) and the identification information of the acoustic content (column indicated as "content" in the figure) are input. Is displayed as.

The identification information of the acoustic content may not be the information that specifies the specific acoustic content, but may be the information that specifies the classification such as the type of the acoustic content. When inputting the identification information of the acoustic content, for example, a classification list corresponding to the classification by the content management unit 230 of the content server 200 is displayed by a pull-down menu or the like, and the user selects a specific classification from the displayed classification list. You may try to do it.

When the enter button 151b is selected after the acquisition condition is input on the operation screen 151, the acquisition request of the acoustic content is made together with the information of the user's sleep onset time specified by the input acquisition condition and the user's identification information. It is transmitted from the terminal device 100 to the content server 200. Further, when the end button 151c is selected, the operation screen 151 is closed and the operation is completed without transmitting the acquisition request of the acoustic content.

As shown in FIG. 5B, the operation screen 152 for selecting acoustic content from the list has a list display unit 152a, a decision button 152b, and an end button 152c. The list display unit 152a displays a list of acoustic contents received from the content server 200. The acoustic content included in this list is the acoustic content corresponding to the acquisition condition input by the operation screen 151 shown in FIG. 5A. The user operates the operating device to select acoustic content from the list.

When the enter button 152b is selected after the acoustic content is selected on the operation screen 152, the information designating the selected acoustic content as the acquisition target is transmitted from the terminal device 100 to the content server 200. Further, when the end button 152c is selected, the operation screen 152 is closed and the operation is completed without transmitting the information for specifying the acoustic content.

<Operation during playback of acoustic content on the terminal device>
FIG. 6 is a flowchart showing an operation during reproduction of acoustic content by the terminal device 100. In this operation example, the reproduction control unit 140 of the terminal device 100 controls the reproduction of the acoustic content in two stages. Here, the reproduction control unit 140 changes the reproduction speed and the volume of the acoustic content as the reproduction control. Further, two reference times T1 and T2 are set as timings for the reproduction control unit 140 to control the reproduction of the acoustic content.

The reproduction control unit 140 of the terminal device 100 receives an instruction from the user to start reproducing the acoustic content, and starts reproducing the acoustic content acquired from the content server 200 (S601). When the elapsed time after the start of reproduction reaches T1 at the first reference time, the reproduction control unit 140 changes the reproduction speed and volume of the acoustic content (S602, S603). Here, the reproduction speed of the acoustic content is slowed down by one step, and the volume is lowered by one step.

Next, when the elapsed time after the start of reproduction reaches the second reference time T2, the reproduction control unit 140 changes the reproduction speed and volume of the acoustic content again (S604, S605). Here, the reproduction speed of the acoustic content is further reduced by one step, and the volume is further reduced by one step. As a result, after the second reference time T2, the reproduction speed of the acoustic content is reduced by two steps and the volume is reduced by two steps as compared with the standard reproduction at the start of reproduction.

After that, when the sleep onset determination unit 110 of the terminal device 100 determines that the user has entered the sleep state (YES in S606), the reproduction control unit 140 stops the reproduction of the acoustic content (S608). If it is not determined that the user has entered the sleep state (NO in S606), the reproduction control unit 140 continues the reproduction in the state controlled by S605 until the reproduction of the acoustic content is completed, and then stops. (S607, S608).

FIG. 7 is a time chart showing how the acoustic content is reproduced. The example shown in FIG. 7 is an example of the operation described with reference to FIG. As shown in FIG. 7, in the section L1 from the start of reproduction to T1 at the first reference time, the reproduction control unit 140 of the terminal device 100 performs normal reproduction. Then, in the section L2 from the first reference time T1 to the second reference time T2, the reproduction control unit 140 reproduces the acoustic content by slowing down the reproduction speed by one step and reducing the volume by one step. Further, in the section L3 from the second reference time T2 to the time when the user is determined to have transitioned to the sleep state by the sleep onset determination unit 110 (described as “sleep onset” in the figure), the reproduction control unit 140 determines the reproduction speed. The sound content is played by further slowing it down by one step and reducing the volume by one step further. When the reproduction of the acoustic content is completed without the user being determined by the sleep onset determination unit 110 to have entered the sleep state, the section L3 is from the second reference time T2 to the time when the reproduction of the acoustic content is completed.

The first reference time T1 and the second reference time T2 may be set to appropriate initial values in advance, or may be set individually by the user. As an example, the length (reproduction time) when the acoustic content is normally reproduced may be set to L0, and initial values may be set such as L1 = 1 / 2L0, L2 = 1 / 2L1 and the like. Further, the length of L1 is not based on the length (reproduction time) when the acoustic content is normally reproduced, but in consideration of the reproduction speed changed between T1 at the first reference time and T2 at the second reference time. May be set to 1/2 of the total length, L2 may be set to 1/4 of the total length, and the like. The operation described with reference to FIGS. 6 and 7 is merely an example, and the reproduction control of the acoustic content is not limited to the above contents. For example, the reproduction speed and the volume may be changed in three or more steps or in one step. Further, control may be performed so as to change only one of the reproduction speed and the volume according to the stage of the reproduction control.

Further, in the operation example described with reference to FIG. 6, after the elapsed time after the start of reproduction reaches the second reference time T2, it is determined by the sleep onset determination unit 110 that the user has fallen asleep during the reproduction of the acoustic content. In this case, it was decided to stop the reproduction of the acoustic content (see S606 and S608). On the other hand, even before the elapsed time after the start of reproduction reaches T2 at the second reference time or T1 at the first reference time, when the sleep onset determination unit 110 determines that the user has fallen asleep, the acoustic content is reproduced. May be controlled to stop.

Further, in the operation example described with reference to FIG. 6, if the reproduction of the acoustic content is completed before the user is determined to have fallen asleep by the sleep onset determination unit 110, the operation is stopped as it is (see S607 and S608). On the other hand, the acoustic content may be repeatedly reproduced without stopping the reproduction operation of the acoustic content. In this case, the audio content may be reproduced at the volume and reproduction speed immediately before the end of reproduction (in the example of FIGS. 6 and 7, the volume and reproduction speed in the section L3 after the second reference time T2).

<Application example>
The content reproduction system of the present embodiment can be applied to reproduce audio content in which texts such as so-called audio books are read aloud or acoustic content such as music that relaxes the mind and body at bedtime. Further, the content reproduction system of the present embodiment may be used not only when the user himself / herself goes to bed but also when the infant is put to sleep. In this case, it is conceivable to stop the crying infant from crying, relax and put it to sleep. For example, the terminal device 100 is provided with a detection means for detecting the crying of an infant. This detection means is realized by, for example, a voice data acquisition device such as a microphone and a detection processing unit for identifying crying voices. The function of the detection processing unit is realized, for example, by the CPU executing a program stored in the ROM. When the detecting means detects the crying voice of the infant, the content acquisition unit 130 acquires the acoustic content prepared for stopping or relaxing the infant from the content server 200. Then, the reproduction control unit 140 controls the reproduction of the acquired acoustic content. When the playback control of the acoustic content is performed according to the crying voice, the control may be performed to change the volume and the playback speed on the condition that the infant stops crying (the crying voice is no longer detected).

Although the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the above embodiments. For example, in the above embodiment, as a method of estimating the sleep onset time, it is initially estimated by referring to a database of sleep-related information, and as the user's own sleep onset information is accumulated, the user's own sleep onset information is accumulated. The method of switching to the estimation based on is explained. On the other hand, as the initial value of the sleep onset time, a value appropriately set by the user may be used.

Further, in the above embodiment, in response to the request for acquisition of acoustic content from the terminal device 100, the content server 200 first returns a list of acoustic content corresponding to the acquisition condition to the terminal device 100, and from this list. The selected acoustic content has been sent. On the other hand, instead of using the list of acoustic contents, a specific acoustic content may be specified in the terminal device 100 from the beginning and acquired from the content server 200. Further, in response to a request for acquisition of acoustic content from the terminal device 100, the content server 200 may specify the acoustic content to be provided and transmit it to the terminal device 100 without creating a list. In addition, various changes and alternative configurations that do not deviate from the scope of the technical idea of the present invention are included in the present invention.

100 ... Terminal device, 110 ... Sleep onset determination unit, 111 ... Sleep onset information storage unit, 120 ... Sleep onset time estimation unit, 130 ... Content acquisition unit, 140 ... Playback control unit, 150 ... Display unit, 160 ... Operation reception unit, 170 ... Communication unit, 200 ... content server, 210 ... communication control unit, 220 ... content holding unit, 230 ... content management unit, 240 ... content distribution control unit, 250 ... communication unit, 300 ... network

Claims (10)

Content acquisition means for acquiring content including acoustic data,
A sleep-onset time estimation means that estimates the time from the start of playback of the content acquired by the content acquisition means until the user falls asleep, and a sleep-onset time estimation means.
The content acquired by the content acquisition means is played, and based on the time estimated by the sleep onset time estimation means, the volume and the playback speed in the playback of the content are determined according to the elapsed time from the start of playback of the content. Reproduction control means that controls at least one,
A content playback system characterized by being equipped with. The content reproduction system according to claim 1, wherein the reproduction control means reduces the volume of the content when the elapsed time from the start of reproduction of the content reaches a predetermined reference time. The reproduction control means according to claim 1 or 2, wherein when the elapsed time from the start of reproduction of the content reaches a predetermined reference time, the reproduction speed of the content is reduced. Content playback system. Further provided with a sleep onset determination means for determining that the user has fallen asleep,
One of claims 1 to 3, wherein the reproduction control means stops the reproduction of the content when it is determined by the sleep onset determination means that the user has fallen asleep during the reproduction of the content. Content playback system described in. The reproduction control means is characterized in that, when the reproduction of the content is completed before the user is determined to have fallen asleep by the sleep onset determination means, the content is reproduced again at the volume and the reproduction speed immediately before the end of the reproduction. The content reproduction system according to claim 4. Further provided with a storage means for accumulating information on the time from the start of playback of the content to the determination by the sleep onset determination means that the user has fallen asleep.
The fourth aspect of the present invention is characterized in that the sleep onset time estimation means estimates the time from the start of playback of the content to the user falling asleep based on the information stored by the storage means. Content playback system. A sleep-onset time estimation means that estimates the time from the start of playback of content including acoustic data until the user falls asleep.
A content acquisition means for acquiring the content corresponding to the time required for reproduction corresponding to the time estimated by the sleep onset time estimation means, and
A playback control means that reproduces the content acquired by the content acquisition means and controls the reproduction of the content according to the elapsed time from the start of reproduction of the content based on the time estimated by the sleep onset time estimation means. When,
A content playback system characterized by being equipped with. A sleep onset determination means for determining that the user has fallen asleep,
Further provided with a storage means for accumulating information on the time from the start of reproduction of the content to the determination by the sleep onset determination means that the user has fallen asleep.
The seventh aspect of the present invention is characterized in that the sleep onset time estimation means estimates the time from the start of playback of the content to the user falling asleep based on the information accumulated by the storage means. Content playback system. The seventh or eighth aspect of the present invention, wherein the reproduction control means controls at least one of the volume and the reproduction speed in the reproduction of the content according to the elapsed time from the start of the reproduction of the content. Content playback system. On the computer
A function to estimate the time from the start of playback of content including acoustic data until the user falls asleep, and
The function of acquiring the content corresponding to the time estimated by the function and the time required for playback, and
A function to play the acquired content and control at least one of the volume and the playback speed in the playback of the content according to the elapsed time from the start of playback of the content based on the estimated time.
A program characterized by the realization of.

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