Video playback system

Abstract

This system provides a video playback system that allows users to control and watch cooking videos without interfering with cooking or touching the video playback device. [Solution] A video playback system comprising a wearable device 10 and a video playback device 20 separately equipped in a state where they can communicate with each other, wherein the wearable device 10 includes one or more sensors S that detect the movement of a predetermined part of the body to which it is worn and output a detection signal corresponding to the movement, a signal processing unit 13 that processes the detection signal and outputs a predetermined processing signal, and a signal transmission unit 15 that transmits the processing signal to the video playback device 20, and the video playback device 20 includes a storage unit 23 that stores cooking video data, a display unit 21 that displays the cooking video, a signal receiving unit 24 that receives the processing signal, and a playback control unit 22 that controls the playback operation of the cooking video on the display unit 21 according to the processing signal received by the signal receiving unit 24.

Description

Technical Field

[0001] The present invention relates to a video playback system.

Background Art

[0002] Regarding a recipe to be cooked for the first time, a video explaining specific procedures and operation methods may be referred to. Furthermore, there are many cases where the video is watched while actually cooking. However, when cooking, hands are often wet with water or ingredients adhere to the hands. Therefore, in order to control the cooking video being watched (hereinafter referred to as "playback operation"), specifically, to perform operations such as returning the cooking video being watched to a predetermined playback position, playback stop, and resuming playback, it is necessary to wash hands and wipe the wet hands with a towel or the like, which takes time. Otherwise, there is also a risk that the keyboard, mouse, touch panel, etc. of the terminal playing the cooking video will be soiled, or that miscellaneous bacteria adhering to the hands will be mixed into the ingredients.

[0003] The wearable computer described in Patent Document 1 (Japanese Patent No. 6458507) includes a glasses-type display device in which a display unit configured as a screen composed of half mirrors is arranged in front of the left and right eyes, an image can be displayed on the display unit, and the light transmitted through the display unit reaches the user's eyes. In addition, the glasses-type display device is equipped with a motion sensor that detects acceleration, angular velocity, and geomagnetism, and can detect the movement of the head of the user wearing this glasses-type display device. Then, the movement of the object detected by the motion sensor mounted on the display device, that is, the operation of the user, is converted into a command by the control device, and control of the video corresponding to the command and the like are executed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] When using the apparatus described in Patent Document 1, there is a problem in that it becomes difficult to cook because it is necessary to view the ingredients being cooked through the half-mirror of the glasses-type display device.

[0006] This invention has been made in view of the above-mentioned problems, and its purpose is to provide a video playback system that allows users to control and view cooking videos without interfering with cooking or touching the video playback device. [Means for solving the problem]

[0007] A characteristic configuration of the video playback system according to the present invention for achieving the above objective is a video playback system that separately comprises a wearable device and a video playback device in a state where they can communicate with each other, The wearable device comprises one or more sensors that detect movement of a predetermined part of the human body on which it is worn and output a detection signal corresponding to the movement, a signal processing unit that processes the detection signal and outputs a predetermined processing signal, and a signal transmission unit that transmits the processing signal to the video playback device. The video playback device comprises a storage unit for storing cooking video data, a display unit for displaying the cooking video, a signal receiving unit for receiving the processing signal, and a playback control unit for controlling the playback operation of the cooking video on the display unit in accordance with the processing signal received by the signal receiving unit.

[0008] According to the above configuration, when a wearer of the wearable device performs a predetermined action, the wearable device's sensor outputs a detection signal corresponding to that movement, the signal processing unit outputs a processed signal obtained by processing the detection signal, and the signal transmission unit transmits this processed signal to the video playback device. The playback control unit of the video playback device then controls the playback operation of the cooking video on the display unit according to the processed signal received by the signal receiving unit from the wearable device. In other words, the wearer of the wearable device can issue a command from the wearable device to play the cooking video on a video playback device that is provided separately from the wearable device by moving the part of the body to which the wearable device is attached. This means that the wearer of the wearable device can attach the wearable device to a part of their body that is easy to move, and move that part at the timing when they want to control the playback operation of the cooking video. Furthermore, since the video playback device is a separate device from the wearable device, it does not interfere with cooking and can be installed in a place that is easy to see. Therefore, it is possible to provide a video playback system that allows users to control and view cooking videos without interfering with cooking or touching the video playback device.

[0009] Another characteristic configuration of the video playback system according to the present invention is that the detection signal includes a combination of operation type information and signal strength information that can identify the type of operation of a predetermined part of the human body, The signal processing unit of the wearable device outputs the detection signal whose signal intensity is greater than or equal to a first threshold as the processing signal, and excludes the detection signal whose signal intensity is less than the first threshold from the processing signal. The storage unit of the video playback device stores a table in which the correspondence between the operation type information included in the processing signal and the playback operation is defined. The playback control unit of the video playback device determines the playback operation corresponding to the processing signal received by the signal receiving unit by referring to the table.

[0010] According to the above characteristic configuration, the signal processing unit of the wearable device does not output all detection signals output by the sensor as processed signals, but rather outputs detection signals with a signal intensity of 1 or higher as processed signals. In other words, detection signals output in response to slight movements that are not intentionally made by the wearer of the wearable device to control the playback of cooking videos will have a signal intensity below 1.0, so the signal processing unit excludes such detection signals from the processed signals. As a result, unnecessary processing signals are not output from the signal processing unit and sent to the video playback device, thus reducing the amount of power consumed by the wearable device's battery and decreasing the amount of information communication between the wearable device and the video playback device.

[0011] Another characteristic configuration of the video playback system according to the present invention is that the playback control unit controls the playback operation of the cooking video on the display unit without using the detection signal of a specific operation type.

[0012] The actions of the wearer of a wearable device could unintentionally be used to control the playback of cooking videos. In that case, the cooking video may start playing or fast-forward regardless of the wearer's intentions. Therefore, in this feature configuration, even if the wearer's movements are detected by the sensor, the playback control unit controls the playback of the cooking video on the display unit without using detection signals for specific types of movements. For example, by preventing the use of detection signals output by the sensor in response to movements that the wearer of the wearable device is likely to perform, it is possible to prevent the playback of the cooking video from being controlled by unintended movements of the wearer of the wearable device.

[0013] Another characteristic configuration of the video playback system according to the present invention is that the playback operation is at least one of the following: starting playback of the cooking video, stopping playback, fast forwarding, rewinding, increasing volume, decreasing volume, increasing playback speed, decreasing playback speed, enlarging the screen size, and decreasing the screen size.

[0014] According to the above feature configuration, the wearer of the wearable device can control at least one of the following functions of a cooking video without touching the video playback device: start playback, stop playback, fast forward, rewind, increase volume, decrease volume, increase playback speed, decrease playback speed, enlarge screen size, and decrease screen size.

[0015] Another characteristic configuration of the video playback system according to the present invention is that the signal processing unit does not output the next processing signal for a certain period of time after outputting the processing signal.

[0016] If a wearer of a wearable device moves the device while performing any task, the sensor's detection signal may be repeatedly output with high signal intensity in a short period of time. In that case, the video playback device may repeatedly control the playback of cooking videos in response to each detection signal, potentially making it difficult to comfortably watch the cooking videos. Therefore, with this feature configuration, the signal processing unit does not output the next processing signal for a certain period after outputting the previous processing signal. As a result, it is possible to avoid the video playback device repeatedly controlling the playback operation of cooking videos in a short period of time. [Brief explanation of the drawing]

[0017] [Figure 1] This figure shows a video playback system comprising a wearable device and a video playback device. [Figure 2] This diagram shows the functional blocks of a video playback system that includes a wearable device and a video playback device. [Figure 3] This is an example of a table that defines the correspondence between operation type information and playback operations. [Figure 4] This is an example of another table that defines the correspondence between operation type information and playback operations.

Best Mode for Carrying Out the Invention

[0018] The video playback system according to an embodiment of the present invention will be described below with reference to the drawings. The video playback system of this embodiment separately includes a wearable device 10 and a video playback device 20 in a communicable state with each other. FIG. 1 is a diagram showing a video playback system including the wearable device 10 and the video playback device 20. FIG. 2 is a diagram showing a functional block of the video playback system including the wearable device 10 and the video playback device 20.

[0019] The wearable device 10 includes a sensor S, a signal processing unit 13, a storage unit 14, a signal transmission unit 15, a display unit 16, and an input reception unit 17. As a specific example of the wearable device 10, any device such as a wristwatch-type device, a ring-type device, a glasses-type device, a hat-type device, or a bracelet-type device may be used. In addition, due to the ease of wearing and the ease of detecting a specific movement of the wearer of the video playback terminal described later by the motion determination unit of the wearable device 10, a wristwatch-type device worn on the wrist is preferable for the wearable device 10. In the example shown in FIG. 1, a wristwatch-type wearable device 10 is used.

[0020] The sensor S is composed of one or more sensors that detect the movement of a predetermined part of the human body on which the wearable device 10 is worn and output a detection signal corresponding to the movement. Examples of the sensor S include an acceleration sensor that can detect the acceleration of an object, a gyro sensor that can detect the rotational angular velocity and rotational angular acceleration of an object, a magnetic sensor, and an altitude sensor, and may include a plurality of sensors.

[0021] In this embodiment, the sensor S comprises an accelerometer 11 and a gyroscope 12. Specifically, the accelerometer 11 detects acceleration in each of the three mutually orthogonal axes (X, Y, and Z axes). The gyroscope 12 detects rotational angular acceleration around each of the three mutually orthogonal axes (X, Y, and Z axes). In other words, the detection signal of the sensor S includes motion type information that can identify the type of motion of a predetermined part of the human body to which the wearable device 10 is attached, and information on the signal strength of those accelerations and rotational angular accelerations. Details will be described later, but the motion types are as shown in Figures 3 and 4.

[0022] The signal processing unit 13 processes the detection signal output by the sensor S and outputs a predetermined processing signal. Specifically, the signal processing unit 13 can perform processing such that it outputs a portion of the detection signal output by the sensor S as a processing signal and does not output the remainder as a processing signal (i.e., excludes it).

[0023] To give a specific example, the signal processing unit 13 may set a threshold for the signal intensity of the detection signal to be output as a processing signal. In that case, the signal processing unit 13 can output detection signals with a signal intensity of 1 or greater than the first threshold as a processing signal, and exclude detection signals with a signal intensity of less than the first threshold from the processing signal. For example, the signal processing unit 13 can include the signal intensity of the Y-axis acceleration of the accelerometer 11 in the processing signal if it is 1 or greater than the first threshold, while excluding it from the processing signal if it is less than the first threshold. In this way, detection signals output in response to slight movements that are not intended to control the playback of cooking videos by the wearer of the wearable device 10 will have a signal intensity of 1 or less than the first threshold, so the signal processing unit 13 can exclude such detection signals from the processing signal.

[0024] For example, the first threshold can be set to a value such as 3 (m / (sec·sec)) for the magnitude of acceleration signal strength from the accelerometer 11, and to a value such as 3 (deg / (sec·sec)) for the rotational angular acceleration signal strength from the gyro sensor 12. In this case, the signal processing unit 13 determines that the magnitude of the acceleration signal strength from the accelerometer 11 is equal to or greater than the first threshold if the acceleration signal strength from the accelerometer 11 is greater than or greater than +3 (m / (sec·sec)) or less than or less than -3 (m / (sec·sec)). Also, the signal processing unit 13 determines that the magnitude of the rotational angular acceleration signal strength from the gyro sensor 12 is equal to or greater than the first threshold if the rotational angular acceleration signal strength from the gyro sensor 12 is greater than or greater than +3 (deg / (sec·sec)) or less than or less than -3 (deg / (sec·sec)).

[0025] Alternatively, the signal processing unit 13 may restrict the types of operations of the detection signals it outputs as processing signals. In this case, the signal processing unit 13 can output detection signals of a specific type of operation (for example, a detection signal for an operation that would not be performed during cooking) as processing signals, and not output detection signals of other types of operations (for example, a detection signal for an operation that might be performed during cooking) as processing signals. For example, the Y-axis acceleration value (detection signal) of the accelerometer 11 can be output as a processing signal, while the X-axis acceleration value (detection signal) of the accelerometer 11 can be excluded from the processing signals.

[0026] In this way, the signal processing unit 13 can process the detection signal output by the sensor S so that it outputs a portion of it as a processing signal and does not output the rest as a processing signal. As a result, unnecessary processing signals are not output from the signal processing unit 13 and transmitted to the video playback device 20, thus reducing the amount of power consumed by the battery of the wearable device 10 and reducing the amount of information communicated between the wearable device 10 and the video playback device 20.

[0027] The memory unit 14 stores information handled by the wearable device 10. For example, the memory unit 14 stores information such as the first threshold mentioned above, and information on which type of detection signal to output as a processing signal.

[0028] The signal transmission unit 15 is realized by the wearable device 10's ability to communicate wirelessly with other devices and can transmit processing signals to the video playback device 20. For example, the signal transmission unit 15 enables information communication between the wearable device 10 and the video playback device 20 using Wi-Fi® or Bluetooth®. There are no particular restrictions on the communication method, but WebSocket or Bluetooth® connections are preferred in terms of ease of device setup, availability, ease of connection to the video playback device 20 (described later), and communication speed.

[0029] The display unit 16 provides a function to display information to the wearer of the wearable device 10. The input receiving unit 17 accepts operation input from the wearer of the wearable device 10. For example, the wearer of the wearable device 10 can use the input receiving unit 17 to perform actions such as Bluetooth pairing with the video playback device 20 while viewing the information displayed on the display unit 16.

[0030] The video playback device 20 is a separate device from the wearable device 10 and comprises a display unit 21, a playback control unit 22, a storage unit 23, a signal receiving unit 24, and an input receiving unit 25. The video playback device 20 can be implemented using a device that can communicate with the wearable device 10 and has a video playback function, such as a computer, tablet terminal, smartphone, video player compatible with video playback, or television. The display unit 21 displays the cooking video to be played. The signal receiving unit 24 is implemented by the function of the video playback device 20 to communicate wirelessly with other devices and can receive transmission signals (for example, the processing signals described above) from the signal transmission unit 15 of the wearable device 10.

[0031] The storage unit 23 stores data for cooking videos. This data may include the video file itself, the address of the cloud environment or a specific website where the cooking video is stored, the video ID, etc., and may also include setting information related to video playback, such as volume and screen size. The playback control unit 22 can then display an HTML file on the display unit 21 that allows playback of the cooking video based on the cooking video data stored in the storage unit 23, in response to a command from the wearer of the wearable device 10 received by the input reception unit 25.

[0032] Furthermore, the memory unit 23 stores a table that defines the correspondence between operation type information included in the processing signal and the playback operation. This table will be described later with reference to Figures 3 and 4.

[0033] The playback control unit 22 controls the playback operation of the cooking video on the display unit 21 according to the signal received by the signal receiving unit 24. Specifically, the playback control unit 22 refers to the table stored in the storage unit 23 to determine the playback operation corresponding to the processing signal received by the signal receiving unit 24 and controls the playback operation of the cooking video. For example, the playback operation is at least one of the following: start playback, stop playback, fast forward, rewind, increase volume, decrease volume, increase playback speed, decrease playback speed, enlarge screen size, and shrink screen size. In other words, the playback control unit 22 refers to the table to convert the processing signal received by the signal receiving unit 24 into a control command for the playback operation of the cooking video, and controls the playback operation of the cooking video according to that control command. There are no particular restrictions on how the playback control unit 22 reflects the control command as control for the playback video, but generally, video control commands are passed to the video object embedded in the HTML file using JavaScript.

[0034] Furthermore, while it is preferable for the playback control unit 22 to control playback of the video in real time, such as starting playback, stopping playback, fast-forwarding, and rewinding of cooking videos, it is not necessary to control other functions, such as changing the volume, in real time.

[0035] Figure 3 is an example of a table that defines the correspondence between operation type information included in the processing signal received from the wearable device 10, the second threshold, and the playback operation. Specifically, the playback control unit 22 controls the playback operation of the cooking video corresponding to a predetermined operation type when the signal intensity of that operation type included in the processing signal is greater than or equal to the second threshold.

[0036] Here, the second threshold is greater than the first threshold. In other words, when the magnitude of the signal strength is greater than or equal to the second threshold, that is, when the wearer of the wearable device 10 intentionally moves the wearable device 10 strongly in an attempt to control the playback of the cooking video, the playback of the cooking video will be controlled according to that movement. In the example described above, the first threshold is set to a value such as 3 (m / (sec·sec)) for the signal strength of the accelerometer 11, and to a value such as 3 (deg / (sec·sec)) for the signal strength of the gyro sensor 12, so the second threshold should be set to be greater than those values.

[0037] For example, the second threshold can be set to a value such as 5 (m / (sec·sec)) or 7 (m / (sec·sec)) for the acceleration signal strength of the accelerometer 11, or to a value such as 5 (deg / (sec·sec)) for the rotational angular acceleration signal strength of the gyro sensor 12. In this case, the playback control unit 22 determines that the magnitude of the acceleration signal strength of the accelerometer 11 is equal to or greater than the second threshold if the acceleration signal strength of the accelerometer 11 is +5 (m / (sec·sec)) or greater than or less than -5 (m / (sec·sec)), or equal to or greater than +7 (m / (sec·sec)) or less than or less than -7 (m / (sec·sec)). The playback control unit 22 also determines that the magnitude of the rotational angular acceleration signal strength of the gyro sensor 12 is equal to or greater than the second threshold if the rotational angular acceleration signal strength of the gyro sensor 12 is +5 (deg / (sec·sec)) or greater than or less than -5 (deg / (sec·sec)).

[0038] As shown in Figure 3, the playback control unit 22 interprets a signal containing the message "Y-axis value of acceleration sensor 11 is -5 (m / (sec·sec)) or less" as a control command to switch between starting and stopping playback of the cooking video. In other words, the second threshold in this case is set to 5 (m / (sec·sec)). The playback control unit 22 also interprets a signal containing the message "α value (rotational angular acceleration value around the X axis) of gyro sensor 12 is +5 (deg / (sec·sec)) or more" as a control command to fast-forward the cooking video. In other words, the second threshold in this case is set to 5 (deg / (sec·sec)). Furthermore, the playback control unit 22 interprets a signal containing the message "γ value (rotational angular acceleration value around the Z axis) of gyro sensor 12 is -5 (deg / (sec·sec)) or less" as a control command to rewind the cooking video. In other words, the second threshold in this case is set to 5 (deg / (sec·sec)).

[0039] Furthermore, the movements of the wearer of the wearable device 10 may be unintentionally used to control the playback of the cooking video. In that case, the playback of the cooking video may be started or fast-forwarded regardless of the wearer's intentions. Therefore, the playback control unit 22 may control the playback of the cooking video on the display unit 21 without using processing signals of a specific type of movement. For example, assuming that the wearer of the wearable device 10 is wearing the watch-type wearable device 10 on an arm other than their dominant arm, the playback of the cooking video may be prevented from being controlled by the movements of that non-dominant arm during cooking (i.e., a specific type of movement). For example, the movement of the arm when shaking a frying pan or pot back and forth during stir-frying often appears in the X-axis value of the accelerometer 11 among the detection signals of the sensor S of the wearable device 10. Furthermore, when stir-frying, the arm movement of shaking a frying pan or pot up and down using the wrist as a pivot point is often reflected in the β value (rotational angular acceleration value around the Y axis) of the gyro sensor 12 among the detection signals of the sensor S of the wearable device 10. Therefore, in the example shown in Figure 3, even if the processing signal includes the X-axis value of the acceleration sensor 11, the Z-axis value of the acceleration sensor 11, and the β value (rotational angular acceleration value around the Y axis) of the gyro sensor 12, the playback control unit 22 does not use these signals to control the playback operation of the cooking video. In other words, even if the movement of the wearer of the wearable device 10 is detected by the sensor S, the playback control unit 22 controls the playback operation of the cooking video on the display unit 21 without using detection signals of a specific type of movement. For example, by preventing the use of detection signals output by the sensor S corresponding to movements that the wearer of the wearable device 10 is likely to perform, it is possible to prevent the playback operation of the cooking video from being controlled by unintended movements of the wearer of the wearable device 10.

[0040] Figure 4 is an example of another table that defines the correspondence between operation type information included in the processing signal received from the wearable device 10 and playback operations. As shown in the figure, if the playback control unit 22 receives a signal in the processing signal that indicates "the X-axis value of the acceleration sensor 11 is +7 (m / (sec·sec)) or higher", it interprets that signal as a control command to change the screen size of the cooking video. Furthermore, if the playback control unit 22 receives a signal in the processing signal that indicates "the Y-axis value of the acceleration sensor 11 is -5 (m / (sec·sec)) or lower", it interprets that signal as a control command to fast-forward the cooking video. In addition, if the playback control unit 22 receives a signal in the processing signal that indicates "the Z-axis value of the acceleration sensor 11 is -7 (m / (sec·sec)) or lower", it interprets that signal as a control command to switch between starting and stopping playback of the cooking video. Furthermore, if the playback control unit 22 contains a signal indicating that the α value of the gyro sensor 12 (rotational angular acceleration value around the X axis) is -5 (deg / (sec·sec)) or less, it interprets that signal as a control command to rewind the cooking video. Furthermore, if the playback control unit 22 contains a signal indicating that the β value of the gyro sensor 12 (rotational angular acceleration value around the Y axis) is -5 (deg / (sec·sec)) or less, it interprets that signal as a control command to increase the volume of the cooking video. Furthermore, if the playback control unit 22 contains a signal indicating that the β value of the gyro sensor 12 (rotational angular acceleration value around the Y axis) is +5 (deg / (sec·sec)) or more, it interprets that signal as a control command to decrease the volume of the cooking video. Furthermore, if the playback control unit 22 detects that the processing signal includes a signal indicating that "the γ value of the gyro sensor 12 (rotational angular acceleration value around the Z axis) is -5 (deg / (sec·sec)) or less," it interprets that signal as a control command to change the playback speed of the cooking video.

[0041] <Another Embodiment> In the above embodiment, the configurations of the wearable device 10 and the video playback device 20 were described with specific examples, but their configurations can be changed as appropriate.

[0042] In the above embodiment, an example was described in which the video playback system comprises one wearable device 10 and one video playback device 20. However, the number of wearable devices 10 and video playback devices 20 in the video playback system can be changed as appropriate. For example, the video playback system may comprise one wearable device 10 and multiple video playback devices 20. In that case, the cooking videos displayed on the multiple video playback devices 20 are controlled according to the movements of the wearer of one wearable device 10. For example, the playback operation of cooking videos on multiple video playback devices 20 viewed by students in a cooking class is controlled according to the movements of the instructor, as detected by the sensor S of the wearable device 10 worn by the instructor. Alternatively, the video playback system may comprise multiple wearable devices 10 and one video playback device 20. In that case, the cooking videos displayed on the one video playback device 20 are controlled according to the movements of each wearer of the multiple wearable devices 10. Alternatively, the video playback system may comprise multiple wearable devices 10 and multiple video playback devices 20.

[0043] In the above embodiment, an example was described in which the wearable device 10 and the video playback device 20 perform various processing based on the magnitude of the instantaneous value of the signal intensity of the detected signal. However, various processing may also be performed based on the temporal change pattern of the signal intensity over a certain period of time.

[0044] In the above embodiment, specific examples of the first and second thresholds were given, but these values ​​are provided for illustrative purposes only and can be changed as appropriate.

[0045] In the above embodiment, for example, if the wearer of the wearable device 10 moves the wearable device 10 while performing some task, the detection signal from the sensor S may be repeatedly output with a high signal intensity in a short period of time. In that case, the video playback device 20 may repeatedly control the playback operation of the cooking video in response to each detection signal in a short period of time, which may make it difficult to comfortably watch the cooking video. To avoid this situation, the signal processing unit 13 of the wearable device 10 may process the detection signal output by the sensor S and output a processed signal, and then, even if the sensor S outputs another detection signal, it may refrain from outputting the next processed signal for a certain period of time (e.g., 0.5 seconds). Alternatively, the playback control unit 22 of the video playback device 20 may determine the playback operation corresponding to the processed signal received by the signal receiving unit 24 and control the playback operation of the cooking video, and then, even if the signal receiving unit 24 receives a processed signal from the wearable device 10, it may refrain from controlling the playback operation of the cooking video for a certain period of time (e.g., 0.5 seconds).

[0046] In the above embodiment, an example was described in which the playback control unit 22 of the video playback device 20 determines the playback operation of the cooking video, but the signal processing unit 13 of the wearable device 10 may also determine the playback operation of the cooking video. Specifically, the memory unit 14 of the wearable device 10 stores a table (for example, the table shown in Figures 3 and 4) that defines the correspondence between operation type information included in the detection signal output by the sensor S and the playback operation of the cooking video. The signal processing unit 13 of the wearable device 10 processes the detection signal output by the sensor S, which includes a combination of operation type information that can identify the operation type of a predetermined part of the human body and signal strength information. It determines the playback operation corresponding to the detection signal by referring to the table and outputs the result of this determination (for example, a control command for playback operation such as start playback or stop playback) as a processing signal. The signal transmission unit 15 of the wearable device 10 transmits the processing signal to the video playback device 20. The signal receiving unit 24 of the video playback device 20 receives the processing signal sent from the wearable device 10. The playback control unit 22 of the video playback device 20 may control the playback operation of the cooking video on the display unit 21 according to the processing signal received by the signal receiving unit 24 (for example, a control command for playback operation such as start playback or stop playback).

[0047] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, provided that no inconsistencies arise. Moreover, the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0048] This invention can be used in a video playback system that allows users to control and view cooking videos without interfering with cooking or touching the video playback device. [Explanation of symbols]

[0049] 10: Wearable devices 13: Signal Processing Unit 14: Storage section 15: Signal transmission unit 16: Display section 20: Video playback device 21:Display section 22: Regeneration Control Unit 23: Storage section 24: Signal receiving unit S: Sensor

Claims

1. A video playback system comprising a wearable device and a video playback device separately in a state where they can communicate with each other, The wearable device comprises one or more sensors that detect movement of a predetermined part of the human body on which it is worn and output a detection signal corresponding to the movement, a signal processing unit that processes the detection signal and outputs a predetermined processing signal, and a signal transmission unit that transmits the processing signal to the video playback device. The video playback device is a video playback system comprising: a storage unit for storing cooking video data; a display unit for displaying the cooking video; a signal receiving unit for receiving the processing signal; and a playback control unit for controlling the playback operation of the cooking video on the display unit in accordance with the processing signal received by the signal receiving unit.

2. The detection signal includes a combination of operation type information and signal strength information that can identify the type of operation of a predetermined part of the human body. The signal processing unit of the wearable device outputs the detection signal whose signal intensity is greater than or equal to a first threshold as the processing signal, and excludes the detection signal whose signal intensity is less than the first threshold from the processing signal. The storage unit of the video playback device stores a table in which the correspondence between the operation type information included in the processing signal and the playback operation is defined. The video playback system according to claim 1, wherein the playback control unit of the video playback device determines the playback operation corresponding to the processing signal received by the signal receiving unit by referring to the table.

3. The video playback system according to claim 2, wherein the playback control unit controls the playback operation of the cooking video on the display unit without using the processing signal of a specific operation type.

4. The video playback system according to any one of claims 1 to 3, wherein the playback operation is at least one of starting playback of the cooking video, stopping playback, fast forwarding, rewinding, increasing volume, decreasing volume, increasing playback speed, decreasing playback speed, enlarging screen size, and decreasing screen size.

5. The video playback system according to any one of claims 1 to 3, wherein the signal processing unit does not output the next processing signal for a certain period of time after outputting the processing signal.

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