JP6632660B2 - Video playback device, control method therefor, and program - Google Patents

Description

  The present invention relates to an image reproducing apparatus capable of reproducing a desired image from images picked up by a number of image pickup apparatuses, a control method thereof, and a program.

  When selecting and reproducing a desired video from a plurality of videos captured by a plurality of imaging devices, it becomes difficult to select the video itself as the number of imaging devices increases as the number of videos increases. For example, even if a list of all images captured by thousands to tens of thousands of imaging devices is displayed on the screen, the relationship between the images and the location where each image was captured cannot be immediately determined, and the It is difficult to make an instant selection.

  Therefore, an icon indicating the location of the plurality of mobile cameras is displayed on a map on the screen of the playback terminal, and by selecting one of these icons, the video captured by the camera corresponding to the icon is displayed. (See Patent Document 1).

JP 2012-156571 A

  However, it is difficult for the above-described display image switching device to intuitively select and reproduce a desired image from a large number of images.

  An object of the present invention is to provide a video reproducing apparatus capable of intuitively selecting and reproducing a desired video from a large number of videos, a control method thereof, and a program.

  In order to achieve the above object, an image reproducing apparatus as one of the inventions according to the present application includes: an acquisition unit that acquires an image obtained by an imaging process of a first imaging device among a plurality of imaging devices; A reproducing unit that displays the reproduced video on the display unit and reproduces the video, and a receiving unit that receives an instruction to change the video displayed on the display unit in response to a user operation performed on the touch panel, Measuring means for measuring a change in the position at which the user has touched the touch panel, and transmitting means for transmitting movement information corresponding to the measured change to an external device, after the transmission processing by the transmitting means, The acquisition unit newly acquires an image selected by the external device according to the movement information and obtained by an imaging process of a second imaging device different from the first imaging device among the plurality of imaging devices. Acquired, the reproduction unit may be reproduced by displaying the newly acquired image on the display unit.

  Advantageous Effects of Invention According to the present invention, a large number of videos can be displayed by switching the imaging device that is capturing the video based on the positional relationship of the imaging devices and the operation on the video playback device that plays back the video captured by the imaging device. Can intuitively select and reproduce a desired video.

1 is a block diagram schematically showing a configuration of a video reproduction system according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating an internal configuration of a management device in FIG. 1. FIG. 2 is a block diagram illustrating an internal configuration of the playback device in FIG. 1. FIG. 2 is a block diagram illustrating an internal configuration of the imaging device in FIG. 1. FIG. 5A is a diagram used to explain the positional relationship between the imaging devices when a large number of the imaging devices in FIG. 4 are arranged in a large-scale stadium, and FIG. It is a bird's-eye view of a stadium, and (B) is a table showing a positional relationship of each imaging device. 3 is a flowchart illustrating a procedure of a video playback process performed by the video playback system of FIG. 1. 7 is a flowchart illustrating a procedure of a modification of the video reproduction processing of FIG. 6. 7 is a flowchart illustrating a procedure of another modified example of the video reproduction processing of FIG. 6. FIG. 5 is a diagram used to explain movement information when switching the imaging device in FIG. 4. FIG. 4 is a diagram used to explain a method of operating the playback device of FIG. 3.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram schematically showing a configuration of a video reproduction system according to an embodiment of the present invention.

  The video reproduction system 100 in FIG. 1 includes a large number of imaging devices 103 and a reproduction device 102 (video reproduction device) that is operated by a user and reproduces a video captured by the imaging devices 103. Many imaging devices 103 and reproduction devices 102 can communicate with each other via the management device 101 (external device).

  FIG. 2 is a block diagram showing the internal configuration of the management device 101 in FIG.

  2, the management apparatus 101 includes a primary storage device 202 and a secondary storage device 203 connected to each other via a CPU 201, and a network device 204. The CPU 201 controls the management device 101 and executes processing according to a program stored in the primary storage device 202. The primary storage device 202 can store temporary data, and stores various control programs to be processed by the CPU 201 and the like. The secondary storage device 203 stores various control programs for controlling the playback device 102, setting information, and the like.

  The network device 204 is connected to an external device (not shown) and performs control commands and data communication with the external device. The connection with the external device may be made directly by a wire such as a USB (Universal Serial Bus) cable or wirelessly by a wireless LAN, or may be made via a network such as a server or the Internet. Further, as a protocol for performing data communication, for example, PTP (Picture Transfer Protocol) or MTP (Media Transfer Protocol) is used.

  FIG. 3 is a block diagram showing the internal configuration of the playback device 102 in FIG.

  3, the playback device 102 includes a primary storage device 302 and a secondary storage device 303, a display unit 304, an operation unit 305, an audio output unit 307, and a network device 306 connected to each other via a CPU 301.

  The primary storage device 302, the secondary storage device 303, and the network device 306 are the same devices as the primary storage device 202, the secondary storage device 203, and the network device 204 in the management device 101 in FIG.

  The CPU 301 performs various operations in accordance with the input signals and programs, and controls each part of the playback device 102. The display unit 304 includes a display device such as an LCD, and displays an image, characters for guiding an operation, and the like. The display unit 304 does not necessarily need to be included in the playback device 102, but in that case, the playback device 102 only needs to have a display control function for controlling display on the display unit of another playback device. The operation unit 305 includes, for example, a keyboard, a mouse, and a touch panel, and receives an operation from a user. The audio output unit 307 includes a speaker or the like that outputs audio.

  FIG. 4 is a block diagram illustrating an internal configuration of the imaging device 103 in FIG.

  4, an imaging device 103 includes a primary storage device 401, a recording medium 402, a CPU 403, an operation unit 404, an imaging element 405, a display unit 406, an optical system 407, a voice input device 408, a communication control device 409, and a secondary storage device. It consists of devices 410, which are connected to each other.

  The primary storage device 401 can store temporary data, and stores various control programs processed by the CPU 403 and the like. The recording medium 402 stores captured image data and the like. Further, the recording medium 402 is removable and can be attached to a personal computer (hereinafter, referred to as “PC”) or the like to read data. That is, the recording medium 402 only needs to be able to access the imaging device 103 and to be able to store and read data on the recording medium 402.

  The CPU 403 performs various calculations and controls components of the imaging device 103 according to input signals and programs. The operation unit 404 includes a button, a lever, and a touch panel for the user to instruct the imaging device 103 to perform an operation. The image sensor 405 converts light formed through the optical system 407 into an image.

  The display unit 406 displays a viewfinder image at the time of image capturing, a captured image, characters for guiding an operation, and the like. The optical system 407 has a lens, a shutter, and an aperture, and forms an image of light from a subject on the image sensor 405 with an appropriate amount and timing. The voice input device 408 inputs voice via a microphone or the like.

  The communication control device 409 is connected to an external device and transmits and receives control commands and data to and from the external device. The connection with the external device may be made directly by a wire such as a USB cable or wirelessly by a wireless LAN, for example, or may be made via a network such as a server or the Internet. Further, as a protocol for performing data communication, for example, PTP or MTP is used. The secondary storage device 410 stores a program (firmware) for controlling the imaging device 103, various setting information, and the like.

  FIG. 5 is a diagram used to explain the relationship between the imaging positions of the respective imaging devices when a large number of the imaging devices of FIG. 4 are arranged in a large-scale stadium, and FIG. It is a bird's-eye view of the arrange | positioned large-scale stadium, and (B) is a table | surface which shows the positional relationship of each imaging device.

  In FIG. 5, the large stadium is a soccer stadium 500. Thousands to tens of thousands of fixed focal length imaging devices 103 are arranged in the soccer stadium 500, and all the imaging devices 103 are arranged so as to face the center of the soccer stadium 500. The positional relationship information 520 displays the positional relationship of each imaging device 103 as a list, and is stored in the secondary storage device 203 included in the management device 101. As described above, the positional relationship between all the imaging devices 103 can be grasped from the positional relationship information 520.

  The positional relationship information 520 indicates, for example, that the cameras 501 to 505 and 510 are arranged as the imaging device 103. Further, it indicates that the camera 502 (camera ID is ID_2) is arranged to the left of the camera 501 (camera ID is ID_1), and the camera 503 (camera ID is ID_3) is arranged in front of the camera 501. It also indicates that the camera 510 (camera ID is ID_100) is located at a point symmetrical position of the camera 501 with respect to the center of the soccer stadium 500. Further, the positional relationship information 520 indicates that no imaging device 103 is arranged behind the camera 501.

  The positional relationship information 520 indicates whether or not each camera can be used as a camera (hereinafter, referred to as an “initial camera”) that has captured an image initially displayed on the display unit 304 of the playback device 102 in FIG. are doing. Specifically, in the positional relationship information 520, a camera that can be used as the initial camera is indicated by “true” in the “initial camera” column, and a camera that cannot be used as the initial camera is indicated by “true” in the “initial camera” column. false ". This indicates that only the camera 501 can be used as the initial camera.

  FIG. 6 is a flowchart illustrating a procedure of a video reproduction process performed by the video reproduction system of FIG.

  In FIG. 6, first, an application (video reproduction application) for reproducing the video of the soccer stadium 500 is downloaded to the reproduction device 102 such as a smartphone or a tablet, and is stored in the primary storage device 302 or the secondary storage device 303. The playback device 102 activates the video playback application in response to the user's instruction (step S601). The playback device 102 requests the management device 101 for a video to be displayed first on the display unit 304 (step S602). The management apparatus 101 determines an initial camera based on the positional relationship information 520 and requests an image from the initial camera (step S603). In the following description, the camera 501 is the initial camera.

  The camera 501 that has requested the video transmits the video data to the management apparatus 101 (step S604). The management apparatus 101 that has received the video transfers the video to the playback apparatus 102 and transmits ID_1, which is the ID of the camera 501, to the playback apparatus 102 (step S605). The playback device 102 plays back the received video (Step S606). In step S605, since the management apparatus 101 transmits not only the video but also the ID of the initial camera to the playback apparatus 102, the management apparatus 101 needs to store and manage the ID of the initial camera of each playback apparatus 102. Can be eliminated.

  Next, the playback device 102 receives a switching instruction for switching the video displayed on the display unit 304 in response to a user operation (step S610). The playback device 102 determines the position of the switching destination imaging device based on the operation of the user (step S611). This determination is based on the imaging device before switching (hereinafter, referred to as a “reference camera”) as a reference. The direction of the switching destination camera and the number of imaging devices ( Hereinafter, this is referred to as “movement information”. The movement information 900 is predetermined in association with the type of operation performed by the user, as shown in FIG. 9, and is stored in the secondary storage device 203 of the management device 101.

  The user operation according to the present embodiment is, for example, a flick operation in which the user touches the screen with a finger and flicks when the playback device 102 is a tablet. In the flick operation, the playback device 102 measures a distance from when the user's finger touches the screen until the finger leaves the screen. If the measured distance is longer than a predetermined value, the degree of operation is determined to be “strong”, and if it is short, it is determined to be “weak”. If the measured distance is shorter than a certain threshold, it is determined that another operation, such as a tap operation, has been performed instead of a flick operation. In FIG. 9, when the user moves his finger to the right and performs a flick operation for a distance longer than a predetermined value, the image is switched to the image of the second imaging device in the left direction of the reference camera. In the present embodiment, since the first reference camera in the video playback processing is the initial camera, the camera 501 is switched to the camera 505 by the above operation. In the above example, the number of imaging devices that move in accordance with the distance of the flick operation is specified. The number of imaging devices that move based on the moving distance or the like may be specified.

  Returning to FIG. 6, the playback device 102 transmits the ID of the reference camera and the movement information determined in step S611 to the management device 101 (step S612). In this embodiment, since the playback device 102 has received the reference camera ID from the management device 101 in step S605, the playback device 102 can immediately transmit the reference camera ID to the management device 101. The playback device may transmit the ID of the reference camera every time the reference camera is changed. Since the playback apparatus 102 transmits not only the movement information of the reference camera but also the ID of the reference camera to the management apparatus, there is no need to know the reference camera of the management apparatus 101, and thus the imaging apparatus to be switched can be quickly selected. it can.

  Next, the management apparatus 101 specifies a switching destination imaging apparatus based on the movement information and the positional relationship information 520 received from the playback apparatus 102 (step S613). For example, a case will be described in which movement information is received in which the ID of the reference camera is ID_1, the movement direction from the reference camera is leftward, and the movement distance (the number of imaging devices) is two. If the number of imaging devices moves one to the left of ID_1 (camera 501), ID_2 (camera 502) exists. If the number of imaging devices moves one to the left of ID_2 (camera 502), ID_5 (camera 505). ) Can be confirmed from the positional relationship information 520. Therefore, the imaging device 103 at the switching destination can be specified as the camera 505.

  The management apparatus 101 requests an image from the cameras 501, 502, and 505 (step S614), and the cameras 501, 502, and 505 transmit the image to the management apparatus 101 (step S615). The management apparatus 101 transmits the video received from the three cameras 501, 502, and 505 and the ID (ID_5) of the camera 505 to be the final switching destination to the playback apparatus 102 (step S616). After that, the management apparatus 101 receives the video from the camera 505 and transmits it to the playback apparatus 102. Also in step S616, as in step S605, the management apparatus 101 stores not only the video but also the ID of the camera after switching to the playback apparatus 102 to the playback apparatus 102. The need to do so can be eliminated. The playback device 102 sequentially plays back the images captured by the cameras 501 and 502 received from the management device 101. Then, even after that, the playback device 102 continuously receives and plays back the video captured by the camera 505 from the management device 101 (step S617). Thereafter, when switching to an image captured by another image capturing apparatus, the processing from step S606 is repeated. On the other hand, when not switching to a video shot by another imaging device or when turning off the power of the playback device, the present process is terminated.

  When the video is reproduced by switching from the camera 501 to the camera 505, the video of the cameras 501 to 505 is reproduced continuously. More specifically, both the video of the camera 501 and the video of the camera 502 are displayed from the state in which the video of the camera 501 is being reproduced. Next, the image of only the camera 502 is displayed. Next, the video of both the camera 502 and the camera 505 is displayed, and finally, the video of only the camera 505 is reproduced. As described above, the playback device 102 sequentially switches and plays back the images of the cameras 501, 502, and 505. Therefore, even when the image of the camera 505 after the switching is slightly different from the image expected by the user, the user confirms the previous image from the image in the middle of the camera switching. (1001 to 1003 in FIG. 10A). At this time, the audio may be switched at the same time as the video is switched.

  Note that, in addition to switching the imaging device by the flick operation described above, when a pinch-out operation (1011 to 1012 in FIG. 10B) is performed, the imaging device is switched to an imaging device located in front of the imaging device before the operation. It may be. When a pinch-in operation (not shown) is performed, the imaging device may be switched to an imaging device located behind the imaging device before the operation. Since the pinch-in / pinch-out operation is similar to the zoom-in / zoom-out operation of the camera, it is an effective operation method when switching to the previous or next camera.

  In addition, a flick operation from the lower part to the upper part of the screen (1021 to 1022 in FIG. 10C) switches to an imaging device located in front of the imaging device that was capturing the video displayed immediately before the start of the operation. It may be. In addition, a flick operation (not shown) from the upper portion to the lower portion of the screen may be switched to an imaging device located behind the imaging device that was capturing the video displayed immediately before the start of the operation.

  Furthermore, when the playback device 102 is rotated by 180 degrees (1031 to 1032 in FIG. 10D), it is possible to switch to the imaging device at a point symmetric position with the center of the soccer stadium 500 as the center of symmetry.

  According to the processing in FIG. 6, the switching destination imaging device is specified based on the movement information and the positional relationship information 520 received from the playback device 102 (step S613). Therefore, the video can be switched based on the operation content of the reproduction device by the user without selecting the imaging device, and the desired video can be intuitively selected and reproduced from a large number of videos. In particular, the processing of FIG. 6 can reduce the burden on the user to select a desired image as the number of imaging devices increases. In addition, since the positional relationship information 520 is stored in the management device 101 in advance, the present video reproduction process can be performed even if the user does not know the installation location and the number of installed imaging devices.

  FIG. 7 is a flowchart showing a procedure of a modified example of the video reproduction processing of FIG.

  7, the same processing as in steps S610 to S613 in FIG. 6 is performed. In step S613, for example, the movement information from the playback device 102 is set such that the ID of the reference camera is ID_3, the movement direction from the reference camera is forward, and the number of imaging devices that pass through to reach the switching destination camera is one. Assume that you have received it. However, since there is no imaging device in front of the camera ID_3 based on the positional relationship information 520, the management device 101 determines that the switching destination imaging device 103 does not exist, and determines that the playback device 102 does not have the switching destination imaging device. Notify (step S705). The playback device 102 displays on the display unit 304 of the playback device 102 that there is no imaging device 103 to switch to (step S706), and ends this processing.

  Here, as a method of displaying the absence of the imaging device 103 on the display unit 304 of the playback device 102, there is a method of displaying a video before operation after a black screen is displayed once (see FIG. 10E). 1041 to 1043). For example, if a flick operation is performed to the right while a video is being displayed on the playback device 102, the video is switched to another imaging device 103. However, since a black screen is displayed once, the user can display the corresponding other imaging device 103. It can be grasped that it does not exist. In addition, a method of displaying "no camera" may be used. Thereby, the user can grasp that the imaging device 103 corresponding to the direction in which the video is to be switched does not exist.

  Further, when there is no imaging device in the direction in which the switching was performed, the switching may be performed to any one of the imaging devices 103 described in the positional relationship information 520. For example, although there is no imaging device in front of the camera 503, when a user attempts to switch an image in front of the camera 503, it can be set to actually switch to the camera 501 located behind the camera 503.

  According to the processing of FIG. 7, the playback device 102 displays on the display unit 304 of the playback device 102 that the switching destination imaging device 103 does not exist (step S706). The user can be visually notified that there is no camera present. Accordingly, the user can recognize that the imaging device 103 does not exist in the direction in which the video is to be switched, and can quickly move to an operation of selecting a video from the imaging device 103 in a different direction. .

  FIG. 8 is a flowchart showing the procedure of another modified example of the video reproduction processing of FIG.

  8, the same processing as in steps S610 to S613 in FIG. 6 is performed, and the management apparatus 101 determines whether or not the audio data of the video imaged by the imaging apparatus 103 specified in step S613 can be used independently. A determination is made (step S805). If the imaging device 103 can use audio data independently (YES in step S805), the imaging device 103 requests the imaging device 103 for audio data (step S807).

  Here, whether or not the imaging device 103 can independently use audio data is determined based on whether the description of “audio data” in the positional relationship information 520 corresponds to “true” or “false”. In the case of “true”, the image capturing apparatus 103 can use audio data, for example, the camera 503. In the case of “false”, the image capturing apparatus 103 cannot use audio data, for example, the camera 501. I do.

  When the image capturing apparatus 103 cannot independently use audio data, such as the camera 501 (NO in step S805), change to one of the image capturing apparatuses 103 installed around the image capturing apparatus 103 ( Step S806). Then, it is determined again whether or not the changed imaging device 103 can use the audio data independently (step S805). In the following description, it is assumed that the imaging device 103 specified in step S613 is the camera 501, and the imaging device 103 that can independently use audio data is the camera 503.

  The management apparatus 101 requests the audio data of the camera 503 determined to be able to use the audio data independently in step S805 (step S807). Then, the camera 503 transmits audio data to the management apparatus 101 (step S808), and the management apparatus 101 requests an image from the camera 501 specified in step S613 (step S809).

  The camera 501 transmits only the video data to the management device 101 (step S810). The management apparatus 101 transmits the video captured by the camera 501 and the audio acquired by the camera 503 to the playback apparatus 102 together with the ID of the camera 501 as the camera after switching (step S811). The playback device 102 plays back the video captured by the camera 501 and the audio acquired by the camera 503 (step S812), and ends this processing. Note that the audio data may be audio data obtained from a specific microphone or a specific camera.

  According to the processing in FIG. 8, the playback device 102 plays back the video captured by the camera 501 and the audio acquired by the camera 503 (step S812). Therefore, the video captured by the camera 501 can be played back together with the audio of the camera 503 installed around the camera 501, and thus the video can be played back together with the audio that is not uncomfortable.

  As a modified example of the processing in FIG. 8, audio reproduced together with video captured by the imaging device 103 in which audio data cannot be used independently such as the camera 501 is acquired by the camera 503 at a position designated by the user. Sound may be used.

  According to the processing of the present modified example, it is possible to acquire sound at a location different from the camera that is acquiring the desired video, so that the user can view the desired video while watching the desired video, for example, at the center of the stadium. It is possible to listen to a sound obtained from a specific microphone, such as near sound or live music.

  In the above embodiment, the number of the playback devices 102 has been described as one, but the number of the playback devices 102 may be two or more. In this case, two or more playback devices 102 may be operated by a plurality of users, and each operation may be a different operation.

  In the above embodiment, a touch panel operation is performed on the playback device 102 such as a smartphone or a tablet, but an operation using a keyboard, a mouse, or the like may be performed instead of the touch panel operation. Also, in the above embodiment, the imaging device 103 is arranged toward the center of the soccer stadium 500, but may be arranged in any direction of 360 degrees, and is arranged on the entire wall and May be arranged in a vertical direction.

  Further, all playback devices are connected to the imaging device 103 over a network, and if the positional relationship information of the imaging device 103 is stored in the playback device 102, the playback device and the management device may be the same device. It can be realized even with a configuration without the above.

  Note that the video reproduced by the reproducing device includes not only a moving image but also a still image. A method of reproducing a moving image may be a known reproduction method such as streaming reproduction. In the case of streaming reproduction, the reproduction device 102 periodically transmits streaming data related to the video imaged by the imaging device 103 via the management device 101. Receive and play.

  According to the present invention, software (program) for realizing the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. In the processing to be executed, the program is constituted by a computer-readable storage medium storing the program.

Reference Signs List 100 video reproduction system 101 management device 102 reproduction device 103 imaging device 520 positional relationship information 203 secondary storage device

Claims (11)

An acquisition unit configured to acquire a video obtained by an imaging process of a first imaging device among the plurality of imaging devices;
Playback means for displaying the obtained video on a display unit and playing it back,
Receiving means for receiving an instruction to change an image displayed on the display unit in response to a user operation performed on the touch panel,
Measuring means for measuring a change in a position at which the user touches the touch panel,
Transmitting means for transmitting movement information corresponding to the measured change to an external device,
After the transmission process by the transmission unit, the acquisition unit captures an image of a second imaging device different from the first imaging device among the plurality of imaging devices selected by the external device according to the movement information. Newly obtain the video obtained by the processing,
The video reproducing apparatus, wherein the reproducing means displays the newly obtained video on the display unit and reproduces the video.   2. The video reproducing apparatus according to claim 1, wherein the measuring unit measures a distance from a position where the user touches the touch panel to a position away from the touch panel as a change. 2. The video reproducing apparatus according to claim 1, wherein the measuring unit has a plurality of positions touched by the user, and measures a change in an interval between the plurality of positions. The user operation is a pinch-in / pinch-out operation,
The apparatus according to claim 3, wherein the measuring unit measures reduction / enlargement of an interval between the plurality of positions as the change. The external device holds positional relationship information indicating an arrangement of the plurality of imaging devices,
The second imaging device is selected according to the position and the movement information of the first imaging device at which the video reproduced by the reproduction means indicated by the positional relationship information is obtained. Item 5. The video reproducing device according to any one of Items 1 to 4 . 6. The video playback device according to claim 5 , wherein the measured change corresponds to the number of devices from the first imaging device to the second imaging device. After the transmission process by the transmission unit, the acquisition unit acquires images of a plurality of imaging devices existing between the first device and the second imaging device among the plurality of imaging devices,
It said reproducing means, the video reproducing apparatus according to any one of claims 1 to 6, characterized in that continuously reproducing the newly acquired image from the plurality of imaging devices. The video according to any one of claims 1 to 7 , wherein the second imaging device is selected by the external device based on a direction and the number set in advance in association with the movement information. Playback device. The mobile information further video reproducing apparatus according to any one of claims 1 to 8, characterized in that corresponding to the type of operation of the user. Acquiring a video obtained by an imaging process of a first imaging device among the plurality of imaging devices;
Displaying the obtained video on a display unit and playing back the video,
Receiving an instruction to change an image displayed on the display unit in response to a user operation performed on the touch panel;
Measuring a change in the position of the user touching the touch panel;
Transmitting movement information corresponding to the measured change to an external device,
After the transmission processing, a video obtained by an imaging process of a second imaging device different from the first imaging device among the plurality of imaging devices selected by the external device according to the movement information is newly added. Steps to get to
Displaying the newly acquired video on the display unit and reproducing the video on the display unit. Program for causing to function as each unit of the video reproducing apparatus according to the computer in any one of claims 1 to 9.

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