JP2017033179A - Information processing apparatus, control method thereof, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce a content on a video display device, while allowing a user to list-display a plurality of contents, to identify the content in process of reproduction, or to issue an instruction to stop reproducing the content, on a device in hand, thereby improving usability.SOLUTION: In list-displaying a plurality of reduced contents corresponding to a main content, on a display device, a reduced content corresponding to the main content being reproduced on an external video reproducing apparatus is displayed on the display device in second display mode which is different from first display mode for the other reduced contents. In response to user operation on the reduced content displayed in the second display mode, an information processing apparatus receives an instruction to execute predetermined processing on the main content associated with the reduced content. The information processing apparatus transmits an identifier of the reduced content, and an instruction to execute predetermined processing on the main content associated with the identifier, to the external device.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an information processing apparatus for identifying content reproduced and displayed on an external apparatus, a control method thereof, and a program.

  Conventionally, there is a remote control device that communicates with a video display device, selects a desired content from a plurality of contents recorded on the recording medium, and instructs reproduction (see Patent Document 1).

JP 2003-032509 A

  On the other hand, it is possible to display a list of a plurality of contents at the user's hand, identify the contents being reproduced on the video display device, and instruct to stop the reproduction of the contents. There is a demand to improve.

  In order to solve the above-described problem, one of the inventions according to the present application is an information processing apparatus that displays a list of reduced contents associated with an identifier capable of identifying main body contents on a display device, and is provided on an external video reproduction device. Acquiring means for acquiring an identifier of the main content being played back, and a reduced content associated with the acquired identifier among the plurality of reduced contents displayed in a list as a first display mode of other reduced contents Display control means for controlling display on the display device in a different second display mode, and a main body associated with the reduced content in response to a user operation on the reduced content displayed in the second display mode A receiving means for receiving an instruction to execute predetermined processing on the content, an identifier of the reduced content, and an identifier associated with the identifier. Characterized in that an instruction to execute the predetermined processing to the main content is provided with transmitting means for transmitting to the outside.

  According to the present invention, when displaying a list of contents to be played back on the video display device, it is possible to display the content being played back on the video display device in an identifiable manner or to accept an instruction to stop playback of the content. As a result, the usability can be improved.

It is a block diagram which shows an example of a structure of the data management system in one Embodiment of this invention. It is a block diagram which shows an example of a structure of the remote control apparatus in one Embodiment of this invention. It is a block diagram which shows an example of a structure of the content management apparatus in one Embodiment of this invention. It is a block diagram which shows an example of a structure of the server apparatus in one Embodiment of this invention. It is a figure which shows an example of the content list screen in one Embodiment of this invention. It is a sequence diagram which shows an example of operation | movement of the system in one Embodiment of this invention. It is a figure which shows an example of the content list screen in one Embodiment of this invention. It is a flowchart figure which shows an example of operation | movement of the remote control apparatus in one Embodiment of this invention. It is a flowchart figure which shows an example of operation | movement of the remote control apparatus in one Embodiment of this invention. It is a sequence diagram which shows an example of operation | movement of the system in one Embodiment of this invention. It is a sequence diagram which shows an example of operation | movement of the system in one Embodiment of this invention.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the constituent elements described in this embodiment are merely examples, and are not intended to limit the scope of the present invention only to them.

(First embodiment)
In the present embodiment, the data management apparatus according to the present invention is shown as an embodiment that is realized as a data management system including a plurality of devices.

  The system configuration of the present embodiment will be described with reference to the system diagram of FIG. This system includes a remote control device 102, a content management device 103, an imaging device (digital camera) 101, a large screen monitor 107, a router 105 with an access point function, the Internet 106, and a server device 104. Content consisting of still images / moving images taken by the user with the digital camera 101 is sent to the content management apparatus 103 via wireless communication. The content management apparatus 103 that has received the content allocates a content identifier to the content and stores the original content. Then, a reduced content of the captured content is generated. If the content is a still image, the reduced content is generated by reducing the vertical and horizontal sizes. In addition, if the content is a moving image, a part of the frame is extracted, such as a whole reduced content obtained by reducing the vertical and horizontal sizes of all the frames of the moving image, and a frame of a predetermined time from the beginning of the moving image, and the vertical and horizontal sizes of these are extracted. Two types of reduced partial reduced content are generated. The reduced content is transmitted from the router with access point function 105 to the server device 104 together with the content identifier via the Internet 106. Thus, the original content is managed by the content management apparatus 103 and the reduced content is managed by the server apparatus 104 under a common content identifier. The server device 104 generates attribute information for each received reduced content. The attribute information is auxiliary information for content including an evaluation value and information indicating whether or not to delete. In this system, the content management device 103 stores original content, the server device 104 stores reduced content corresponding to the original content, and the reduced content is associated with attribute information and managed in the user's content library. . The original content and the corresponding reduced content are associated with the same content identifier and stored in the content management device 103 and the server device 104, respectively. If the user owns a plurality of digital cameras 101, the content library is made up of contents that are shot and generated by the plurality of digital cameras 101.

  When the user uses the content library, the operation is performed from the remote control device 102. The remote control device 102 communicates with the server device 104 via the Internet 106 from the router 105 with an access point function. An environment for accessing a content library can be provided by acquiring reduced content and attribute information in the server device 104 and displaying them on a monitor on the remote control device 102. In the present system in which the remote control device 102 uses the reduced content stored in the server device 104, there is an advantage that processing can be easily performed even if the processing capability of the remote control device 102 is weak.

  The monitor 208 of the remote control device 102 has a touch panel function. In accordance with the operation performed on the monitor by the user, the determined control command is transmitted from the router with access point function 105 to the server device 104 via the Internet 106. The server device 104 not only executes processing according to the received control command, but also plays a role of relaying the control command to the content management device 103 as necessary. The remote control device 102, the content management device 103, and the server device 104 cooperate to provide the user with an environment where the content library can be used.

  As a typical use of the content library, there is a use of displaying desired content on a large screen monitor 107 connected to the content management apparatus 103 for viewing. The user selects content to be displayed on the large screen monitor 107 while viewing the reduced content on the remote control device 102, and executes a display instruction. The remote control apparatus 102 that has received the display instruction transmits a display instruction command having the content identifier of the display target content as an argument to the server apparatus 104, and the command is transferred from the server apparatus 104 to the content management apparatus 103. Upon receiving the display instruction command, the content management apparatus 103 identifies the original content having the content identifier from the accumulated content and displays it on the large screen monitor 107. In other words, while the user issues a display instruction from the remote control device 102 with light operability using reduced content, the user uses the original content of the content management device 103 on the large-screen monitor 107 to achieve high quality. Appreciate with video.

  Hereinafter, a case where the remote control device 102 and the content management device 103 transmit and receive various data and commands via the server device 104 will be described. However, the present invention is not limited to this, and the remote control apparatus 102 and the content management apparatus 103 may directly transmit and receive these pieces of information.

  The configuration of the computer device constituting the remote control device 102 of this embodiment will be described with reference to the block diagram of FIG. The remote control device 102 may be realized by a single computer device, or may be realized by distributing each function to a plurality of computer devices as required. When configured by a plurality of computer devices, they are connected by a local area network (LAN) or the like so that they can communicate with each other. Specifically, the remote control device 102 is realized by an information processing device such as a tablet terminal, for example.

  In FIG. 2, a control unit 201 controls the entire remote control device 102, and is, for example, a central processing unit (CPU). A Read Only Memory (ROM) 202 is a rewritable nonvolatile memory, and holds a program such as an Operating System (OS) and a program supplied from an external device. A Random Access Memory (RAM) 203 is a volatile memory and temporarily stores programs and data. The external storage device 204 is a hard disk drive (HDD) fixedly installed on the remote control device 102. Alternatively, the external storage device 204 may be a solid state drive (SSD) composed of flash memory, a hybrid drive using a combination of a hard disk and flash memory, a memory card, or the like. The external storage device 204 stores reduced content acquired from the server device 104. The external storage device 204 stores an OS and software programs such as a content management application program described later.

  The Bit Move Unit (BMU) 205 controls, for example, data transfer between memories (for example, between the VRAM 206 and another memory) or between the memory and each I / O device (for example, the network interface 209). A video RAM (VRAM) 206 draws an image to be displayed on a display device (monitor) 208. The image generated in the VRAM 206 is transmitted to the monitor 208 according to a predetermined rule, whereby the monitor 208 displays the image. A monitor 208 is a touch panel having a touch sensor 207. Note that the touch panel is an input device that is configured to overlap with the monitor 208 and is configured to output coordinate information corresponding to the touched position. The control unit 201 can detect the following operations on the touch panel. Touching the touch panel with a finger or a pen (hereinafter referred to as touchdown). The touch panel is touched with a finger or a pen (hereinafter referred to as touch-on). The touch panel is moved while being touched with a finger or a pen (hereinafter referred to as a move). The finger or pen that was touching the touch panel is released (hereinafter referred to as touch-up). A state where nothing is touched on the touch panel (hereinafter referred to as touch-off). These operations and the position coordinates where the finger or pen touches the touch panel are notified to the control unit 201, and the control unit 201 determines what operation has been performed on the touch panel based on the notified information. To do. Regarding the move, the moving direction of the finger or pen moving on the touch panel can also be determined for each vertical component / horizontal component on the touch panel based on the change of the position coordinates. In addition, when touch-up is performed on the touch panel through a move of a predetermined distance or more from touchdown, it is assumed that the drop is performed via drag (drag and drop). The touch panel may be any of various types of touch panels such as a resistive film method, a capacitance method, a surface acoustic wave method, an infrared method, an electromagnetic induction method, an image recognition method, and an optical sensor method. .

  The wireless network interface 209 communicates with the router 105 with an access point function by connecting to the wireless communication line 211. The system bus 210 connects the units 201 to 209 so that they can communicate with each other.

  The configuration of the computer apparatus that constitutes the content management apparatus 103 of this embodiment will be described with reference to the block diagram of FIG. Each of the content management apparatuses 103 may be realized by a single computer apparatus, or may be realized by distributing functions to a plurality of computer apparatuses as necessary. When configured by a plurality of computer devices, they are connected by a local area network (LAN) or the like so that they can communicate with each other. Specifically, the content management apparatus 103 is realized by, for example, a large-capacity storage device such as an external hard disk or a recorder.

  In FIG. 3, the control unit 301 controls the entire content management apparatus 103 and is, for example, a central processing unit (CPU). A read only memory (ROM) 302 is a rewritable nonvolatile memory, and holds programs such as an operating system (OS) and programs supplied from an external device. A Random Access Memory (RAM) 303 is a volatile memory and temporarily stores programs and data. The external storage device 304 is a hard disk drive (HDD) fixedly installed in the content management device 103. Alternatively, the external storage device 304 is a solid state drive (SSD) configured by flash memory, a hybrid drive using both a hard disk and flash memory, a memory card, or the like. The external storage device 304 stores original content acquired from the digital camera 101.

  A Bit Move Unit (BMU) 305 controls, for example, data transfer between memories (for example, between the VRAM 306 and another memory) and between the memory and each I / O device (for example, the network interface 307). A Video RAM (VRAM) 306 renders an image to be displayed on the large screen monitor 107. The image generated in the VRAM 206 is transmitted to the large screen monitor 107 in accordance with a predetermined rule, whereby the image is displayed on the large screen monitor 107.

  The wireless network interface 307 communicates with the router 105 with an access point function by connecting to the wireless network line 310, and communicates with the digital camera 101 by connecting to the wireless network line 310. A system bus 309 connects the units 301 to 307 so that they can communicate with each other.

  The configuration of the computer device constituting the server device 104 of this embodiment will be described with reference to the block diagram of FIG. Each of the server devices 104 may be realized by a single computer device, or may be realized by distributing functions to a plurality of computer devices as necessary. When configured by a plurality of computer devices, they are connected by a local area network (LAN) or the like so that they can communicate with each other. Specifically, the server device 104 is realized by an information processing device such as a cloud server.

  In FIG. 4, a control unit 401 controls the entire server device 104, and is, for example, a central processing unit (CPU). A read only memory (ROM) 402 is a rewritable nonvolatile memory, and holds programs such as an operating system (OS) and programs supplied from an external device. A Random Access Memory (RAM) 403 is a volatile memory and temporarily stores programs and data. The storage unit 404 is a hard disk drive (HDD) fixedly installed in the server device 104, a solid state drive (SSD) composed of flash memory, a hybrid drive using both a hard disk and flash memory, a memory card, and the like. The storage unit 404 stores attribute information including reduced content sent from the content management device 103, evaluation values for content generated by the server device 104, information indicating whether or not to be deleted, and the like.

  A Bit Move Unit (BMU) 405 controls, for example, data transfer between memories (for example, between the database unit 406 and another memory) or between the memory and each I / O device (for example, a wired network interface 407). . The database unit 406 has a management function for improving searchability for reduced content and content attribute information recorded in the storage unit 404. It tells in which area of the storage unit 404 content according to a predetermined condition is recorded.

  The wired network interface 407 is connected to the Internet 106 by connecting to the network line 409. A system bus 408 connects the units 401 to 408 so that they can communicate with each other.

  FIG. 5A is an example of a thumbnail list screen that is displayed when the control unit 201 of the remote control apparatus 102 starts a content management application program (hereinafter referred to as a content management application) in response to a user operation. The control unit 201 obtains thumbnail images as reduced contents from the server device 104 via the wireless network interface 209 and displays them as a list on the monitor 208 by developing them in the VRAM 206. A thumbnail list screen 500 is a GUI for operating control on a content library managed by the server device 104 or the content management device 103. In the thumbnail display area 501, thumbnail images acquired from the server device 104 are displayed side by side in order of shooting date and time. FIG. 5B is a diagram for explaining an operation of displaying and reproducing the original content held by the content management apparatus 103 on the monitor 107 using the thumbnail list screen 500. The user instruction member 504 moves to a predetermined position by moving upward in a direction intersecting the time axis of the thumbnail list screen 500 while touching on a thumbnail image to be reproduced. When the control unit 201 detects such an operation, the thumbnail image identifier and the image playback command are transmitted to the content management apparatus 103 via the server apparatus 104. If a move operation in the upward direction is detected in FIG. 5B, when a thumbnail image other than the playback target thumbnail image is grayed out or the playback target thumbnail image reaches a predetermined position, the screen moves out of the screen. You may make it give the animation effect which goes. Thereby, the user can recognize that the operation is detected. When the transmission of the image playback command is completed, the control unit 201 returns the thumbnail list screen to the display mode as shown in FIG.

  In the system of the present embodiment, an operation for executing a moving image reproduction process as original content will be described with reference to a sequence diagram of FIG. The following operation is realized by the control unit 201 of the remote control device 102 executing an OS or a predetermined application program and controlling each unit of the remote control device 102 according to the execution. Further, the control unit 401 of the server device 104 is realized by executing an OS or a predetermined application program and controlling each unit of the server device 104 according to the execution. Further, this is realized by the control unit 301 of the content management apparatus 103 executing an OS or a predetermined application program and controlling each unit of the content management apparatus 103 according to the execution. Further, communication between the remote control device 102 and the server device 104 and between the server device 104 and the content management device 103 is performed in accordance with a communication standard according to HTTP.

  As described above, the remote control device 102 detects a move operation on the thumbnail image on the thumbnail list screen 500 (S601). In response to this, the remote control apparatus 102 transmits a content identifier of the thumbnail image and a reproduction start instruction command for instructing the reproduction start of the moving image corresponding to the thumbnail image to the server apparatus 104 (S602). When the server device 104 receives the content identifier and the reproduction start instruction command, the server device 104 transmits them to the content management device 103 that holds the moving image corresponding to the content identifier (S603). When the content management apparatus 103 receives the content identifier and the reproduction start instruction command, the content management apparatus 103 reads the moving image associated with the content identifier from the external storage device 304. Then, the read moving image is decoded, developed in the VRAM 306, and transmitted to the monitor 107, thereby controlling the moving image to be displayed and reproduced on the large screen monitor 107 (S604). The content management apparatus 103 monitors the playback state of the moving image on the large screen monitor 107 and periodically notifies the server device 104 of the content identifier and the playback state (S605). Upon receiving the content identifier and the playback state, the server device 104 determines whether or not the playback state has changed, and if there is a change, notifies the remote control device 102 of the content identifier and the playback state (S606). The remote control apparatus 102 performs display control so that an icon corresponding to the reproduction state is displayed in the vicinity of the thumbnail image corresponding to the received content identifier (S607). As shown in FIG. 7A, a playback stop button 710 is displayed as an icon superimposed on the thumbnail image 701. Note that the processing in steps S604 to S606 is repeated for each frame in order until the last frame of the moving image is played back or until a playback stop instruction is given, which will be described later. When the last frame of the moving image is reproduced, the next moving image may be automatically selected and reproduced. In this case, the processes in steps S604 to S606 are repeated for the next moving image.

  In response to the user operation, the remote control device 102 detects a touch-on to the playback stop button 710 (S608). In response to this, the content identifier of the thumbnail image 701 on which the playback stop button 710 is superimposed and a playback stop instruction command for instructing to stop playback of the moving image corresponding to the thumbnail image are transmitted to the server device 104. (S609). Upon receiving the content identifier and the reproduction stop instruction command, the server device 104 transmits the reproduction stop instruction command to the content management apparatus 103 that holds the moving image associated with the content identifier (S610). When the large screen monitor 107 reproduces only one moving image, the content identifier need not be transmitted to the content management apparatus 103 in step S610.

  When the playback stop instruction command is received, the content management apparatus 103 stops decoding of the moving image being played back, initializes the VRAM, and enters a display mode before the large screen monitor 107 starts playing the moving image. To control. When the content management apparatus 103 notifies the server apparatus 104 that the reproduction of the moving image has been stopped as a result of monitoring the reproduction state of the moving image on the large-screen monitor 107 (S612), the server apparatus 104 remotely notifies the notification. The data is transferred to the control device 102 (S613). When the remote control device receives the notification that the playback of the moving image is stopped, the remote control device hides the playback stop button 710.

  FIG. 8 shows an operation when a movement operation in the time axis direction of the thumbnail display area 501 is detected in response to a user operation when the playback stop button 710 is displayed on the thumbnail list screen 500 in the remote control device 102. This will be described with reference to the flowchart of FIG. The following operation is realized by the control unit 201 of the remote control device 102 executing an OS or a predetermined application program and controlling each unit of the remote control device 102 according to the execution.

  When the control unit 201 detects a move operation in the time axis direction of the thumbnail display area 501 in response to a user operation (S801), the control unit 201 changes the time range to be displayed in the thumbnail display area 501 (S802). Then, the control unit 201 determines whether or not the thumbnail image corresponding to the moving image being reproduced on the large monitor is included in the changed time range (S803). If included (Yes in S803), the thumbnail image associated with the shooting time included in the changed time range is read from the external storage device 204. Then, the newly read thumbnail image is displayed in the thumbnail display area 501, and a reproduction stop button is superimposed on the thumbnail image corresponding to the moving image being reproduced (S804).

  On the other hand, if it is not included (No in S803), the thumbnail image associated with the shooting time included in the changed time range is read from the external storage device 204. Then, as shown in FIG. 7B, the newly read thumbnail image is displayed in the thumbnail display area 501 and the playback stop button 720 is displayed at a predetermined position (S805).

  In order to smoothly update the display on the thumbnail list screen 700, the control unit 201 displays a thumbnail list drawing surface including thumbnail images corresponding to shooting times included in a time range wider than the changed time range. Drawing is performed in the RAM 203. Then, the drawing surface is shifted in accordance with the moving amount of the move operation, and the BMU 205 transfers it to the VRAM 206.

  In the above description, as an example of displaying the playback stop button in the vicinity of the thumbnail image, it has been described as being superimposed, but it may be displayed adjacent to the thumbnail image.

  Further, the thumbnail image corresponding to the moving image being played back may be distinguished from other thumbnail images, and the thumbnail image may be displayed surrounded by a frame of a predetermined color or a frame of a predetermined width. In this case, if touch-on is detected in the thumbnail image itself, a playback stop command is transmitted in the same manner as the playback stop instruction button.

  Further, in the remote control device 102, when the playback stop button 710 is displayed on the thumbnail list screen 500, the operation when the move operation in the time axis direction of the thumbnail display area 501 is detected in response to the user operation is as follows. Another form may be sufficient. This will be described with reference to the flowchart of FIG. The following operation is realized by the control unit 201 of the remote control device 102 executing an OS or a predetermined application program and controlling each unit of the remote control device 102 according to the execution. After the above-described steps S801 to S803 are executed, when the shooting time of the thumbnail image corresponding to the moving image being reproduced is not included in the changed time range (No in S803), the process is illustrated in FIG. In this way, the display range change button 730 is displayed at a predetermined position (S901). Until the display range change button 730 is pressed, the thumbnail image associated with the shooting time included in the changed time range is read from the external storage device 204 and displayed in the thumbnail display area 501.

  When the control unit 201 detects a pressing operation of the display range change button 730 in response to a user operation (S902), the control unit 201 changes the time range of the thumbnail display area 501 to include the shooting time of the moving image being played back (S902). S903). Then, similarly to step S804, the thumbnail image associated with the shooting time included in the changed time range is read from the external storage device 204. Then, the newly read thumbnail image is displayed in the thumbnail display area 501, and a playback stop button is superimposed on the thumbnail image corresponding to the moving image being played back.

(Second Embodiment)
In the present embodiment, a case will be described in which a moving image is reproduced on the large screen monitor 107 and a thumbnail image is also reproduced on the thumbnail list screen of the remote control device 102 correspondingly.

  With reference to the sequence diagram of FIG. 10, an operation of executing a reproduction process of a moving image (main body moving image) as original content (main body content) in the system of the present embodiment will be described. The following operation is realized by the control unit 201 of the remote control device 102 executing an OS or a predetermined application program and controlling each unit of the remote control device 102 according to the execution. Further, this is realized by the control unit 301 of the content management apparatus 103 executing an OS or a predetermined application program and controlling each unit of the content management apparatus 103 according to the execution. Further, the remote control device 102 and the content management device 103 transmit and receive various control commands via the router 105 with an access point function.

  As described above, the remote control device 102 detects an upward movement operation in a direction crossing the time axis on the thumbnail image corresponding to the moving image on the thumbnail list screen 500 (S1001). Here, the thumbnail image corresponding to the moving image is a reduced moving image obtained by extracting a part of all the frames included in the moving image and performing reduction processing. On the thumbnail list screen 500, the reduced image is repeatedly reproduced and displayed. Thereby, it is possible to reduce the load of the storage capacity of the RAM 203 or the external storage device 204 that is consumed for temporarily storing thumbnail images for display.

  In response to the detection of the move operation, the remote control device 102 transmits a content identifier of the thumbnail image and a reproduction start instruction command for instructing the reproduction start of the moving image corresponding to the thumbnail image to the content management device 103. (S1002). The content management apparatus 103 receives the content identifier and the reproduction start instruction command. In response to this, the moving image associated with the content identifier is read from the external storage device 304, decoded, expanded in the VRAM 306, and transmitted to the monitor 107, so that the moving image is displayed on the large screen monitor 107. (S1003). Then, the content management apparatus 103 notifies the remote control apparatus 102 of the start of moving image reproduction together with the content identifier (S1004). In response to this, the remote control apparatus 102 performs display control so as to display the thumbnail image corresponding to the received content identifier in a predetermined display mode (S1005).

  The content management apparatus 103 branches the moving image read from the external storage device 304 into two paths for each frame image. In one path, the content management apparatus 103 executes a decoding process on the frame image and develops it in the VRAM 306 for monitoring. It transmits to 107 (S1006). In the other path, the frame image is reduced and transmitted to the remote control apparatus 102 via the wireless network interface 307 (S1007). When receiving the frame image, the remote control device 102 decodes and develops the frame image in the VRAM 206, and updates the display of the corresponding thumbnail image on the thumbnail list screen 500 (S1008). In this way, the same scene that is reproduced and displayed on the large screen monitor 107 is also displayed on the monitor 208 of the remote control device.

  Note that the processing in steps S1006 to S1008 is repeated for each frame in order until the last frame of the moving image is played back or until a playback stop instruction is given, which will be described later. When the last frame of the moving image is reproduced, the next moving image may be automatically selected and reproduced. In this case, after the processes of steps S1004 and S1005 are executed for the next moving image, the processes of steps S1006 to S1008 are repeated.

  In response to the user operation, the remote control device 102 transmits a playback stop instruction command to the content management device 103 (S1009). The content management apparatus 103 stops the processing of steps S1007 to S1008 described above (S1010), and notifies the remote control apparatus 102 to that effect (S1011). The remote control device 102 hides the icon displayed in step S1005 (S1012).

  Note that the remote control device 102 stores not only partially reduced moving images including reduced frames corresponding to some frames of the main moving image but also full-length reduced moving images including reduced frames corresponding to all frames of the main moving image. Also good. The operation of this system in such a case will be described with reference to the sequence diagram of FIG. First, the processes of steps S1001 to S1005 are executed. Here, a partially reduced video is reproduced and displayed as a thumbnail image. In response to the notification in step S1004, the remote control apparatus 102 switches the thumbnail image corresponding to the content identifier from the partially reduced moving image to the full-length reduced moving image (S1101). The content management apparatus 103 notifies the remote control apparatus 102 of the reproduction position corresponding to the frame being reproduced on the large screen monitor 107 (S1102). The remote control device 102 reproduces and displays a position corresponding to the notified reproduction position in the full-length reduced video (S1103).

  In addition, as described above, even when a moving image is reproduced on the large screen monitor 107 and a thumbnail image is also reproduced correspondingly in the remote control device 102, the thumbnail display area 501 is displayed in response to a user operation. A move operation in the time axis direction can be detected. When a move operation in the time axis direction is detected, the time range displayed on the thumbnail list screen is changed, so that the thumbnail image corresponding to the moving image being reproduced on the large screen monitor 107 may not be displayed. Even in such a case, the remote control device 102 continues to receive the reduced frame image, but the decoding and display processing stops. Thereby, the processing load on the control unit 201 and the BMU 205 can be reduced. When the time range is further changed and the thumbnail image becomes a display target again, decoding and display processing are resumed. As a result, a reduced frame corresponding to the frame being reproduced on the large screen monitor 107 is displayed on the monitor 208 of the remote control device 102 regardless of the period during which the display is stopped.

  As described above, the frame image at the same position as the main body moving image being reproduced on the video reproduction device (large screen monitor 107) is displayed on the monitor 208 of the remote control device 102. Accordingly, the user can easily recognize a thumbnail image corresponding to the main body image being reproduced on the large screen monitor 107 from the plurality of thumbnail images displayed on the thumbnail list screen.

(Other embodiments)
The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

Claims (8)

An information processing apparatus that displays a list of reduced contents associated with an identifier capable of identifying main body contents on a display device,
An acquisition means for acquiring an identifier of main body content being played on an external video playback device;
Of the plurality of reduced contents displayed in a list, the reduced content associated with the acquired identifier is displayed on the display device in a second display mode different from the first display mode of other reduced content. Display control means for controlling;
A receiving unit that receives an instruction to execute a predetermined process on the main body content related to the reduced content in response to a user operation on the reduced content displayed in the second display mode;
An information processing apparatus comprising: a transmission unit configured to transmit an identifier for the reduced content and an instruction to execute predetermined processing on the main body content associated with the identifier to an external device.   The information processing apparatus according to claim 1, wherein the predetermined process is a process of stopping reproduction.   The information processing apparatus according to claim 1, wherein the reduced content is displayed together with an icon in the second display mode.   When a part of the plurality of reduced contents is displayed on the display device and the reduced content corresponding to the acquired identifier is not displayed on the display device, the display control unit displays the icon separately from the reduced content. The information processing apparatus according to claim 3, wherein the information processing apparatus is controlled to display on the display apparatus. Receiving means for receiving, from the external device, a notification that the predetermined process has been executed on the main body content associated with the transmitted identifier;
5. The information processing according to claim 1, wherein the display control unit controls to display the content in the first display mode in response to the reception of the notification. 6. apparatus. Selecting means for selecting any one of the plurality of reduced contents in response to a user operation;
6. The information processing apparatus according to claim 1, further comprising: a second transmission unit configured to transmit an identifier of the selected reduced content and an instruction to start reproduction of the main content associated with the identifier to an external device. The information processing apparatus according to claim 1. A control method for an information processing apparatus for displaying a list of reduced contents associated with an identifier capable of identifying main body content on a display device,
Obtaining an identifier of main body content being played on an external video playback device;
Of the plurality of reduced contents displayed in a list, the reduced content associated with the acquired identifier is displayed on the display device in a second display mode different from the first display mode of other reduced content. Controlling step;
Receiving an instruction to execute a predetermined process on the main body content related to the reduced content in response to a user operation on the reduced content displayed in the second display mode;
A control method comprising: a step of transmitting an identifier for the reduced content and an instruction to execute a predetermined process on the main body content associated with the identifier to an external device. A computer that realizes an information processing apparatus that displays a list of reduced contents associated with identifiers that can identify main body contents on a display device;
Obtaining an identifier of main body content being played on an external video playback device;
Of the plurality of reduced contents displayed in a list, the reduced content associated with the acquired identifier is displayed on the display device in a second display mode different from the first display mode of other reduced content. Controlling step;
Receiving an instruction to execute a predetermined process on the main body content related to the reduced content in response to a user operation on the reduced content displayed in the second display mode;
A program for executing the step of transmitting an identifier for the reduced content and an instruction for executing a predetermined process to the main body content associated with the identifier to an external device.

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