JP2015018163A - Video display device and video display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the convenience of a video display device including a multiple screen display function.SOLUTION: A video display device includes a multiple screen display function to display multiple screens at the same time. The video display device includes a control unit (not illustrated) that detects, when the multiple screen display function is used, a change in the positional relationship between a plurality of viewers on the basis of information acquired from an imaging device (not illustrated) and performs switching processing of the states of the screen to be displayed according to the detected change in the positional relationship.

Description

  The present invention relates to a video display device and a video display control method.

  2. Description of the Related Art Conventionally, some video display devices such as a television receiver have a function of dividing a screen and displaying a plurality of screens simultaneously (multi-screen display function). And in a video display device having a multi-screen display function, when the viewer performs an operation input such as a remote control operation, according to the distance between the viewer who performed the operation input and the video display device, Some automatically set the arrangement and size of a plurality of screens (see, for example, Patent Document 1).

JP 2007-288379 A

  By the way, when a plurality of viewers use the multi-screen display function provided in the video display device to view a video, one of the viewers moves between locations and the positional relationship between the viewers ( (Relative positional relationship) may change. As such a change in the positional relationship, for example, a case where the distance relationship from the video display device changes or a case where the distance from the video display device does not change but the positional relationship in the horizontal direction or the vertical direction changes is assumed. The In addition, in the case where the relationship of the distance from the video display device changes, it may be assumed that any viewer leaves the position where the video display device can be viewed. When such a change in the positional relationship occurs, the screen state (screen layout, screen size, etc.) before the change in the positional relationship may be felt inconvenient for the viewer.

  In the prior art, in such a case, it is necessary to perform a key operation such as a remote control operation to change the arrangement or size of a plurality of screens. However, if a key operation such as a remote control operation is necessary every time the positional relationship between the viewers changes, it is considered that the viewer feels troublesome (a burden). The operation keys (keys provided on the remote control and the device main body) for changing the arrangement and size of multiple screens should always be near the viewer, but in reality the remote control etc. is far from the viewer. In many cases, the above-described annoyance is likely to occur.

  In view of the above, an object of the present invention is to improve the convenience of a video display device having a multi-screen display function. Another object of the present invention is to provide a video display control method capable of reducing the burden on the viewer.

  In order to achieve the above object, the video display device of the present invention is a video display device having a multi-screen display function for simultaneously displaying a plurality of screens, and when the multi-screen display function is used, A configuration (first configuration) that includes a control unit that detects a change in the positional relationship between a plurality of viewers based on the obtained information and performs a process of switching a screen state to be displayed according to the detected change in the positional relationship. )It has become. The imaging device may be configured to be incorporated in the video display device or may be configured to be externally attached.

  According to this configuration, when the multi-screen display function is used, the control unit detects a change in the positional relationship (relative positional relationship) between a plurality of viewers, and displays the screen according to the detected content. It is configured to perform processing for switching states (for example, screen layout and screen size). For this reason, when the multi-screen display function is used, for example, even when some or all viewers move from place to place or some viewers leave the video display device, Does not require key operation to switch the screen state.

  In the video display device having the first configuration, when the multi-screen display function is used, the control unit performs a process of storing an object to be displayed on each screen in association with the viewer, It is preferable that the screen state switching process is performed in consideration of stored contents (second configuration). According to this configuration, it is easy to provide an appropriate screen state corresponding to various movements of a plurality of viewers. An object to be displayed on each screen is, for example, a television program or video content recorded on an optical disc. When the screen state switching process is performed, it is preferable to update the above-described stored contents.

  In the video display device having the first or second configuration, it is preferable that the screen state switching process includes a process of switching a screen size (third configuration). This configuration can easily provide an appropriate screen state, for example, when the distance from the video display device changes among a plurality of viewers.

  In the video display device having any one of the first to third configurations, a configuration (fourth configuration) in which the screen state switching processing includes processing for switching screen layouts is preferable. Switching the screen layout is intended to include a process of switching a target (such as a television program) displayed on each screen. According to this configuration, it is easy to provide an appropriate screen state when, for example, the positional relationship in the horizontal direction or the vertical direction changes among a plurality of viewers.

  In the video display device having any one of the first to fourth configurations, the screen state switching process includes a process of stopping the multi-screen display function and switching to a single screen display (fifth configuration). ) Is preferred. According to this configuration, it is easy to provide an appropriate screen state when, for example, any one of a plurality of viewers leaves the video display device.

  In the video display device having the fifth configuration, when the control unit performs the process of displaying the one screen, the control unit stops display on the video display device with respect to a display device connected to be communicable. The structure (6th structure) which performs the process which transmits the data of the display object which were performed to the said display apparatus may be sufficient. According to this configuration, for example, when one of the viewers watching the video display device moves to another room, the viewer who has moved the room first does not perform any special key operation. You can get a situation where you can keep watching the video you were watching.

  The video display device having any one of the first to sixth configurations further includes an audio output unit that outputs audio, and the control unit outputs from the audio output unit according to a change in the positional relationship. It is preferable that the audio state switching process is performed (seventh configuration). According to this configuration, it is possible to provide an appropriate state not only for the screen state but also for the sound.

  In the video display device having the seventh configuration, the control unit is a second screen having a larger screen size than the first screen in which no sound is output when the multi-screen display function is used. In the case where there is, a configuration (eighth configuration) for performing a process of displaying a caption corresponding to the first screen in the second screen is preferable. According to this configuration, it is easy to view subtitles of an appropriate size.

  In order to achieve the above object, a video display control method (control method by a video display control device) of the present invention is a video display control method in a case where a plurality of screens are displayed simultaneously, and is based on imaging information. And a step of detecting a change in the positional relationship among a plurality of viewers, and a step of performing a process of switching a screen state to be displayed according to the detected change in the positional relationship (ninth configuration). It has become. In this configuration, the plurality of screens may be obtained by dividing one screen, or may be obtained by a plurality of monitors.

  According to this configuration, when the positional relationship with other viewers changes, it is convenient because it is possible to view the video in an appropriate screen state without any key operation by any of the viewers. is there.

  ADVANTAGE OF THE INVENTION According to this invention, the convenience of the video display apparatus provided with a multi-screen display function can be improved. Furthermore, according to the present invention, it is possible to provide a video display control method that can reduce the burden on the viewer.

1 is a functional block diagram showing a configuration of a video display device according to an embodiment of the present invention. The flowchart which shows the flow in which a screen state is switched automatically, when the 2 screen display function is used in the video display apparatus which concerns on embodiment of this invention. Schematic diagram for explaining a first specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode Schematic diagram for explaining a second specific example of a screen state switching process accompanying a change in the positional relationship among a plurality of viewers in the two-screen display mode Schematic diagram for explaining a third specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode. Schematic diagram for explaining a fourth specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode Schematic diagram for explaining a fifth specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode Schematic diagram for explaining a sixth specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode Schematic diagram for explaining a seventh specific example of a screen state switching process accompanying a change in the positional relationship among a plurality of viewers in the two-screen display mode

Hereinafter, embodiments of a video display device and a video display control method according to the present invention will be described in detail with reference to the drawings.
<Schematic configuration of video display device>

  FIG. 1 is a functional block diagram showing a configuration of a video display device 1 according to an embodiment of the present invention. The video display device 1 according to the embodiment of the present invention is a television receiver. As shown in FIG. 1, an antenna 2 and an external device 3 are connected to the video display device 1. The video display device 1 receives a television (TV) broadcast signal (digital signal) transmitted from a broadcasting station with a high-frequency radio wave of a predetermined frequency via an antenna 2. Further, the video display device 1 receives a video signal and an audio signal (in some cases, only a video signal may be received) from the external device 3. Examples of the external device 3 include a hard disk drive device, a memory card, an optical disc player, an optical disc recorder, a game device, a digital camera, a video camera, and a network server. The number of external devices 3 connected to the video display device 1 may be one, or a plurality of external devices 3.

  The first and second tuners 11 and 12 are devices for receiving the TV broadcast signal of the channel selected by the viewer (user) via the antenna 2. Since the video display device 1 includes a plurality of (two in this example) tuners 11 and 12, it is possible to simultaneously display a plurality of TV programs (display using a multi-screen display function).

  The first front-end processing unit 13 performs demodulation and error correction processing of the TV broadcast signal received by the first tuner 11 and separates necessary TS (Transport Stream) packets from the multiplexed signals. Then, the first front end processing unit 13 supplies necessary TS packets to each block in the video display device 1. The second front end processing unit 14 performs the same processing as the first front end processing unit 13 on the TV broadcast signal received by the second tuner 12.

  The video / audio processing unit 15 includes an MPEG video decoder and an MPEG audio decoder that decode TS packets including video signals and audio signals input from the front end processing units 13 and 14. The video / audio processing unit 15 includes a character information decoder that decodes signals including character information input from the front-end processing units 13 and 14 and extracts character information. The video / audio processing unit 15 receives a signal including a video signal and an audio signal from an external device 3 via an input terminal (not shown), and the video / audio processing unit 15 receives an input from the external device 3. The signal processing is also executed as appropriate.

  The video / audio processing unit 15 includes a circuit that synthesizes video signals input from two different blocks and generates a divided screen by dividing the screen into two. The circuit appropriately combines the extracted character information with the combined screen. The two different blocks described above may be the first front-end processing unit 13 and the second front-end processing unit 14, or one of the two front-end processing units 13 and 14, It may be an external device 3. In addition, when there are a plurality of external devices 3, both of the two blocks described above may be external devices.

  The video signal processed by the video / audio processing unit 15 is output to the monitor unit 17 via an OSD (On Screen Display) unit 16. The monitor unit 17 displays an image on the monitor screen according to the video signal received from the OSD unit 16. The OSD unit 16 processes the video signal input from the video / audio processing unit 15 and generates a video signal on which a predetermined display image is superimposed. The audio signal processed by the video / audio processing unit 15 is output to the monitor unit 17 without passing through the OSD unit 16. The monitor unit 17 includes a speaker (audio output unit), and the monitor unit 17 outputs audio according to the received audio signal.

  The memory 18 temporarily stores the signal decoded by the video / audio processing unit 15. Further, the memory 18 stores display image data to be superimposed on the video signal decoded by the video / audio processing unit 15. The control unit 19 includes a ROM (Read On Memory) and a RAM (Random Access Memory) in addition to a CPU (Central Processing Unit). The control unit 19 executes various processes according to a program stored in the ROM, and controls the operation of the entire video display device 1.

The input unit 20 is provided so that a viewer (user) of the video display device 1 can input a command to the device. The input unit 20 may be, for example, an input button provided on the apparatus main body and / or a remote controller used in combination with a receiving unit (provided on the apparatus main body). The imaging unit (imaging device) 21 is provided for imaging a viewer who is in front of the video display device 1 (monitor screen). The imaging unit 21 may be configured to be built in the video display device 1 as in the present embodiment, or may be configured to be externally disposed around the video display device 1. The imaging unit 21 can be constituted by, for example, a CCD (Charge-Coupled Device) camera or the like.
<Characteristic configuration related to video display>

  The video display device 1 according to the present embodiment automatically displays a screen state according to a change in a positional relationship (relative positional relationship) among a plurality of viewers when the two-screen display function is used. It has the feature in the structure which performs the process which switches. Hereinafter, this characteristic configuration will be described in detail.

  FIG. 2 is a flowchart showing a flow in which the screen state is automatically switched when the two-screen display function is used in the video display device 1 according to the embodiment of the present invention. The two-screen display function is started, for example, when a two-screen mode key (not shown) provided in the input unit 20 is operated. In the two-screen mode (a state where the two-screen display function is used), the screen display of the monitor screen is divided and two screens are displayed simultaneously. The screen state (screen size, screen layout, etc.) at the start of the two-screen mode may be configured to be manually set by the viewer or may be configured to be automatically set.

  As for the target (display target) displayed on the two screens, either screen may be a TV program, or one is a TV program and the other is a video (video content or the like) output from the external device 3. It may be. When there are a plurality of external devices 3, any screen may be a video output from the external device 3.

  When the two-screen mode is started, the control unit 19 starts the initial setting for the screen state automatic switching process (step S1). Specifically, the control unit 19 stores the positional relationship between a plurality of viewers at the start of the two-screen mode based on information obtained from the imaging unit 21. In addition, the control unit 19 stores a target (TV program or the like) displayed on each screen and its viewer (viewer image data) in association with each other.

  For the correspondence between the display target of each screen and its viewer, for example, the viewer's face imaged by the imaging unit 21 at the start of the two-screen mode may be used. In this case, for example, at the start of the two-screen mode, for each screen, the viewer (one or more) who is in front of the screen is determined based on information from the imaging unit 21, and the display target of each screen is determined according to the determination. The viewer may be associated with the viewer.

  In addition, a remote controller may be used as another method for the above-described association. For example, the ID may be determined for each of a plurality of remote controllers, and the display target of each screen may be associated with the viewer based on information indicating which remote controller is used to operate each screen. In addition, a dedicated button for each user may be provided in one remote controller, and the above-described association may be performed using the dedicated button. In the example of using the remote controller, it is necessary to store the above-described ID or dedicated button in association with the user's face image or the like in the storage unit of the apparatus 1 in advance.

  When the initial setting is completed, the control unit 19 acquires information from the imaging unit 21 every predetermined period and checks whether or not the positional relationship between the plurality of viewers has changed (step S2). The positional relationship is changed by comparing the positional relationship stored in the previous initial setting with the positional relationship currently acquired. It may be determined according to a preset threshold as to how much the positional relationship has changed.

  When it is determined that there is a change in the positional relationship between the viewers (Yes in step S2), the control unit 19 performs a screen state switching process according to the change in the positional relationship (step S3). The screen state change may include a screen size change, a screen layout change, and a display target (TV program or the like) change. A specific example of the change in the positional relationship between the viewers and the screen state switching process according to the change will be described later.

  When the screen state switching process is performed, the control unit 19 updates the previously stored positional relationship between the viewers (step S4). Specifically, after changing the screen state, the positional relationship between the viewers obtained from the imaging unit 21 is stored in place of the previously stored positional relationship. Thereafter, the control unit 19 confirms whether or not the two-screen mode is continued (step S5). When the two-screen mode is continued (Yes in step S5), the process returns to step S2. On the other hand, when the two-screen mode is terminated (No in step S5), the screen state automatic switching process in the two-screen mode is terminated.

  If it is determined in step S2 that there is no change in the positional relationship between the viewers (No in step S2), the processing from step S5 is performed. When it is determined in step S2 that there is no change in the positional relationship between the viewers, the positional relationship between the viewers stored previously (for example, stored in the initial setting) is updated to the latest positional relationship between the viewers. Then, the process after step S5 may be performed.

  In addition, it is conceivable that the viewer changes the viewing target (viewing program or the like) after associating the display target of each screen with the viewer in the initial setting. For this reason, it is preferable that the configuration regarding the association between the display target of each screen and the viewer is updated each time the viewer changes the viewing target.

Hereinafter, a specific example of the screen state automatic switching process in accordance with the change in the positional relationship among a plurality of viewers in the two-screen display mode will be described. In the following specific example, it is assumed that there is one viewer for each screen in the two-screen mode. The description will be made assuming that the first viewer V1 is watching TV program A (an example of a display target) and the second viewer V2 is watching TV program B (an example of a display target). A specific example of the switching process described below may be used alone in the video display device 1, but a plurality of processes may be combined in a possible range. Further, when the video display device 1 includes a plurality of switching processes, the user may be able to select a switching processing function to be used according to the preference.
(First specific example)

  FIG. 3 is a schematic diagram for explaining a first specific example of a screen state switching process associated with a change in the positional relationship between a plurality of viewers in the two-screen display mode. In FIG. 3, a broken line frame is shown on the monitor screen 30, and ON / OFF is described in association with TV programs A and B in the frame. This ON / OFF indicates the state of audio output. This also applies to the following FIGS. 4 to 9 (second to seventh specific examples).

  In the specific example shown in FIG. 3, the first viewer V1 and the second viewer V2 are initially equidistant from the monitor screen 30 (in other words, the video display device 1). Then, it is assumed that the positional relationship changes such that the distance from the monitor screen 30 is closer to the second viewer V2 than to the first viewer V1.

  When the first viewer V1 and the second viewer V2 are equidistant from the monitor screen 30, the size of the screen for displaying the TV program viewed by each viewer V1, V2 (left and right screen size) ) Is the same. Thereafter, with respect to the distance from the monitor screen 30, the second viewer V2 is closer than the first viewer V1 (the positional relationship between the viewers changes), and the first viewer V1 The viewing screen is enlarged and the screen viewed by the second viewer V2 is reduced. The sound is output only on the screen side viewed by the second viewer V2 close to the monitor screen 30.

  In this example, when the two viewers V1 and V2 have the same distance from the monitor screen 30, the screen size switching process is performed so that the sizes of the screens to be viewed by each viewer are the same. Is called. Further, when a difference in distance from the monitor screen 30 occurs between the two V1 and V2, a screen size switching process is performed so that the far screen is large and the near screen is small. As for the sound, only the sound of the screen (TV program) viewed by a viewer at a close distance is output. When the two viewers V1 and V2 are at the same distance from the monitor screen 30, audio is output from either one of the screens. Subtitle display may be automatically executed on the screen on which no sound is output.

In this example, regarding the distance from the monitor screen 30, the screen size is switched by determining which of the viewers in front of each screen is near (far). For this reason, in this example, the display target (TV program or the like) on each screen may not be associated with the viewer.
(Second specific example)

  FIG. 4 is a schematic diagram for explaining a second specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode. This second specific example is substantially the same as the case of the first specific example. However, this example differs from the first specific example in that only the sound of the screen (TV program) viewed by the viewer who is far from the monitor screen 30 is output. In response to this difference, a device has been devised in the screen state switching process.

In this example, no sound is output on the side where the screen size is reduced (the screen side on which the TV program B is displayed). For this reason, even if the caption 31 is displayed in order to compensate for the fact that no sound is output, it is considered that the viewer (the second viewer V2 in this example) is difficult to read the caption 31. . In order to solve this problem, the subtitle 31 corresponding to the screen on the smaller screen size (subtitle 31 corresponding to the TV program B) is displayed on the larger screen size (the side displaying the TV program A). It has come to be.
(Third example)

  FIG. 5 is a schematic diagram for explaining a third specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode. In the specific example shown in FIG. 5, first, the first viewer V <b> 1 and the second viewer V <b> 2 are equidistant from the monitor screen 30. The distance from the monitor screen 30 does not change between the two V1 and V2, but it is assumed that the positional relationship in the vertical direction (vertical direction) changes. As the change in the positional relationship in the vertical direction, for example, when one of the two viewers V1 and V2 sitting at the beginning and watching the video (the second viewer V2 in this example) stands up. Etc. are assumed.

  When the first viewer V1 and the second viewer V2 are both sitting at an equal distance from the monitor screen 30, the screen for displaying the TV program viewed by each viewer V1, V2 is as follows. Are arranged in parallel in the left-right direction, and the screen size is the same. Thereafter, there is no change in the place where the two viewers V1 and V2 exist, but one viewer (the viewer V2) stands up from the sitting state (change in the positional relationship between the viewers), and each viewer V1. , The layout of the screen viewed by V2 has been changed. Specifically, the screen layout is switched so that the screen viewed by the first viewer V1 is down and the screen viewed by the second viewer V2 is up. Here, since the distance relationship between the two viewers V1 and V2 from the monitor screen 30 is the same, the two screen sizes are the same size, but depending on the difference in the distance relationship, the two screen sizes differ. May be attached. Further, since the distance from the monitor screen 30 remains the same, the switching process is not performed particularly for the sound.

In this example, when it is determined that there is no difference between the two viewers V1 and V2 with respect to the relationship in the vertical direction (vertical direction), the screen layouts to be viewed by each other are arranged side by side. Then, screen layout switching processing is performed. Further, when it is determined that there is a difference between the two viewers V1 and V2 regarding the vertical relationship, the screen viewed by the higher viewer is arranged on the upper side and is low The screen layout switching process is performed so that the screen viewed by the other viewer is arranged on the lower side.
(Fourth specific example)

  FIG. 6 is a schematic diagram for explaining a fourth specific example of the screen state switching process in accordance with the change in the positional relationship between a plurality of viewers in the two-screen display mode. In the specific example shown in FIG. 6, first, the first viewer V1 is closer to the monitor screen 30 than the second viewer V2. The relationship between the distance from the monitor screen 30 does not change between the two V1 and V2, but it is assumed that the positional relationship in the left-right direction is interchanged.

  In the initial state, as in the case of the first specific example, the screen (displaying TV program A) viewed by the first viewer V1 close to the monitor screen 30 is displayed from the monitor screen 30. The screen is smaller than the screen (displaying TV program B) viewed by the distant second viewer V2. As for the sound, only the sound of the screen viewed by the first viewer V1 close to the monitor screen 30 is output. Thereafter, the positions of the first viewer V1 and the second viewer V2 in the left-right direction are switched (the positional relationship between the viewers is changed), and the layout of the screens viewed by the viewers V1 and V2 is also switched. ing. In addition, since the relationship with respect to the distance from the monitor screen 30 remains the same between the two viewers V1 and V2, the switching process is not particularly performed on the sound.

In this example, when a change in position in a certain direction (for example, left and right direction) occurs between the two viewers V1 and V2, the position of the screen that each viewer V1 and V2 is viewing is changed. A screen layout switching process is performed so that the screens are switched. In other words, a screen state switching process is performed so that the position of a display target (TV program or the like) being viewed is switched in response to the switching of positions between viewers.
(Fifth example)

  FIG. 7 is a schematic diagram for explaining a fifth specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode. In the specific example shown in FIG. 7, first, the first viewer V1 is closer to the monitor screen 30 than the second viewer V2. Thereafter, the first viewer V1 continues to watch the TV program A at the same position, but it is assumed that the second viewer V2 disappears from the front of the video display device 1 (monitor screen 30). . Note that the absence of the viewer from the front of the video display device 1 corresponds to a state in which the viewer is not imaged by the imaging unit 21.

  In the initial state, as in the case of the first specific example, the screen (displaying TV program A) viewed by the first viewer V1 close to the monitor screen 30 is displayed from the monitor screen 30. The screen is smaller than the screen (displaying TV program B) viewed by the distant second viewer V2. As for the sound, only the sound of the screen viewed by the first viewer V1 close to the monitor screen 30 is output. Thereafter, the second viewer V2 disappears (changes in the positional relationship between the viewers are seen), and the screen (TV program A) that the first viewer V1 is viewing is displayed on the monitor screen 30. ) Is displayed. Note that the switching process is not performed for audio. In other words, the absence of the second viewer V2 switches to the one-screen mode in which only the TV program A that the first viewer V1 is viewing is displayed.

In this example, when one of the two viewers V1 and V2 disappears, only the viewing program (display target) of one viewer who continues to watch in front of the monitor screen 30 is displayed. As described above, the screen state switching process is performed. In other words, in this example, when one of the two viewers disappears, the two-screen mode is stopped (terminated) and the process of switching to the one-screen mode (normal mode) is performed. In the case where there are no two viewers (when the two viewers are not detected for a predetermined period by the imaging unit 21), for example, a configuration in which the video display device 1 is turned off, A configuration in which only the screen display is turned off and the audio output is maintained may be employed.
(Sixth specific example)

  FIG. 8 is a schematic diagram for explaining a sixth specific example of the screen state switching process in accordance with the change in the positional relationship among a plurality of viewers in the two-screen display mode. The sixth specific example is substantially the same as the fifth specific example. However, in this example, when the second viewer V2 disappears from the front of the video display device 1 (monitor screen 30), the audio of the TV program A being viewed by the first viewer V1 is output. Instead, the sound of the TV program B that the second viewer V2 was watching is output.

According to this example, the second viewer V2 who has disappeared from the front of the video display device 1 can hear only the sound. The first viewer V1 can enjoy the program being viewed, for example, by displaying subtitles, instead of outputting audio.
(Seventh specific example)

  FIG. 9 is a schematic diagram for explaining a seventh specific example of a screen state switching process accompanying a change in the positional relationship between a plurality of viewers in the two-screen display mode. This seventh example is substantially the same as the case of the fifth example. However, in this example, there is a sub-monitor 4 (display device) that is communicably connected to the video display device 1, and this is different from the fifth specific example.

  In this example, when the second viewer V2 disappears from the front of the video display device 1, the screen (TV program A) that the first viewer V1 is viewing is displayed on the video display device 1. ) Only, and only the sound corresponding to the screen (the sound of TV program A) is output. This is the same as the fifth example. However, the control unit 19 of the video display device 1 transmits data related to the TV program B (the program that the second viewer B was viewing) whose video display has been stopped to the sub-monitor 4. For this purpose, the video of the TV program B is displayed on the sub monitor 4 and the sound of the program is output.

According to this example, the second viewer V2 who is no longer in front of the video display device 1 is the TV program that was previously viewed on the sub-monitor 1 installed at a location away from the video display device 1. (Display target) can be watched continuously.
<Effects of video display device>

As described above, in the video display device 1 according to the embodiment of the present invention, when the two-screen display mode is used, the positional relationship between a plurality of viewings is based on the information obtained from the imaging unit 21. Detect changes. Then, the screen state to be displayed is automatically switched according to the detection result. For this reason, in the two-screen mode, the viewer of the video display device 1 does not need to perform a key operation to switch, for example, the screen size or the screen layout according to the change in the positional relationship between the viewers. That is, the video display device 1 according to the embodiment of the present invention is excellent in convenience.
<Others>

  The embodiment described above is an exemplification of the present invention, and the scope of application of the present invention is not limited to the configuration of the embodiment described above. Of course, the above embodiments may be modified as appropriate without departing from the technical idea of the present invention.

  For example, in the embodiment described above, the case where the multi-screen display function is the two-screen display function is illustrated. However, the present invention is also applicable to the case where the number of screens displayed by the multi-screen display function is three or more.

  Further, in the embodiment described above, the case where one viewer views each screen when the multi-screen display function is used is shown. However, the present invention is naturally applicable to a case where there are a plurality of viewers viewing each screen. When there are a plurality of viewers viewing each screen, for example, a change in the positional relationship may be detected for the movements of all the viewers of the plurality of viewers. A change in the positional relationship may be detected for the movement of a specific viewer.

  In the embodiment described above, when a change in the positional relationship between a plurality of viewers is detected, the switching process is also performed for the audio output. However, in some cases, the audio output is not switched. It does not matter.

  In addition, in the above, when a plurality of screens are displayed at the same time, when the positional relationship of the viewer is switched, the configuration in which the position of the display target being viewed is switched correspondingly is shown (fourth) See specific examples). In this example, a plurality of screens are obtained by dividing one screen. However, the invention according to this example can also be applied when a plurality of screens are configured by a plurality of monitors (display devices).

1 Video display device 4 Sub monitor (display device)
19 Control Unit 21 Imaging Unit (Imaging Device)
31 Subtitles V1 First viewer V2 Second viewer

Claims (9)

A video display device having a multi-screen display function for simultaneously displaying a plurality of screens,
When the multi-screen display function is used, a screen that detects a change in the positional relationship between a plurality of viewers based on information obtained from the imaging device, and displays a screen according to the detected change in the positional relationship A video display device comprising a control unit that performs a state switching process.   When the multi-screen display function is used, the control unit performs a process of storing an object to be displayed on each screen in association with the viewer, and switches the screen state in consideration of the stored content. The video display device according to claim 1, wherein processing is performed.   The video display device according to claim 1, wherein the screen state switching process includes a process of switching a screen size.   The video display device according to claim 1, wherein the screen state switching process includes a process of switching a screen layout.   5. The video display device according to claim 1, wherein the screen state switching process includes a process of stopping the multi-screen display function and switching to a single screen display. 6.   When the control unit performs the process of displaying the one screen, the control unit transmits, to a display device connected to be communicable, display target data whose display on the device is stopped, to the display device. The video display device according to claim 5, wherein: An audio output unit for outputting audio;
The video display device according to claim 1, wherein the control unit performs a process of switching a voice state output from the voice output unit in accordance with a change in the positional relationship.   In the case where the multi-screen display function is used and there is a second screen having a larger screen size than the first screen in which no sound is output, the control unit The video display device according to claim 7, wherein a process of displaying a subtitle corresponding to a screen in the second screen is performed. A video display control method when a plurality of screens are displayed simultaneously,
Detecting a change in a positional relationship between a plurality of viewers based on imaging information;
A step of switching a screen state to be displayed in accordance with the detected change in the positional relationship;
A video display control method comprising: