Display device and display control method

Abstract

To provide a display device and a display control method capable of suppressing input switching that is not intended by a user.SOLUTION: The display device comprises: a display unit that displays a video; a display control unit that controls the display unit; an input unit into which a video signal and a switching requirement signal are input from external equipment; and a storage unit that stores equipment information of the external equipment and switching registration information associated with switching validity / invalidity information indicating a validity / invalidity of the input switching. When the switching validity / invalidity information associated with the equipment information of the external equipment which is a transmission source of the switching requirement signal indicates a permission for the input switching, the display control unit displays a video based on the video signal on the display unit. When the switching validity / invalidity information associated with the equipment information of the external equipment which is the transmission source of the switching requirement signal indicates a prohibition of the input switching, the display control unit does not switch a video source of the display unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a display device and a display control method. [Background technology]

[0002] BACKGROUND ART A television (display device) having a plurality of input paths for video signals has been disclosed in the past (see Patent Document 1).

[0003] The operator uses the input switch button on the television to specify the device that will receive the video signal, i.e., the input source of the video signal. The television is equipped with an input switch unit that switches inputs. When the input switch unit receives a command from the external device to switch the input of the display unit to the input from the external device, it switches the input of the display unit to the input from the external device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-010280 Summary of the Invention [Problem to be solved by the invention]

[0005] For example, if a command to switch input is received from an external device while the user is watching a television program, the display on the display unit may be switched unintentionally by the user.

[0006] A main object of the present disclosure is to provide a display device and a display control method that can prevent input switching unintentionally by the user. [Means for solving the problem]

[0007] A display device according to one embodiment includes a display unit that displays video, a display control unit that controls the display unit, an input unit to which a video signal and a switching request signal are input from an external device, and a memory unit that stores switching registration information that associates device information of the external device with switching availability information indicating whether input switching is possible. When the switching availability information associated with the device information of the external device that is the sender of the switching request signal indicates that input switching is permitted, the display control unit displays video based on the video signal, and when the switching availability information associated with the device information of the external device that is the sender of the switching request signal indicates that input switching is prohibited, the display control unit does not switch the video source displayed by the display unit.

[0008] A display control method according to one embodiment stores switching registration information that associates device information of an external device with switching possibility information indicating whether input switching is possible, and if the switching possibility information associated with the device information of the external device that is the sender of the switching request signal indicates that the input switching is permitted, causes a display unit to display video based on a video signal from the external device, and if the switching possibility information associated with the device information of the external device that is the sender of the switching request signal indicates that the input switching is prohibited, does not switch the video source displayed by the display unit. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram of a display device according to an embodiment. [Figure 2] FIG. 2 is an example of a display screen showing switchability information on the display device. [Figure 3] FIG. 3 is a flowchart of a first operation example of the display device. [Figure 4] FIG. 4 is an example of a display screen showing a confirmation message on the display device. [Figure 5] FIG. 5 is a flowchart of a second operation example of the display device. [Figure 6] FIG. 6 is a flowchart of a third operation example of the display device. [Figure 7] FIG. 7 is a block diagram of a modified example of a display device according to a modified example. [Figure 8] FIG. 8 is an example of a display screen showing notification information on a display device according to a modified example. [Figure 9] FIG. 9 is a flowchart of an example of the operation of a display device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an example of a preferred embodiment of the present invention will be described. However, the following embodiment is merely an example, and the present invention is not limited to the following embodiment.

[0011] A display device 1 of this embodiment will be described with reference to FIG.

[0012] First, an overview of the display device 1 of this embodiment will be described. The display device 1 of this embodiment is, for example, a liquid crystal television or an organic EL (Electro Luminescence) television, and is configured to display programs and the like based on received television broadcasts.

[0013] The display device 1 also includes an external input terminal 12. An external device 2 that outputs a video signal can be connected to the external input terminal 12. The display device 1 is configured to be able to switch the video source to be displayed on the display unit 11 to a video based on a video signal input to the external input terminal 12. In the following description, switching the video source to be displayed on the display unit 11 is also referred to as input switching.

[0014] A switching request signal is included in the output signal of the external device 2. The switching request signal includes information requesting the destination display device 1 to switch the video source to a video based on the video signal of the source external device 2.

[0015] The display device 1 of this embodiment stores switching registration information that associates device information of the external device 2 with switchability information that indicates whether input switching is possible. The display device 1 switches the video source to be displayed to the video of the external device 2 that sent the switching request signal only when it receives a switching request signal from an external device 2 that permits input switching. On the other hand, when it receives a switching request signal from an external device 2 that prohibits input switching, the display device 1 does not switch the video source to be displayed.

[0016] As a result, the display device 1 of this embodiment can prevent input switching unintentionally by the user. Therefore, for example, even if a switching request signal is transmitted from the external device 2 that has prohibited input switching while the user is watching a TV program, input switching unintentionally by the user will not occur, and the user can continue watching the TV program.

[0017] The display device 1 of this embodiment will be described in detail below.

[0018] The display device 1 of this embodiment includes a display unit 11, a plurality of external input terminals 12, a processing unit 13, and a storage unit .

[0019] The display unit 11 is a display device such as a liquid crystal display. The display unit 11 displays video. Specifically, the display unit 11 displays video sources such as received television broadcast programs and video from an external device 2 connected to the external input terminal 12. The video sources displayed by the display unit 11 can be switched by a display control unit 132, which will be described later.

[0020] Each of the plurality of external input terminals 12 is an interface for connecting to an external device 2. The display device 1 of this embodiment includes four external input terminals 12 as the plurality of external input terminals 12. When distinguishing between the four external input terminals 12, they are referred to as a first external input terminal 12A, a second external input terminal 12B, a third external input terminal 12C, and a fourth external input terminal 12D.

[0021] Each external input terminal 12 is, for example, an HDMI input terminal (HDMI: High-Definition Multimedia Interface, registered trademark). An external device 2 can be connected to the external input terminal 12 via an HDMI cable.

[0022] The external device 2 is a video device that outputs a video signal, such as a recorder, player, or game console. The recorder is, for example, a BD recorder (BD: Blu-ray Disc, registered trademark), a DVD recorder (DVD: Digital Versatile Disc), or an HDD recorder (HDD: Hard Disk Drive), and has recording and playback functions. The player is, for example, a BD player or DVD player, and has playback functions. The external device 2 has an HDMI output terminal and can output a video signal to the display device 1 via an HDMI cable.

[0023] In this embodiment, a first game machine 2A is connected as the external device 2 to a first external input terminal 12A of the display device 1. A second game machine 2B is connected as the external device 2 to a second external input terminal 12B of the display device 1. A first recorder 2C is connected to a third external input terminal 12C of the display device 1. No external device 2 is connected to a fourth external input terminal 12D of the display device 1.

[0024] The output signal of the external device 2 includes a switching request signal in addition to the video signal. The external device 2 transmits the switching request signal at the timing when it starts transmitting the video signal. The switching request signal is a signal that requests the display device 1 to switch the input so that the video from the external device 2 that transmitted the switching request signal is displayed. In other words, the switching request signal is a signal that requests the display device 1 to switch the video source to be displayed to the video from the external input terminal 12 to which the external device 2 that transmitted the switching request signal is connected.

[0025] The processing device 13 includes an input unit 131 and a display control unit 132. The processing device 13 is configured, for example, by a microcomputer having a processor and a memory. That is, the processing device 13 is realized as a computer system having a processor and a memory. The processor executes an appropriate program to function as the input unit 131 and the display control unit 132. The program may be pre-recorded in the memory, or may be provided via a telecommunications line such as the Internet, or may be recorded on a non-transitory recording medium such as a memory card. The processor of the computer system is configured by one or more electronic circuits including a semiconductor integrated circuit (IC) or a large-scale integrated circuit (LSI). The electronic circuits may be integrated into a single chip or may be distributed across multiple chips. The multiple chips may be integrated into a single device or may be distributed across multiple devices. For example, the input unit 131 and the display control unit 132 may be implemented by separate microcomputers, or the input unit 131 and the display control unit 132 may be implemented by multiple microcomputers.

[0026] The input unit 131 is connected to a plurality of external input terminals 12, and receives as input a video signal and a switching request signal from an external device 2.

[0027] The display control unit 132 controls the display unit 11. In this embodiment, the display control unit 132 controls the video to be displayed on the display unit 11 by performing selection control to select the video source to be displayed on the display unit 11. When the user operates an input switching button provided on the main body of the display device 1 or on the remote control, the display control unit 132 performs processing to switch the video source to be displayed on the display unit 11 from a television program and videos input to multiple external input terminals 12 in order.

[0028] Furthermore, when the input unit 131 receives a switching request signal, the display control unit 132 refers to switching registration information stored in the storage unit 14. The storage unit 14 is, for example, a semiconductor memory such as a flash memory. The storage unit 14 stores switching registration information, which is information that associates device information of the external device 2 with switchability information indicating whether input switching is possible. The device information of the external device 2 is information that identifies the external device 2, such as the product name and model number of the external device 2. The output signal of the external device 2 includes the device information. The switchability information is information that indicates whether switching of the video source to be displayed on the display unit 11 is permitted or prohibited when a switching request signal is received from the corresponding external device 2.

[0029] Table 1 shows an example of the switching registration information.

[0030] [Table 1] As shown in Table 1, the switching permission information of the first game machine 2A is "prohibited", the switching permission information of the second game machine 2B is "permitted", and the switching permission information of the first recorder 2C is "prohibited".

[0031] When the input unit 131 receives a switching request signal and device information, the display control unit 132 searches for the device information from the switching registration information stored in the memory unit 14 and refers to the switching availability information associated with this device information.

[0032] When the referenced switching availability information indicates "permission" of input switching, the display control unit 132 performs input switching in accordance with the switching request signal. That is, the display control unit 132 switches the video source to be displayed on the display unit 11 to the video from the external input terminal 12 to which the external device 2 that transmitted the switching request signal is connected. As a result, the video from the external device 2 that transmitted the switching request signal is displayed on the display unit 11. For example, the switching availability information of the second game machine 2B is "permission" (see Table 1). Therefore, when a switching request signal is transmitted from the second game machine 2B, the display control unit 132 performs input switching so that the video from the second external input terminal 12B is displayed. As a result, the video from the second game machine 2B is displayed on the display unit 11. Note that when the video from the external device 2 that transmitted the switching request signal is already being displayed on the display unit 11, input switching is not performed, and the video from the external device 2 continues to be displayed on the display unit 11.

[0033] On the other hand, if the referenced switching availability information indicates "prohibition" of input switching, the display control unit 132 does not follow the switching request signal and does not switch the input. Therefore, if a television program or an image of another external device 2 is displayed on the display unit 11, this image continues to be displayed on the display unit 11. For example, the switching availability information of the first game machine 2A is "prohibition" (see Table 1). Therefore, when a switching request signal is transmitted from the first game machine 2A, the display control unit 132 does not switch the input (see Table 1). To display the image of the first game machine 2A, the user needs to operate an input switching button provided on a remote control or the like. Note that if an image of the external device 2 that transmitted the switching request signal is already being displayed on the display unit 11, the image of the external device 2 continues to be displayed.

[0034] The switching registration information stored in the storage unit 14 can be changed. As shown in FIG. 2, the switching registration information stored in the storage unit 14 is displayed on a setting screen on the display unit 11. In the example shown in FIG. 2, a list of switching registration information is displayed on the display unit 11 under the title "Automatic Input Switching," and switching availability information is displayed as a toggle button. In the example shown in FIG. 2, when the switching availability information is "Allowed," the toggle button is shifted to the right and displayed in color. When the switching availability information is "Prohibited," the toggle button is shifted to the left and displayed in white. The user can check the switching registration information on the setting screen, and can further update the switching availability information by operating the toggle button using a remote control or the like.

[0035] Next, a first operation example of the display device 1 will be described with reference to Fig. 3. Here, input switching processing will be described as the first operation example.

[0036] First, the input unit 131 receives a switching request signal and device information (S1). The display control unit 132 searches for the device information from the switching registration information stored in the storage unit 14, and refers to the switching availability information associated with the device information (S2).

[0037] If the referenced switching permission information indicates that input switching is "permitted" (S3: Yes), the display control unit 132 performs input switching in accordance with the switching request signal (S4). On the other hand, if the referenced switching permission information indicates that input switching is "prohibited" (S3: No), the display control unit 132 does not perform input switching in accordance with the switching request signal (S5).

[0038] As described above, the display device 1 of this embodiment stores switching registration information that associates device information of the external device 2 with switchability information indicating whether input switching is permitted. If the switchability information associated with the device information of the external device that has sent the switching request signal indicates that input switching is permitted, the display unit 11 displays an image based on the video signal. If the switchability information associated with the device information of the external device 2 that has sent the switching request signal indicates that input switching is prohibited, the display unit 11 does not switch the video source displayed.

[0039] As a result, the display device 1 of this embodiment can prevent input switching unintentionally by the user. For example, even if a switching request signal is transmitted from the external device 2 that has prohibited input switching while the user is watching a TV program, input switching unintentionally by the user will not occur, and the user can continue watching the TV program.

[0040] Next, the registration of the switching registration information in the storage unit 14 will be described.

[0041] There are cases where the received device information is not included in the switching registration information stored in the storage unit 14. In other words, there are cases where the device information of the external device 2 that is the sender of the switching request signal is not stored in the storage unit 14. For example, if the external device 2 is a device that is not connected to the display device 1, the device information is not stored in the storage unit 14. Therefore, the processing device 13 of this embodiment further includes a confirmation unit 133 and a registration unit 134, as shown in FIG. 1, and registers the switching registration information in the storage unit 14.

[0042] When the input unit 131 receives a switching request signal and device information, the confirmation unit 133 determines whether the device information is stored in the storage unit 14. If the device information is not stored in the storage unit 14, the confirmation unit 133 causes the display unit 11 to display a confirmation message asking whether or not to switch the input. In other words, if the device information of the external device 2 that is the sender of the switching request signal is not stored in the storage unit 14, the confirmation unit 133 causes the display unit 11 to display a confirmation message asking whether or not to switch the input. The confirmation message is, for example, a message asking "Do you want to switch the input to an unconfigured device?" as shown in FIG. 4. Furthermore, the confirmation unit 133 causes the display unit 11 to display buttons with the words "Yes" and "No" written on them as answer options for the confirmation message. The user can select either "Yes" or "No" as an answer to the confirmation message, for example, using a remote control. For example, suppose that a second recorder 2D (see FIG. 1), which is an unconnected external device 2, is connected to the fourth external input terminal 12D and the second recorder 2D transmits a switching request signal and device information. In this case, since the device information of the second recorder 2D is not stored in the storage unit 14, the confirmation unit 133 causes the display unit 11 to display a confirmation message such as "Do you want to switch the input to the second recorder?"

[0043] The registration unit 134 stores the switching registration information in the storage unit 14 based on the response to the confirmation message. When the response to the confirmation message is permission (for example, "Yes"), the registration unit 134 stores the switching registration information in which the device information received by the input unit 131 is associated with the switching permission information indicating "permission" in the storage unit 14. For example, when the response to the confirmation message "Do you want to switch the input to the second recorder?" is "permission," the registration unit 134 stores the switching registration information in which the device information of the second recorder is associated with the switching permission information indicating "permission" in the storage unit 14, as shown in Table 2.

[0044] [Table 2] On the other hand, if the answer to the confirmation message is prohibition (for example, "No"), the registration unit 134 stores switching registration information in which the device information received by the input unit 131 is associated with switching permission information indicating "prohibition" in the storage unit 14. For example, if the answer to the confirmation message "Do you want to switch the input to the second recorder?" is "prohibition", the registration unit 134 stores switching registration information in which the device information of the second recorder is associated with switching permission information indicating "prohibition" in the storage unit 14, as shown in Table 3.

[0045] [Table 3] In this way, in the display device 1 of this embodiment, the result of the initial input switching selection by the user is registered as switchability information. Therefore, the user does not have to go through the trouble of registering switch registration information. Furthermore, when a switch request signal is subsequently received from the same external device 2, the same input switching process as the input switching selected initially can be performed, improving convenience.

[0046] Furthermore, the display control unit 132 determines whether to perform input switching based on the response to the confirmation message. If the response to the confirmation message is "permitted," the display control unit 132 performs input switching in accordance with the switching request signal. On the other hand, if the response to the confirmation message is "prohibited," the display control unit 132 does not perform input switching in accordance with the switching request signal.

[0047] Next, a second operation example of the display device 1 will be described with reference to Fig. 5. Here, as the second operation example, a registration process of the switching registration information will be described.

[0048] First, the input unit 131 acquires a switching request signal and device information (S11). The confirmation unit 133 confirms whether the device information is stored in the storage unit 14 (S12).

[0049] If the device information is not stored in the storage unit 14 (S12: Yes), the confirmation unit 133 causes the display unit 11 to display a confirmation message (S13).

[0050] Then, based on the response to the confirmation message, the registration unit 134 stores the switching registration information in the storage unit 14. If the response to the confirmation message is "permitted" (S14: Yes), the registration unit 134 stores the switching registration information in which the device information is associated with the switching permission information indicating "permitted" in the storage unit 14 (S15). On the other hand, if the response to the confirmation message is "prohibited" (S14: No), the registration unit 134 stores the switching registration information in which the device information is associated with the switching permission information indicating "prohibited" in the storage unit 14 (S16).

[0051] Furthermore, if the device information received by the input unit 131 is already stored in the storage unit 14 (S12: No), the switching registration information has already been registered, and therefore the registration process of the switching registration information ends. In this case, as in the first operation example described above (see FIG. 3), the display control unit 132 performs input switching if the switching permission information is "permitted", and does not perform input switching if the switching permission information is "prohibited".

[0052] Here, the operating state of the display device 1 is a standby state. In the standby state, the processing device 13 and the like are in operation, but the display unit 11 is in a stopped state and no image is displayed. When the display device 1 is in the standby state, a switching request signal may be transmitted from the external device 2. As shown in FIG. 1 , the processing device 13 of this embodiment further includes a startup unit 135, which starts up the display unit 11 when it receives a switching request signal while in the standby state.

[0053] When a switching request signal is input to input unit 131 in a standby state, that is, when display unit 11 is stopped, startup unit 135 starts display unit 11. This cancels the standby state, and display unit 11 displays an image.

[0054] When the activation unit 135 activates the display unit 11 in response to the input of a switching request signal while the display control unit 132 is in the standby state, the display control unit 132 switches the input according to the switching request signal, causing the display unit 11 to display an image based on a video signal from the external device 2. Here, when the activation unit 135 activates the display unit 11 in response to the input of a switching request signal while the display control unit 132 is in the standby state, the display control unit 132 switches the input according to the switching request signal, regardless of the switching availability information. For example, assume that the display device 1 receives a switching request signal from the first game machine 2A while in standby. As shown in Table 1 above, the switching availability information for the first game machine 2A is "prohibited." However, because the activation unit 135 activates the display unit 11 in response to the input of a switching request signal while the display control unit 132 is in the standby state, the display control unit 132 ignores the switching availability information, performs input switching according to the switching request signal, and causes the display unit 11 to display an image from the first game machine 2A.

[0055] Next, a third operation example of the display device 1 will be described with reference to Fig. 6. Here, as the third operation example, an input switching process when a switching request signal is received during standby will be described.

[0056] First, the input unit 131 receives a switching request signal and device information (S21). The start-up unit 135 checks whether the display device 1 is in a standby state (S22).

[0057] If the display device 1 is in a standby state (S22: Yes), the start-up unit 135 starts up the display unit 11 (S23). Then, the display control unit 132 switches the input in accordance with the switching request signal (S24).

[0058] On the other hand, if the display device 1 is not in a standby state and the display unit 11 is displaying an image (S22: No), the display unit 11 is already activated, and therefore the activation unit 135 terminates the process. In this case, as in the first operation example described above (see FIG. 3), the display control unit 132 performs input switching if the switching permission information is "permitted," and does not perform input switching if the switching permission information is "prohibited."

[0059] As described above, when the display device 1 is in a standby state, the display unit 11 is stopped, and therefore the user is not viewing the display device 1. Therefore, in the display device 1 of this embodiment, when a switching request signal is received from the external device 2 while the display device 1 is in a standby state, the display unit 11 is started up to switch the input. This eliminates the need to operate an input switching button on a remote control or the like, even if the switching availability information of the external device 2 is "prohibited," thereby improving convenience.

[0060] (Variation) Next, a modified example of the display device 1 will be described with reference to FIG.

[0061] The display device 1 of this modified example differs from the display device 1 of the above embodiment in that it further includes a notification unit 136 that displays a reconfirmation message asking whether or not to switch the input on the display unit 11. Components similar to those of the display device 1 of the above embodiment are denoted by the same reference numerals and descriptions thereof will be omitted.

[0062] In the display device 1 of this modified example, the device registration information stored in the storage unit 14 is further associated with notification information in addition to the device information and switchability information. The notification information is information indicating whether a reconfirmation message is to be displayed. As shown in FIG. 8, the switching registration information including the notification information is displayed on a setting screen on the display unit 11. In the example shown in FIG. 8, a list of switching registration information is displayed on the display unit 11, and the switchability information and notification information are displayed as toggle buttons. In the example shown in FIG. 8, when the notification information is "notification," the toggle button is shifted to the right and displayed in color. When the notification information is "non-notification," the toggle button is shifted to the left and displayed in white. The user can check the switching registration information on the setting screen, and can further set the switchability information and notification information by operating the toggle button using a remote control or the like.

[0063] Furthermore, in this modified example, the notification information can be set to "notify" only when the corresponding switchability information is "prohibited." The notification information cannot be changed from "non-notify" when the corresponding switchability information is "permitted." In the example shown in FIG. 8, the first game machine 2A has switchability information of "prohibited" and notification information of "notify." Furthermore, the second game machine 2B has switchability information of "permitted," so the notification information cannot be changed from "non-notify." Furthermore, the first recorder 2C has switchability information of "prohibited" and notification information of "non-notify."

[0064] When a switching request signal and device information are input to the input unit 131, the notification unit 136 refers to notification information corresponding to the device information. If the referred notification information is "notification," the notification unit 136 causes the display unit 11 to display a reconfirmation message asking whether or not to switch the input. For example, when a switching request signal and device information from the first game machine 2A are received, the notification unit 136 causes the display unit 11 to display a reconfirmation message asking "Do you want to switch the input to the first game machine?" The notification unit 136 also causes the display unit 11 to display buttons with the words "Yes" and "No" written on them as answer options for the reconfirmation message. The user can select either "Yes" or "No" as an answer to the reconfirmation message, for example, using a remote control.

[0065] The display control unit 132 determines whether to perform input switching based on the response to the reconfirmation message. If the response to the reconfirmation message is permission (for example, "yes"), the display control unit 132 performs input switching in accordance with the switching request signal. In other words, even if the switching permission information is "prohibition," the response to the reconfirmation message takes priority and input switching is performed. On the other hand, if the response to the reconfirmation message is prohibition (for example, "no"), the display control unit 132 does not perform input switching in accordance with the switching request signal.

[0066] Next, an example of the operation of the display device 1 of this modified example will be described with reference to Fig. 9. Here, as an example of the operation, a notification process of a reconfirmation message will be described.

[0067] First, the input unit 131 acquires a switching request signal and device information (S31). The display control unit 132 and the notification unit 136 search for the device information from the switching registration information stored in the storage unit 14, and refer to the switching availability information and notification information associated with the device information (S32).

[0068] If the referenced switchability information indicates that input switching is "permitted" (S33: Yes), the display control unit 132 switches the input in accordance with the switch request signal (S34).

[0069] On the other hand, if the referenced switching availability information indicates that input switching is "prohibited" (S33: No) and the notification information indicates "non-notification" (S35: Yes), the display control unit 132 does not follow the switching request signal and does not perform input switching (S36).

[0070] Furthermore, if the referenced switching availability information indicates "prohibition" of input switching (S33: No) and the notification information indicates "notification" (S35: No), the notification unit 136 causes the display unit 11 to display a reconfirmation message (S37).

[0071] Then, the display control unit 132 determines whether to perform input switching based on the response to the reconfirmation message. If the response to the reconfirmation message is permission (for example, "Yes") (S38: Yes), the display control unit 132 performs input switching in accordance with the switching request signal (S39). On the other hand, if the response to the reconfirmation message is prohibition (for example, "No") (S38: No), the display control unit 132 does not perform input switching in accordance with the switching request signal (S40).

[0072] In this way, in this modification, even if the switching permission information of the external device 2 is "prohibited", input switching may be performed depending on the situation. In such a case, by setting the external device 2 to display a reconfirmation message, the user can decide whether to switch the input depending on the situation each time, thereby improving convenience.

[0073] In this modified example, when the switching possibility information is "allowed," the notification information cannot be changed from "non-notification," but this is not limited to this, and the notification information may be configured to be changeable from "non-notification" to "notification." [Explanation of symbols]

[0074] 1 Display device 11 Display section 131 Input section 132 Display control unit 133 Verification Department 134 Registration Department 135 Starting part 136 Notification Department 14 Storage section

Claims

1. a display unit that displays an image; a display control unit that controls the display unit; an input unit to which a video signal, a switching request signal, and device information are input from an external device; a storage unit that stores switching registration information that associates the device information with switching availability information that indicates whether input switching is possible, The display control unit When the switching permission information associated with the device information of the external device that is a source of the switching request signal indicates that the input switching is permitted, displaying an image based on the video signal on the display unit; When the switchability information associated with the device information of the external device that is the source of the switch request signal indicates that the input switching is prohibited, the video source displayed on the display unit is not switched. Display device.

2. a confirmation unit that displays, on the display unit, a confirmation message inquiring whether or not to switch the input when the device information of the external device that is a source of the switching request signal is not stored in the storage unit; and a registration unit that stores the switching registration information in the storage unit based on a response to the confirmation message. The display device according to claim 1 .

3. In the switching registration information, notification information indicating whether or not to display a reconfirmation message inquiring about whether or not the input switching is permitted is associated with the device information and the switching permission information, a notification unit that, when the notification information associated with the device information of the external device that is a source of the switching request signal indicates that the reconfirmation message is to be sent, causes the display unit to display the reconfirmation message. The display device according to claim 1 .

4. The display device further includes a start-up unit that starts up the display unit when the switching request signal is input while the display unit is stopped, the display control unit, when the activation unit activates the display unit, causes the display unit to display an image based on the video signal; The display device according to any one of claims 1 to 3.

5. A display unit that displays an image; a display control unit that controls the display unit; an input unit to which a video signal, a switching request signal, and device information are input from an external device; a storage unit that stores switching registration information that associates the device information with switching availability information that indicates whether input switching is possible, The display control unit When the switching permission information associated with the device information of the external device that is a source of the switching request signal indicates that the input switching is permitted, displaying an image based on the video signal from the external device on the display unit; When the switchability information associated with the device information of the external device that is the source of the switch request signal indicates that the input switching is prohibited, the video source displayed on the display unit is not switched. Display control method.

Images