JP7787706B2 - display device - Google Patents

Description

The present invention relates to a display device.

Display devices with an OSD (On Screen Display) function that displays a setting menu and other items superimposed on the display screen have been disclosed (see, for example, Patent Document 1).

The video processing device of this display device includes an acquisition unit and a frame rate setting unit. The acquisition unit acquires multiple video signals, including a first video signal with a variable frame interval and a second video signal with a fixed frame interval. The frame rate setting unit sets the frame rate, when images represented by the multiple video signals are displayed on the same screen, to a frame rate corresponding to one of the frame intervals represented by the multiple video signals with a fixed frame rate interval, or to a frame rate obtained by multiplying that frame rate by a constant.

Japanese Patent Application Laid-Open No. 2019-186767

When displaying input video with a superimposed image at the frame rate of the superimposed image, if the frame rate of the superimposed image is higher than the frame rate of the input video, stuttering and tearing may occur in the input video, causing the display screen to become distorted. Furthermore, when displaying input video with a superimposed image at the frame rate of the input video, if the frame rate of the input video is higher than the frame rate of the superimposed image, frames may be dropped from the superimposed image.

The main objective of this disclosure is to provide a display device and display control method that can suppress distortion in the display of input video and superimposed images.

A display device according to one embodiment includes a display unit that displays video, and a superimposition unit that superimposes a superimposed image including animation on input video and displays the superimposed image on the display unit. When the input video has a variable frame rate, the superimposition unit superimposes the superimposed image, in which the animation has been stopped, on the input video and displays the superimposed image on the display unit.

FIG. 1 is a block diagram of a display device according to an embodiment. FIG. 2 shows an example of a display screen in which a superimposed image is superimposed on an input video on the display unit of the display device. FIG. 3A is a first explanatory diagram of the animation operation of the cursor bar. FIG. 3B is a second explanatory diagram of the animation operation of the cursor bar. FIG. 3C is a third explanatory diagram of the animation operation of the cursor bar. FIG. 3D is a fourth explanatory diagram of the animation operation of the cursor bar. FIG. 4A is a first explanatory diagram of the animation behavior of the menu background. FIG. 4B is a second explanatory diagram of the animation behavior of the menu background. FIG. 4C is a third explanatory diagram of the animation operation of the menu background. FIG. 4D is a first explanatory diagram of the animation behavior of the menu background. FIG. 5A is a first explanatory diagram of another animation operation of the menu background. FIG. 5B is a second illustration of another animation operation of the menu background. FIG. 5C is a third explanatory diagram of another animation operation of the menu background. FIG. 5D is a first illustration of another animation behavior of the menu background. FIG. 6 is a flowchart showing an example of the operation of the display device. FIG. 7 is an explanatory diagram showing the relationship between the frame rates of the input video and the superimposed image and the refresh rate of the display unit. FIG. 8 is a flowchart of an example of the operation of the display device according to the first modification. FIG. 9 is a flowchart of an example of the operation of the display device according to the second modification.

The display device 1 of this embodiment will be described with reference to Figures 1 to 7.

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, an organic EL television (EL: Electro Luminescence), or the like. The display device 1 displays, as input video P1 (see Figure 2), a television program broadcast by television broadcasting, video distributed by VOD (Video On Demand), external video input from an external device 2, or the like.

Here, the input video P1 includes video with a variable frame rate (VFR) and video with a constant frame rate (CFR). The display device 1 has a variable refresh rate (VRR) function to accommodate the variable frame rate input video P1. The VRR function enables the display device 1 to drive the display unit 11 at a refresh rate synchronized with the frame rate of the variable frame rate input video P1. This makes it possible to suppress stuttering and tearing when displaying the input video P1.

The display device 1 also has an OSD (On Screen Display) function. The OSD function is a function that displays a menu screen, setting screen, etc. superimposed on a portion of the displayed input video P1. In the following description, in the OSD function, an image such as a menu screen or setting screen that is superimposed on the input video P1 is referred to as a superimposed image P2 (see Figure 2). Note that in the OSD function, the superimposed image P2 may be displayed alongside the input video P1 in the display area of the display unit 11.

In the display device 1 of this embodiment, the superimposed image P2 includes animation. Animation here refers to a moving image in which multiple still images are displayed consecutively. In this embodiment, the animation is a moving image with a constant frame rate (CFR).

As described above, the animation of superimposed image P2 has a fixed frame rate. When this superimposed image P2 is superimposed on input video P1, which has a variable frame rate, the frame rates of the input video P1 and the animation of superimposed image P2 will differ. If the display unit 11 is driven at the frame rate of either the input video P1 or the animation of superimposed image P2, there is a risk that the display of the other will be distorted. Therefore, in the display device 1 of this embodiment, when the input video P1 has a variable frame rate, the animation of superimposed image P2 is stopped.

This prevents distortion of the display of the input video P1 and superimposed image P2.

The display device 1 of this embodiment is described in detail below.

As shown in FIG. 1, the display device 1 of this embodiment includes a display unit 11, an external input terminal 12, and a processing device 13.

The display unit 11 is a display panel such as a liquid crystal panel. The display unit 11 displays video. Specifically, the display unit 11 displays, as input video P1 (see Figure 2), a television program broadcast by television broadcasting, video distributed by VOD, external video input from external device 2, etc.

The external input terminal 12 is an interface for connecting to an external device 2. In this embodiment, the external input terminal 12 is an HDMI input terminal (HDMI: High-Definition Multimedia Interface, registered trademark). The external input terminal 12 can be connected to the external device 2 via an HDMI cable.

External device 2 is a video device that outputs a video signal, such as a recorder, player, or game console. Recorders include BD recorders (BD: Blu-ray Disc, registered trademark), DVD recorders (DVD: Digital Versatile Disc), and HDD recorders (HDD: Hard Disk Drive), and have recording and playback functions. Players include BD players and DVD players, and have playback functions. External device 2 has an HDMI output terminal and can output a video signal to display device 1 via an HDMI cable.

The external device 2 is connected to the external input terminal 12 of the display device 1 via an HDMI cable. The external device 2 outputs video to the display device 1 via the HDMI cable. In this embodiment, the external device 2 outputs video at a variable frame rate. The display device 1 displays the external video from the external device 2 as input video P1 on the display unit 11.

The display device 1 also has a memory that stores EDID (Extended Display Identification Data). The EDID includes data on the refresh rate range of the variable refresh rate (VRR). The external device 2 acquires the EDID refresh rate range data stored in the memory of the display device 1. The external device 2 then sets the variable frame rate range of the video to be output to the display device 1 so that it falls within the refresh rate range. Therefore, the minimum value of the variable frame rate of the input video P1 is greater than the minimum value of the refresh rate range.

The processing device 13 includes a display control unit 131, a determination unit 132, a generation unit 133, and a superimposition unit 134. The processing device 13 is configured, for example, by a microcomputer having a processor and memory. In other words, the processing device 13 is realized as a computer system having a processor and memory. The processor executes appropriate programs to function as the display control unit 131, the determination unit 132, the generation unit 133, and the superimposition unit 134. The programs may be pre-recorded in memory, or may be provided via a telecommunications line such as the Internet, or recorded on a non-transitory recording medium such as a memory card. The processor of the computer system is configured with one or more electronic circuits, including a semiconductor integrated circuit (IC) or a large-scale integrated circuit (LSI). The multiple electronic circuits may be integrated into a single chip or distributed across multiple chips. The multiple chips may be integrated into a single device or distributed across multiple devices. For example, the display control unit 131, the determination unit 132, the generation unit 133, and the superimposition unit 134 may be implemented by separate microcomputers, or the display control unit 131, the determination unit 132, the generation unit 133, and the superimposition unit 134 may be implemented by multiple microcomputers.

The display control unit 131 controls the display unit 11. By controlling the display unit 11, the display control unit 131 causes the display unit 11 to display the input video P1. For example, the display control unit 131 causes the display unit 11 to display an external video from an external device 2 input to the external input terminal 12 as the input video P1. Furthermore, if the input video P1 has a variable frame rate, the display control unit 131 drives the display unit 11 at a refresh rate synchronized with the frame rate of the input video P1 using the VRR function.

The determination unit 132 determines the frame rate of the input video P1 displayed on the display unit 11. Specifically, the determination unit 132 acquires frame rate information for the input video P1 and determines whether the frame rate of the input video P1 is a variable frame rate (VFR) or a constant frame rate (CFR).

The generation unit 133 uses the OSD function to generate a superimposed image P2 (see Figure 2) to be superimposed on the input video P1. The superimposed image P2 is an image such as a menu screen or settings screen that is superimposed on a partial area of the video. For example, when a user uses a remote control or the like to perform an operation to display the superimposed image P2 (for example, an operation to display a menu screen), the generation unit 133 generates the superimposed image P2 in accordance with the operation.

The superimposing unit 134 superimposes the superimposed image P2 generated by the generating unit 133 onto the input video P1 and displays it on the display unit 11.

Figure 2 shows an example of an input video P1 with a superimposed image P2 superimposed on it. In the example shown in Figure 2, the superimposed image P2 is a menu screen for checking and adjusting the settings of the display device 1. Items on the menu screen include viewing settings, video adjustment, sound quality adjustment, and timer. In addition, a cursor bar P22 indicating the currently selected item is displayed on the superimposed image P2.

The superimposed image P2 includes animation. Animation is a moving image in which multiple still images are displayed consecutively, and is displayed at a constant frame rate (CFR). Specifically, the animation includes multiple animation parts P20. In the example shown in FIG. 2, the superimposed image P2 includes a gear icon P21, a cursor bar P22, and a menu background P23 as the multiple animation parts P20.

The gear icon P21 is an illustration of a gear and is displayed in the viewing settings section. The gear icon P21 is an animation that moves as if it is slowly rotating. The gear icon P21 is played repeatedly when the cursor bar P22 is located on the viewing settings section. In other words, the gear icon P21 continues to move as if it is slowly rotating when the cursor bar P22 is located on the viewing settings section.

The cursor bar P22 indicates the focused item on the menu screen and is displayed in a color different from the background. When the user moves the cursor using the remote control, the cursor bar P22 is animated to move between items on the menu screen in response to that operation. For example, as shown in Figures 3A to 3D, when the cursor bar P22 on the viewing settings item is moved downward to the video adjustment item, the cursor bar P22 moves little by little from the viewing settings item to the video adjustment item.

The menu background P23 is the background of the menu screen. The menu background P23 is an animation that gradually appears when the user uses the remote control to display the menu screen. For example, as shown in Figures 4A to 4D, when an operation to display the menu screen is performed, the menu background P23 moves from the right edge of the screen to the left. As another example, as shown in Figures 5A to 5D, when an operation to display the menu screen is performed, the color of the menu background P23 gradually becomes darker.

Furthermore, in this embodiment, when the determination unit 132 determines that the input video P1 has a variable frame rate, the generation unit 133 generates a superimposed image P2 in which the animation is stopped. In this embodiment, stopping the animation means displaying a still image of only one frame out of multiple frames. In this embodiment, when the animation is stopped, a still image of the final frame out of multiple frames is displayed.

When the determination unit 132 determines that the input video P1 is a variable frame, the superimposition unit 134 superimposes a superimposed image P2, in which the animation has stopped, on the input video P1 and displays it on the display unit 11. For example, when the cursor bar P22 is moved from the viewing settings item to the video adjustment item while the animation is stopped, a still image (see FIG. 3D) in which the cursor bar P22 is in the video adjustment position is displayed. That is, the still image (see FIG. 3A) in which the cursor bar P22 is in the viewing settings position is switched to the still image (see FIG. 3D) in which the cursor bar P22 is in the video adjustment position in one frame. Furthermore, when a menu screen is displayed, the state in which the menu screen is not displayed (see FIGS. 4A and 5A) is switched to the still image (see FIGS. 4D and 5D) of the menu screen in which the menu background P23 has been displayed in one frame.

In this way, the generation unit 133 of this embodiment determines whether to stop the animation of the superimposed image P2 to be generated depending on whether the input video P1 is a variable frame rate (VFR) or a constant frame rate (CFR). If the input video P1 is a variable frame rate, the generation unit 133 generates a superimposed image P2 with stopped animation. Therefore, in this case, the display unit 11 displays the input video P1 superimposed with the superimposed image P2 with stopped animation. Note that if the generation unit 133 has not generated the superimposed image P2, the superimposition unit 134 does not perform the superimposition process of the superimposed image P2, and the input video P1 is displayed as is on the display unit 11.

Next, an example of the operation of the display device 1 of this embodiment will be described with reference to FIG. 6. Here, we will explain the superimposition process of superimposing the superimposed image P2 on the input video P1.

First, the determination unit 132 determines whether the input video P1 has a variable frame rate (S1).

If the determination unit 132 determines that the input video P1 is a variable frame (S1: Yes), the generation unit 133 generates a superimposed image P2 in which the animation is stopped (S2). On the other hand, if the determination unit 132 determines that the input video P1 is a fixed frame (S1: No), the generation unit 133 generates a superimposed image P2 in which the animation is running (S3).

Then, the superimposing unit 134 superimposes the superimposed image P2 generated by the generating unit 133 onto the input video P1 and displays it on the display unit 11 (S4).

In this way, in the display device 1 of this embodiment, when the input video P1 has a variable frame, the display unit 11 displays the input video P1 superimposed with the superimposed image P2, in which the animation is stopped. Figure 7 shows the relationship between the frame rates of the input video P1 and the superimposed image P2 and the refresh rate of the display unit 11. In Figure 7, the horizontal axis represents time.

As shown in Figure 7, input video P1 has a variable frame rate, so its frame length changes. In the example shown in Figure 7, the frame length of input video P1 from frames 1 to 3 is shorter than the frame length of frames 4 to 6. In other words, the frame rate of input video P1 changes to become lower between frames 3 and 4.

On the other hand, since the animation is stopped, the superimposed image P2 displays the same still image (frame 1) for a fixed frame length. In the example shown in Figure 7, the frame length of the superimposed image P2 is longer than the frame length of frames 1 to 3 of the input video P1, but shorter than the frame length of frames 4 to 6 of the input video P1. In other words, the frame rate of the superimposed image P2 is lower than that of the input video P1 between frames 1 and 3 of the input video P1, and is higher than that of the input video P1 between frames 4 and 6 of the input video P1.

The display unit 11 operates at a refresh rate synchronized with the frame rate of the input video P1. This makes it possible to suppress stuttering and tearing of the input video P1 displayed on the display unit 11. Furthermore, the frame rate of the superimposed image P2 displayed on the display unit 11 is converted to the frame rate of the input video P1, but because the animation of the superimposed image P2 is stopped, the impact of changes in frame rate is small. For example, even if a frame is dropped in the superimposed image P2, the appearance is not affected because the animation is stopped. This makes it possible to suppress display disruptions of the input video P1 and superimposed image P2 in the display images displayed on the display unit 11.

In this embodiment, the input video P1 is an external video from the external device 2, but the input video P1 is not limited to an external video and may be other video (such as a television program or distributed video).

(Modification)
Next, a modification of the display device 1 will be described.

(First Modification)
As described above, the display device 1 has a memory that stores EDID including data on the refresh rate range of the variable refresh rate. The external device 2 outputs video, the range of which is set so that the variable frame rate falls within the refresh rate range, to the display device 1. Therefore, the minimum value of the variable frame rate of the input video P1 is greater than the minimum value of the refresh rate range.

In addition, the animation of superimposed image P2 has a fixed frame rate, which is a predetermined value.

As a comparative example, let's assume that the frame rate of the animation of superimposed image P2 is synchronized with the variable frame rate of input video P1 and displayed on the display unit 11. In this comparative example, if the frame rate of the animation of superimposed image P2 is higher than the frame rate of input video P1, there is a possibility that frames will be dropped from the animation of superimposed image P2. On the other hand, if the frame rate of the animation of superimposed image P2 is lower than the frame rate of input video P1, no frames will be dropped from the animation of superimposed image P2.

In this modified example, the determination unit 132 therefore performs a second determination process in addition to a first determination process for determining whether the input video P1 has a variable frame rate. The second determination process is a process for determining whether the minimum value of the variable frame rate of the input video P1 is equal to or greater than the frame rate of the animation of the superimposed image P2. The determination unit 132 obtains the minimum value of the variable frame rate of the input video P1 from the frame rate information of the input video P1. Note that if the input video P1 is an external video from an external device 2 connected via an HDMI cable, the determination unit 132 may regard the minimum value of the refresh rate range included in the EDID as the minimum value of the variable frame rate of the input video P1. Hereinafter, the minimum value of the variable frame rate of the input video P1 will also be referred to as the minimum frame rate.

In the second determination process, the determination unit 132 compares the minimum frame rate of the input video P1 (the minimum value of the refresh rate range) with the frame rate of the animation of the superimposed image P2. The determination unit 132 then determines whether the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2.

Note that the determination unit 132 performs the second determination process only if it determines in the first determination process that the frame rate of the input video P1 is a variable frame rate.

When the determination unit 132 determines in the first determination process that the input video P1 has a variable frame rate and determines in the second determination process that the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2, the generation unit 133 generates a superimposed image P2 in which the animation is stopped.

Next, an example of the operation of the display device 1 of this modified example will be described with reference to Figure 8.

First, the determination unit 132 determines whether the input video P1 has a variable frame rate (S11).

If the determination unit 132 determines that the input video P1 has a variable frame rate (S11: Yes), it determines whether the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2 (S12).

If the determination unit 132 determines that the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2 (S12: Yes), the generation unit 133 generates a superimposed image P2 in which the animation is stopped (S13). On the other hand, if the determination unit 132 determines that the minimum frame rate of the input video P1 is higher than the frame rate of the animation of the superimposed image P2 (S12: No), the generation unit 133 generates a superimposed image P2 in which the animation is running (S14).

Furthermore, if the determination unit 132 determines that the input video P1 is a fixed frame (S11: No), the generation unit 133 generates a superimposed image P2 with animation running (S14).

Then, the superimposing unit 134 superimposes the superimposed image P2 generated by the generating unit 133 onto the input video P1 and displays it on the display unit 11 (S15).

In this way, in the display device 1 of this modified example, if the input video P1 has a variable frame rate and the minimum value of the variable frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2, the display unit 11 displays the input video P1 superimposed with the superimposed image P2, in which the animation has stopped. This makes it possible to prevent the display of the input video P1 and the superimposed image P2 from becoming distorted in the display image displayed on the display unit 11.

Furthermore, in the display device 1, if the input video P1 has a variable frame rate and the minimum value of the variable frame rate of the input video P1 is higher than the frame rate of the animation of the superimposed image P2, the display unit 11 displays the input video P1 superimposed with the superimposed image P2 in which the animation is running. If the frame rate of the animation of the superimposed image P2 is higher than the frame rate of the input video P1, no frame drops occur in the animation of the superimposed image P2. Therefore, it is possible to prevent the display of the input video P1 and the superimposed image P2 from becoming distorted in the display image displayed on the display unit 11.

(Second Modification)
As described above, the superimposed image P2 includes a plurality of animation parts P20. In the example shown in Fig. 2, the superimposed image P2 has a gear icon P21, a cursor bar P22, and a menu background P23 as the plurality of animation parts P20.

In this modified example, when the determination unit 132 determines that the input video P1 is a variable frame, the generation unit 133 generates a superimposed image P2 in which at least one of the multiple animation parts P20 is stopped.

As explained in the first variant, if the frame rate of the animation of the superimposed image P2 is lower than the frame rate of the input video P1, there is a possibility that frames will be missing from the animation of the superimposed image P2. In this case, the repeatedly generated animation part P20 continues to move, making it easier for the user to notice the missing frames.

The generation unit 133 therefore stops the animation part P20 that is repeatedly generated among the multiple animation parts P20. In the example shown in FIG. 2, the gear icon P21 is an animation part P20 that is repeatedly played so as to rotate slowly. Therefore, when the determination unit 132 determines that the input video P1 is a variable frame, the generation unit 133 generates a superimposed image P2 in which the animation of the gear icon P21 among the multiple animation parts P20 is stopped.

The animation part P20 at which the animation is stopped is not limited to the animation part P20 that is repeatedly played, and other animation parts P20 may be stopped. The generation unit 133 may stop an animation part P20 from among multiple animation parts P20 that is least likely to reduce usability. As shown in Figures 4A to 4D and 5A to 5D, the menu background P23 is an animation part P20 used to create the appearance of a menu screen. Therefore, even if the animation of the menu background P23 is stopped, usability is less likely to decrease and the negative effects of stopping the animation are minimal. On the other hand, as shown in Figures 3A to 3D, the cursor bar P22 is an animation part P20 used to make it easier for the user to recognize the direction in which the cursor bar P22 is moving. Therefore, stopping the animation of the cursor bar P22 may reduce usability.

Therefore, when the determination unit 132 determines that the input video P1 is a variable frame, the generation unit 133 stops the animation of the gear icon P21 and menu background P23 and generates a superimposed image P2 in which the animation of the cursor bar P22 is running.

The superimposing unit 134 superimposes the superimposed image P2 generated by the generating unit 133 onto the input video P1 and displays it on the display unit 11. Therefore, if the determining unit 132 determines that the input video P1 is a variable frame, the superimposing unit 134 superimposes the superimposed image P2, in which at least one of the multiple animation parts P20 is stopped, onto the input video P1 and displays it on the display unit 11.

Furthermore, in this modified example, as in the first modified example, the determination unit 132 performs a second determination process to determine whether the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2. If the determination unit 132 determines in the first determination process that the input video P1 has a variable frame rate and determines in the second determination process that the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2, the generation unit 133 generates a superimposed image P2 in which at least one of the multiple animation parts P20 is stopped.

Next, an example of the operation of the display device 1 of this modified example will be described with reference to Figure 9.

First, the determination unit 132 determines whether the input video P1 has a variable frame rate (S21).

If the determination unit 132 determines that the input video P1 has a variable frame rate (S21: Yes), it determines whether the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2 (S22).

If the determination unit 132 determines that the minimum frame rate of the input video P1 is lower than the frame rate of the animation of the superimposed image P2 (S22: Yes), the generation unit 133 generates a superimposed image P2 in which some of the multiple animation parts P20 are stopped (S23). Some animation parts P20 are, for example, animation parts P20 that are played repeatedly or animation parts P20 whose usability is not likely to decrease even if stopped. On the other hand, if the determination unit 132 determines that the minimum frame rate of the input video P1 is higher than the frame rate of the animation of the superimposed image P2 (S22: No), the generation unit 133 generates a superimposed image P2 in which all animation parts P20 are operating (S24).

Furthermore, if the determination unit 132 determines that the input video P1 is a fixed frame (S21: No), the generation unit 133 generates a superimposed image P2 in which all animation parts P20 are activated (S24).

Then, the superimposing unit 134 superimposes the superimposed image P2 generated by the generating unit 133 onto the input video P1 and displays it on the display unit 11 (S25).

In this way, the display device 1 of this modified example displays an input video P1 in which only some of the multiple animation parts P20 are stopped and a superimposed image P2 in which the remaining animation parts P20 are moved is superimposed. This allows animation parts P20 that the user is likely to notice as missing frames to be stopped, thereby preventing disruptions to the display of the input video P1 and superimposed image P2. Furthermore, animation parts P20 that may reduce usability if stopped can be moved without being stopped, thereby preventing a reduction in usability and improving convenience.

1 Display device 11 Display unit 134 Superimposition unit P1 Input video P2 Superimposition image P20 Animation parts

Claims (4)

a display unit that displays the input video;
a determination unit that acquires frame rate information of the input video and determines whether the frame rate of the input video is a variable frame rate or a fixed frame rate;
a superimposing unit that superimposes a superimposed image including an animation on the input video and displays the superimposed image on the display unit,
when the determination unit determines that the input video has the variable frame rate, the superimposing unit superimposes the superimposed image, in which the animation is stopped, on the input video and displays the superimposed image on the display unit ;
When the input video includes a first input video having a relatively high frame rate and a second input video having a relatively low frame rate, the frame rate of the superimposed image is lower than that of the first input video during the first input video, and is higher than that of the second input video during the second input video.
Display device. the animation of the superimposed image is at a fixed frame rate;
when the input video has the variable frame rate and the lowest value of the variable frame rate of the input video is lower than the fixed frame rate of the animation, the superimposing unit superimposes the superimposed image, in which the animation is stopped, on the input video and displays the superimposed image on the display unit.
The display device according to claim 1 . the animation includes a plurality of animation parts;
when the input video has the variable frame rate, the superimposing unit superimposes the superimposed image, in which at least one of the plurality of animation parts is stopped, on the input video and displays the superimposed image on the display unit.
The display device according to claim 1 . The at least one animation part is an animation part that is repeatedly played.
The display device according to claim 3 .