JP2013081008A - Image display device and image display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and concurrently allow a user of a device to view a caption free from sharpness deterioration and provide the user an image without a caption, using a single image.SOLUTION: An image display device comprises generation means, shutter control means, and luminance control means. The generation means generates image data including a first image frame on which a caption is superimposed and a second image frame on which a caption is not superimposed. The shutter control means performs control to close the shutters of eyeglasses with shutters in accordance with the first image frame generated by the generation means, and to open the shutters of eyeglasses with shutters in accordance with the generated second image frame. The luminance control means performs control to improve the luminance of the caption.

Description

  Embodiments described herein relate generally to a video display device and a video display broadcasting method for displaying video.

In recent years, subtitle information is added to content in digital broadcasting. In a video display device that displays a video of this content, it is common to be able to switch whether or not to display subtitles of the content. On the other hand, it is required to simultaneously realize a state in which subtitles are displayed together with a content video and a state in which no subtitles are displayed. For example, such a need arises when an elderly person with weak hearing or a hearing impaired person and a healthy person view content at the same time. In order to meet such needs, for example, a technique for allowing a user to view different images depending on the presence or absence of a polarization filter in an image displayed on a polarization display device is disclosed. In addition, for a viewer who does not use glasses with shutters used for viewing stereoscopic (3D) video, an image is displayed that displays subtitles prompting the viewers to use glasses with shutters for viewing stereoscopic video. It is also possible to apply a technology for viewing.

JP 2009-009050 A JP 2010-276721 A

Conventionally, however, the clearness of a caption image has not been taken into account when realizing a state in which captions are displayed in parallel with a state in which captions are not displayed by a single video. In other words, it has been difficult for a user of the apparatus to easily and concurrently execute a subtitle that does not deteriorate in definition and provide a video without a subtitle with a single video.

Therefore, in order to solve the above-described problems, the present invention makes it easy to allow a user of the apparatus to view subtitles whose definition is not deteriorated and to provide subtitle-free images with a single video. It is an object of the present invention to provide a video display device and a video display method that can be executed as described above.

The video display apparatus according to the embodiment includes a generation unit, a shutter control unit, and a luminance control unit. The generating means generates video data including a first video frame in which captions are multiplexed and a second video frame in which captions are not multiplexed. The shutter control means controls to close the shutter of the glasses with shutters corresponding to the first video frame generated by the generation means, and to open the shutter of the glasses with shutters corresponding to the generated second video frame. The luminance control means controls to increase the luminance of the caption.

The block diagram which shows the structure of the television receiver 10 which is a broadcast receiving apparatus concerning this embodiment. The system block diagram which is provided in the signal processing control part 40, and consists of a some block which performs the opening / closing control of the shutter according to the produced | generated image | video with a closed caption. The flowchart for demonstrating the operation | movement of the opening / closing control of the shutter match | combined with the produced | generated image | video produced | generated with the subtitles performed in this embodiment. The timing chart for demonstrating the operation | movement in the shutter control mode of the opening / closing control of the shutter according to the image | video with a caption concerning this embodiment. The timing chart for demonstrating the operation | movement in the normal mode of the opening / closing control of the shutter according to the image | video with a caption concerning this embodiment. The timing chart for demonstrating the operation | movement in the modification of the shutter control mode of the opening / closing control of the shutter according to the image | video with a caption concerning this embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a television receiver 10 which is a broadcast receiving apparatus according to the present embodiment.
The television receiver 10 includes a broadcast wave processing unit 20, an external device IF unit 31, a signal processing control unit 40, an operation unit 51, a light receiving unit 52, a display 61, a speaker 62, a shutter control unit 81, and the like. . The display 61 includes a liquid crystal panel 101, a backlight 102, and the like. An antenna 99 is connected to the broadcast wave processing unit 20, and broadcast wave information received by the antenna 99 is supplied to the broadcast wave processing unit 20. The light receiving unit 52 is a remote controller (hereinafter, referred to as a remote controller).
98 and a shutter control unit 81 exchange information with the glasses with shutters 97, respectively. Conventionally used for viewing stereoscopic images (3D images) can be applied to the glasses with shutters 97.

The television receiver 10 according to the present embodiment receives a broadcast wave to which caption information is added together with video information and audio information. The caption information added to the received broadcast wave is displayed on the display 61 as a captioned video superimposed on the video based on the video information. A plurality of videos with subtitles are generated, and one of them is a video in which images with and without subtitles are arranged in a frame sequence. When displaying the video with captions, the shutter of the glasses with shutters 97 is controlled to open and close in accordance with the timing at which images with and without captions are displayed.

The broadcast wave processing unit 20 includes a tuner and a demodulator corresponding to the broadcast type. The broadcast wave processing unit 20 acquires a signal received by the antenna 99, and executes channel selection processing, demodulation processing, and the like for a specific channel related to the acquired signal. In addition, the broadcast wave processing unit 20 executes a transport data signal (hereinafter referred to as a TS signal) including program related information such as video / audio information, subtitle information, and program name obtained by executing these processes. Is output to the signal processing control unit 40. The broadcast wave processing unit 20 receives a reception signal including SI information such as ECM and EMM, and outputs a TS signal including such information.

The external device IF unit 31 is connected to an external device of the television receiver 10 through a connection unit conforming to a standard such as the HDMI (registered trademark) standard, the USB standard, or the IEEE 1394 standard, and video provided from the connected external device. A TS signal including program-related information such as audio information, caption information, and program name is acquired and output to the signal processing control unit 40. The external device IF unit 31
Connected to a recording medium such as an external HDD or a memory card of the television receiver 10 through a connection unit conforming to the HDMI standard, USB standard, IEEE 1394 standard, etc., and audio / video information, subtitle information, A TS signal including program related information such as a program name is output or input.

The operation unit 51 receives operation input information for operating the television receiver 10 and outputs the information to the signal processing control unit 40. The light receiving unit 52 receives (receives) operation input information from the remote controller 98 and outputs the received information to the signal processing control unit 40.

The signal processing control unit 40 executes various processes using each block provided in the signal processing control unit 40 itself and each block connected to the signal processing control unit 40. For example, the signal processing control unit 40 responds to the operation information from the remote controller 98 via the operation unit 51 or the light receiving unit 52.
An input of a TS signal from any one of a plurality of input sources is selected. Further, the signal processing control unit 40 descrambles based on the TS signal of the program input from the selected input source, outputs video information to the display unit 61, and outputs audio information to the speaker 62. The signal processing control unit 40 extracts a caption PES from the input TS signal, and executes a decoding process for the extracted caption PES. The decoded subtitle information is superimposed (multiplexed) on a predetermined frame generated based on the video information.

The signal processing control unit 40 according to the present embodiment communicates with the shutter control unit 81 information related to the opening / closing control of the shutter glasses 97 based on the timing at which an image with captions is output. The signal processing control unit 40 generates a subtitled video in which images with and without subtitles are arranged in a frame sequential manner according to the result of communication with the shutter control unit 81, and displays the generated video It is displayed on the machine 61. Further, the signal processing control unit 40 performs luminance adjustment control for adjusting the luminance of an image with captions in accordance with the result of communication performed with the shutter control unit 81.

The display 61 displays the video signal input from the signal processing control unit 40.
1 is a display module. The display 61 includes, for example, an LCD (Liquid Crystal Displ
A thin flat display represented by ay) can be applied. The display 61 displays the video signal input from the signal processing control unit 40 on the liquid crystal panel 101, which is a light transmission type video display panel for displaying video, and the control signal from the signal processing control unit 40. In response to this, the illumination of the backlight 102 is turned on or off. In addition, although this embodiment demonstrates the example which applied the liquid crystal display to the indicator 61, it is not limited to this, Self-luminous panels, such as an organic electroluminescent panel, may be sufficient.

The liquid crystal panel 101 is a video display panel in which a plurality of display pixels that display video signals input from the signal processing control unit 40 are arranged in a predetermined number of matrixes. The liquid crystal panel 101 displays video by sequentially rewriting the display on the screen based on the video signal input from the signal processing control unit 40 in accordance with scanning with respect to a predetermined scanning line.

The backlight 102 is a light source for illuminating the liquid crystal panel 101 from the back surface of the liquid crystal panel 101. The backlight 102 is a direct cold cathode tube, direct or side illumination LED, EL (El
It is a light source using ectro-Luminescence). In this embodiment, the backlight 102
Is an LED light source using a direct type or a side illumination type, and is turned on or off with a predetermined light amount in accordance with control information from the signal processing control unit 40.

The speaker 62 outputs the audio signal input from the signal processing control unit 40.
The shutter control unit 81 outputs a shutter control signal for controlling the opening and closing of the shutter provided in the glasses with shutter 97 based on the information input from the signal processing control unit 40. The shutter control unit 81 receives mode information indicating the shutter opening / closing control mode from the glasses with shutters 97 and transmits the received mode information to the signal processing control unit 40.

In the present embodiment, an example in which the shutter control unit 81 is configured separately from the signal processing control unit 40 will be described. However, the shutter control unit 81 may be configured integrally with the signal processing control unit 40. Further, the shutter control unit 81 may be configured to receive the mode information from the operation unit 51 or the remote controller 98 via the light receiving unit 52 instead of receiving the mode information from the glasses 97 with the shutter. In the case of this configuration, the shutter control unit 81 transmits the received mode information to the glasses with shutters 97.

The television receiver 10 is not limited to the plurality of blocks described above,
Network I having a communication processing unit that performs communication via a network such as an AN or an optical line
You may provide the block which implement | achieves F function. This block obtains a signal including video / audio information, caption information, program related information such as a program name from an information providing source such as a specific server or a recording medium connected to the network, and a TS signal based on this signal. Is output to the signal processing control unit 40. The signal processing control unit 40 can also select a TS signal input from this block as one of the input sources.

In the present embodiment, an example in which the television receiver 10 is applied as a video display device will be described. However, a personal computer, a portable mobile terminal, or the like having the same structure as that of the present embodiment may be applied. Further, the broadcast wave received by the antenna 99 may be not only television broadcast but also radio broadcast.

With such a configuration, the television receiver 10 according to the present embodiment displays on the display 61 a captioned video in which images with and without captions are arranged in a frame sequential manner. In addition, the shutter opening / closing control of the glasses with shutters 97 based on the output timing of the image with subtitles is performed, and the luminance adjustment control for adjusting the luminance of the image with subtitles is performed. Therefore, the television receiver 10 according to the present embodiment can allow a user of the apparatus to view subtitles whose definition is not deteriorated with a single video.

Next, a plurality of blocks that are provided in the signal processing control unit 40 described with reference to FIG. 1 and that execute a shutter opening / closing control in accordance with the generated video will be described with reference to FIG.

FIG. 2 is a system configuration diagram that is provided in the signal processing control unit 40 and includes a plurality of blocks that generate subtitled video and perform shutter opening / closing control in accordance with the generated video.

The signal processing control unit 40 includes a separation unit 201, a video decoder 202, a subtitle decoder 203, an audio decoder 204, a frame memory 205, a multiplexing unit 206, and a shutter control management unit 207.

Based on the TS signal input from the selected input source, the separation unit 201 outputs the video PE
S, audio PES, and subtitle PES. The separated video PES is output to the video decoder 202, the audio PES is output to the audio decoder 204, and the subtitle PES is output to the subtitle decoder 203.

The video decoder 202 decodes the input video PES and outputs the decoded video information to the frame memory 205.
The caption decoder 203 decodes the input caption PES, and outputs the decoded caption information to the multiplexing unit 206.
The audio decoder 204 decodes the input audio PES, performs predetermined processing on the decoded video information, and outputs it to the speaker 62.
The frame memory 205 converts video frame rate based on the input video information to generate video data including a plurality of video frames. The conversion of the frame rate is realized by adding an interpolation frame or an interpolation frame to the original video frame. The number of frames of video data subjected to frame rate conversion is increased to N [times] (N is an integer of 1 or more) the original number of frames. In addition, the frame memory 205 multiplexes the subtitle video input from the multiplexing unit 206 into a specific video frame of the video data subjected to frame rate conversion in accordance with control by the multiplexing unit 206. In one example, subtitle information is multiplexed on an M-th video frame (M is an integer of 1 to N) of N [times] video frames. In another example, caption information is multiplexed on all video frames of N [times] video frames.

The multiplexing unit 206 outputs the subtitle video based on the input subtitle information to the frame memory 205, and multiplexes it with a predetermined video frame of the video data subjected to frame rate conversion. Based on the information transmitted from the shutter control management unit 207, the multiplexing unit 206 determines which video frame of the video data subjected to frame rate conversion is to be multiplexed with the subtitle information.
Control for 05. Further, the multiplexing unit 206 adjusts the luminance of the subtitle information to be multiplexed on a predetermined video frame of the video data subjected to the frame rate conversion based on the information transmitted from the shutter control management unit 207. Further, the multiplexing unit 206 outputs synchronization information synchronized with the timing at which caption information is multiplexed in the frame memory 205 to the shutter control management unit 207.

The shutter control management unit 207 communicates with the shutter control unit 81. Shutter control management unit 2
07 is a frame memory 205 corresponding to the mode information transmitted from the shutter control unit 81.
Information related to the multiplexing of the caption information is transmitted to the multiplexing unit 206. For example, the shutter control management unit 207 multiplexes information for adjusting the luminance of subtitles multiplexed in a predetermined video frame of video data in the frame memory 205 according to the mode information transmitted from the shutter control unit 81. 206. The shutter control management unit 207 also performs shutter control of the glasses with shutters 97 by the shutter control unit 81 based on the synchronization information output from the multiplexing unit 206 and a video frame in which caption information in the frame memory 205 is multiplexed. Synchronize timing.

Note that the shutter control management unit 207 does not transmit information for adjusting the luminance of subtitles to be multiplexed to the multiplexing unit 206 according to the mode information transmitted from the shutter control unit 81, but from the multiplexing unit 206. A configuration may be adopted in which the luminance of the entire video frame on which the caption information is multiplexed is adjusted by controlling the light amount of the backlight 102 provided in the display device 61 based on the output synchronization information. Also, the shutter control management unit 207 transmits information for adjusting the luminance of the entire video frame on which the caption information is multiplexed to the multiplexing unit 206 or the frame memory 20.
5 may be used.

With such a configuration, the signal processing control unit 40 provided in the television receiver 10 according to the present embodiment allows the subtitled video (the subtitled image and the subtitled non-multiplexed image to be arranged in a frame sequential manner ( Video data) is displayed on the display 61. In addition, the shutter opening / closing control of the glasses with shutters 97 based on the timing at which the image with multiplexed subtitles is output is performed, and the luminance adjustment control for adjusting the luminance of the subtitles of the image with multiplexed subtitles is performed. Therefore, the television receiver 10 according to the present embodiment makes it possible for a user of the apparatus to view a subtitle whose definition is not deteriorated and to provide a video without a subtitle in parallel with a single video. Can be executed.

Next, with reference to FIG. 3, an operation of generating a captioned video and controlling the opening / closing of the shutter in accordance with the generated video will be described.
FIG. 3 is a flowchart for explaining the operation of the shutter opening / closing control in accordance with the generated video and the generated video with captions, which is executed in the present embodiment.

A mode is set for the shutter controller 81 (S301). A plurality of modes to be set are defined. One is that subtitle information is viewed unless the shuttered glasses 97 are used,
This is a “shutter use mode” in which subtitle information is not viewed when the shutter-equipped glasses 97 are used. The other is a “normal mode” in which caption information is viewed regardless of whether or not the glasses with shutters 97 are used.

When the set mode is the “shutter use mode”, the caption information is multiplexed on the Mth video frame in each frame period of the video data whose frame rate is converted to N [times] (S302). In addition, the brightness of the subtitle of the Mth video frame in which the subtitles are multiplexed is adjusted (S303), the shutter corresponding to the Mth video frame is “closed”, and the shutters corresponding to the video frames other than the Mth are “open”. Is executed (S304).

When the set mode is the “normal mode”, the caption information is multiplexed on all the video frames in each frame period of the video data whose frame rate is converted to N [times] (S305).
. In addition, the luminance of the subtitles of all the video frames is adjusted to the normal state (S306), and shutter control is performed so that the shutter is “open” in all the video frames (S307).

With such a configuration, video with captions (video data) is generated according to a plurality of modes, and shutter opening / closing control is executed in accordance with the generated video. Therefore, the television receiver 10 according to the present embodiment makes it possible for a user of the apparatus to view a subtitle whose definition is not deteriorated and to provide a video without a subtitle in parallel with a single video. Can be executed.

Next, the operation in the shutter use mode of the opening / closing control of the shutter according to the video with caption according to the present embodiment will be described with reference to FIG.
FIG. 4 is a timing chart for explaining the operation in the shutter use mode of the opening / closing control of the shutter in accordance with the captioned video according to the present embodiment.
The timing chart shown in FIG. 4 is an example in which subtitle information is multiplexed on the third video frame in each frame period with respect to video data in which the frame rate is converted to 3 [times] in each frame period. In this example, the caption information “A” is multiplexed with the video frame “F12” of frame 1 and the video frame “F22” of frame 2. Other video frames (video frames “F10” and “F11” of frame 1, video frame “F20” of frame 2,
"F21") is not multiplexed with caption information.

In the “shutter use mode”, the video frames “F12”, “
In “F22”, adjustment is made so that the luminance of the subtitle increases (UPs). For example, the multiplexing unit 206 causes the frame memory 205 to multiplex the subtitle information in which the setting value for determining the brightness is adjusted so that the luminance of the subtitles to be multiplexed is increased. This is the glasses with shutter 9
7 is not used, the brightness of the caption information displayed in the video frames “F12” and “F22” is reduced as compared with the case where the caption information is multiplexed in all the video frames (about 1).
This is for avoiding the above situation. That is, as shown in FIG. 4, the afterimages of the video frames “F12” and “F22” are adjusted to increase the luminance of the subtitles, and the other video frames “F10”, “F11”, and “F20” are displayed. , “F21” is affected, and the subtitle information is easily visually recognized, so that the user of the television receiver 10 can view the subtitle that does not deteriorate the definition.

In the “shutter use mode”, the video frame “F12” in which the caption information is multiplexed.
”,“ F22 ”, the shutter is“ closed ”, and other video frames“ F10 ”,“ F11 ”,“ F ”
In "20" and "F21", shutter opening / closing control is performed so that the shutter is "open".
With this control, when the user views the video through the glasses with shutters 97, the video of the video frames “F10”, “F11”, “F20”, “F21” is visually recognized, and the video frames “F12”, “F22” are viewed. The subtitle information multiplexed on “is not visible. Accordingly, it is possible to provide a video without captions to a user who views the video through the glasses with shutters 97.

As described above, the shutter opening / closing control in the “shutter use mode” is executed, so that the television receiver 10 according to the present embodiment has a sharpness to the user of the apparatus by a single image. It is possible to execute in parallel the viewing of subtitles that do not deteriorate and the provision of video without subtitles.

Next, the operation in the normal mode of the shutter opening / closing control in accordance with the captioned video according to the present embodiment will be described with reference to FIG.
FIG. 5 is a timing chart for explaining the operation in the normal mode of the opening / closing control of the shutter in accordance with the captioned video according to the present embodiment.
The timing chart shown in FIG. 5 is an example in which caption information is multiplexed with respect to all video frames in each frame period for video data in which each frame period is frame rate converted to 3 [times]. In this example, each video frame “F10”, “F11”, “
Subtitle information “A” is multiplexed with F12 and frame 2 video frames “F20”, “F21”, and “F22”.

In the “normal mode”, the luminance of the caption is adjusted to the normal state for all the video frames in which the caption information is multiplexed. That is, as shown in FIG. 5, the luminance of the caption information with respect to the video information of each video frame is stably adjusted by adjusting the luminance of the caption to the normal state.

In the “normal mode”, shutter opening / closing control is performed so that the shutter is “open” in all the video frames in which the caption information is multiplexed. By this control, it is possible to provide the same video when the user views the video through the shuttered glasses 97 and when the user views the video without passing through the shuttered glasses 97.

Thus, by performing the shutter opening / closing control in the “normal mode”, the television receiver 10 according to the present embodiment can use the apparatus user regardless of whether or not the glasses 97 with the shutter are used. Can be viewed.

(Modification)
Next, the operation of a modified example of the shutter use mode of the shutter opening / closing control in accordance with the captioned video according to the present embodiment will be described with reference to FIG.
FIG. 6 is a timing chart for explaining the operation in the modified example of the shutter use mode of the shutter opening / closing control in accordance with the captioned video according to the present embodiment.
In the timing chart shown in FIG. 6, as in FIG. 4, subtitle information is multiplexed on the third video frame in each frame period for video data in which each frame period is frame rate converted to 3 [times]. It is an example. In this example, the caption information “A” is multiplexed with the video frame “F12” of frame 1 and the video frame “F22” of frame 2. Subtitle information is not multiplexed in other video frames (video frames “F10” and “F11” in frame 1 and video frames “F20” and “F21” in frame 2).

“Shutter Usage Mode” described with reference to FIG. 4 also in “Modification of Shutter Usage Mode”
In the same manner as described above, the brightness of the caption is adjusted (up) in the video frames “F12” and “F22” in which the caption information is multiplexed. For example, subtitle information in which the multiplexing unit 206 has adjusted a setting value for determining brightness so that the luminance of subtitles to be multiplexed is increased is stored in the frame memory 2.
At 05, it is multiplexed into a video frame. This is because the brightness of the caption information displayed in the video frames “F12” and “F22” is reduced as compared with the case where the caption information is multiplexed in all the video frames in a state where the shuttered glasses 97 are not used. This is to avoid (about 1/3). Also, a video frame “F12” in which caption information is multiplexed.
For example, a black image is used as the video information of “F22”.

That is, as shown in FIG. 6, the afterimages of the video frames “F12” and “F22” are changed to other video frames “ F10 ”,“ F11 ”,“ F20 ”,“ F21 ”are more affected, and the caption information is more easily visible, and allows the user of the television receiver 10 to view captions that do not deteriorate in sharpness. It becomes possible.

Also, in the “modified example of the shutter use mode”, the shutter is “closed” in the video frames “F12” and “F22” in which the caption information is multiplexed, as in the “shutter use mode” described with reference to FIG. In other video frames “F10”, “F11”, “F20”, and “F21”, shutter opening / closing control is performed so that the shutter is “open”. By this control, when the user views the video through the glasses with shutters 97, the video frames “F10”, “
The images of “F11”, “F20”, “F21” are visually recognized, and the video frames “F12”, “F2”
The subtitle information multiplexed in “2” is not visually recognized. Accordingly, it is possible to provide a video without captions to a user who views the video through the glasses with shutters 97.

Furthermore, in the “modified example of the shutter use mode”, the luminance of the video increases for the video frames “F10”, “F11”, “F20”, “F21” in which the caption information is not multiplexed (UP
To be adjusted). For example, in order to increase the brightness of the video, the frame memory 205
Can be realized by a configuration that adjusts a setting value that determines the brightness of the entire video frame, and a configuration that the shutter control management unit 207 adjusts so that the amount of light of the backlight 102 is increased. This is a video frame in which subtitle information is multiplexed with video information of a black image.
Since “F12” and “F22” are included in the video data, in each video frame period,
The brightness of the video information is reduced compared to the case where there is video in all video frames (about 2/3).
This is for avoiding the situation.

That is, by making the video frame on which the subtitle information is multiplexed a black screen video, a user (a healthy person) who views the video without subtitles via the shuttered glasses 97 and the subtitles without using the shuttered glasses 97. Thus, it is possible to provide a video with no difference in brightness to a user (such as an elderly person with weak hearing or a hearing-impaired person) who views a certain video. Also, in the video frame in which caption information is multiplexed, the brightness of the caption is increased with respect to the black screen image, and in the video frame in which caption information is not multiplexed, the brightness of the image is increased. Since the difference from the luminance of the video in the “mode” is reduced, it is possible to suppress the occurrence of the video difference depending on the mode.

As described above, the shutter opening / closing control in the “modified example of the shutter use mode” is executed, so that the television receiver 10 according to the present embodiment provides a single image to the user of the apparatus. It is possible to execute in parallel the viewing of subtitles that do not deteriorate in sharpness and the provision of video without subtitles.

As described above, according to the present embodiment, the first state in which the user of the apparatus can view subtitles regardless of whether or not the shuttered glasses 97 are used, and the shuttered glasses. When 97 is not used, the subtitle information is viewed, and when the shuttered glasses 97 are used, the second state in which the subtitle information is not viewed can be realized. According to the second state, a user who does not use the glasses with shutters 97 can view subtitles whose sharpness does not deteriorate, and a user who uses the glasses with shutters 97 has no subtitles. Video can be provided. Therefore, according to the television receiver 10 according to the present embodiment, it is possible to allow a user of the apparatus to view subtitles whose definition is not deteriorated and to provide a video without subtitles with a single video. Can easily be executed in parallel.

The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the scope of the present invention. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some constituent elements may be deleted from all the constituent elements shown in the embodiments, and the constituent elements according to the different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 ... Television receiver, 20 ... Broadcast wave process part, 31 ... External apparatus IF part, 40 ... Signal processing control part, 51 ... Operation part, 52 ... Light-receiving part, 61 ... Display, 62 ... Speaker, 81 ... Shutter Control unit 97 ... Glasses with shutter, 98 ... Remote control, 99 ... Antenna, 201 ... Separation unit, 202 ... Video decoder, 203 ... Subtitle decoder, 204 ... Audio decoder, 205 ... Frame memory, 206 ... Multiplexing unit, 207 ... Shutter Control management department.

Claims (7)

Generating means for generating video data including a first video frame in which subtitles are multiplexed and a second video frame in which the subtitles are not multiplexed;
Shutter control means for controlling to close the shutter of the glasses with shutters corresponding to the first video frame generated by the generation means, and to open the shutters of the glasses with shutters corresponding to the generated second video frame;
Brightness control means for controlling the brightness of the subtitles;
A video display device comprising: The generating means generates video data obtained by converting a frame rate to N times an integer of 1 or more based on an input video frame, and an Mth integer which is an integer smaller than the N among the generated video data. The video display device according to claim 1, wherein a video frame is the first video frame, and a video frame other than the Mth video frame is the second video frame. The video display device according to claim 1, wherein the luminance control unit increases the luminance of the subtitles and does not increase the luminance other than the subtitles with respect to the first video frame. 4. The video display device according to claim 1, wherein the generation unit uses a background video of the subtitle of the first video frame as a black image. 5. The video display device according to claim 4, wherein the luminance control unit performs control to increase a luminance of the second video frame. The video display device according to claim 1, wherein the brightness control unit increases the brightness of the entire image with respect to the first video frame. Generating video data including a first video frame in which subtitles are multiplexed and a second video frame in which the subtitles are not multiplexed;
Close the shutter of the glasses with shutters corresponding to the generated first video frame, and control to open the shutters of the glasses with shutters corresponding to the generated second video frame,
Control to increase the brightness of the subtitles;
Video display method.

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