JP2008301150A - Image display apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display apparatus for preventing light sensitive fluctuation by adjusting the luminance of back-light in a certain scene (image) which may result in light sensitive fluctuation without conducting any process onto the image signal. <P>SOLUTION: The image display apparatus is provided with a detecting means for detecting light sensitive fluctuation information by previously adding the light sensitive fluctuation information on a scene (image) inducing light sensitive fluctuation to the television broadcast signal and DVD/VTR software image signals, a display control means for outputting a dimming control signal on the basis of the detection signal detected by the detecting means, and a dimming means for dimming the back-light based on the dimming control signal supplied from the display control means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video display device that prevents a viewer from inducing a photosensitive hypersensitivity attack, and in particular by reducing the brightness of a backlight in a scene (image) that may induce a photosensitive hypersensitivity attack. The present invention relates to a video display device to prevent.

  The effects of photosensitivity seizures on viewers are advocated by video effects such as flash in images such as anime, etc., and the risk of photosensitivity seizures arising from programs if flashing less than once in 1/3 second Has been studied, such as about 97% reduction.

  In addition, in order to deal with viewers' photosensitivity seizures (for example, tencanic seizures and abnormal seizures), guidelines have been disclosed by the broadcasting industry to refrain from video effects that may induce photosensitivity seizures. Is in the situation.

  Furthermore, as disclosed in Patent Document 1, the conventional image display apparatus determines that video information may induce a photosensitivity seizure, and the determination circuit induces the photosensitivity seizure. When it is determined that the video information has a fear, display control means is provided for controlling the display of the image so that the stimulus by the image viewed by the viewer is reduced.

  Examples of video information that the determination circuit determines that there is a possibility of inducing a photosensitive seizure include flicker frequency, color, brightness, regular pattern, shaking, rotation, and blurring.

  In addition, the display control means, based on the video information such as flicker frequency, color, brightness, regular pattern, shake, rotation, shake, etc. determined by the determination circuit, flicker frequency, color, brightness, regular pattern, shake, In order to prevent image information such as rotation and blurring from inducing a photosensitivity seizure, the image information is processed and corrected to display an image.

JP 2006-246138 A (refer to claims, FIG. 1)

  The image display device described in Patent Document 1 needs to change or correct brightness, contrast, and the like by signal processing on an image signal that may induce photosensitivity seizures. There is a problem that time and processing scale increase.

  Further, since the video effect intended by the program producer is changed by performing the signal processing, there is a possibility that the copyright may be violated.

  The present invention has been made to solve such a problem, and its purpose is to perform backlighting on a scene (image) that may cause a photosensitivity attack without performing any signal processing on the image signal. It is an object of the present invention to provide a liquid crystal display device that can prevent light-sensitive seizures in advance by adjusting the brightness.

In order to solve the above problems, a video display device according to the present invention provides a television broadcast signal and a DVD / VTR software image signal on a liquid crystal panel. Detection means for detecting the presence of a scene (image) that may induce a photosensitivity seizure, display control means for outputting a dimming control signal based on the detection signal detected by the detection means, and display control means And a dimming unit for performing dimming of the backlight unit based on the dimming control signal supplied from the light source.
In order to solve the above problems, a video display device according to the present invention is a video display device for displaying a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel. Based on the photosensitivity presence information detected by the detection means, the detection means for detecting the photosensitivity presence information in advance by adding the photosensitivity presence information of the scene (image) that induces the photosensitivity seizure in advance Display control means for outputting a dimming control signal, and dimming means for performing dimming of the backlight unit based on the dimming control signal supplied from the display control means.
Furthermore, the photosensitivity presence information according to the present invention is added to the vertical synchronization blanking period of the frame signal.
Further, the vertical synchronization blanking period according to the present invention is characterized in that it is temporally ahead of a frame signal of a scene (image) that induces a photosensitivity attack.
Furthermore, the video display device according to the present invention is a video display device for displaying a television broadcast signal and a DVD / VTR software image signal on a liquid crystal panel, and a storage means for temporarily storing the television broadcast signal and the DVD / VTR software image signal. A delay unit that outputs the image signal temporarily stored by the storage unit after a predetermined time delay, and a scene (image) that induces a photosensitivity attack within a predetermined time from the image signal temporarily stored by the storage unit. Detection means for outputting a detection signal, display control means for outputting a dimming control signal based on the detection signal supplied from the detection means, and a backlight based on the dimming control signal supplied from the display control means A dimming means for performing dimming of the unit is provided.
Further, the display control means according to the present invention is characterized by providing notification information for notifying that the dimming means is dimming to the display.
Further, the display control means according to the present invention is characterized in that the output of the dimming control signal is restricted based on the restriction information set by the external input means, and the restriction information includes the program name, software name, and viewer It is characterized by the age.
In addition, scenes (images) that induce photosensitivity seizures according to the present invention include flashing scenes (images) exceeding a predetermined frequency, rapid cut changes exceeding a predetermined frequency, and rapidly changing scenes (images). Or a scene (image) of blinking or cut change using a single red color, or a scene (image) of a regular pattern (stripe pattern, spiral, etc.) with a difference in luminance.
Furthermore, the image display method of the video display device according to the present invention is an image display method of a video display device that displays a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel. A detection step for detecting the presence of a scene (image) that may induce a photosensitivity seizure in the image signal; and a display control step for outputting a dimming control signal based on the detection signal detected in the detection step; And a dimming step for performing dimming of the backlight unit based on the dimming control signal supplied from the display control step.
The image display method of the video display device according to the present invention is an image display method of a video display device that displays a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel. A scene (image) detection signal that induces a photosensitivity attack is added to the image signal in advance, and a detection process for detecting the detection signal and a dimming control signal based on the detection signal detected in the detection process are output. And a dimming step for performing dimming of the backlight unit based on a dimming control signal supplied from the display control step.
Furthermore, an image display method for a liquid crystal display device according to the present invention is an image display method for a liquid crystal display device that displays a television broadcast signal and an image signal of a DVD / VTR software on a liquid crystal panel. A storage step for temporarily storing an image signal; a delay step for outputting the image signal temporarily stored in the storage step by delaying a predetermined time; and a photosensitivity attack within the predetermined time from the image signal temporarily stored in the storage step. Detecting a scene (image) that induces light and outputting a detection signal, a display control step for outputting a dimming control signal based on the detection signal supplied from the detection step, and a display control step And a dimming step for performing dimming of the backlight unit based on the dimming control signal.

  According to the present invention, when it is detected that there is a scene (image) that may induce a light-sensitive seizure in a TV broadcast signal or a DVD / VTR software image signal, the dimming means is connected to the backlight unit. Because the brightness is controlled, the brightness of the backlight unit can be reduced when a scene (image) that induces a light-sensitive seizure is displayed on the LCD panel, and a scene (image) that induces a light-sensitive seizure. It is possible to prevent the effects of photosensitivity attacks on viewers without changing any of them.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that in this embodiment, a liquid crystal display device is described.

  First, the first embodiment will be described. FIG. 1 is a block diagram of a main part of a first embodiment of a video display apparatus according to the present invention. In FIG. 1, a liquid crystal display device 1 is supplied from an information input unit 2 that takes in a TV broadcast television signal, a DVD / VTR software image signal or audio signal from an external device 12, and additional information, and an information input unit 2. Image processing means 3 for performing image processing on TV signals and DVD / VTR software image signals, and scenes (images) that may induce photosensitivity seizures from the TV signals and DVD / VTR software image signals. Detection means 4 for detecting the photosensitivity presence information indicating the above and a CPU block 18 for controlling the entire apparatus.

  The image processing unit 3 extracts an image signal from the information supplied from the information input unit 2 and performs image processing on the image signal. However, in a scene (image) that may induce a photosensitivity attack, It is provided to the panel control means 7 in real time without any change or correction.

  The photosensitivity presence information detected by the detection means 4 indicates the presence of a scene (image) that may induce a photosensitivity attack from an image signal of a television signal or DVD / VTR software. This information is set in compliance with guidelines and the like that are disclosed from the side and are self-explanatory to image effects that may induce photosensitivity seizures.

  The photosensitivity presence information is information that is supplied as additional information such as TV signal program information or DVD / VTR software content information, or is added (inserted) in advance to an image signal.

  In addition, the liquid crystal display device 1 includes a display control unit 5 that outputs a dimming control signal according to an instruction from the CPU block 18 based on the photosensitivity presence information detected by the detection unit 4, and a control supplied from the display control unit 5. Light control means 6 that performs light control of the backlight unit 8 based on the light control signal, and panel control means 7 that performs control for appropriately displaying the image signal provided from the image processing means 3 on the liquid crystal panel 9. And a backlight unit 8 that is lit at the brightness (luminance) adjusted by the light control means 6.

  The light control means 6 is an inverter having a variable output power function, and the backlight unit 8 is formed of an LED (light emitting diode) or a fluorescent tube.

  Further, the liquid crystal display device 1 includes a display unit configured by an indicator 10 and displays that the dimming unit 6 (inverter) is dimming based on notification information notified from the display control unit 5.

  Further, the display control means 5 is configured to be able to restrict the output of the dimming control signal according to an instruction from the CPU block 18 based on the restriction information set by the external input means (such as the remote controller 11).

  Next, the operation for preventing the induction of the photosensitivity attack of the liquid crystal display device 1 will be described.

  Here, production guidelines for anime programs and the like that may induce photosensitivity seizures will be described. By producing and broadcasting anime and other media in accordance with these guidelines, the risk of photosensitivity seizures resulting from the program is avoided.

1): Flashing light
Avoid using more than one flash of light within 1/3 second = 3 Hz (8 frames for film, 10 frames for TV frame).

2): Fast-changing images Avoid sudden use of cuts or rapidly changing images more than once every 1/3 second (= 3Hz).

3): Flashing red color and cut change Avoid using flashing red color and cut change.

4): Regular pattern with brightness difference Avoid using regular patterns with brightness difference (stripes, spirals, etc.).

  Producers such as anime programs check the presence of image signals that may induce photosensitivity seizures, and incorporate photosensitivity presence information in TV broadcast program information and DVD content information in advance. Photosensitive presence information is added for each frame of the video signal.

  FIG. 2 is a diagram showing the frame addition position of the photosensitivity presence information in the method of adding photosensitivity presence information for each frame of the video signal according to the present invention. 2, the horizontal sync signal (HSYNC), the vertical sync signal (VSYNC), the composite sync signal (CSYNC), and the position where the photosensitivity presence information is inserted into the vertical sync blanking period of the frame signal are shown.

  Since a closed caption signal, a VHS copy guard signal, and the like are mixed in the blanking period, the photosensitivity presence information is inserted at a position avoiding these signals.

  Since the photosensitivity presence information is added during the vertical synchronization blanking period of the frame signal, an animation program or the like can be created without affecting the image signal displayed on the liquid crystal panel 9.

  Further, the vertical synchronization blanking period in which the photosensitivity presence information is inserted is temporally earlier than the frame signal of the scene (image) that induces the photosensitivity attack.

  When the frame of the animation program progresses and the detection means 4 detects the photosensitivity presence information, the display control means 5 supplies a dimming control signal to the dimming means 6 according to the instruction of the CPU block 18, and the dimming means 6 The dimming of the backlight unit 8 is controlled to reduce the luminance of the backlight unit 8.

  At the time when a frame (image signal) that may induce a photosensitivity seizure is displayed on the liquid crystal panel 9, the brightness of the backlight unit 8 has already decreased. The effects of photosensitivity seizures can be prevented in advance.

  FIG. 3 is an image relationship diagram of photosensitivity presence information, a scene (image signal) that induces photosensitivity seizures, and backlight unit luminance according to the present invention. In FIG. 3, <Pattern 1> is a case where the luminance of the backlight unit is reduced from the beginning to the end of the animation program, and <Pattern 2> may induce a plurality of photosensitive hypersensitivity attacks in the animation program. In this case, the luminance of the backlight unit is lowered for each frame (image signal).

  In <Pattern 1> and <Pattern 2>, when the backlight unit luminance is reduced from 100% to α% (α is an arbitrary setting value), the photosensitivity presence information JD is used to reduce the backlight unit luminance. When returning from α% to 100%, stop information JP is adopted.

  In <Pattern 2>, the time Ta elapses from the time when the backlight unit luminance decreases (α%) until the occurrence of a scene SL that induces a photosensitivity seizure, and from the photosensitivity presence information JD to the stop information JP It is set so that the scene SL that induces the photosensitive hypersensitivity attack is completed up to the time Tb. As a modification of <Pattern 1> and <Pattern 2>, the occurrence frequency and occurrence time interval of the scene SL is detected to change the backlight unit luminance level, or the cumulative number of photosensitivity presence information JD ( It is also possible to gradually decrease the backlight unit luminance level according to the cumulative number of scenes SL.

  When the backlight brightness of the backlight unit 8 is reduced (during dimming), the viewer indicates that the influence of a scene (image) that may induce a photosensitivity attack is avoided. 10 (display) can be recognized.

  Moreover, although the backlight brightness of the backlight unit 8 is reduced by detecting the photosensitivity presence information, the display control means 5 is based on the restriction information set by the remote controller 11 (external input means). The output of the dimming control signal supplied from may be limited.

  The restriction information set by the remote controller 11 is information corresponding to a TV broadcast program name (by genre) and a DVD or VTR software name.

  Further, the restriction information set by the remote controller 11 is information corresponding to the age of the viewer.

  The subject affected by the photosensitivity seizure is a relatively young person, and not all viewers are targeted. For the subject who is not affected, the image of the liquid crystal panel 9 is the entire story. It is not appropriate to darken over time.

  Therefore, control of <Pattern 1> and <Pattern 2> is executed to reduce the backlight brightness only when a scene exists and the affected age (for example, under 5 years old) matches the age. On the other hand, for the age that is not affected, the backlight luminance can be prevented from being lowered even if the photosensitivity presence information is detected.

  The same applies to TV broadcast program names (by genre) and DVD and VTR software names. There are scenes detected by photosensitivity presence information, and program names (by genre) and DVD and VTR software names are applicable. Only when it matches the information, the control of <Pattern 1> or <Pattern 2> is executed to lower the backlight luminance.

  Note that the age, program name (by genre) and software name of DVD or VTR as the restriction information are displayed on the liquid crystal display device 1 with the menu button of the remote controller 11, for example, and the button operation of the remote controller 11 is performed. Set the age, program name (by genre) and DVD / VTR software name. The set restriction information is stored in the CPU block 18. The CPU block 18 extracts age restriction information, program names (by genre) and DVD and VTR software names from TV broadcast program information and DVD content information, and matches the restriction information stored in the CPU block 18. Alternatively, the display control means 5 is controlled to control the backlight luminance when the mismatch is determined and matched. The remote controller 11 may be provided with an on / off button corresponding to whether or not the restriction is applied, and for example, setting / cancellation may be performed during viewing.

  As described above, the liquid crystal display device 1 according to the present invention preliminarily adds photosensitivity presence information of a scene (image) that induces a photosensitivity attack to a television broadcast signal or an image signal of DVD / VTR software. The detection means 4 detects the photosensitivity presence information, the display control means 5 outputs a dimming control signal, and the dimming means 6 controls the dimming of the backlight unit 8. When a scene (image) that induces a photosensitivity seizure is displayed, the brightness of the backlight unit 8 can already be reduced, and the scene (image) that induces the photosensitivity seizure can be changed without any change. In this way, it is possible to prevent the effects of photosensitivity attacks on viewers. The method for adding photosensitivity presence information for each frame of a video signal has been described in detail. However, in the method for adding photosensitivity presence information to additional information such as TV broadcast program information and DVD content information. In addition, the detection means 4 detects the photosensitivity presence information in the additional information. For example, when there is frame information with a photosensitivity scene, the same processing is performed thereafter, backlight control is performed, For example, the CPU block 18 detects the level and controls the display control means 5 by adding a signal divided into levels depending on whether there are many or few scenes that induce light-sensitive seizures. It is possible to execute control of backlight luminance suitable for the level.

  Next, a second embodiment will be described. FIG. 4 is a block diagram of a main part of a liquid crystal display device according to a second embodiment of the present invention.

  In FIG. 4, the liquid crystal display device 13 includes information input means 2, detection means 4, display control means 5, light control means 6, panel control means 7, backlight unit 8, liquid crystal panel 9 and indicator 10, and CPU block 18. I have. The CPU block 18 is supplied with input information from an external input means (remote controller 11).

  In the liquid crystal display device 1 of the first embodiment, the presence of photosensitivity presence information is checked in advance by checking for the presence of an image signal that may induce a photosensitivity attack such as an animation program. The liquid crystal display device 13 according to the second embodiment is different in that the possibility of inducing a photosensitivity attack directly from an image signal of an animation program or the like is different.

  Further, the liquid crystal display device 13 of the second embodiment is different in that the image processing means 14 includes a storage means 15 and a delay means 16.

  Except for the above differences, the liquid crystal display device 13 and the liquid crystal display device 1 have the same configuration. Therefore, the description of the same portion is omitted, and the image processing unit 14 will be mainly described.

  When the image processing means 14 is supplied with a television signal from the information input means 2 or a DVD / VTR software image signal from the external device 12, the storage means 15 temporarily stores these image signals, and stores the stored image signals. The detection means 4 and the delay means 16 are supplied.

  The delay unit 16 delays the image signal supplied from the storage unit 15 by a predetermined time (for example, 5 seconds), and supplies the delayed image signal to the panel control unit 7. At this point, no change or modification is made to the image signal, and the original image signal remains unchanged.

  The image signal supplied to the detection means 4 is advanced by the predetermined time (for example, 5 seconds) with respect to the image signal supplied to the panel control means 7. The detection means 4 is temporarily stored from the storage means 15. Within the predetermined time set by the delay means 16, the above-described factor signal of the scene (image) that induces the photosensitivity attack is detected from the obtained image signals and supplied to the CPU block 18 as a detection signal.

  Here, the detection signal will be described. The detection signal is a factor signal that causes a scene (image) that induces a light-sensitive seizure. The cause signal conforms to the contents of the above-mentioned guideline, and the scene of flashing light (image) exceeding the predetermined frequency, the sudden cut change exceeding the predetermined frequency, the rapidly changing scene (image), and red are used in a single color. It is a signal of a phenomenon such as a scene (image) of blinking or cut change or a scene (image) of a regular pattern (striped pattern, spiral, etc.) having a luminance difference.

  The detection means 4 also recognizes the time when the detection signal is detected, and supplies time information to the CPU block 18.

  Since the CPU block 18 recognizes the position (time) of the factor signal that may induce the photosensitivity attack of the temporarily stored image signal, the CPU block 18 delays the display control means 5 by a predetermined time (for example, 5 seconds). The timing at which the detection signal is supplied to the light control means 6 is controlled.

  Since the CPU block 18 captures a scene (image) that may induce a photosensitivity attack of the image signal before the delayed image signal is displayed on the liquid crystal panel 9, this scene (image) is captured. ) Before time, the detection signal is supplied to the light control means 6 to reduce the backlight brightness of the backlight unit 8.

  FIG. 5 is an image relationship diagram of a detection signal, a scene (image) that induces a light-sensitive seizure, and the backlight unit luminance according to the present invention. In FIG. 5, the animation program (output image signal) SG2 is delayed by a delay time TD (for example, 5 seconds) from the animation program (input image signal) SG1. <Pattern 3> is a case where the brightness of the backlight unit is lowered from the beginning to the end of the delayed anime program, and <Pattern 4> may induce multiple photosensitivity attacks in the delayed anime program. In this case, the luminance of the backlight unit is lowered for each frame (image signal).

  In <Pattern 3> and <Pattern 4>, when the backlight unit luminance is reduced from 100% to α% (α is an arbitrary set value), the detection signal SD is adopted, and the backlight unit luminance is changed from α%. When returning to 100%, the stop signal SP is adopted. However, the detection signal SD and the stop signal SP are not inserted into the image signal, but are output from the detection means 4 at the timing of the image signal (output image signal SG2).

  In <Pattern 4>, the time Ta elapses from when the backlight unit luminance decreases (α%) until a scene SL that induces a photosensitivity attack occurs, and the time from the detection signal SD to the stop signal SP. It is set so that the scene SL that induces a photosensitive seizure during Tb ends.

  Although description is omitted, the reduction of the backlight luminance of the backlight unit 8 is controlled based on input information input from the remote controller 11 (external input means), or the backlight luminance of the backlight unit 8 is It is the same as in the first embodiment to display and notify that the light is being reduced (during light control) with the indicator 10.

  In the present embodiment, the image displayed on the liquid crystal panel 9 is delayed by a predetermined time from the original image (signal), but there is no problem in actual use.

  As described above, in the liquid crystal display device 13 according to this embodiment, the storage unit 15 temporarily stores the TV broadcast signal and the DVD / VTR software image signal, and the image supplied from the storage unit 15 to the detection unit 17. A scene (image) that induces a photosensitivity attack is detected within the predetermined time from the image signal that is delayed by a predetermined time (for example, 5 seconds) with respect to the signal and temporarily stored by the detection means 4. In response to the instruction, the display control means 5 outputs a dimming control signal, and the dimming means 6 controls the dimming of the backlight unit 8. Therefore, although there is a delay of a predetermined time, the liquid crystal panel 9 is subjected to a photosensitivity seizure. At the time when the scene (image) to be induced is displayed, the brightness of the backlight unit 8 can already be reduced, and the viewer (view) is induced without changing the scene (image) that induces the photosensitivity seizure. Of the influence of the photosensitive epilepsy can be prevented.

  In addition, this invention is not limited to the said embodiment, It can change and implement in the range which does not deviate from the summary of invention. In the present embodiment, the liquid crystal display device is described, but any video display device including a backlight is targeted.

  The present invention prevents scenes (images) that may induce photosensitivity seizures by lowering the brightness of the backlight, and can be applied to any device.

1 is a block diagram of a main part of a liquid crystal display device according to a first embodiment of the present invention. It is a figure showing the frame addition position of the photosensitivity presence information in the method of adding photosensitivity presence information for every frame of the video signal which concerns on this invention. It is an image relationship figure of the photosensitivity presence information which concerns on this invention, the scene which induces a photosensitivity attack, and a backlight unit brightness | luminance. It is a principal block block diagram of 2nd Embodiment of the liquid crystal display device based on this invention. It is an image relationship figure of the detection signal which concerns on this invention, the scene which induces a photosensitivity attack, and a backlight unit brightness | luminance.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 13 ... Liquid crystal display device 2 ... Information input means 3, 14 Image processing means 4 ... Detection means 5 ... Display control means 6 ... Light control means 7 ... Panel control means 8 ... Backlight unit 9 ... Liquid crystal panel 10 ... Indicator 11 ... Remote control 12 ... External device 15 ... Storage means 16 ... Delay means 18 ... CPU block SG, SG1, SG2 ... Image signal JD ... Photosensitivity presence information JP ... Stop information SD ... Detection signal SL ... Photosensitivity seizure Scene SP ... Stop signal TD ... Delay time

Claims (16)

In a video display device that displays TV broadcast signals and DVD / VTR software image signals on a liquid crystal panel,
Detection means for detecting the presence of a scene (image) that may induce a photosensitivity seizure in the television broadcast signal or DVD / VTR software image signal, and based on the detection signal detected by the detection means An image comprising: display control means for outputting a dimming control signal; and dimming means for performing dimming of a backlight unit based on the dimming control signal supplied from the display control means Display device. In a video display device that displays TV broadcast signals and DVD / VTR software image signals on a liquid crystal panel,
Detection means for detecting photosensitivity presence information in advance by adding photosensitivity presence information of a scene (image) that induces a photosensitivity seizure to the television broadcast signal and DVD / VTR software image signal; Display control means for outputting a dimming control signal based on the photosensitivity presence information detected by the detecting means, and dimming the backlight unit based on the dimming control signal supplied from the display control means And a dimming means.   3. The video display device according to claim 2, wherein the photosensitivity presence information is added to a vertical synchronization blanking period of a frame signal.   4. The video display apparatus according to claim 3, wherein the vertical synchronization blanking period is temporally preceding a frame signal of a scene (image) that induces the photosensitive hypersensitivity attack. In a video display device that displays TV broadcast signals and DVD / VTR software image signals on a liquid crystal panel,
Storage means for temporarily storing the television broadcast signal and DVD / VTR software image signal, delay means for delaying and outputting the image signal temporarily stored by the storage means for a predetermined time, and image temporarily stored by the storage means A detection unit that detects a scene (image) that induces a photosensitivity attack within the predetermined time from the signal, outputs a detection signal, and outputs a dimming control signal based on the detection signal supplied from the detection unit An image display device comprising: a display control unit that performs light control; and a light control unit that performs light control of the backlight unit based on a light control signal supplied from the display control unit.   6. The display control unit according to claim 1, wherein the display control unit provides notification information for notifying that the dimming unit is dimming to the display unit. The video display device described.   The said display control means restrict | limits the output of a light control signal based on the restriction | limiting information set with an external input means, The claim 1, The claim 2, The claim 1 characterized by the above-mentioned. The video display device described.   8. The video display apparatus according to claim 7, wherein the restriction information includes a program name and a software name.   The video display apparatus according to claim 7, wherein the restriction information is a viewer's age.   The scene (image) that induces the photosensitivity seizure is a scene (image) of blinking light exceeding a predetermined frequency, according to any one of claims 1, 2, and 5. The video display device described in 1.   6. The scene (image) that induces the photosensitivity seizure is a sudden cut change exceeding a predetermined frequency or a rapidly changing scene (image). The video display device described. 6. The scene (image) that induces the photosensitivity seizure is a flashing or cut-change scene (image) using red as a single color. The video display device according to claim 1.   The scene (image) that induces the photosensitivity seizure is a scene (image) of a regular pattern (striped pattern, spiral, etc.) having a luminance difference. The video display device according to claim 5. In an image display method of a video display device that displays a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel,
A detection step of detecting the presence of a scene (image) that may induce a photosensitivity attack in the image signal of the TV broadcast signal or DVD / VTR software;
A display control step of outputting a dimming control signal based on the detection signal detected in the detection step;
A dimming step for performing dimming of the backlight unit based on the dimming control signal supplied from the display control step;
An image display method for a video display device, comprising: In an image display method of a video display device that displays a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel,
A detection step of detecting the detection signal in advance by adding a detection signal of a scene (image) that induces a photosensitivity attack to the image signal of the TV broadcast signal or DVD / VTR software;
A display control step of outputting a dimming control signal based on the detection signal detected in the detection step;
A dimming step for performing dimming of the backlight unit based on the dimming control signal supplied from the display control step;
An image display method for a video display device, comprising: In an image display method of a video display device that displays a television broadcast signal and an image signal of DVD / VTR software on a liquid crystal panel,
A storage step of temporarily storing the television broadcast signal and the image signal of the DVD / VTR software;
A delay step of delaying and outputting the image signal temporarily stored in the storage step by a predetermined time;
A detection step of detecting a scene (image) that induces a photosensitivity attack within the predetermined time from the image signal temporarily stored in the storage step, and outputting a detection signal;
A display control step for outputting a dimming control signal based on the detection signal supplied from the detection step, and a dimming for performing dimming of the backlight unit based on the dimming control signal supplied from the display control step Process,
An image display method for a video display device, comprising:

Images