WO2011122291A1 - 映像表示装置、映像表示システム、映像提示方法、並びにコンピューター・プログラム - Google Patents
映像表示装置、映像表示システム、映像提示方法、並びにコンピューター・プログラム Download PDFInfo
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- WO2011122291A1 WO2011122291A1 PCT/JP2011/055647 JP2011055647W WO2011122291A1 WO 2011122291 A1 WO2011122291 A1 WO 2011122291A1 JP 2011055647 W JP2011055647 W JP 2011055647W WO 2011122291 A1 WO2011122291 A1 WO 2011122291A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0237—Switching ON and OFF the backlight within one frame
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0252—Improving the response speed
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
Definitions
- the present invention is used for displaying stereoscopic images using a shutter mechanism, and is used in a video display device, a video display system, a video presentation method, and a computer program that alternately display a plurality of videos on a very short cycle.
- the present invention relates to a video display device, a video display system, a video presentation method, and a computer program that display a screen by alternately switching a plurality of videos in a very short period while preventing crosstalk between videos.
- the time-division stereoscopic video display system includes a combination of a display device that displays a plurality of different videos in a time-sharing manner and shutter glasses worn by a video observer.
- the display device alternately displays the left-eye video L and the right-eye video R on the screen at a very short cycle, and at the same time, synchronizes with the cycle of the left-eye video L and the right-eye video R.
- the left eye part of the shutter glasses transmits light and the right eye part blocks light.
- the right eye image R is displayed, the right eye part of the shutter glasses transmits light, the left eye part shields the light, and the right eye part of the shutter glasses is displayed while the right eye image is displayed. Transmits light and the left eye part blocks light (see, for example, Patent Documents 1 to 3).
- the display device used for stereoscopic image display is not limited to a specific method.
- a plasma display panel (PDP), a liquid crystal display (LCD), and an electroluminescence (EL) panel can be used in addition to a conventional CRT (Cathode Ray Tube) display.
- the liquid crystal display is generally an active matrix type in which a TFT (Thin File Transistor) is arranged for each pixel.
- the TFT liquid crystal display drives each pixel by writing a video signal for each scanning line from the upper part to the lower part of the screen, and performs display by blocking or transmitting the irradiation light from the backlight. .
- the left-eye video L and the right-eye video R can be separated by providing a period in which both shutter mechanisms are simultaneously closed (for example, See FIG.
- the liquid crystal display always displays, when the left and right shutter mechanisms are switched to the open state, it takes time for the liquid crystal used for the shutter to rise. Enters the left and right eyes, and the luminance at the time-division display is lowered.
- An object of the present invention is an excellent video display device and video display system that are used for displaying stereoscopic images using a shutter mechanism, and that can switch between a plurality of videos alternately in a very short cycle and display them appropriately. It is to provide a video presentation method and a computer program.
- a further object of the present invention is to provide an excellent video display device, video display system, video presentation method, capable of alternately switching a plurality of videos in a very short cycle while preventing crosstalk between videos, and displaying the screen. As well as providing computer programs.
- a display unit that switches and displays a plurality of different videos for each subframe period;
- a light source unit that illuminates the display unit while alternately performing a lighting operation and a light-off operation so as to include a lighting period within each subframe period;
- the shutter mechanism for observing the plurality of images while being separated is switched to an open state when the light source unit is turned off, and is switched to a closed state when the light source unit is turned on.
- the light source unit is configured by a light emitting diode.
- the invention according to claim 3 of the present application is A shutter mechanism; A display unit that switches and displays a plurality of different images for each subframe period, and a light source unit that illuminates the display unit while alternately performing a lighting operation and a non-lighting operation so as to include a lighting period within each subframe period;
- the shutter control unit controls the opening / closing timing so that the shutter mechanism is switched to an open state during a period when the light source unit is turned off and is switched to a closed state during a period when the light source unit is lit.
- a video display device comprising: Is a video display system.
- system here refers to a logical collection of a plurality of devices (or functional modules that realize specific functions), and each device or functional module is in a single housing. It does not matter whether or not.
- a plurality of different images displayed by a video display device having a display unit that displays a video and a light source unit that illuminates the display unit are displayed by opening and closing operations of a shutter mechanism.
- a computer program written in a computer-readable format so as to execute processing for separately presenting on a computer the computer comprising: Video control means for switching and displaying a plurality of different videos on a subframe period basis on the display unit, Backlight control means for alternately performing a lighting operation and a light-off operation of the light source unit so that the display unit includes a lighting period in each subframe period in which each of the plurality of videos is displayed in a time-sharing manner; A shutter control means for switching the shutter mechanism to an open state during a period when the light source unit is turned off, and switching to a closed state during a period when the light source unit is lit. It is a computer program to function as.
- the computer program according to claim 5 of the present application defines a computer program written in a computer-readable format so as to realize predetermined processing on a computer.
- a cooperative operation is exhibited on the computer, and the same effect as the video display device according to claim 1 of the present application is obtained. be able to.
- the invention according to claim 6 of the present application is A display unit that switches and displays a plurality of different videos for each subframe period; A light source unit that illuminates the display unit while alternately performing a lighting operation and a light-off operation so as to include a lighting period within each subframe period; For the shutter mechanism for observing while separating the plurality of images, switching to the open state during the period when the light source unit is turned on, and switching to the closed state during the period when the light source unit is turned off, A shutter control unit for controlling the opening and closing timing; Is a video display device.
- the invention according to claim 7 of the present application is A display unit for switching a plurality of different videos for each subframe period for each block obtained by dividing the screen into a plurality of sub-frame periods; A plurality of light source units that are provided for each block of the display unit and illuminate while alternately performing a lighting operation and an extinguishing operation; The shutter mechanism for observing the plurality of images while separating them is switched to an open state during a period when at least one of the plurality of light source units is turned on, and the at least one light source unit is turned off.
- a shutter control unit that controls the opening and closing timing so as to switch to the closed state during the period; Is a video display device.
- the video display device described in claim 7 includes a plurality of shutter mechanisms, and the plurality of light source units are in a period in which all the shutter mechanisms are closed. At least one of them is lit.
- an excellent video display device and video display system that are used for displaying stereoscopic images using a shutter mechanism and that can switch between a plurality of videos alternately in a very short cycle and display them on a screen.
- a video presentation method, and a computer program can be provided.
- an excellent video display device, video display system, and video presentation method capable of alternately switching a plurality of videos in a very short cycle and displaying them on the screen while preventing crosstalk between videos.
- video display system capable of alternately switching a plurality of videos in a very short cycle and displaying them on the screen while preventing crosstalk between videos.
- video presentation method capable of alternately switching a plurality of videos in a very short cycle and displaying them on the screen while preventing crosstalk between videos.
- computer programs As well as computer programs.
- the shutter mechanism of the corresponding lens on the shutter glasses side is opened during the time when the backlight is turned off, and the shutter mechanism is closed while the backlight is turned on.
- the backlight of the liquid crystal display is turned on after the shutter mechanism responds sufficiently on the shutter glasses side, it is not affected by insufficient response when the shutter mechanism starts up.
- the peak luminance can be increased, and the luminance can be improved when displaying a stereoscopic image.
- the backlight can be turned on for a relatively long time, the temperature of the liquid crystal display panel is not lowered when the backlight is turned off, and the deterioration of the crosstalk is also reduced.
- FIG. 1 is a diagram schematically showing a configuration of a stereoscopic video display system to which the present invention can be applied.
- FIG. 2 is a diagram illustrating a control operation of the shutter glasses 20 in the L subframe period.
- FIG. 3 is a diagram illustrating a control operation of the shutter glasses 20 in the R subframe period.
- FIG. 4 is a diagram illustrating an operation of opening the shutter mechanism on the shutter glasses side when the backlight is turned off and closing the shutter mechanism while the backlight is turned on.
- FIG. 5 is a diagram showing an operation of opening the shutter mechanism on the shutter glasses side while the backlight is lit and closing the shutter mechanism while the backlight is turned off.
- FIG. 1 is a diagram schematically showing a configuration of a stereoscopic video display system to which the present invention can be applied.
- FIG. 2 is a diagram illustrating a control operation of the shutter glasses 20 in the L subframe period.
- FIG. 3 is a diagram illustrating a control operation of the shutter glasses 20 in the R
- FIG. 6 shows an operation for separating the left-eye video L and the right-eye video R in a liquid crystal display that is partially driven by dividing the liquid crystal display panel screen into three blocks, an upper part, a central part, and a lower part.
- FIG. FIG. 7 is a diagram illustrating an operation for separating the left-eye image L and the right-eye image R by the opening / closing operation of the shutter mechanism of the shutter glasses while the liquid crystal display backlight is always turned on.
- FIG. 8 is a diagram illustrating an operation for separating the left-eye video L and the right-eye video R by turning on the backlight in synchronization with the shutter mechanism of the shutter glasses.
- the liquid crystal display 10 includes a liquid crystal display panel 11, a backlight 12, a video signal processing unit 13, a shutter control unit 14 that controls the opening / closing timing of the shutter mechanism of the shutter glasses 20, a timing control unit 15, and a backlight control.
- the unit 16 includes a data driver 17 and a gate driver 18.
- the liquid crystal display 10 based on the input video signal D in containing the right-eye image signal D R and the video signal D L for the left eye with the left and right parallax, and outputs display images.
- the liquid crystal display panel 11 is, for example, an active matrix type in which TFTs are arranged for each pixel.
- the backlight 12 is a light source that irradiates the liquid crystal display panel 11 with light. Based on the control signal CTL B supplied from the backlight control unit 16, the backlight 12 is controlled so as to switch its lighting (light emission) operation and light-off operation in a time division manner.
- the backlight 12 for example, an LED (Light Emitting Diode) or a CCFL (Cold Cathode Fluorescent Lamp) can be used.
- CCFL Cold Cathode Fluorescent Lamp
- afterglow is likely to occur, and the afterglow characteristics for each color of RGB are different. Therefore, in the following description, it is assumed that an LED with little afterglow is used for the backlight 12.
- the liquid crystal display panel 11 has a plurality of pixels arranged in a matrix as a whole, and the light emitted from the backlight 12 based on the video voltage supplied from the data driver 17 is supplied from the gate driver 18. by modulating in accordance with the drive signal that performs image display based on the input image signal D in.
- the liquid crystal display panel 11 is 1 within a predetermined period such as a frame period, the left-eye video based on the right eye image signal D image R for the right eye based on R and the left eye image signal D L L is displayed alternately in a time division manner.
- the timing control unit 15 controls the driving timing of the gate driver 18 and the data driver 17 and supplies the video signal D1 supplied from the video signal processing unit 13 to the data driver 17.
- the timing control unit 15 may perform an overdrive process on the video signal D1.
- the gate driver 18 sequentially drives each pixel in the liquid crystal display panel 11 along the gate line according to the timing control by the timing control unit 15.
- the data driver 17 supplies a video voltage based on the video signal D1 supplied from the timing control unit 15 to each pixel of the liquid crystal display panel 11. Specifically, the video signal D1 is subjected to D / A conversion to generate an analog video signal corresponding to the video voltage and output to each pixel.
- the shutter control unit 14 corresponds to the output timing of the video signal for the right eye by the video signal processing portion 13 D R and the left eye image signal D L, the timing control signal CTL for controlling the opening and closing switching of the left and right shutter mechanisms Is output to the shutter glasses 20.
- wireless communication such as infrared communication or wireless LAN (Local Area Network) is used, and the shutter glasses 20 are connected to the liquid crystal display 10 by cable connection for wired communication. It can also be used.
- Japanese Patent Application No. 2009-276948 already assigned to the present applicant discloses a video display system in which the liquid crystal display 10 and the shutter glasses 20 are connected by a wireless network such as IEEE 802.15.4. ing.
- the shutter glasses 20 are worn by an observer (not shown in FIG. 1) of the liquid crystal display 10 to enable stereoscopic viewing.
- the shutter glasses 20 have a left-eye lens 21L and a right-eye lens 21R.
- the left-eye lens 21L and the right-eye lens 21R are each provided with a light shielding shutter (not shown) for shielding the opening.
- the light shielding shutter is configured by, for example, a liquid crystal shutter.
- the effective state (that is, the closed state) and the invalid state (that is, the opened state) of the light blocking function in these light blocking shutters are controlled by the control signal CTL supplied from the shutter control unit 14.
- the shutter control unit 14 alternately switches between the open state and the closed state of the left-eye lens 21R and the right-eye lens 21L corresponding to the display periods of the left-eye video L and the right-eye video R.
- the light shielding shutter of the shutter glasses 20 is controlled. Specifically, in the L sub-frame period, the light-shielding shutter of the left-eye lens 21L is opened, and the light-eye shutter of the right-eye lens 21R is closed, while in the R sub-frame period, the right eye is closed. Control is performed so that the initial light blocking shutter of the lens 21R is opened and the light blocking shutter of the left eye lens 21L is closed.
- FIG. 2 shows a control operation of the shutter glasses 20 in the L subframe period.
- the shutter of the left-eye lens 21L is opened and the shutter of the right-eye lens 21R is closed by the control signal CTL from the shutter control unit 14, and the left-eye lens is closed.
- the display light LL based on the image L is transmitted only through the left-eye lens 21L.
- FIG. 3 shows a control operation of the shutter glasses 20 in the R subframe period.
- the shutter of the right-eye lens 21R is opened and the shutter of the left-eye lens 21L is closed by the control signal CTL from the shutter control unit 14, and the right-eye lens is closed.
- the display light RR based on the image R is transmitted only through the right-eye lens 21R.
- Backlight control section 16 supplies a timing control signal corresponding to the output timing of the video signal for the right eye by the video signal processing portion 13 D R and the left eye image signal D L (control signal CTL B) in the backlight 12 . Accordingly, the backlight control unit 16 performs control so that the lighting operation and the extinguishing operation of the backlight 12 are switched in a time division manner in synchronization with the display switching of the left-eye video L and the right-eye video R. Specifically, the backlight control unit 16 lights the backlight 12 at a predetermined timing (start time) and duty (length) in each display period of the left-eye video L and the right-eye video R.
- the stereoscopic image display system 1 using the liquid crystal display 10 as shown in FIG. 1 for example, when the backlight is always turned on and the shutter glasses 20 are alternately switched between the open and closed states of the left and right shutter mechanisms.
- the left-eye video L and the right-eye video R can be separated.
- the display light LL based on the left-eye video L is separated from each other during a non-display period in which the backlight 12 is always turned on and both shutter mechanisms are simultaneously closed.
- a period during which only the left-eye lens 21L is transmitted (left-eye image L display period) and a period during which the display light RR based on the right-eye image R is transmitted through only the right-eye lens 21R (right-eye image R display period)
- the display light based on the left and right images becomes dark at this rising portion and passes through each lens.
- the observer has a problem that it occurs during a period in which a dark image is presented.
- the period during which the shutter mechanism is in the open state is short and the ratio of the rise time to the open period is large, the deterioration of the video cannot be ignored.
- the backlight 12 is not always turned on, but the shutter glasses 20 side is used. There is a method of lighting in synchronization with the left and right shutter mechanisms.
- the period during which the left and right shutter mechanisms are opened is relatively long.
- the display light LL based on the left-eye video L is transmitted only through the left-eye lens 21L (for the left-eye).
- the video L display period) and the period in which the display light RR based on the right-eye video R passes through only the right-eye lens 21R (right-eye video R display period) are alternately created.
- the lighting period of the backlight 12 By arranging the lighting period of the backlight 12 while avoiding the rise time within the opening period of the shutter mechanism, it is possible to prevent the image from becoming dark.
- the peak luminance increases when the lighting period is shortened, so that it is possible to improve luminance when displaying a stereoscopic image.
- the lighting period of the backlight 12 is shortened, the power consumption is reduced, but the response speed of the liquid crystal display panel 11 is reduced because the amount of heat released is reduced. When the response speed of the liquid crystal display panel 11 is lowered, there is a problem that the crosstalk is deteriorated.
- the display light LL based on the left-eye image L is transmitted only through the left-eye lens 21L
- the display light RR based on the right-eye image R is transmitted only through the right-eye lens 21R. It is necessary to separate a non-display period longer than a predetermined length during which both shutter mechanisms are simultaneously closed or the backlight is turned off.
- the lighting period of the backlight 12 is a period in which only the left-eye lens 21L or the right-eye lens 21R is transmitted as it is, the duty of the backlight 12 lighting period (BL lighting period) is set. For example, it must be suppressed to 25% or less.
- the period during which the shutter mechanisms of the left-eye lens 21L and the right-eye lens 21R are opened is a period during which only the left-eye lens 21L or the right-eye lens 21R is transmitted.
- the duty of the lighting period during which the light 12 is lit can be set to 100%. In this case, the temperature of the liquid crystal display panel 11 does not decrease and crosstalk does not occur, but the brightness of the display image decreases.
- the luminance and crosstalk at the time of stereoscopic image display are in a trade-off relationship with respect to the length of lighting time of the backlight.
- the inventors of the present invention as another method for separating the left-eye video L and the right-eye video R by lighting them in synchronization with the left and right shutter mechanisms on the shutter glasses 20 side, as shown in FIG.
- the shutter mechanism of the lens 21L or 21R corresponding to either the left or right side of the shutter glasses 20 is opened, and the shutter mechanism is closed while the backlight 12 is turned on. I propose a method.
- Backlight control section 16 supplies a timing control signal corresponding to the output timing of the video signal for the right eye by the video signal processing portion 13 D R and the left eye image signal D L (control signal CTL B) in the backlight 12
- the backlight 12 is intermittently turned on in each of the L subframe period and the R subframe period.
- the shutter control unit 14 the period during which the backlight 12 in the L sub-frame period based on the output timing of the left eye image signal D L by the video signal processor 13 is turned off, the lens 21L for the left eye
- a timing control signal CTL for switching the light-shielding shutter to the open state is output to the shutter glasses 20.
- the control signal CTL from the shutter control unit 14 sets the shutter for the left-eye lens 21L in the open state and the shutter for the right-eye lens 21R in the closed state. Is transmitted through only the left-eye lens 21L. Thereafter, the backlight 12 is turned on.
- the shutter of the left-eye lens 21L is switched to the closed state within the period in which the backlight is turned on, and both the left and right shutter mechanisms are simultaneously closed. The non-display period.
- the shutter controller 14 the period during which the backlight 12 in the R sub-frame period based on the output timing of the video signal D R for the left eye by the video signal processor 13 is turned off, the right-eye lens 21R A timing control signal CTL for switching the light-shielding shutter to the open state is output to the shutter glasses 20.
- the control signal CTL from the shutter control unit 14 sets the shutter for the right eye lens 21 ⁇ / b> R to the open state and the shutter for the left eye lens 21 ⁇ / b> L to the closed state. Is transmitted through only the right-eye lens 21R.
- the backlight 12 is turned on, but on the shutter glasses 20 side, the shutter of the right-eye lens 21R is switched to the closed state within the period in which the backlight is turned on, and both the left and right shutter mechanisms are simultaneously closed.
- the non-display period
- the backlight 12 is turned on intermittently, so that the period during which the left and right shutter mechanisms are opened on the shutter glasses 20 side is relatively long. ing.
- the backlight 12 is lit when the L subframe period and the R subframe period are switched, that is, when the open / close state of the left and right shutter mechanisms is switched.
- both the left and right shutter mechanisms are in a closed state, and both the left-eye lens 21L and the right-eye lens 21R provide a non-display period during which the display light of the liquid crystal display 10 is not transmitted.
- the shutters of the left-eye lens 21L and the right-eye lens 21R are switched to the open state, they are turned off (described above), switched to the open / closed state, and the shutter Lights after the rise time of the liquid crystal has elapsed. Thereafter, the backlight 12 is turned off within a non-display period in which neither the left-eye lens 21L nor the right-eye lens 21R transmits the display light of the liquid crystal display 10 when switching the open / close state of the left and right shutter mechanisms. .
- the backlight 12 since the backlight 12 is turned on on the liquid crystal display 10 side after the shutter mechanism sufficiently responds on the shutter glasses 20 side, there is insufficient response when the shutter mechanism starts up. Not affected. Further, the peak luminance can be increased as compared with the method of alternately switching the open / close state of the shutter mechanism on the shutter glasses 20 side with the backlight 12 always turned on as shown in FIG. Brightness can be improved.
- the temperature of the liquid crystal display panel 11 is reduced by turning off the backlight 12 by making the lighting period of the backlight 12 relatively longer than the method shown in FIG. 8. And the deterioration of crosstalk is reduced.
- the period during which both the left and right shutter mechanisms are closed is a non-display period, which is sufficiently long to prevent crosstalk.
- the duty of the backlight 12 can be increased to, for example, 50%.
- the backlight 12 is turned on intermittently in the same manner, in the method shown in FIG.
- the lighting period of the backlight 12 passes through only the left-eye lens 21L or the right-eye lens 21R as it is. Therefore, in order to set a sufficiently long non-display period and prevent crosstalk, the duty of the backlight 12 must be suppressed to, for example, 25% or less (described above).
- the duty of turning on the backlight 12 is 100%, and the luminance at the time of stereoscopic image display is reduced, but crosstalk can be prevented.
- the duty of the backlight 12 can be increased to, for example, 50%, and the luminance at the time of stereoscopic image display can be improved while preventing crosstalk.
- the time when the backlight 12 is lit corresponds to either the left or right side of the shutter glasses 20 side.
- a method of opening the shutter mechanism of the lenses 21L and 21R and closing the shutter mechanism while the backlight 12 is turned off is also conceivable.
- Backlight control section 16 supplies a timing control signal corresponding to the output timing of the video signal for the right eye by the video signal processing portion 13 D R and the left eye image signal D L (control signal CTL B) in the backlight 12
- the backlight 12 is intermittently turned on in each of the L subframe period and the R subframe period.
- the shutter control unit 14 the period during which the backlight 12 in the L sub-frame period based on the output timing of the left eye image signal D L by the video signal processing section 13 is illuminated, the lens 21L for the left eye A timing control signal CTL for switching the light-shielding shutter to the open state is output to the shutter glasses 20.
- the control signal CTL from the shutter control unit 14 sets the shutter for the left-eye lens 21L in the open state and the shutter for the right-eye lens 21R in the closed state. Is transmitted through only the left-eye lens 21L. Thereafter, the backlight 12 is turned off.
- the shutter of the left-eye lens 21L is switched to the closed state within the period in which the backlight 12 is turned off, and both the left and right shutter mechanisms are simultaneously closed. This is the non-display period.
- the shutter controller 14 the period during which the backlight 12 in the R sub-frame period based on the output timing of the right eye image signal D R by the video signal processing unit 13 is lit, the right-eye lens 21R A timing control signal CTL for switching the light-shielding shutter to the open state is output to the shutter glasses 20.
- the control signal CTL from the shutter control unit 14 sets the shutter for the right eye lens 21 ⁇ / b> R to the open state and the shutter for the left eye lens 21 ⁇ / b> L to the closed state. Is transmitted through only the right-eye lens 21R. Thereafter, the backlight 12 is turned off.
- the shutter of the right-eye lens 21R is switched to the closed state within the period in which the backlight 12 is turned off, and both the left and right shutter mechanisms are simultaneously closed. This is the non-display period.
- the duty of the backlight 12 can be increased to, for example, 50%, and the luminance at the time of stereoscopic image display can be improved while preventing crosstalk.
- liquid crystal displays there is a partial drive type product in which a screen of a liquid crystal display panel is divided into a plurality of blocks and the display is switched for each block.
- the left-eye image L and the right-eye image R are alternately displayed on the screen, and at the same time, the left-eye image L and the right-eye image are displayed.
- the period of R it is necessary to separate and provide images for the left eye and the right eye.
- the backlight for illuminating each block is lit intermittently during the L subframe period and the R subframe period.
- writing on the liquid crystal display is performed line-sequentially from the top of the screen, and the backlight is lit in the order from the top of the screen to the center of the screen and the bottom of the screen.
- the backlight is turned on in the order from the bottom of the screen to the center of the screen and the top of the screen.
- the shutter mechanism of the corresponding lens 21L / R on the left or right side of the shutter glasses 20 is switched to the open state during the period when the backlight for illuminating at least one of the divided blocks is turned on. Then, the shutter mechanism corresponding to the period during which the same backlight is turned off is switched to the closed state. In the example shown in FIG. 6, such an opening / closing operation of the shutter mechanism is performed at the upper part of the screen.
- the shutter mechanism is opened and closed while the backlight is turned off, and the backlight lighting period is accommodated in the period in which the shutter mechanism is opened.
- the shutter mechanism is switched to the open state during the period when the backlight is turned off, and the shutter mechanism is switched to the closed state during the period when the backlight is lit.
- the luminance at the time of displaying a stereoscopic image can be improved by lighting the backlight intermittently.
- crosstalk can be prevented by increasing the duty of each backlight.
- the period in which both the left and right shutter mechanisms are closed on the shutter glasses side is a non-display period in which neither the left lens nor the right lens transmits display light based on the image for each eye.
- the backlights of all the blocks are turned on all at once (or the backlights of at least some of the blocks are turned on) to increase the duty,
- the temperature of the liquid crystal display panel is prevented from decreasing during the backlight off period, and the response speed is maintained.
- the series of processing in the embodiment described in this specification can be performed by either hardware or software.
- a computer program in which processing procedures in the software are described in a computer-readable format may be installed and executed on a predetermined computer.
- the computer program can also be incorporated in a product such as a liquid crystal display.
- the screen of the liquid crystal display panel is divided into three blocks, an upper part, a central part, and a lower part, and the backlight is turned on in order from the upper part of the screen.
- the gist of the invention is not limited to this.
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Abstract
Description
互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構に対して、前記光源部が消灯している期間に開成状態に切り換え、前記光源部が点灯している期間に閉成状態に切り換えるように開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置である。
シャッター機構と、
互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、前記シャッター機構に対して、前記光源部が消灯している期間に開成状態に切り換え、前記光源部が点灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部を有する映像表示装置と、
を具備する映像表示システムである。
前記表示部で互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する映像制御ステップと、
各サブフレーム期間内に点灯期間を含むように、前記光源部の点灯動作と消灯動作を交互に行なわせるバックライト制御ステップと、
前記光源部が消灯している期間に前記シャッター機構を開成状態に切り換えるとともに、前記光源部が点灯している期間に閉成状態に切り換えるシャッター制御ステップと、
を有する映像提示方法である。
前記表示部で互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示させる映像制御手段、
前記表示部が前記複数の映像の各々を時分割で表示する各サブフレーム期間内に点灯期間を含むように、前記光源部の点灯動作と消灯動作を交互に行なわせるバックライト制御手段、
前記光源部が消灯している期間に前記シャッター機構を開成状態に切り換えるとともに、前記光源部が点灯している期間に閉成状態に切り換えるシャッター制御手段、
として機能させるためのコンピューター・プログラムである。
互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構に対し、前記光源部が点灯している期間に開成状態に切り換え、前記光源部が消灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置である。
画面を複数に分割したブロック毎に、互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
前記表示部の前記ブロック毎に設けられ、点灯動作と消灯動作を交互に行ないながら照明する複数の光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構に対し、前記複数の光源部のうち少なくとも1つが点灯している期間に開成状態に切り換え、前記の少なくとも1つの光源部が消灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置である。
10…液晶ディスプレイ
20…シャッター眼鏡
11…液晶表示パネル
12…バックライト
13…映像信号処理部
14…シャッター制御部
15…タイミング制御部
16…バックライト制御部
17…データ・ドライバー
18…ゲート・ドライバー
20…シャッター眼鏡
21L…左眼用レンズ、21R…右眼用レンズ
Claims (8)
- 互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構を、前記光源部が消灯している期間に開成状態に切り換え、前記光源部が点灯している期間に閉成状態に切り換えるように前開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置。 - 前記光源部は、発光ダイオード(LED)を含む、
請求項1に記載の映像表示装置。 - シャッター機構と、
互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、前記シャッター機構に対して、前記光源部が消灯している期間に開成状態に切り換え、前記光源部が点灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部を有する映像表示装置と、
を具備する映像表示システム。 - 映像を表示する表示部と前記表示部を照明する光源部を有する映像表示装置によって表示される互いに異なる複数の映像を、シャッター機構の開閉動作によって分離して提示する映像提示方法であって、
前記表示部で互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する映像制御ステップと、
各サブフレーム期間内に点灯期間を含むように、前記光源部の点灯動作と消灯動作を交互に行なわせるバックライト制御ステップと、
前記光源部が消灯している期間に前記シャッター機構を開成状態に切り換えるとともに、前記光源部が点灯している期間に閉成状態に切り換えるシャッター制御ステップと、
を有する映像提示方法。 - 映像を表示する表示部と前記表示部を照明する光源部を有する映像表示装置によって表示される互いに異なる複数の映像を、シャッター機構の開閉動作によって分離して提示するための処理をコンピューター上で実行するようにコンピューター可読形式で記述されたコンピューター・プログラムであって、前記コンピューターを、
前記表示部で互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示させる映像制御手段、
前記表示部が前記複数の映像の各々を時分割で表示する各サブフレーム期間内に点灯期間を含むように、前記光源部の点灯動作と消灯動作を交互に行なわせるバックライト制御手段、
前記光源部が消灯している期間に前記シャッター機構を開成状態に切り換えるとともに、前記光源部が点灯している期間に閉成状態に切り換えるシャッター制御手段、
として機能させるためのコンピューター・プログラム。 - 互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
各サブフレーム期間内に点灯期間を含むように点灯動作と消灯動作を交互に行ないながら前記表示部を照明する光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構に対し、前記光源部が点灯している期間に開成状態に切り換え、前記光源部が消灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置。 - 画面を複数に分割したブロック毎に、互いに異なる複数の映像をサブフレーム期間毎に切り換えて表示する表示部と、
前記表示部の前記ブロック毎に設けられ、点灯動作と消灯動作を交互に行ないながら照明する複数の光源部と、
前記複数の映像を分離しながら観察するためのシャッター機構に対し、前記複数の光源部のうち少なくとも1つが点灯している期間に開成状態に切り換え、前記の少なくとも1つの光源部が消灯している期間に閉成状態に切り換えるように、開閉タイミングの制御を行なうシャッター制御部と、
を具備する映像表示装置。 - 複数のシャッター機構を有し、
すべてのシャッター機構が閉成状態となる期間に、前記複数の光源部の少なくとも1つが点灯している、
請求項7に記載の映像表示装置。
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CN2011800031678A CN102474651A (zh) | 2010-03-31 | 2011-03-10 | 图像显示装置,图像显示***,图像呈现方法和计算机程序 |
US13/322,275 US20120069164A1 (en) | 2010-03-31 | 2011-03-10 | Image display device, image display system, image presenting method, and computer program |
EP11762531A EP2421277A4 (en) | 2010-03-31 | 2011-03-10 | IMAGE DISPLAY DEVICE, IMAGE DISPLAY SYSTEM, IMAGE PRESENTATION METHOD, AND COMPUTER PROGRAM |
BRPI1105251A BRPI1105251A2 (pt) | 2010-03-31 | 2011-03-10 | aparelho e sistema de exibicao de imagem, e metodo de apresentacao de imagem, e, programa de computador |
KR1020117026926A KR20130001106A (ko) | 2010-03-31 | 2011-03-10 | 영상 표시 장치, 영상 표시 시스템, 영상 제시 방법, 및 컴퓨터·프로그램 |
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WO2011142141A1 (ja) * | 2010-05-13 | 2011-11-17 | パナソニック株式会社 | 表示装置及び映像視聴システム |
JP2015034831A (ja) * | 2011-11-30 | 2015-02-19 | シャープ株式会社 | 立体表示システム |
KR101987243B1 (ko) * | 2012-02-13 | 2019-06-11 | 삼성디스플레이 주식회사 | 표시 장치 및 그 구동 방법 |
TWI447506B (zh) * | 2012-05-17 | 2014-08-01 | Delta Electronics Inc | 影像投影系統及其同步方法 |
CN102968964B (zh) * | 2012-12-05 | 2014-08-06 | 京东方科技集团股份有限公司 | 背光驱动方法及装置、显示装置 |
WO2015097743A1 (ja) * | 2013-12-24 | 2015-07-02 | 株式会社 東芝 | 立体映像表示装置 |
KR102196088B1 (ko) | 2014-02-21 | 2020-12-30 | 삼성디스플레이 주식회사 | 표시 장치 및 그 구동 방법 |
WO2019061632A1 (zh) * | 2017-09-27 | 2019-04-04 | 歌尔科技有限公司 | 头戴显示设备的控制方法、设备和*** |
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EP2421277A4 (en) | 2013-03-27 |
TW201213860A (en) | 2012-04-01 |
JP2011216998A (ja) | 2011-10-27 |
US20120069164A1 (en) | 2012-03-22 |
EP2421277A1 (en) | 2012-02-22 |
BRPI1105251A2 (pt) | 2016-05-03 |
CN102474651A (zh) | 2012-05-23 |
KR20130001106A (ko) | 2013-01-03 |
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