[go: up one dir, main page]

WO2012176683A1 - Dispositif et système d'affichage d'images - Google Patents

Dispositif et système d'affichage d'images Download PDF

Info

Publication number
WO2012176683A1
WO2012176683A1 PCT/JP2012/065234 JP2012065234W WO2012176683A1 WO 2012176683 A1 WO2012176683 A1 WO 2012176683A1 JP 2012065234 W JP2012065234 W JP 2012065234W WO 2012176683 A1 WO2012176683 A1 WO 2012176683A1
Authority
WO
WIPO (PCT)
Prior art keywords
image display
unit
display device
brightness
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/065234
Other languages
English (en)
Japanese (ja)
Inventor
康徳 明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of WO2012176683A1 publication Critical patent/WO2012176683A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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]
    • 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
    • H04N13/366—Image reproducers using viewer tracking
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • 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
    • 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]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • 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
    • 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
    • H04N13/366—Image reproducers using viewer tracking
    • H04N13/383—Image reproducers using viewer tracking for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes

Definitions

  • the present invention relates to an image display device and an image display system, and more particularly to an image display device capable of adjusting the brightness of a display screen and an image display system including the image display device.
  • an image display device such as a computer display or a television
  • a configuration including a liquid crystal display panel and a backlight is known.
  • an image is displayed by controlling the transmission of light by the birefringence and optical rotation of the liquid crystal.
  • the brightness of the backlight can be adjusted so that the brightness is easy to see for the user.
  • Japanese Unexamined Patent Application Publication No. 2006-72255 describes a system including a remote controller and an image display device.
  • the image display device includes a backlight, a liquid crystal display panel, a light receiving sensor, and a signal receiving unit.
  • the light receiving sensor is provided on a frame that supports the liquid crystal display panel.
  • a signal transmission unit and a light receiving sensor are provided.
  • information regarding the amount of light received by the light receiving sensor is transmitted from the signal transmission unit when the tip of the remote controller is operated toward the image display device.
  • the signal transmitted by the signal transmission unit is received by the signal reception unit of the image display device.
  • the output of the backlight is adjusted based on the light amount information received by the signal receiving unit and the light amount information received by the light receiving sensor attached to the frame.
  • the light receiving sensor is provided in each of the frame of the liquid crystal display panel and the remote controller, and receives ambient light.
  • the brightness detected by the light receiving sensor provided on the frame or the light receiving sensor provided on the remote controller is different from the brightness actually observed by the user. For this reason, in the configuration described in Japanese Patent Laid-Open No. 2006-72255, it may not be possible to adjust the brightness to an appropriate level for the user.
  • An object of the present invention is to provide an image display device capable of adjusting display luminance more appropriately based on brightness actually recognized by a user.
  • an image display device capable of acquiring image data and receiving the image data transmitted from a wearable item that can be worn by a user.
  • Unit a display unit, and a luminance control unit.
  • the receiving unit receives image data.
  • the brightness control unit controls the brightness of the image display unit based on the brightness of the image data received by the receiving unit.
  • a light receiving sensor is provided in the frame of the remote controller or the image display device, Compared with the case where the luminance of the image display device is adjusted based on the amount of light received by the sensor, it becomes easier to adjust the luminance to be appropriate for the user.
  • FIG. 1 is a schematic diagram showing a liquid crystal display device of an image display system according to an embodiment of the present invention and an observer observing the liquid crystal display device.
  • FIG. 2 is an external perspective view of the glasses.
  • FIG. 3 is a block diagram of a liquid crystal display device and glasses.
  • FIG. 4 is a diagram illustrating the relationship between adaptation luminance and object luminance.
  • FIG. 5 is a diagram showing the relationship between adaptation luminance and light source output.
  • FIG. 6 is a schematic diagram illustrating a state in which an observer observes the liquid crystal display device and the liquid crystal display device of the image display system according to the second embodiment.
  • FIG. 7 is a block diagram of a liquid crystal display device and glasses according to the second embodiment.
  • FIG. 1 is a schematic diagram showing a liquid crystal display device of an image display system according to an embodiment of the present invention and an observer observing the liquid crystal display device.
  • FIG. 2 is an external perspective view of the glasses.
  • FIG. 3 is a block diagram of
  • FIG. 8 is a diagram schematically illustrating a state in which light is received by the light receiving unit of the glasses.
  • FIG. 9 is a diagram illustrating a calculation range of the light receiving unit.
  • FIG. 10 is a schematic diagram illustrating a liquid crystal display device and an observer observing the liquid crystal display device of the image display system according to the third embodiment.
  • FIG. 11 is a block diagram of a liquid crystal display device and a remote controller according to the third embodiment.
  • FIG. 12 is a block diagram of a liquid crystal display device and glasses according to the third embodiment.
  • FIG. 13 is a diagram illustrating a positional relationship between a pair of infrared sensors and an observer.
  • FIG. 14 is a flowchart showing the brightness control operation.
  • FIG. 15 is a schematic diagram illustrating a liquid crystal display device and an observer observing the liquid crystal display device of the image forming system according to the fourth embodiment.
  • An image display device includes: A receiving unit that receives the data from a wearable that can acquire data representing brightness in the observation direction of the user in a state worn by the user during observation; An image display unit; Based on the data received by the reception unit, a luminance calculation unit that calculates brightness in the observation direction of the user; And a brightness control unit that controls the brightness of the image display unit based on a calculation result by the brightness calculation unit (first configuration).
  • the data representing the brightness in the viewing direction of the user is acquired by the wearing object worn by the user, and the data is received by the receiving unit.
  • the luminance calculation unit calculates the brightness in the observation direction of the user based on the data received by the reception unit, and the luminance of the image display unit is controlled based on the calculation result. That is, the brightness of the image display device is adjusted based on the amount of light received by the light receiving sensor provided in the frame of the remote controller or the image display device by using data acquired by the wearable item worn by the user.
  • the conventional configuration there is an effect that the user can easily adjust the luminance to an appropriate luminance according to the situation actually observed.
  • An image display system includes: An image display system including an image display device and a wearing object worn by a user when observing the image display device,
  • the wearing object is a data acquisition unit that acquires data representing brightness in the observation direction of the user in a state worn by the user during observation of the image display device;
  • the image display device includes: A receiving unit for receiving the data from the wearing article; An image display unit; Based on the data received by the reception unit, a luminance calculation unit that calculates brightness in the observation direction of the user; And a luminance control unit that controls the luminance of the image display unit based on a calculation result by the luminance calculation unit (second configuration).
  • the data representing the brightness in the viewing direction of the user is acquired by the wearing object worn by the user, and the data is received by the receiving unit.
  • the luminance calculation unit calculates the brightness in the observation direction of the user based on the data received by the reception unit, and the luminance of the image display unit is controlled based on the calculation result. That is, the brightness of the image display device is adjusted based on the amount of light received by the light receiving sensor provided in the frame of the remote controller or the image display device by using data acquired by the wearable item worn by the user.
  • the second configuration has an effect that it is easy to adjust the luminance to an appropriate level according to the situation that the user is actually observing.
  • the data acquisition unit includes an image sensor that detects a spatial distribution of light as two-dimensional image data;
  • the luminance calculation unit may be configured to calculate brightness in the observation direction of the user based on luminance data of at least some pixels of the image data (third configuration).
  • the luminance can be adjusted in consideration of the spatial distribution of light, there is an effect that it is easy to adjust the luminance to an appropriate luminance according to the situation that the user is actually observing. Since the area that the user actually observes is a space having a certain extent, the user actually observes by using the luminance data of at least some pixels of the image data obtained therefrom. Control according to the situation becomes possible.
  • the data acquisition unit further includes a wide-angle lens on the light incident side with respect to the image sensor (fourth configuration).
  • the wide angle lens is arranged on the light incident side of the image sensor, a wider range of images can be acquired.
  • the image display device includes: A data selection unit for selecting luminance data of pixels belonging to a predetermined viewing angle range from the image data; It is preferable that the luminance calculation unit is configured to calculate the brightness in the observation direction of the user based on the luminance data selected by the data selection unit (fifth configuration).
  • the brightness of the image display unit is controlled based on the brightness of an image in a range that is highly likely to be visually recognized by the user, it is easy to adjust the brightness to be more appropriate for the user.
  • a wear detecting unit for detecting whether or not the user wears the wearing object It is preferable that the data acquisition unit acquires data representing the brightness in the observation direction of the user after the mounting detection unit detects that the user has mounted the mounted item (sixth configuration). According to this configuration, since the brightness data is acquired after confirming that the user has mounted the mounted object, it is possible to efficiently acquire appropriate image data.
  • the image display device includes: A human detection sensor; A distance detection unit that detects a distance to the person detected by the person detection sensor; When the person detection sensor detects a plurality of persons, the brightness control unit calculates the brightness of the image display device based on the data obtained from the attachments of the plurality of persons, and the calculated brightness It is preferable that the luminance of the image display device is controlled based on the average value (seventh configuration).
  • the image display device is easy to see. It is possible to prevent an increase in the bias.
  • a remote controller for controlling the image display device is An ambient data acquisition unit that acquires data representing the brightness around the remote controller; An image data transmission unit that transmits data acquired by the ambient data acquisition unit to the image display device as data representing brightness in the observation direction of the user; It is preferable that the brightness calculation unit calculates the brightness in the observation direction of the user based on data received from the remote controller (eighth configuration).
  • the brightness data is acquired by the ambient data acquisition unit of the remote controller, and the luminance calculation unit uses the data acquired by the remote controller as data representing the brightness in the observation direction of the user. Perform the operation. Thereby, for example, even when the user is not wearing a wearing object, the luminance can be adjusted based on the data obtained from the remote controller.
  • the image display device may be a device capable of displaying a stereoscopic image on the image display unit (9th configuration).
  • the wearing object may be glasses (tenth configuration).
  • FIG. 1 is a schematic diagram illustrating a state in which an observer observes the image display system 1.
  • the image display system 1 mainly includes a liquid crystal display device 2 and glasses 3.
  • Arrows A to E indicate light. Arrows A and E are light that is not visually recognized by the observer. Arrows B to D are light visually recognized by an observer. An arrow C is light traveling from the liquid crystal display device 2 toward the observer. Arrows B and D are lights other than the light from the liquid crystal display device 2 visually recognized by the observer.
  • the liquid crystal display device 2 includes a liquid crystal display panel 21, a frame 22, and a signal receiving unit 23.
  • the liquid crystal display panel 21 displays an image on the surface by appropriately transmitting light.
  • the frame 22 supports the liquid crystal display panel 21.
  • the frame 22 has a back surface portion that covers the back surface of the liquid crystal display panel 21 and a front surface portion provided around the liquid crystal display panel 21.
  • the frame 22 is made of resin, for example.
  • buttons 221, etc. for operating speakers and channels are arranged on the frame 22.
  • the signal receiving unit 23 is a part capable of receiving a signal from the glasses 3.
  • the signal receiving unit 23 is provided in the frame 22.
  • the signal receiving unit 23 is disposed below the liquid crystal display panel 21, but is not limited to this position.
  • the eyeglasses 3 are worn by an observer of the liquid crystal display device 2.
  • the kind of glasses 3 is arbitrary.
  • glasses 3 for example, glasses having a function of assisting the visual acuity of an observer of the liquid crystal display device 2 or reducing fatigue when viewing the liquid crystal display device 2 can be used.
  • FIG. 2 is an external view of the glasses 3.
  • the glasses 3 include a glasses frame 31, a lens 32, and a light receiving unit 33.
  • the light receiving unit 33 includes, for example, a CCD type image sensor or a CMOS type image sensor, receives light in a direction facing the observer wearing the glasses 3, and outputs it as two-dimensional digital image data.
  • the light receiving unit 33 is attached to the glasses frame 31. As shown in FIG. 1, the light receiving unit 33 receives light indicated by arrows A to E when the observer is looking at the liquid crystal display panel 21 of the liquid crystal display device 2.
  • FIG. 3 is a block diagram showing a functional configuration of the liquid crystal display device 2 and the glasses 3. The configuration of the liquid crystal display device 2 and the glasses 3 will be described with reference to FIG.
  • the liquid crystal display device 2 includes a backlight 24 and a control unit 25 in addition to the liquid crystal display panel 21 and the signal receiving unit 23.
  • the backlight 24 irradiates the liquid crystal display panel 21 with light.
  • the backlight 24 has a plurality of light sources and a light guide plate.
  • the backlight 24 is disposed on the back surface of the liquid crystal display panel 21 between the front surface portion and the back surface portion of the frame 22.
  • the control unit 25 is a part that controls the functional units of the liquid crystal display device 2 including the liquid crystal display panel 21 and the backlight 24.
  • the control unit 25 includes a storage unit 251, a luminance calculation unit 252, a light source output calculation unit 253, and a light source output control unit (luminance control unit) 254.
  • the luminance calculation unit 252, the light source output calculation unit 253, and the light source output control unit 254 are not necessarily implemented as hardware.
  • the control unit 25 includes a processor, and the processor executes the program stored in the storage unit 251 so that the functions as the luminance calculation unit 252, the light source output calculation unit 253, and the light source output control unit 254 are provided. It may be embodied.
  • the storage unit 251 includes a ROM and a RAM, and stores various programs and data in addition to the program that controls the operation of the control unit 25 as described above.
  • the storage unit 251 stores signal data from the signal receiving unit 23.
  • the luminance calculation unit 252 calculates the brightness of the image data received by the signal receiving unit 23 from the glasses 3.
  • the light source output calculation unit 253 calculates an output value for appropriately controlling the luminance of the backlight 24 based on the calculation result of the luminance calculation unit 252.
  • the light source output control unit 254 controls the luminance of the backlight 24 based on the value calculated by the light source output calculation unit 253.
  • the glasses 3 include a light receiving unit 33 and a signal transmission unit 34 as functional blocks.
  • the light receiving unit 33 includes an image sensor 331 (image data acquisition unit) and an A / D conversion unit 332.
  • the image sensor 33 for example, a CCD image sensor or a CMOS image sensor can be used.
  • a wide-angle lens may be disposed on the surface of the image sensor 331. In order to acquire a wider range of image data, it is preferable to use a lens called an “super wide-angle lens”.
  • image data (two-dimensional data) representing the spatial distribution of light is acquired using the image sensor 331.
  • the brightness is not simply the image sensor but the brightness. It is possible to use an optical sensor that only acquires the level.
  • the image sensor 331 has a plurality of light detection elements arranged two-dimensionally.
  • each light detection element detects light and converts it into an electric signal.
  • the electrical signal obtained here is sent to the A / D converter 332 for each pixel (photodetection element).
  • the A / D conversion unit 332 converts the electrical signal sent from the image sensor 331 into a digital signal, and outputs it to the signal transmission unit 34 as image data.
  • the signal transmission unit 34 transmits the image data to the liquid crystal display device 2.
  • data transmission / reception between the glasses 3 and the liquid crystal display device 2 is preferably performed by wireless communication. There is no particular limitation on the wireless communication system.
  • the image data transmitted from the signal transmission unit 34 of the glasses 3 is received by the signal reception unit 23 of the liquid crystal display device 2 and stored in the storage unit 251. Then, the luminance calculation unit 252 calculates the average luminance of the image data. In the present embodiment, the luminance calculation unit 252 averages the luminance (light reception intensity) of each pixel of the image data received by the signal reception unit 23, and calculates the adaptation luminance Ys. Even when an object having the same luminance is observed, the luminance of the object is felt differently by human eyes according to the brightness (luminance) around the object.
  • the adaptation luminance Ys means a luminance that is visually recognized when an observer observes the liquid crystal display device 2 under the influence of the brightness around the place where the liquid crystal display device 2 is disposed. .
  • the human eye adapts to the light intensity in the visual field range, and even when looking at an object having the same luminance, the human eye feels different brightness (luminance) depending on the degree of adaptation (luminance).
  • the averaging process here may be a weighted average or a weighted averaging process.
  • the light source output calculation unit 253 calculates the luminance (light source output) of the backlight 24 using the adaptation luminance Ys obtained by the luminance calculation unit 252.
  • the light source output calculation unit 253 B kY 0.31 - (mYs 0.31 + L) ⁇ (1) Is used.
  • This expression (1) is a relational expression proposed by the study of Bodmann and Haubner et al.
  • Y is the object luminance (cd / m 2 )
  • Ys is the adaptation luminance (cd / m 2 )
  • k, m, and L are constants. Note that the above-described object brightness Y corresponds to the brightness of the backlight 24 that illuminates the liquid crystal display panel 21 in the present embodiment.
  • the human eye adapts to light within the field of view.
  • the constants k, m, and L are set based on human sensory characteristics that “even if different observers see the same object, each observer feels different brightness depending on the degree of adaptation of the observer”. Including the above formula (1) is defined.
  • the above equation (1) indicates that if the object brightness Y is controlled according to the adaptation brightness Ys so that the brightness sense value B is constant, the observer's observational vision is not impaired.
  • the adaptation luminance Ys and the object luminance Y change so as to follow each line shown in FIG. 4 (that is, the value of B is kept constant). If the adaptation brightness Ys and the object brightness Y change), the visual characteristics of the observer are not impaired. It can be seen from FIG. 4 that the rate of change of the object brightness Y with respect to the adaptation brightness Ys is substantially constant even if the brightness sense value B is different. As described above, the object luminance Y is the luminance of the backlight that illuminates the liquid crystal display panel 21. Therefore, when the change rate of the object luminance Y with respect to the adaptation luminance Ys shown in FIG.
  • the relationship between the adaptation luminance Ys and the light source output shown in FIG. 5 is stored in a memory (not shown) in the light source output calculation unit 253.
  • the light source output calculation unit 253 receives the value of the adaptation luminance Ys calculated by the luminance calculation unit 252, the light source output calculation unit 253 refers to the memory and determines the light source output according to the input value of the adaptation luminance Ys.
  • the light source output data determined by the light source output calculation unit 253 is sent to the light source output control unit 254, and the luminance of the backlight 24 is adjusted based on the light source output data received by the light source output control unit 254.
  • image data is acquired by the image sensor 331 of the glasses 3 worn by the observer, and the luminance calculation unit 252 obtains the adaptive luminance Ys from the image data. Then, the light source output calculation unit 253 obtains the light source output according to the adaptation luminance Ys, and the luminance of the backlight 24 is controlled according to the obtained value.
  • the liquid crystal display device 2 is actually observed.
  • the brightness can be adjusted based on the user's feeling. This is because the image data obtained by the image sensor 331 of the glasses 3 generally includes an image in a range actually viewed by the observer. For this reason, it can adjust to the brightness
  • the image display system 12 according to the second embodiment is different from the image display system according to the first embodiment in the configuration of the control unit of the liquid crystal display device. More specifically, in the first embodiment, the luminance is calculated using all the pixels of the image data obtained by the image sensor 331. On the other hand, the present embodiment is different in that a range visually recognized by the user is set in advance, and brightness is calculated only for image data within the range.
  • the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.
  • FIG. 6 is a schematic diagram showing a state in which an observer is observing the image display system 12 according to the second embodiment.
  • the range indicated by a broken line in FIG. 6 is a range visually recognized by an observer. That is, among the arrows A to E shown in FIG. 6, the range including the light of the arrows B to D is a range visually recognized by the observer. On the other hand, arrows A and E are light that enters the image sensor 331 of the glasses 3 but is outside the range visually recognized by the observer.
  • FIG. 7 is a block diagram showing a liquid crystal display device 62 and glasses 3 according to the second embodiment.
  • the control unit 37 is a part that controls each functional unit such as the liquid crystal display panel 21 and the backlight 24.
  • the control unit 37 includes a storage unit 371, a visual field luminance calculation unit 372, a light source output calculation unit 373, a light source output control unit 374, and a calculation range selection unit 375. Note that the visual field luminance calculation unit 372, the light source output calculation unit 373, the light source output control unit 374, and the calculation range selection unit 375 are not necessarily implemented as hardware.
  • control unit 37 includes a processor, and when the processor executes a program stored in the storage unit 351, the visual field luminance calculation unit 372, the light source output calculation unit 373, the light source output control unit 374, and the calculation range selection unit A mode in which the functions of 375 are implemented may be possible.
  • the storage unit 371 includes a ROM and a RAM, and stores various programs and data in addition to the program that controls the operation of the control unit 37 as described above.
  • the storage unit 371 stores the signal data from the signal receiving unit 23.
  • the visual field luminance calculation unit 372 calculates the brightness of the image data received by the signal receiving unit 23 from the glasses 3. Note that the calculation range selection unit 375 selects a range that is subject to brightness calculation by the visual field luminance calculation unit 372 among all the pixels of the image data.
  • the light source output calculation unit 373 calculates an output value for appropriately controlling the luminance of the backlight 24 based on the calculation result of the visual field luminance calculation unit 372.
  • the light source output control unit 374 controls the luminance of the backlight 24 based on the value calculated by the light source output calculation unit 373.
  • the light receiving unit 33 of the glasses 3 has a super wide angle lens 333 on the light incident side to the image sensor 331. For this reason, the light transmitted through the super wide-angle lens 333 is received by the image sensor 331.
  • the super wide angle lens 333 is a lens having a shorter focal length than the wide angle lens.
  • FIG. 8 is a diagram schematically showing a state in which light is received by the light receiving unit 33 of the glasses 3.
  • the super wide-angle lens 333 (not shown in FIG. 8) is arranged in a direction in which the optical axis is orthogonal to the frame surface of the spectacle frame 31 of the spectacles 3. Therefore, the super wide-angle lens 333 receives light from the directions indicated by arrows A to E in FIG.
  • the light receiving part 33 is the origin ⁇
  • the left and right direction of the observer wearing the glasses 3 is the X axis
  • the front and rear direction is the Y axis (the optical axis of the super wide angle lens 333).
  • the vertical direction is the Z axis.
  • the angle from the Y-axis is ⁇ and the angle from the Z-axis is ⁇
  • the light ray r enters the super wide-angle lens 333 with an azimuth angle ⁇ r and a polar angle ⁇ r.
  • FIG. 9 is a diagram illustrating a calculation range of the light receiving unit 33.
  • the calculation range selection unit 375 selects the range of light recognized by the observer from the light observed by the observer through the glasses 3. Specifically, the calculation range selection unit 375 selects a predetermined angle range around the direction in which the observer is facing.
  • the predetermined angle range is, for example, a range of a horizontal angle of ⁇ 60 degrees and a vertical angle of ⁇ 30 degrees.
  • the selected range is a range of azimuth angle ⁇ 1 ( ⁇ 60 ° from Y axis) on image sensor 331 shown in FIG. 9, and polar angle ⁇ 2 (60 °) and polar angle ⁇ 4 (120 °). ) (A hatched portion in FIG. 9).
  • the calculation range selection unit 375 can be visually recognized by an observer wearing the glasses 3. Only the brightness of the range is detected. For example, out of the light indicated by arrows A to E in FIG. 6, only the brightness information based on the light indicated by arrows B to D can be set as a calculation target in the visual field luminance calculation unit 372.
  • the visual field luminance calculation unit 372 calculates the adaptation luminance Ys by performing the averaging process only on the pixels within the range selected by the calculation range selection unit 375.
  • the calculation of the adaptation luminance Ys by the visual field luminance calculation unit 372 is the same as the processing by the luminance calculation unit 252 in the first embodiment, and thus detailed description thereof is omitted.
  • the processing of the light source output calculation unit 373 and the light source output control unit 374 is the same as that of the light source output calculation unit 253 and the light source output control unit 254 in the first embodiment.
  • the configuration in which the range for obtaining the luminance is selected by the calculation process of the calculation range selection unit 375 of the control unit 37 is exemplified.
  • the image forming system 12 uses the function of a lens provided as an ultra-wide-angle lens 333 on the incident side of the image sensor 331, so that only light in a range that is viewed by an observer (range indicated by arrows BD in the example of FIG. You may make it inject into the image sensor 331.
  • FIG. This can be realized, for example, by adjusting the refractive index of the super wide-angle lens 333.
  • the image forming system 12 when calculation is performed using information on all pixels of the image sensor 331, calculation is performed on light in a range that is actually visually recognized by the observer. As compared with the above, it is possible to further adjust the luminance to be appropriate for the observer.
  • the image display system 61 according to the third embodiment differs from the image display system 11 according to the first embodiment in that the remote controller 4 and a configuration for detecting whether the observer wears the glasses 63 are included. Yes.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
  • FIG. 10 is a diagram showing an observer observing the image display system 61 and the liquid crystal display device 62 according to the third embodiment.
  • the liquid crystal display device 62 includes a liquid crystal display panel 21, a frame 22, a signal receiving unit 23, an infrared LED 621, and a person detection sensor 622.
  • the infrared LED 621 emits an infrared signal.
  • a pair of infrared LEDs 621 are attached to the frame 22.
  • the infrared LEDs 621 are arranged on both sides of the liquid crystal display panel 21 in the horizontal direction.
  • Person detection sensor 622 detects whether or not there is a person in front of the liquid crystal display device 62.
  • the person detection sensor 622 is provided on the frame 22 below the liquid crystal display panel 21.
  • attachment positions of the infrared LED 621 and the person detection sensor 622 are not limited to the positions described above.
  • the remote controller 4 operates the liquid crystal display device 62 at a location away from the liquid crystal display device 2.
  • the remote controller 4 includes a housing 41, a plurality of buttons 42, a light receiving unit 43, and a signal transmission unit 44.
  • the light receiving unit 43 is provided at one end of the housing 41.
  • the light receiving unit 43 calculates the brightness in the direction in which one end of the housing 41 is facing. Since the configuration of the light receiving unit 43 is the same as the configuration of the light receiving unit 33, the description thereof is omitted.
  • the signal transmission unit 44 transmits the signal converted by the A / D conversion unit 332 of the light receiving unit 43 to the signal reception unit 23 of the liquid crystal display device 62.
  • the signal transmission unit 44 transmits the signal received by the light receiving unit 43 to the light reception control unit 45.
  • FIG. 11 is a block diagram showing a functional relationship between the liquid crystal display device 62 and the remote controller 4.
  • the liquid crystal display device 62 includes a liquid crystal display panel 21, a signal receiving unit 23, a backlight 24, a control unit 25, an infrared LED 621, and a person detection sensor 622.
  • the remote controller 4 has a light receiving control unit 45 in addition to the housing 41 and the plurality of buttons 42.
  • the light reception control unit 45 When receiving an instruction from the signal transmission unit 44, the light reception control unit 45 transmits a control signal so that the light reception unit 43 receives an image.
  • FIG. 12 is a block diagram showing a functional relationship between the liquid crystal display device 62 and the glasses 63.
  • the glasses 63 are worn by an observer of the liquid crystal display device 62.
  • the glasses 63 include a light receiving unit 632, a glasses wearing detection unit 631, a light reception control unit 633, and a signal transmission unit 34 as functional blocks.
  • the light receiving unit 632 receives light in the direction in which the observer wearing the glasses 63 is facing.
  • the light receiving unit 632 can receive an infrared signal emitted by the pair of infrared LEDs 621.
  • the light receiving unit 632 is attached to the glasses frame 31.
  • the light receiving unit 632 includes an image sensor 636 and an A / D conversion unit 637.
  • the image sensor 636 and the A / D conversion unit 637 have the same configuration as the image sensor 331 and the A / D conversion unit 332.
  • the glasses wearing detector 631 is a portion that detects whether or not the observer of the liquid crystal display panel 21 is wearing the glasses 63. Specifically, when the light receiving unit 632 receives an infrared signal emitted from the infrared LED 621, the glasses wearing detection unit 631 detects the distance between the liquid crystal display device 62 and the observer and the observer's view of the liquid crystal display device 62. Try to calculate the viewing angle. The glasses wearing detection unit 631 determines that the viewer is wearing the glasses 63 when the distance between the liquid crystal display device 62 and the viewer and the viewing angle of the viewer with respect to the liquid crystal display device 62 can be calculated. to decide.
  • the viewing angle means an angle at which the observer observes the liquid crystal display panel 21. That is, the viewing angle means an angle between a line segment orthogonal to the liquid crystal display panel 21 and a line segment connecting the center of the liquid crystal display device 62 and the center of the observer.
  • FIG. 13 is a diagram showing the positional relationship between a pair of infrared LEDs 621 and an observer.
  • a and B in FIG. 13 are the positions of the infrared LEDs 621, and C is the position of the observer.
  • L indicates the distance between the two infrared LEDs 621.
  • ⁇ and ⁇ are calculated from the incident angle of the infrared signal when the light receiving unit 632 receives the infrared signal emitted from the infrared LED 621.
  • the distance L between the pair of infrared LEDs 621 is measured in advance and stored in a memory (not shown) provided in the glasses 63.
  • the angle of the infrared LED 621 with respect to the light receiving unit 632 is detected from the image data received by the light receiving unit 632.
  • the distance D and the viewing angle ⁇ are calculated from the above calculation formula.
  • the light reception control unit 633 transmits an instruction signal for starting light reception by the light receiving unit 632 when the glasses wearing detection unit 631 detects that the observer is wearing the glasses 63.
  • the signal transmission unit 34 transmits the image data converted by the A / D conversion unit 637 to the signal reception unit 23 of the liquid crystal display device 62.
  • FIG. 14 is a flowchart showing the brightness control operation. Next, the operation for controlling the luminance will be described with reference to the flowchart of FIG.
  • the light reception control unit 633 instructs the light reception unit 632 to start detection.
  • the light receiving unit 632 receives light from the direction in which the observer is facing, that is, light from the direction in which the light receiving unit 632 of the glasses 63 is facing (S4).
  • the light received by the image sensor 636 of the glasses 63 is converted into an electric signal by the A / D converter 637 and transmitted to the signal transmitter 34 as image data. Thereafter, the image data is transmitted from the signal transmission unit 34 toward the liquid crystal display device 62.
  • the light reception control unit 45 instructs the light reception unit 43 to start detection.
  • the light receiving unit 43 receives light from the direction in which the tip of the remote controller 4 is directed, that is, the direction in which the liquid crystal display device 62 is disposed (S5).
  • the light received by the light receiving unit 43 is converted into an electrical signal by the A / D conversion unit 332 and transmitted to the signal transmission unit 44. Thereafter, an image signal is transmitted from the signal transmission unit 44 toward the liquid crystal display device 62.
  • the image signal transmitted from the signal transmission unit 34 or the signal transmission unit 44 is stored in the storage unit 251. Then, the luminance calculation unit 252 calculates the luminance. Thereafter, the output of the backlight 24 is determined from the relationship shown in FIGS. 4 and 5 based on the luminance calculated by the luminance calculation unit 252. Then, the backlight 24 is controlled to the determined output value (S6).
  • the luminance of the backlight 24 is equal to the luminance value obtained by averaging the luminance values (output values of the backlight 24) calculated for each observer. Be controlled.
  • the output value of the backlight 24 may be determined based on the brightness information obtained from the glasses 63 worn by the observer at the closest distance or the farthest distance.
  • the brightness of the liquid crystal display device 2 can be adjusted via the light receiving unit 43 provided in the remote controller 4 even when the glasses 63 are not worn. it can. For this reason, even when the liquid crystal display device 2 is observed without wearing the glasses 63, it is easy to adjust the luminance appropriately.
  • FIG. 15 is a schematic diagram showing an image display system 13 according to the fourth embodiment.
  • the image display system 13 according to the fourth embodiment is different from the image display system according to the first embodiment in a liquid crystal display device and glasses. More specifically, the liquid crystal display device 9 according to the fourth embodiment can display a stereoscopic image, and the glasses 7 are glasses for visually recognizing the stereoscopic image. That is, the image display system 13 of this embodiment is a glasses-type three-dimensional image display system.
  • the glasses 7 are the same as the configurations described in the first to third embodiments, except that they have a configuration and a function for visually recognizing a stereoscopic image.
  • the liquid crystal display device 9 is also described in the first to third embodiments, except that the liquid crystal display device 9 also has a configuration and a function for displaying a left-eye image and a right-eye image for forming a stereoscopic image.
  • the configuration is the same.
  • this embodiment can be applied to arbitrary three-dimensional image display systems.
  • a three-dimensional image display system there is a method in which a left-eye image and a right-eye image displayed simultaneously are spatially separated by glasses and recognized by the left eye and the right eye.
  • the left-eye image and the right-eye image, which are displayed alternately are alternately viewed by the left and right eyes using shutter glasses that are alternately opened and closed in synchronization with the display. There is a method to make it.
  • a left-eye image and a right-eye image are alternately displayed every other scanning line of the liquid crystal display device 9.
  • the left-eye image is displayed on the even-numbered scanning lines
  • the right-eye image is displayed on the odd-numbered scanning lines.
  • the left-eye image and the right-eye image are polarized and displayed.
  • the left eye image is guided to the left eye and the right eye image is guided to the right eye, thereby displaying a three-dimensional image to the observer.
  • the liquid crystal display device 9 can display the right-eye image and the left-eye image on the display panel 91 at a predetermined cycle (for example, every 1/120 second).
  • the glasses 7 allow the right-eye image displayed by the stereoscopic image display device 6 to be observed by the observer's right eye and the left-eye image by the observer's left eye.
  • the glasses 7 are provided with liquid crystal shutters for the lenses of both eyes.
  • the right-eye image is displayed on the display panel 91
  • the right-eye shutter of the glasses 7 is opened, and the left-eye shutter is closed.
  • the left-eye shutter of the glasses 7 is opened, and the right-eye shutter is closed.
  • the brightness of the observer's visual field range is detected by the image sensor provided in the glasses, and the backlight 24 is controlled according to the detected brightness.
  • the brightness is adjusted.
  • luminance of a liquid crystal display panel can be adjusted more appropriately based on the brightness which an observer actually recognizes.
  • the glasses are used as the attachment, but the attachment of the present invention is not limited to this.
  • any wearing object that an observer may wear on the head or face can be used instead of the glasses.
  • whether the eyeglasses are worn is detected by calculating the position of the observer from the infrared signals from the pair of infrared sensors 621.
  • the present invention is not limited to this. It may be a method.
  • a button or the like may be arranged on the frame of the glasses, and the wearing of the glasses may be detected by pressing the button with an ear.
  • the luminance is controlled so that the average luminance is optimum for each observer.
  • the present invention is not limited to this.
  • the brightness may be controlled to be most appropriate for an observer who is closest to the liquid crystal display device and has the smallest viewing angle. Further, for example, in the present description, the brightness may be controlled to be most appropriate for an observer who is farthest from the liquid crystal display device and has the largest viewing angle.
  • the configuration in which the liquid crystal display device is provided as the image display device and the brightness of the display is adjusted by controlling the light source output of the backlight 24 is exemplified.
  • the image display device is not limited to a liquid crystal display device, and the present invention can be applied to any display device.
  • a method for adjusting the display brightness a method for adjusting the gradation of data to be displayed can be employed in addition to the method for controlling the output of the backlight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention fournit un dispositif d'affichage d'images permettant de réguler la luminance d'affichage de manière plus adéquate, sur la base de la luminosité effectivement perçue par l'utilisateur. Un dispositif d'affichage à cristaux liquides (2) permet de recevoir des données d'images envoyées à partir de lunettes (3) portées par un observateur, et capables d'envoyer des données d'images de la direction dans laquelle l'observateur est orienté. Le dispositif d'affichage à cristaux liquides (2) est équipé : d'une unité de réception de signaux (26) qui reçoit les données d'images; d'un panneau à cristaux liquides (21) capable d'afficher des images; et d'une unité de commande de sortie de source lumineuse (274) qui commande la luminance d'un rétroéclairage appartenant au panneau à cristaux liquides (21), sur la base des données d'images reçues à l'aide de l'unité de réception de signaux (26).
PCT/JP2012/065234 2011-06-20 2012-06-14 Dispositif et système d'affichage d'images Ceased WO2012176683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011136806A JP2014160097A (ja) 2011-06-20 2011-06-20 画像表示装置および画像表示システム
JP2011-136806 2011-06-20

Publications (1)

Publication Number Publication Date
WO2012176683A1 true WO2012176683A1 (fr) 2012-12-27

Family

ID=47422522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/065234 Ceased WO2012176683A1 (fr) 2011-06-20 2012-06-14 Dispositif et système d'affichage d'images

Country Status (2)

Country Link
JP (1) JP2014160097A (fr)
WO (1) WO2012176683A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9430970B2 (en) * 2014-11-04 2016-08-30 Innolux Corporation 3D image display device
JP6243866B2 (ja) * 2015-03-20 2017-12-06 Kddi株式会社 携帯端末、発光制御方法及びプログラム
JP7312599B2 (ja) * 2019-04-24 2023-07-21 セコム株式会社 監視表示装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006196995A (ja) * 2005-01-11 2006-07-27 Matsushita Electric Ind Co Ltd ３次元めがね視聴検知
JP2007101618A (ja) * 2005-09-30 2007-04-19 Konica Minolta Photo Imaging Inc 表示装置
WO2011061975A1 (fr) * 2009-11-19 2011-05-26 シャープ株式会社 Système d'affichage d'image

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006196995A (ja) * 2005-01-11 2006-07-27 Matsushita Electric Ind Co Ltd ３次元めがね視聴検知
JP2007101618A (ja) * 2005-09-30 2007-04-19 Konica Minolta Photo Imaging Inc 表示装置
WO2011061975A1 (fr) * 2009-11-19 2011-05-26 シャープ株式会社 Système d'affichage d'image

Also Published As

Publication number Publication date
JP2014160097A (ja) 2014-09-04

Similar Documents

Publication Publication Date Title
JP6337418B2 (ja) 頭部装着型表示装置および頭部装着型表示装置の制御方法
WO2011061975A1 (fr) Système d'affichage d'image
US11110027B2 (en) Vision training device for improving fusional vergence
JPWO2014024649A1 (ja) 画像表示装置および画像表示方法
KR20120129134A (ko) 헤드 마운트 디스플레이 장치의 이미지 표시 제어 장치 및 방법
JPWO2015198477A1 (ja) 視線検知装置
US9846305B2 (en) Head mounted display, method for controlling head mounted display, and computer program
US20160116741A1 (en) Display apparatus and method for controlling display apparatus
KR101650706B1 (ko) 웨어러블 디스플레이장치
JP2011209805A (ja) 映像表示装置
KR101203921B1 (ko) 안구 추적과 위치 기반 서비스를 이용한 정보 제공 장치
US20120099195A1 (en) Eyewear, three-dimensional image display system employing the same, and method of allowing viewing of image
CN102291588A (zh) 立体显示的远程用户控制方法以及其设备
US10042171B2 (en) Head mounted display device, control method for head mounted display device, and computer program
JP2014103585A (ja) 立体画像表示装置
JP7118650B2 (ja) 表示装置
US20120320038A1 (en) Three-dimensional image processing apparatus, method for processing three-dimensional image, display apparatus, and computer program
JP2018054976A (ja) 頭部搭載型表示装置及び頭部搭載型表示装置の表示制御方法
WO2012176683A1 (fr) Dispositif et système d'affichage d'images
US12393027B2 (en) Head-mountable display apparatus and methods
JP5909849B2 (ja) 頭部装着型表示装置および頭部装着型表示装置の制御方法
JP6550734B2 (ja) 頭部装着型表示装置、頭部装着型表示装置の制御方法、および、コンピュータープログラム
JPH11155154A (ja) 立体映像処理装置
CN105812779B (zh) 一种可切换场景源的头戴式内窥镜3d显示系统
KR100751290B1 (ko) 헤드 마운티드 디스플레이용 영상 시스템

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12801946

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12801946

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP