WO2011155228A1 - Dispositif d'affichage d'image - Google Patents

Dispositif d'affichage d'image Download PDF

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Publication number
WO2011155228A1
WO2011155228A1 PCT/JP2011/050988 JP2011050988W WO2011155228A1 WO 2011155228 A1 WO2011155228 A1 WO 2011155228A1 JP 2011050988 W JP2011050988 W JP 2011050988W WO 2011155228 A1 WO2011155228 A1 WO 2011155228A1
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WIPO (PCT)
Prior art keywords
image
display
illuminance
unit
improved
Prior art date
Application number
PCT/JP2011/050988
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English (en)
Japanese (ja)
Inventor
寿夫 田中
Original Assignee
富士通テン株式会社
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Publication date
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Publication of WO2011155228A1 publication Critical patent/WO2011155228A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon 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
    • G09G3/20—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/363—Graphics controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • 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
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/2803—Display of gradations

Definitions

  • the present invention relates to an image display device, and in particular, an image display capable of improving the visibility of a display image with a simple process while suppressing an increase in power consumption when the illuminance of a display unit increases. Relates to the device.
  • an image display device that includes an illuminance sensor that detects the illuminance of the display unit and improves the visibility of the display image by increasing the luminance of the light source of the display unit according to the increase in illuminance detected by the illuminance sensor. It has been devised (for example, see Patent Document 1).
  • Patent Document 1 has a problem that power consumption increases because it is necessary to increase the luminance of the light source of the display unit each time the illuminance detected by the illuminance sensor increases. .
  • the image processing of the display image is performed on the original image of the display image according to the increase of the illuminance of the display unit.
  • the present invention has been made to solve the above-described problems caused by the prior art, and when the illuminance of the display unit increases, the display image can be visually recognized by a simple process while suppressing an increase in power consumption.
  • An object of the present invention is to provide an image display device capable of improving the performance.
  • the present invention provides an image display device that displays an image on a display unit, and an illuminance detection unit that detects the illuminance of external light that affects the display unit;
  • An improved image generating unit that generates an improved image with improved visibility from the original image, and a display image is generated by combining the original image and the improved image at a combination ratio according to the illuminance detected by the illuminance detecting unit.
  • a display image generating means that generates an improved image with improved visibility from the original image, and a display image is generated by combining the original image and the improved image at a combination ratio according to the illuminance detected by the illuminance detecting unit.
  • the original image and the improved image are synthesized at a synthesis ratio corresponding to the illuminance of outside light that affects the display unit, thereby improving the visibility according to the illuminance of the display unit.
  • Display images can be generated.
  • the image display device according to the present invention does not require a memory for storing parameters for image processing for each illuminance, and does not need to read out the parameters for each illuminance from the memory and rewrite the parameters of the image processing unit. Since it is not necessary to temporarily stop image processing for rewriting parameters, the processing speed can be improved. Therefore, according to the image display device of the present invention, when the illuminance of the display unit increases, the visibility of the display image can be improved with a simple process while suppressing an increase in power consumption. Play.
  • FIG. 1 is an explanatory diagram showing an outline of an image display method according to the present invention.
  • FIG. 2 is a block diagram illustrating the configuration of the image display apparatus according to the present embodiment.
  • FIG. 3 is a diagram illustrating an example of the synthesis ratio information according to the present embodiment.
  • FIG. 4 is a flowchart illustrating processing executed by the image display apparatus according to the present embodiment.
  • FIG. 5 is a diagram illustrating an example in which only corresponding partial regions of the original image and the improved image are synthesized.
  • FIG. 6 is a diagram illustrating an example of synthesis ratio information provided for each input system of image signals.
  • FIG. 7 is a diagram illustrating an example of the composition ratio information provided for each direction in which the display image is visually recognized.
  • FIG. 1 is an explanatory diagram showing an outline of an image display method according to the present invention.
  • FIG. 2 is a block diagram illustrating the configuration of the image display apparatus according to the present embodiment.
  • FIG. 3 is a diagram illustrating an example of
  • FIG. 8 is a diagram illustrating the operation of the image display apparatus when a plurality of illuminance sensors are arranged and a plurality of illuminance sensors are provided.
  • FIG. 9 is a diagram illustrating a composition ratio correction process.
  • FIG. 10 is a diagram illustrating an example of synthesis ratio information in which a predetermined width is provided for the illuminance associated with the synthesis ratio of the original image in the display image.
  • FIG. 1 is a diagram showing an outline of an image display method according to the present invention.
  • generated from the image signal is demonstrated.
  • the image display method generates an original image of a display image from an image signal, and generates an improved image with improved visibility by image processing from the original image.
  • the image display method according to the present invention improves the visibility according to the illuminance of the display unit by synthesizing the original image and the improved image at a synthesis ratio corresponding to the illuminance of external light that affects the display unit.
  • the displayed image is generated.
  • each of the divided areas 103 obtained by dividing the display area 102 of the display unit 100 into a plurality of parts (here, four parts) is provided.
  • an illuminance sensor 101 is provided.
  • the illuminance sensor 101 is provided at each of the center positions on the four sides of the frame 104 that surrounds the rectangular display region 102 in a frame shape.
  • the illuminance sensor 101 detects the detected illuminance as the illuminance of each corresponding divided region 103.
  • the illuminance distribution in the display area 102 can be determined, and the illuminance of each divided area 103 can be detected individually.
  • an original image of the display image is generated from the image signal as shown in FIG.
  • the original image generated at this time is an image that faithfully reproduces the luminance information and color information for each pixel included in the image signal.
  • an improved image with improved visibility by image processing is generated from the original image in parallel with the generation of the original image.
  • an improved image in which the visibility when the illuminance of the display unit 100 is greater than or equal to a predetermined threshold is improved by image processing is generated from the original image.
  • the predetermined threshold value (hereinafter referred to as “upper limit value”) regarding the illuminance of the display unit 100 assumed here is expected to be detected by the illuminance sensor 101 when direct sunlight is inserted into the display unit 100, for example. Illuminance.
  • the predetermined threshold does not indicate a specific illuminance value but also includes an illuminance range that is assumed to be difficult for humans to see, such as when direct sunlight is inserted.
  • image processing that improves the visibility when the illuminance of the display unit 100 is extremely increased is performed on the original image regardless of the illuminance change of the display unit 100. By doing so, an improved image is generated.
  • the composite ratio of the improved image in the display image is increased while the composite ratio of the original image in the display image is decreased as the illuminance increases.
  • a display image generated by combining the original image and the improved image is output to the display unit 100 as shown in FIG.
  • the composite ratio of the improved image in the display image can be increased.
  • a display image with improved can be generated.
  • the illuminance of the divided area obtained by dividing the display area 102 can be detected individually, the visibility can be improved for each divided area 103.
  • image processing corresponding to the illuminance (predetermined upper limit value) of the display unit 100 is performed on the original image only when an improved image is generated.
  • the image display method according to the present invention when the illuminance of the display unit 100 increases, it is not necessary to perform different image processing on the original image according to the illuminance of the display unit 100, so that the display is performed with simple processing. The visibility of the image can be improved.
  • the image display method according to the present invention it is less necessary to increase the luminance of the light source of the display unit 100 each time the illuminance of the display unit 100 increases, and the visibility of the display image can be improved with low power consumption. it can.
  • the combination ratio information in which the illuminance of the display unit 100 is associated with the combination ratio of the original image and the improved image is stored in advance, and based on the combination ratio information, the original image and The composition ratio for compositing with the improved image can be determined. This point will be described later with reference to FIG.
  • a plurality of types of combination ratio information can be stored in advance according to the situation in which the display image is displayed. This point will be described later with reference to FIGS.
  • the luminance of the light source of the display unit 100 can be increased according to the increase of the illuminance of the display unit 100. This point will be described later with reference to FIG.
  • an original image of a display image is generated from an image signal, and an improved image in which the visibility when the display unit illuminance is equal to or greater than a predetermined threshold is improved by image processing. Generate from the original image.
  • the image display method generates a display image with improved visibility according to the illuminance of the display unit by synthesizing the original image and the improved image at a synthesis ratio corresponding to the illuminance of the display unit. .
  • the image display method according to the present invention when the illuminance of the display unit increases, the visibility of the display image can be improved with a simple process while suppressing an increase in power consumption.
  • FIG. 2 is a block diagram illustrating a configuration of the image display apparatus 1 according to the present embodiment. In the figure, only components necessary for explaining the features of the image display apparatus 1 according to the present embodiment are shown, and descriptions of general components are omitted.
  • the image display device 1 includes an image signal input unit 2, a display unit 3, an illuminance detection unit 4, a control unit 5, and a storage unit 6.
  • the image signal input unit 2 is a processing unit that receives an input of an image signal from the outside of the image display device 1 and outputs it to the control unit 5.
  • an image signal input unit 2 for example, an LVDS (Low voltage differential signaling) receiver can be used.
  • the image signal input unit 2 receives image signal input from a plurality of devices provided in the vehicle.
  • the image signal input unit 2 receives an input of an image signal from a car navigation device or a television receiver provided in the vehicle, a back camera that captures the rear of the vehicle, and outputs the received image signal to the control unit 5. .
  • the display unit 3 is a device that displays the display image generated by the control unit 5 based on the image signal received by the image signal input unit 2.
  • a liquid crystal display is used as the display unit 3.
  • the display part 3 is not restricted to a liquid crystal display, Arbitrary display devices, such as a plasma display, can be used.
  • the illuminance detection unit 4 is a device that is provided in the vicinity of the display area of the display unit 3 and detects the illuminance of the display unit 3 and outputs it to the control unit 5.
  • the illuminance detection unit 4 includes an illuminance sensor such as a phototransistor, for example. Then, the illuminance sensor detects the illuminance of the display unit 3 that changes due to external light incident or the like, and outputs a signal corresponding to the detected illuminance to the control unit 5.
  • the illumination intensity detection part 4 does not necessarily need to be provided integrally with the display part 3.
  • the illuminance detection unit 4 is provided separately from the display unit 3 and indirectly detects the illuminance of the display unit 3 by detecting the illuminance of external light that affects the display unit 3 from a position separated from the display unit 3. You may comprise so that it may detect.
  • the control unit 5 is a processing unit that generates a display image to be displayed on the display unit 3 from the image signal input from the image signal input unit 2.
  • the control unit 5 includes an original image generation unit 51, an improved image generation unit 52, an image synthesis unit 53, and a luminance adjustment unit 54.
  • the original image generation unit 51 generates an original image that faithfully reproduces the luminance information and color information for each pixel included in the image signal input from the image signal input unit 2, and the improved image generation unit 52 and the image synthesis unit 53 is a processing unit that outputs to 53.
  • the improved image generation unit 52 improves the visibility when the illuminance of the display unit 3 is equal to or higher than a predetermined threshold (hereinafter referred to as “upper limit value”) with respect to the original image input from the original image generation unit 51.
  • the processing unit generates an improved image by performing image processing and outputs the improved image to the image composition unit 53.
  • this upper limit can be set arbitrarily.
  • the illuminance expected to be detected by the illuminance detection unit 4 when direct sunlight is inserted into the display unit 3 is set as the predetermined upper limit value regarding the illuminance of the display unit 3.
  • the improved image generation unit 52 always performs image processing that improves the visibility when the illuminance of the display unit 3 is extremely increased regardless of the detection result of the illuminance by the illuminance detection unit 4. To generate an improved image.
  • the improved image generation unit 52 adjusts the luminance, gradation, and contrast value of the original image input from the original image generation unit 51 for each pixel.
  • a method of adjusting the luminance, gradation, and contrast value of the original image by the improved image generation unit 52 will be briefly described.
  • a dynamic range for adjusting the luminance of the improved image to be generated is set in advance.
  • Such a dynamic range defines a luminance range in which so-called whiteout or so-called blackout does not occur in the improved image under the situation where the illuminance of the display unit 3 becomes the above-described upper limit value.
  • the improved image generation unit 52 adjusts the gamma value of each pixel of the original image so that the luminance of each pixel in the original image falls within a preset dynamic range.
  • the improved image generation unit 52 when adjusting the luminance of the original image, the improved image generation unit 52 performs image processing that decreases the luminance of the extremely high luminance region and increases the luminance of the extremely low luminance region in the original image. . In this way, the improved image generation unit 52 prevents whiteout or blackout from occurring in the improved image under the situation where the illuminance of the display unit 3 reaches the upper limit value.
  • the improved image generation unit 52 when adjusting the gradation of the original image, brings the gradation of the intermediate color area in the original image close to a pure color, and changes the gradation of the neutral color area in the original image to the primary color. The gradation of each pixel is adjusted so that it is closer. In this way, the improved image generating unit 52 brings the color of the improved image close to the original color of the original image under the situation where the illuminance of the display unit 3 reaches the upper limit value.
  • the improved image generation unit 52 when adjusting the contrast value of the original image, performs processing for increasing the contrast value to a preset setting value for an area where the contrast value in the original image is lower than the preset setting value. I do. In this way, the improved image generation unit 52 prevents the edge portion in the improved image from disappearing under the situation where the illuminance of the display unit 3 reaches the upper limit value.
  • the dynamic range, the gradation adjustment value for each pixel of the original image, and the contrast value set in the improved image generation unit 52 can be determined by performing a simulation in advance.
  • a situation where the illuminance of the display unit 3 is an upper limit value is intentionally created, and an arbitrary original image serving as a reference is displayed on the display unit 3 in such a situation, and the luminance, gradation, and contrast value of each pixel are set. Perform visibility simulation with any change.
  • the image composition unit 53 combines the original image input from the original image generation unit 51 and the improved image input from the improved image generation unit 52 corresponding to the illuminance of the display unit 3 detected by the illuminance detection unit 54. Is a processing unit that generates a display image by synthesizing and outputs to the luminance adjustment unit 54.
  • the image composition unit 53 is based on a signal corresponding to the illuminance of the display unit 3 input from the illuminance detection unit 54 and composition ratio information 61 described later stored in the storage unit 6.
  • the synthesis ratio for synthesizing is determined. The procedure for determining the composition ratio will be described later with reference to FIG.
  • the ratio of the ratio of the original image component to the improved image component in the display image generated by the image synthesis unit 53 is referred to as a synthesis ratio for synthesizing the original image and the improved image.
  • the component ratio of the original image in the display image generated by the image composition unit 53 is referred to as the composition ratio of the original image in the display image
  • the ratio of the component of the improved image in the display image is referred to as the composition ratio of the improved image in the display image. .
  • the luminance adjustment unit 54 is a processing unit that adjusts the luminance of the display image input from the image synthesis unit 53 and outputs the adjusted luminance to the display unit 3.
  • the brightness adjusting unit 54 is configured to detect the backlight that is the light source of the display unit 3 in accordance with the increase in the illuminance of the display unit 3 when the illuminance of the display unit 3 detected by the illuminance detection unit 4 is equal to or higher than a predetermined threshold. Perform backlight control to increase brightness.
  • the predetermined upper limit value related to the illuminance of the display unit 3 is used as the predetermined threshold value for the luminance adjustment unit 54 to perform the backlight control.
  • the threshold value may be arbitrarily changed. Good.
  • the luminance adjustment unit 54 increases according to the difference between the illuminance of the display unit 3 and the predetermined upper limit value when the illuminance of the display unit 3 detected by the illuminance detection unit 4 becomes equal to or higher than the predetermined upper limit value. Increase the brightness of the backlight by the amount.
  • the luminance adjustment unit 54 performs a process of maintaining the backlight at a predetermined luminance.
  • the brightness adjusting unit 54 increases the brightness of the backlight when the illuminance of the display unit 3 exceeds a predetermined upper limit value and it is difficult to improve the visibility by combining the original image and the improved image. To expand the dynamic range of the displayed image.
  • the image display apparatus 1 when the illuminance of the display unit 3 is equal to or higher than a predetermined threshold, the displayable gradation width can be expanded, and thus the visibility of the display image is further improved. be able to. Moreover, since the brightness
  • the storage unit 9 stores composite ratio information 61 indicating a correspondence relationship between the composite ratio of the original image and the improved image and the illuminance of the display unit 3.
  • the composition ratio information 61 stored in the storage unit 6 and the composition ratio determination procedure by the image composition unit 53 will be described with reference to FIG.
  • FIG. 3 is a diagram illustrating an example of the synthesis ratio information 61 according to the present embodiment.
  • the composition ratio information 61 is a table in which the composition ratio of the original image in the display image is associated with each illuminance of the display unit 3.
  • composition ratio of the original image in the display image is associated with each illuminance of the display unit 3
  • composition ratio of the improved image in the display image is associated with each illuminance of the display unit 3.
  • a combination ratio of both the original image and the improved image in the display image may be associated with each illuminance of the display unit 3.
  • the image composition unit 53 When the image composition unit 53 composes the original image and the improved image, the image composition unit 53 refers to the composition ratio information 61 and associates the composition ratio associated with the illuminance of the display unit 3 detected by the illuminance detection unit 4. (%) Is determined as the composition ratio of the original image in the display image.
  • the image composition unit 53 determines (100 ⁇ )% as the composition ratio of the improved image in the display image.
  • the image composition unit 53 can determine the composition ratio for composing the original image and the improved image without referring to the table and performing complicated calculation processing.
  • the image composition unit 53 displays 100% (see FIG. 3A) associated with 0 (lux). Is determined as a synthesis rate of the original image. In such a case, the image composition unit 53 outputs the original image as a display image to the luminance adjustment unit 54.
  • the image composition unit 53 displays 70% (see FIG. 3A) associated with 1000 (lux). Is determined as the composition ratio of the original image, and 30% is determined as the composition ratio of the improved image.
  • the image synthesis unit 53 generates a display image by synthesizing the original image and the improved image for each corresponding pixel at the determined synthesis ratio.
  • the weighting target is not limited to the luminance value of the original image or the improved image.
  • an R (red) G (green) B (blue) value indicating the color of each pixel in the original image or the improved image. It may be.
  • the composition ratio information 61 is determined so that the composition ratio of the original image to be associated decreases as the illuminance of the display unit 3 increases. Therefore, the image composition unit 53 generates a display image with brightness, color, and contrast that is closer to the improved image as the illuminance of the display unit 3 increases.
  • the image composition unit 53 simply performs a simple process of changing the composition ratio between the original image and the improved image according to the illuminance of the display unit 3, and the visibility of the display image according to the illuminance of the display unit 3. Can be improved.
  • the synthesis rate information is the table shown in FIG. 3A
  • the synthesis rate information is not limited to the table.
  • the composition ratio information 61 as shown in FIG. 3B, a function indicating a correspondence relationship between the illuminance of the display unit 3 and the composition ratio of the original image in the display image can be used.
  • the combination ratio information 61 when a function is used as the combination ratio information 61, it is not necessary to store all the illuminance and the combination ratio corresponding to the illuminance in the storage unit 6 as in the table shown in FIG. Therefore, the storage capacity of the storage unit 6 can be used effectively.
  • the function in which the composite ratio changes linearly with respect to the illuminance has been described as an example.
  • a function in which the composite ratio changes stepwise for each predetermined range of illuminance may be used.
  • the composition ratio of the original image corresponding to the illuminance of 0 or more and less than 4000 (lux) is 100%
  • the composition ratio of the original image corresponding to the illuminance of 4000 or more and less than 10,000 (lux) is 50% or more.
  • It is also possible to use a function such that the composition ratio of the original image corresponding to the illuminance is 0%.
  • composition ratio of the original image or the improved image in the display image is 0% or 100%
  • a process of outputting the improved image or the original image as it is as a display image is performed.
  • such a process is also performed. It is defined as image composition processing.
  • FIG. 4 is a flowchart illustrating processing executed by the image display apparatus 1 according to the present embodiment. In the figure, only processing relating to the characteristics of the image display apparatus 1 according to the present embodiment is shown, and description of general processing is omitted.
  • step S101 when the image display apparatus 1 is turned on, it determines whether or not an image signal is input (step S101), and determines that no image signal is input (step S101). , No), the process ends.
  • step S101 when an image signal is input (step S101, Yes), the image display device 1 generates an original image from the image signal (step S102).
  • the image display device 1 generates an improved image in which the visibility when the illuminance of the display unit 100 is greater than or equal to a predetermined threshold is improved by image processing from the original image (step S103), and is displayed by the illuminance detection unit 4 The illuminance of unit 3 is detected (step S104).
  • the image display device 1 refers to the combination ratio information 61 and combines the original image and the improved image based on the combination ratio associated with the illuminance of the display unit 3 detected by the illuminance detection unit 4.
  • a display image is generated (step S105).
  • the image display device 1 determines whether or not the illuminance of the display unit 3 detected by the illuminance detection unit 4 is less than a predetermined upper limit value (step S106). Then, when the image display device 1 determines that the illuminance of the display unit 3 is equal to or higher than the predetermined upper limit value (No in step S106), the image display device 1 backlights according to the difference between the illuminance of the display unit 3 and the predetermined upper limit value. Backlight control is performed to increase the brightness (step S107), and the process proceeds to step S106.
  • step S106 determines that the illuminance of the display unit 3 is less than the predetermined upper limit value (step S106, Yes)
  • step S105 the display image generated in step S105 is output to the display unit 3 (step S108). The process is terminated.
  • the image display device 1 repeatedly executes the processes in steps S101 to S108 during the period when the power is turned on.
  • the image display device 1 generates an original image from the image signal, and also generates an improved image from which the visibility when the illuminance of the display unit 3 is equal to or greater than a predetermined threshold is improved by image processing. .
  • the image display apparatus 1 produces
  • each time the illuminance of the display unit 3 changes instead of performing image processing that differs depending on the illuminance on the original image, it is easy to change the synthesis ratio of the original image and the improved image.
  • the visibility of the display image can be improved with a simple process.
  • the display unit 3 improves the visibility of the display image only by combining the original image and the improved image by the image combining unit 53.
  • the luminance of the light source is not increased unnecessarily.
  • the image display apparatus 1 improves the visibility of a display image with low power consumption compared with the conventional image display apparatus which raises the brightness
  • the image display device 1 since the image display device 1 generates a display image by combining the improved image generated by adjusting not only the luminance of the original image but also the gradation and the contrast value and the original image, only the light source of the display unit 3 is used.
  • the visibility of the display image can be further improved as compared with the conventional image display device that adjusts the image quality.
  • the image display device 1 stores the combination ratio information 61 indicating the correspondence between the combination ratio of the original image and the improved image and the illuminance of the display unit, and the illuminance of the display unit 3 detected by the illuminance detection unit 4 and Based on the combination ratio information 61, a combination ratio for combining the original image and the improved image is determined.
  • the image display apparatus 1 refers to the synthesis ratio information 61 without performing complicated processing, and determines the synthesis ratio associated with the illuminance of the display unit 3.
  • the synthesis ratio of the original image and the improved image can be determined simply by searching.
  • the image display device 1 has a partial area corresponding to the original image and the improved image. Can also be synthesized.
  • FIG. 5 is a diagram illustrating an example in which only corresponding partial regions of the original image and the improved image are synthesized.
  • the image display device 1 uses a display image obtained by synthesizing the original image and the improved image only for the central region 3B of the display region 3A for displaying the display image, and around the central region 3B.
  • a display image can be generated using only the original image.
  • the visibility of only the area where the necessary information is displayed depends on the illuminance of the display unit 3. Can be processed.
  • the image display device 1 uses a display image obtained by combining the original image and the improved image only in the upper half area 3D of the display area 3A, and uses the lower half of the display area 3A.
  • a display image can be generated using only the original image.
  • the upper half area 3D of the display area 3A when external light is incident only on the upper half area 3D of the display area 3A due to the positional relationship between the installation position of the display section 3 and the position of the vehicle window in the vehicle, the upper half area 3D of the display area 3A. Only the process for improving the visibility according to the illuminance of the display unit 3 can be performed.
  • the image display device 1 uses a display image obtained by combining the original image and the improved image only for the upper right region 3F with the diagonal line of the display region 3A as a boundary, and for the lower left region 3G. Can generate a display image using only the original image.
  • the display unit 3 when the display unit 3 is provided between the steering wheel and the right-side vehicle window in the right-hand drive vehicle, the display unit is displayed only on the upper-right region 3F of the display region 3A where external light is likely to enter.
  • the processing for improving the visibility can be performed according to the illuminance of 3.
  • the image display device 1 is configured to synthesize only the corresponding partial areas of the original image and the improved image, thereby reducing the amount of processing for improving the visibility according to the illuminance of the display unit 3. be able to.
  • the area where the original image and the improved image are combined may be arbitrarily set by the user of the image display device 1, and the display displayed on the display unit 3 by the image display device 1. You may comprise so that it may set automatically according to the kind of image.
  • an operation unit that accepts a setting operation by the user is provided in the image display device 1 and the operation of the operation unit is combined with the original image and the improved image.
  • a table that associates the areas to be performed is provided.
  • the image display device 1 is provided with a determination unit that determines the type of the display image, and the type of the display image and the original image.
  • a table is provided in which the image and the area for combining the improved image are associated with each other.
  • the case where the image display device 1 stores one type of composition ratio information 61 has been described.
  • a plurality of types of composition ratio information 61 may be stored in the image display device 1. it can.
  • a case where a plurality of types of composition ratio information 61 are stored in the image display apparatus 1 will be described with reference to FIGS. 6 and 7.
  • FIG. 6 is a diagram illustrating an example of the synthesis ratio information 61 provided for each input system of image signals
  • FIG. 7 is a diagram illustrating an example of the synthesis ratio information 61 provided for each direction in which a display image is visually recognized. is there.
  • the image display device 1 can also store a plurality of types of composition ratio information 61 for each input system of image signals, that is, image sources.
  • a plurality of types of composition ratio information 61 for each input system of image signals that is, image sources.
  • image sources that is, image sources.
  • FIG. 6 an example in which there are three types of input systems of image signals input to the image display device 1 is shown.
  • the image display device 1 when the image display device 1 is connected to three devices, that is, a television receiver, a back camera that captures the rear of the vehicle, and a car navigation device, the composite ratio information for television, the composite ratio information for back camera, and the navigation device
  • the synthesis ratio information is stored.
  • the composition ratio of the original images associated with the same illuminance is set so as to decrease in the order of navigation composition ratio information, back camera composition ratio information, and television composition ratio information.
  • the image display device 1 determines the input system of the image signal, and combines the original image and the improved image with reference to the combination ratio information 61 corresponding to the determined input system. Determine the synthesis ratio.
  • the method for determining the input system of the image signal is not particularly limited.
  • the image display device 1 may determine the input system based on a terminal to which the image signal is input.
  • the average luminance of the image may be calculated, and the input system may be determined based on the average luminance.
  • the image display apparatus 1 further improves the visibility of the display image by synthesizing the original image and the improved image at an appropriate synthesis ratio corresponding to each input system for each input system of the image signal. Can do.
  • the luminance of the display image decreases.
  • the image display apparatus 1 switches the composite ratio information 61 to be referred to from the navigation composite ratio information to the television composite ratio information even when the illuminance of the display unit is not changed, thereby synthesizing the improved image in the display image.
  • the ratio is increased and the composition ratio of the original image is decreased.
  • the image display device 1 can improve the decrease in the visibility of the display image due to the decrease in the luminance of the display image.
  • the image display device 1 can also store a plurality of composition ratio information 61 for each direction in which the display image is viewed.
  • the image display device 1 can also store 90 ° (front) synthesis ratio information shown in FIG. 7A and 45 ° synthesis ratio information shown in FIG. 7B.
  • the synthesis ratio information for 90 degrees (front) is the synthesis ratio information 61 assuming that the display image is viewed from the direction of 90 degrees (front) with respect to the display surface.
  • the 45-degree composition ratio information is composition ratio information 61 assuming that the display image is viewed from an oblique angle of 45 degrees with respect to the display surface.
  • the composition ratio of the original image associated with the same illuminance is set so that the composition ratio information for 45 degrees is lower than the composition ratio information for 90 degrees (front).
  • the image display device 1 determines the direction in which the display image is visually recognized, and determines the combination ratio between the original image and the improved image with reference to the combination ratio information 61 corresponding to the determined direction.
  • the image display device 1 can effectively improve the visibility of the display image according to the position of the user who visually recognizes the display image.
  • the image display device 1 determines the synthesis ratio with reference to the 45-degree synthesis ratio information, thereby allowing the driver or passenger seat user to determine the synthesis ratio.
  • the visibility of the display image can be improved effectively.
  • the image display device 1 can effectively improve the visibility of the display image for the user in the rear seat by determining the synthesis ratio with reference to the synthesis ratio information for 90 degrees (front). .
  • the method for determining the viewing direction of the display image by the image display device 1 is not particularly limited.
  • an operation unit that allows the user to set and operate the viewing direction of the display image is provided in the image display device 1, and the operation unit Based on the above operation, the image display device 1 may determine the viewing direction of the display image.
  • the image display device 1 is provided with a human body detection sensor for detecting the position of the human body existing in the vicinity of the display unit, and the image display device 1 is based on the positional relationship between the human body position detected by the human body detection sensor and the display unit. May determine the viewing direction of the display image.
  • the image display device 1 stores a plurality of types of data with different composition ratios that are associated with illuminance, and the ratio of the components of the improved image and the original image that the user of the image display device 1 occupies in the display image. You may comprise so that a setting and the cancellation of a setting can be performed arbitrarily.
  • the image display apparatus 1 can finely adjust the image quality of the display image in accordance with the taste of each user.
  • the illuminance detection unit that detects the illuminance of the display unit includes one illuminance sensor.
  • the image display device 1 according to the present embodiment includes a plurality of illuminance sensors. You can also.
  • FIG. 8 is a diagram illustrating the arrangement of the plurality of illuminance sensors and the operation of the image display apparatus 1 when a plurality of illuminance sensors are provided.
  • a plurality of illuminance sensors 41 to 48 are provided in a frame 31 that surrounds the display area 30 of the display unit 3 in a frame shape. Specifically, illuminance sensors 41, 43, 46, and 48 are provided at the four corners of the frame 31, and illuminance sensors 42, 44, 45, and 47 are provided at the centers of the sides of the frame 31, respectively.
  • each of the illuminance sensors 41 to 48 detects the illuminance in three stages of (high), (medium), and (low). Then, the image display device 1 discriminates areas having different illuminances in the display area 31 based on the combination of illuminances detected by the illuminance sensors 41 to 48.
  • the image display device 1 has a detection result of three illumination sensors 41, 44, and 46 provided along the left side of the display area 30 (low), and the display area It is assumed that the detection results (high) of the illuminance sensors 43, 45, and 48 provided along the right side of 30 are obtained.
  • the detection result of the illuminance sensor 42 provided in the vicinity of the center of the upper side of the display area 30 is (middle)
  • the detection result of the illuminance sensor 47 provided in the vicinity of the center of the lower side of the display area 30 is (medium).
  • the image display device 1 has a left-side area obtained by dividing the display area into three equal parts in the left-right direction, a low-illuminance area 32, a central area, a medium-illuminance area 33, and a right-side area. Is determined as the high illuminance region 34.
  • the image display device 1 is provided at the lower left of the display area 30 with the detection result of the illuminance sensor 43 provided at the upper right of the display area 30 (high). It is assumed that the detection result of the illuminance sensor 46 is (low). It is assumed that the detection results of the other illuminance sensors 41, 42, 44, 45, 47, and 48 are all (medium).
  • the image display device 1 sets the area surrounded by the illuminance sensors 41, 42, 44, 45, 47, and 48 whose detection result is (medium) to the medium illuminance.
  • the region 33 is discriminated. Further, the image display device 1 determines that the upper right area of the medium illuminance area 33 in the display area 30 is the high illuminance area 34 and the lower left area is the low illuminance area 32.
  • the image display apparatus 1 discriminate
  • a display image is generated by synthesizing the original image and the improved image at the associated synthesis ratio.
  • the image display device 1 synthesizes the original image and the improved image for each region having different illuminances in the display region 30 at a composition ratio corresponding to the illuminance of each region. Therefore, the visibility of the display image can be further improved.
  • the composition ratio of the original image and the improved image may change abruptly at each boundary.
  • the image display apparatus corrects the combination ratio when combining the original image and the improved image with a combination ratio corresponding to the illuminance of each area for each area having different illuminances in the display area 30. Process.
  • FIG. 9 is a diagram illustrating a composition ratio correction process.
  • FIG. 2A shows a low illuminance area 32, a medium illuminance area 33, and a high illuminance area 34 in the display area 30.
  • (B) shows the composition ratio of the original image in the display image before the correction process
  • (C) shows the composition ratio of the original image in the display image after the correction process.
  • the vertical axis in FIGS. 7B and 7C is the composition ratio of the original image in the display image
  • the horizontal axis indicates the horizontal position in the display area 30.
  • the image display device 1 divides the display area 30 into three equal parts in the left-right direction, the left area is a low illuminance area 32, the central area is a medium illuminance area 33, and the right area is a high illuminance. Assume that the region 34 is identified.
  • the composition ratios of the original images corresponding to the illuminances of the low illuminance area 32, the medium illuminance area 33, and the high illuminance area 34 are 100%, 70%, and 10%, respectively.
  • a 30% difference occurs in the composition ratio at the boundary between the low illuminance area 32 and the medium illuminance area 33
  • a 60% difference occurs in the composition ratio at the boundary between the medium illuminance area 33 and the high illuminance area 34.
  • the image display device 1 includes an original image, an improved image, and an improved image in an area having a predetermined width W including the boundaries of the low illuminance area 32, the medium illuminance area 33, and the high illuminance area 34. Correction processing is performed to smooth the difference in the synthesis ratio for synthesizing.
  • the image display apparatus 1 can blur the boundary lines generated between the low illuminance area 32, the medium illuminance area 33, and the high illuminance area 34 in the display image, the visual display given to the user A sense of incongruity can be reduced.
  • the image display device 1 stores width information related to the predetermined width W for performing the correction process in a register.
  • the image display apparatus 1 is configured so that the predetermined width W for performing the correction process can be arbitrarily set by changing the width information stored in the register.
  • the image display device 1 can perform the composition ratio correction process when there is a difference between the composition ratio of the display image being displayed and the composition ratio of the display image to be displayed next.
  • the image display device 1 changes the composition ratio stepwise on the time axis when the difference between the composition ratio in the display image being displayed and the composition ratio of the display image to be displayed next is equal to or greater than a predetermined threshold value. As a result, the temporal change in the composition ratio is smoothed.
  • the image display device 1 can suppress the flickering of the display image due to the change in the composition ratio.
  • the image display device 1 also stores period information relating to a period for smoothing the temporal change in the composition ratio in the register. And the image display apparatus 1 can set arbitrarily the period which smoothes the time change of a synthetic
  • the combination ratio information 61 information in which the combination ratio of the original image in the display image is associated with each illuminance of the display unit is used, but the information is associated with the combination ratio of the original image in the display image.
  • a predetermined width may be provided for the illuminance.
  • FIG. 10 is a diagram illustrating an example of the composition ratio information 61 in which a predetermined width is provided for the illuminance associated with the composition ratio of the original image in the display image.
  • the illuminance of the display unit 3 is 0 to 999 (lux) low, and 1000 to 4999 (lux) medium. Illuminance of 5000 (lux) or higher is defined as high illuminance.
  • the composition ratio of the original image in the display image corresponding to the illuminance of the display unit is 100% for low illuminance, 50% for medium illuminance, and 10% for high illuminance. Assume that they are associated with each other and the synthesis rate information 61.
  • the processing amount of the image display device 1 can be effectively reduced. For example, when the illuminance of the display unit 3 detected by the illuminance detection unit 4 frequently fluctuates between 0 and 999 (lux), the visibility of the display image does not change significantly.
  • the image display device 1 allows the illuminance of the display unit 3 even if the illuminance of the display unit frequently varies between 0 and 999 (lux).
  • the composition rate is not changed every time the value changes, and the original image and the improved image are not unnecessarily synthesized.
  • the image display apparatus generates an original image from an image signal, and an improved image in which the visibility when the illuminance of the display unit is equal to or higher than a predetermined threshold is improved by image processing. Generate from the original image.
  • the image display apparatus generates a display image with improved visibility according to the illuminance of the display unit by synthesizing the original image and the improved image at a synthesis ratio corresponding to the illuminance of the display unit. To do.
  • the image display apparatus every time the illuminance of the display unit changes, the original image is not subjected to different image processing depending on the illuminance, but at a composition ratio corresponding to the illuminance.
  • the visibility of the display image can be improved by a simple process of combining the improved image and the improved image.
  • the visibility of the display image is improved only by the synthesis of the original image and the improved image by the image synthesis unit.
  • the luminance of the light source of the part is not increased unnecessarily.
  • the image display apparatus improves the visibility of the display image with low power consumption as compared with the conventional image display apparatus that increases the luminance of the light source of the display unit every time the illuminance of the display unit increases. can do.
  • the image display device performs a process of improving the visibility of the display image based on the real-time illuminance of the display unit detected by the illuminance detection unit, but the illuminance detected in the past Processing for improving the visibility of the display image may be performed based on the above.
  • the image display device acquires the travel point, travel direction, and travel date and time of the vehicle from the navigation device as needed.
  • the image display device simultaneously acquires weather information at the travel point from the digital television device. Then, the image display device associates each piece of information with the display unit illuminance at each travel point, and accumulates the information as status information at each travel point in the storage unit.
  • the image display device determines the situation at the currently traveled travel point based on the information acquired from the navigation device and the digital television device while the vehicle is running, and stores the situation information corresponding to the determined situation in the memory. If so, the original image and the improved image are synthesized based on the illuminance in the corresponding situation information.
  • the image display device is based on the illuminance of the display unit detected in the past if the vehicle has traveled frequently.
  • the visibility of the display image can be improved by combining the image and the improved image.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Remote Sensing (AREA)
  • Computer Graphics (AREA)
  • Emergency Management (AREA)
  • Ecology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

L'invention concerne un dispositif d'affichage d'image qui permet d'améliorer la visibilité d'une image d'affichage, tout en supprimant l'augmentation de quantité de traitement d'image lorsqu'une lumière externe éclaire un dispositif d'affichage. Le dispositif d'affichage d'image est construit de telle sorte qu'une image d'affichage est générée dans laquelle la visibilité est améliorée en fonction de l'éclairement de la lumière externe ayant une incidence sur une partie d'affichage qui affiche des images. L'image d'affichage est générée par utilisation d'une image originale pour générer une image améliorée dans laquelle la visibilité de l'image originale a été améliorée, par détection de l'éclairement de la lumière externe ayant une incidence sur la partie d'affichage, et par synthèse de l'image originale et de l'image améliorée selon un rapport de synthèse correspondant à l'éclairement détecté.
PCT/JP2011/050988 2010-06-08 2011-01-20 Dispositif d'affichage d'image WO2011155228A1 (fr)

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JP2010131363A JP2011257554A (ja) 2010-06-08 2010-06-08 画像表示装置

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016039954A1 (fr) * 2014-09-08 2016-03-17 Qualcomm Incorporated Réglage de dispositif d'affichage par un dispositif de commande

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5997019B2 (ja) * 2012-11-22 2016-09-21 シャープ株式会社 表示制御装置、表示制御方法、および表示制御プログラム
JP2021173931A (ja) * 2020-04-28 2021-11-01 株式会社デンソー 車載用表示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005227694A (ja) * 2004-02-16 2005-08-25 Canon Inc 画像表示装置および画像表示方法
JP2007310096A (ja) * 2006-05-17 2007-11-29 Sharp Corp 映像表示装置、及びその表示輝度調整方法
WO2009101802A1 (fr) * 2008-02-15 2009-08-20 Panasonic Corporation Module de gestion de couleur, dispositif de gestion de couleur, circuit intégré, dispositif d'affichage et procédé de gestion de couleur
JP2009258219A (ja) * 2008-04-14 2009-11-05 Denso Corp 表示装置
JP2010117579A (ja) * 2008-11-13 2010-05-27 Sharp Corp 液晶表示装置及び液晶表示装置における視野角特性改善方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010013308A1 (fr) * 2008-07-28 2010-02-04 Ｎｅｃディスプレイソリューションズ株式会社 Dispositif d'affichage d'échelle de gris

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005227694A (ja) * 2004-02-16 2005-08-25 Canon Inc 画像表示装置および画像表示方法
JP2007310096A (ja) * 2006-05-17 2007-11-29 Sharp Corp 映像表示装置、及びその表示輝度調整方法
WO2009101802A1 (fr) * 2008-02-15 2009-08-20 Panasonic Corporation Module de gestion de couleur, dispositif de gestion de couleur, circuit intégré, dispositif d'affichage et procédé de gestion de couleur
JP2009258219A (ja) * 2008-04-14 2009-11-05 Denso Corp 表示装置
JP2010117579A (ja) * 2008-11-13 2010-05-27 Sharp Corp 液晶表示装置及び液晶表示装置における視野角特性改善方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016039954A1 (fr) * 2014-09-08 2016-03-17 Qualcomm Incorporated Réglage de dispositif d'affichage par un dispositif de commande
US9495004B2 (en) 2014-09-08 2016-11-15 Qualcomm Incorporated Display device adjustment by control device

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