JP5268146B2 - Display unevenness reproduction method and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for reproducing display irregularity for reproducing display irregularity such as irregular brightness and irregular color different according to characteristic peculiar to an individual display on a display screen of another display, and an image display system, a display, a computer program and a recording medium. <P>SOLUTION: A correction amount calculation part 121 calculates a target correction amount by adding display irregularity data of another display to display irregularity correction data 171 of this display, holds the calculated target correction amount in a correction table and outputs it to an interpolation processing part 122. The interpolation processing part 122 performs interpolation processing by using the target correction amount calculated by the correction amount calculation part 121, thereby calculating the target correction amount corresponding to a pixel other than a pixel corresponding to each point of the correction table. A correction processing part 123 corrects gradation of an input image signal based on the target correction amount, and outputs the corrected image signal to an output part 13. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a method for reproducing display unevenness, an image display system, and a display device that can reproduce display unevenness such as brightness unevenness and color unevenness due to the unique characteristics of each display device on the display screen of another display device. The present invention relates to a computer program and a recording medium.

  A display device such as an LCD (Liquid Crystal Display) monitor has a liquid crystal panel (display unit) in which a liquid crystal material is sealed between a pair of glass substrates, and a backlight disposed on the back of the liquid crystal panel, and is connected to the display device. An image signal is input from an external image output device such as a personal computer. A gate driver and a source driver incorporated in the display device are connected to the gate and source of the TFT that drives each pixel of the liquid crystal panel, and control on / off of the TFT based on an image signal input to the display device. At the same time, a voltage (input level to the liquid crystal panel) corresponding to the image signal is applied to the TFT controlled to be turned on to change the light transmittance determined by the electro-optical characteristics of the liquid crystal substance. Thus, the display device displays an image by controlling the amount of light transmitted through the liquid crystal panel for each pixel.

  The display characteristics of the display device depend on the characteristics of the liquid crystal panel and peripheral circuits used, and therefore differ depending on the type and type of the liquid crystal panel and the display device. The display device has unique display characteristics. Then, display unevenness such as spatial brightness unevenness and color unevenness occurs in the screen area of the display device. Such display unevenness appears particularly prominently in the periphery of the screen area. The same applies not only to a display device using a liquid crystal panel but also to a display device such as a PDP (Plasma Display Panel) monitor or an organic EL (Electro Luminescence) monitor.

  In general, when displaying image data on a display device, various methods have been devised for improving the difference in image appearance due to the difference in display device. For example, color sample data is input to each of the creation display device emulation means and the execution display device emulation means, the color reproduction on each display device is emulated, and the result is compared by the color reproducibility difference detection means. An image data color arrangement support device is disclosed in which a data creator can select a color used for data creation after grasping in advance a color change due to a difference between devices by outputting (see, for example, Patent Document 1). .)

JP 2004-139496 A

  However, the apparatus of Patent Document 1 merely emulates color reproducibility, and does not consider display unevenness such as spatial luminance unevenness and color unevenness on the screen area. In other words, the device of Patent Document 1 is represented by color sample data by reproducing a color palette (color sample data) representing a plurality of colors on each display device and acquiring the difference between the two. Although it is possible to know in advance the color change that occurs when a specific color is displayed on a different display device, it is not possible to know in advance the spatial luminance unevenness and color unevenness on the screen area caused by the unique characteristics of the display device.

  The present invention has been made in view of such circumstances, and display unevenness such as brightness unevenness and color unevenness due to the unique characteristics of each display device can be reproduced on the display screen of another display device. Provided are a method for reproducing display unevenness, an image display system capable of performing the reproduction method, a display device realizing the image display system, a computer program capable of realizing the display device, and a recording medium recording the computer program There is to do.

The display unevenness reproducing method according to the first invention uses a display device that displays an image corresponding to the intensity of the input image signal on the display screen, and reproduces the display unevenness of another display device on the display screen. The target correction amount for the intensity of the input image signal is set so that the display intensity representing the display unevenness of the display screen is equal to the display intensity representing the display unevenness of the other display device. Based on the calculated target correction amount, the intensity of the input image signal is corrected by the correction means, and an image corresponding to the corrected intensity is displayed on the display screen to reproduce display unevenness. a is, the other previously stored in the storage unit a unique correction amount to the intensity of the image signal to correct a display non-uniformity on the display screen, by the target correction amount calculating means, the stored unique correction amount Characterized in that by adding the display intensity representing a display unevenness of the display device calculates the target correction amount.

The display unevenness reproducing method according to the second invention uses a display device that displays an image corresponding to the intensity of the input image signal on the display screen, and reproduces the display unevenness of another display device on the display screen. The target correction amount for the intensity of the input image signal is set so that the display intensity representing the display unevenness of the display screen is equal to the display intensity representing the display unevenness of the other display device. Based on the calculated target correction amount, the intensity of the input image signal is corrected by the correction means, and an image corresponding to the corrected intensity is displayed on the display screen to reproduce display unevenness. a is, the display intensity representing the display unevenness on the display screen is calculated by the difference calculation means the difference between the display intensity representing a display unevenness of the other display device, by the target correction amount calculating means, the calculated And calculates the target correction amount based on the difference.

According to a third aspect of the present invention, there is provided a display device for displaying an image corresponding to the intensity of an input image signal on a display screen, wherein the display intensity representing the display unevenness of the display screen represents the display unevenness of another display device. A correction amount calculating means for calculating a target correction amount for the intensity of the input image signal so as to be equal to the display intensity, and the intensity of the input image signal based on the target correction amount calculated by the correction amount calculating means. Correction means for correcting, display means for displaying an image corresponding to the intensity corrected by the correction means, and storage means for storing a specific correction amount for the intensity of the image signal to correct display unevenness on the display screen. The correction amount calculating means is configured to calculate a target correction amount by adding a display intensity representing display unevenness of the other display device to the inherent correction amount stored in the storage means. You .

According to a fourth aspect of the present invention, there is provided a display device for displaying an image corresponding to the intensity of an input image signal on a display screen, wherein the display intensity representing the display unevenness of the display screen represents the display unevenness of another display device. A correction amount calculating means for calculating a target correction amount for the intensity of the input image signal so as to be equal to the display intensity, and the intensity of the input image signal based on the target correction amount calculated by the correction amount calculating means. Correction means for correcting, display means for displaying an image corresponding to the intensity corrected by the correction means, display intensity representing display unevenness on the display screen, and display intensity representing display unevenness of the other display device Difference calculating means for calculating a difference is provided, and the correction amount calculating means is configured to calculate a target correction amount based on the difference calculated by the difference calculating means.

A display device according to a fifth aspect of the present invention is the display device according to any one of the third to fourth aspects, wherein the display intensity representing the display unevenness of the other display device is stored in association with the display elapsed time of the other display device. Storage means and receiving means for receiving the display elapsed time setting, wherein the correction amount calculating means is configured to calculate a target correction amount based on a display intensity corresponding to the display elapsed time received by the receiving means. It is characterized by being.

A display device according to a sixth aspect of the present invention is the display device according to any one of the third to fourth aspects of the present invention, comprising: storage means for storing display intensity representing display unevenness of the other display device in association with temperature; and setting the temperature. A receiving unit is provided, and the correction amount calculating unit is configured to calculate a target correction amount based on a display intensity corresponding to the temperature received by the receiving unit.

A display device according to a seventh invention is the display device according to any one of the third invention to the fourth invention, wherein the storage means for storing the display intensity representing the display unevenness of the other display device in association with the humidity, and the setting of the humidity An accepting unit is provided, and the correction amount calculating unit is configured to calculate a target correction amount based on a display intensity corresponding to the humidity received by the accepting unit.

In the first invention, the second invention, the third invention, and the fourth invention, an image signal (e.g., a luminance component, Alternatively, the target correction amount for the intensity of the input image signal is determined based on the intensity (for example, gradation value) of each of the R, G, and B color components, or the luminance component and color difference component obtained from RGB. calculate. Since the display unevenness appears spatially on the display screen, the target correction amount can be calculated for each pixel position (pixel coordinate) on the display screen. The target correction amount indicates how much the intensity of the input image signal is increased or decreased. For example, if the target correction amount is 100%, the intensity of the image signal is not increased or decreased. If the correction amount is 90%, the intensity of the image signal is reduced to 90%. Then, based on the calculated target correction amount, the intensity of the input image signal is corrected, and an image corresponding to the corrected intensity (image signal intensity) is displayed on the display screen. Reproduce unevenness on the display screen.

The first and third inventions further store a specific correction amount for the intensity of the image signal in order to correct display unevenness on the display screen. The inherent correction amount can be obtained, for example, as follows. In other words, an image signal having a uniform luminance gradation value (intensity) over the entire display screen of the display device (different from other display devices) is input to the display device, and the luminance of the display screen is measured. In this case, display unevenness in which the luminance level of the peripheral portion is smaller than the central portion of the display screen appears due to the characteristics of the display device. Next, in order to realize a screen with no display unevenness, the luminance level of the peripheral portion of the display screen is set to the target luminance, and the luminance level of the central portion is lowered so that the luminance level is uniform over the entire display screen. Then, a specific correction amount for the intensity of the image signal is calculated. The target correction amount is calculated by adding display intensity representing display unevenness of other display devices to the stored inherent correction amount. By calculating the target correction amount by adding the display intensity representing the display unevenness of the other display device to the inherent correction amount, the display unevenness on its own display screen is eliminated by the inherent correction amount, and then the other display device Since the intensity of the input image signal is corrected in accordance with the display intensity representing the display unevenness, the display unevenness of other display devices can be reproduced more faithfully on its own display screen without unevenness.

The second and fourth inventions further calculate the difference between the display intensity representing the display unevenness on its own display screen and the display intensity representing the display unevenness of another display device. Based on the display unevenness of the display screen of the own display device, the display intensity representing the display unevenness of the other display device can be obtained, and the display screen of the own display device is canceled after canceling the display unevenness of the own display device. Only the display intensity representing the display unevenness of the other display device is extracted. The target correction amount is calculated based on the calculated difference. Thereby, the display unevenness of another display device can be reproduced more faithfully on its own display screen without unevenness.

In the fifth invention, the display intensity representing the display unevenness of the other display device is stored in association with the other display device display elapsed time (operation elapsed time), and the display intensity corresponding to the received display elapsed time is stored. Based on this, a target correction amount is calculated. Thereby, even when the display unevenness of the other display device changes with the display elapsed time, the target correction amount for the desired elapsed time can be calculated, so the display unevenness of the other display device can be reduced regardless of the elapsed time. Can be accurately reproduced.

In the sixth invention, the display intensity representing the display unevenness of the other display device is stored in association with the temperature, and the target correction amount is calculated based on the display intensity corresponding to the received temperature. As a result, even when the display unevenness of the other display device changes according to the temperature, the target correction amount for the desired temperature can be calculated. Therefore, the display unevenness of the other display device can be accurately determined regardless of the temperature. Can be reproduced.

In the seventh invention, the display intensity representing the display unevenness of the other display device is stored in association with the humidity, and the target correction amount is calculated based on the display intensity corresponding to the received humidity. Thereby, even when the display unevenness of the other display device changes according to the humidity, the target correction amount for the desired humidity can be calculated. Therefore, the display unevenness of the other display device can be accurately determined regardless of the humidity. Can be reproduced.

In the eighth invention, the display intensity representing the display unevenness of the other display device is stored in association with the inclination of the display screen of the other display device, and the target correction amount is based on the display intensity corresponding to the accepted inclination. Is calculated. As a result, even when the display unevenness changes due to the tilt of the display screen of the other display device, the target correction amount for the desired tilt can be calculated. The display unevenness of the display device can be accurately reproduced.

  In the present invention, display unevenness of another display device can be reproduced on its own display screen, and display quality can be improved.

It is a block diagram which shows the structure of the display apparatus of Embodiment 1 which concerns on this invention. It is a schematic diagram which shows an example of a structure of the correction amount calculation part. It is explanatory drawing which shows the example of the correction table of an initial state. It is explanatory drawing which shows the example of the correction table of the state which eliminated the display nonuniformity. It is explanatory drawing which shows the example of the correction table of the state which reproduces the display nonuniformity of another display apparatus. It is explanatory drawing which shows the example of the correction table of the state which offset the target correction amount. It is explanatory drawing which shows the concept of a three-dimensional interpolation process. It is explanatory drawing which shows an example of an interpolation process. It is explanatory drawing which shows the other example of an interpolation process. It is explanatory drawing which shows the specific example of an interpolation process. It is explanatory drawing which shows a mode that the display nonuniformity of a display apparatus is correct | amended. It is explanatory drawing which shows a mode that the display nonuniformity of another display apparatus is reproduced on a display apparatus. It is explanatory drawing which shows a mode that the display nonuniformity of another display apparatus is reproduced on a display apparatus. It is explanatory drawing which shows an example of the method of reproducing the display nonuniformity of several other display apparatuses. It is explanatory drawing which shows the problem in the case of the conventional display apparatus. It is explanatory drawing which shows the case of the display apparatus which concerns on this invention which can solve the conventional problem. It is a flowchart which shows the procedure of the calculation process of the display nonuniformity data of another display apparatus. It is a flowchart which shows the procedure of the process which reproduces the display nonuniformity of another display apparatus with a display apparatus. It is a flowchart which shows the procedure of the calculation process of the display nonuniformity data in consideration of the operation | movement elapsed time of another display apparatus. It is a flowchart which shows the procedure of the process which reproduces the display nonuniformity at the time of considering the operation elapsed time of another display apparatus with a display apparatus. It is a block diagram which shows the structure of the display apparatus of Embodiment 2 which concerns on this invention. 10 is a flowchart illustrating a procedure of processing for reproducing display unevenness of another display device in the display device according to the second embodiment.

Embodiment 1
Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments. FIG. 1 is a block diagram showing a configuration of a display device 100 according to Embodiment 1 of the present invention. The display device (own display device) 100 includes an input unit 10, a conversion unit 11, a display unevenness correction unit 12, an output unit 13, a display unit (own display screen) 14, an interface unit 15, a control unit 16, and a storage unit 17. The display unevenness correction unit 12 includes a correction amount calculation unit 121 as a target correction amount calculation unit, an interpolation processing unit 122, a correction processing unit 123 as a correction unit, and the like. Further, an image display system can be configured by the image generation apparatus that generates an image signal input to the display apparatus 100 and the display apparatus 100.

  The input unit 10 is an image signal output from an image signal output device (for example, a device that outputs an image signal such as a personal computer, a TV tuner, a DVD player, a portable terminal, or a game device) as an image generation device (not shown). And outputs the received image signal to the conversion unit 11. Here, the image signal includes information such as position information (pixel coordinates) and color components on the screen of each pixel constituting the image, and the color component of the image signal includes each color component (R: red) of each pixel. , G: green, B: blue), or tone values (intensities) of luminance components and color difference components obtained from color components (R, G, B). The image signal may be a luminance signal for a monochrome monitor. For example, the image signal is a signal of 24 bits in total for each color component of the pixels constituting the image of 8 bits (256 gradation levels from 0 to 255). The image signal may be either an analog signal format or a digital signal format. In this embodiment, the intensity of the color component of the image signal is described as a gradation value. However, the intensity of the color component is not limited to the gradation value, and is used to correct luminance unevenness and color unevenness. Any other pixel information may be used as long as the pixel information can be employed. The image signal may be a monochrome luminance signal, and the intensity of the image signal includes not only the intensity of the color component but also the intensity of the luminance signal.

  The conversion unit 11 converts the input image signal into a signal optimal for display on the display unit 14, and outputs the converted signal to the display unevenness correction unit 12. The conversion unit 11 performs image scaling processing according to the display size of the display unit 14. The conversion unit 11 includes, for example, a plurality of coefficients (color matrix) for color space conversion, and uses the required color matrix in accordance with the control from the control unit 16 to calculate the level of each color component of the input image signal. Convert key values.

  The display unevenness correction unit 12 corrects the gradation value (intensity of the color component) of the input image signal in order to eliminate display unevenness due to the display characteristics of the display device 100 (display unit 14). At the same time, the display unevenness correcting unit 12 corrects the gradation value (color component intensity) of the input image signal to thereby display characteristics of other display devices (for example, display devices A, B, C...). The display unevenness caused by this is displayed on the display unit 14 and reproduced. Hereinafter, the correction amount calculation unit 121 and the interpolation processing unit 122 as the target correction amount calculation unit, and the correction processing unit 123 as the correction unit will be specifically described.

  FIG. 2 is a schematic diagram illustrating an example of the configuration of the correction amount calculation unit 121. As shown in FIG. 2, the correction amount calculation unit 121 sets the correction amount corresponding to each of the three-dimensional matrix-like points in the vertical direction, the horizontal direction, and the gradation direction of the display screen (display area) of the display unit 14. Structure of the correction table to be held. For example, the vertical direction has points V0, V1,... Vm, the horizontal direction has points H0, H1,... Hn, and the gradation direction has a plurality of levels. All the layers have layers 0 and 1 corresponding to the gradation levels. In the example of FIG. 2, 256 gradations are divided into eight layers, such that layer 0 is gradation level 0 and layer 8 is gradation level 255. Although it is possible to hold each point of the three-dimensional matrix corresponding to all the pixels on the display screen, a large memory capacity is required to store data for all the pixels. Of these, the configuration shown in FIG. 2 is thinned out to the required number of pixels.

  The correction amount calculation unit 121 calculates a correction amount using provisional data (for example, an initial value) held in the correction table, holds the calculated correction amount in the correction table, and outputs the correction amount to the interpolation processing unit 122. To do. The correction amount calculated and held by the correction amount calculation unit 121 is a value (for example, 0 to 100%) indicating a correction ratio with respect to the gradation value (color component intensity) of the input image signal. For example, when the correction amount is 100%, the value is output to the output unit 13 without increasing or decreasing the gradation value of the image signal input in the correction processing unit 123. If the correction amount is 90%, 90% of the gradation value of the image signal input in the correction processing unit 123 is output to the output unit 13. The correction amount is not limited to the correction ratio (relative value) as described above, but may be a difference value of an increase or decrease with respect to a gradation value of an input image signal, or a gradation value. It is also possible to use a gradation value (absolute value) after correction.

  Next, a correction amount calculation method in the correction amount calculation unit 121 will be described. In the following, in order to simplify the description, the structure of the correction table is a two-dimensional matrix in which the vertical direction and the horizontal direction are 3 × 3. FIG. 3 is an explanatory diagram showing an example of the correction table in the initial state. As shown in FIG. 3, the correction amounts are all 100%. In this state, the gradation value of the input image signal is not corrected at all, and the value as it is is output to the output unit 13. Then, display unevenness due to display characteristics unique to the display device 100 (display unit 14) appears on the display unit 14.

  FIG. 4 is an explanatory diagram illustrating an example of a correction table in a state where display unevenness is eliminated. The correction amount shown in FIG. 4 is for correcting display unevenness on the display screen of the display device 100 (display unit 14), and is referred to as a specific correction amount. The inherent correction amount can be obtained, for example, as follows. That is, an image signal having a uniform luminance gradation value (intensity) over the entire display screen of the display unit 14 is input to the display device 100 to measure the luminance of the display screen. In this case, display unevenness in which the luminance level of the peripheral portion is smaller than the central portion of the display screen appears due to the characteristics of the display device 100. Next, in order to realize a screen with no display unevenness, the luminance level of the peripheral portion of the display screen is set to the target luminance, and the luminance level of the central portion is lowered so that the luminance level is uniform over the entire display screen. Then, the inherent correction amount for the intensity of the color component of the image signal is calculated. The inherent correction amount calculated in advance is stored in the storage unit 17 as its own display unevenness correction data 171. Note that the specific correction amount shown in FIG. 4 is an example, and is not limited to these values.

  FIG. 5 is an explanatory diagram illustrating an example of a correction table in a state in which display unevenness of another display device is reproduced. FIG. 5A is an example of a correction table in a state where display unevenness of its own display device 100 is eliminated, and is the same as FIG. FIG. 5B shows the intensity of the color component representing the display unevenness of another display device, which is relatively expressed with reference to the maximum luminance.

  The intensity of the color component representing the display unevenness of another display device can be obtained, for example, as follows. That is, the luminance of the display screen is measured by inputting an image signal having a uniform luminance gradation value (intensity) over the entire display screen of another display device. In this case, display unevenness appears on the display screen due to the characteristics of other display devices. The measured luminance is determined as the intensity of the color component representing the display unevenness in correspondence with the position and gradation level of each pixel on the display screen. The display unevenness data obtained in advance is stored in the storage unit 17 as display unevenness data 172, 173, 174, etc. for the display devices A, B, C and the like.

  FIG. 5C is a correction table in a state where display unevenness of another display device is displayed on the display unit 14 and reproduced, and each correction amount is referred to as a target correction amount. The calculation of the target correction amount in FIG. 5C can be performed by adding the intensity of the color component representing the display unevenness on the display screen of another display device to the specific correction amount. For example, paying attention to the position in the upper left column of the correction table, the inherent correction amount in FIG. 5A is 100%, and the distribution of display unevenness in FIG. 5B is −8%. , 100+ {100 × (−0.08)} = 92%. If attention is paid to the upper center of the correction table, the inherent correction amount in FIG. 5A is 92%, and the distribution of display unevenness in FIG. 5B is −6%. Is 92+ {92 × (−0.06)} = 86.5%. Thereafter, the target correction amount can be calculated in the same manner.

  By calculating the target correction amount by adding the intensity of the color component representing the display unevenness on the display screen of another display device to the specific correction amount, the display unevenness on the display screen of the display unit 14 is eliminated by the specific correction amount. In addition, the intensity of the color component of the input image signal is corrected in accordance with the intensity of the color component representing the display unevenness of other display devices (distribution of display unevenness). The display unevenness of other display devices can be faithfully reproduced on the display screen.

  FIG. 6 is an explanatory diagram illustrating an example of a correction table in a state where the target correction amount is offset. FIG. 6A is the same as FIG. 5C, and is a correction table in a state where display unevenness of other display devices is displayed on the display unit 14 and reproduced. In this state, since the input image signal is corrected in the direction in which the luminance is reduced as a whole, the largest correction value (for example, 93.1%) among the target correction amounts in FIG. Each target correction amount is offset at a constant ratio so that becomes 100%. FIG. 6B shows the target correction amount after performing the offset. Thereby, it is possible to prevent the brightness of the entire display screen from being lowered when reproducing the display unevenness.

  The interpolation processing unit 122 performs interpolation processing using the target correction amount calculated by the correction amount calculation unit 121, so that pixels other than the pixel corresponding to each point of the correction table (pixel position and gradation level) are obtained. The corresponding target correction amount is calculated. The interpolation processing unit 122 outputs the calculated target correction amount to the correction processing unit 123. When the correction amount calculation unit 121 calculates target correction amounts for all pixels, the interpolation processing unit 122 does not need to be provided, and the interpolation processing unit 122 is not an essential configuration.

  FIG. 7 is an explanatory diagram showing the concept of three-dimensional interpolation processing. In FIG. 7, each vertex of the rectangular parallelepiped corresponds to each point of the correction table shown in FIG. 2, and the target correction amount in the horizontal (horizontal) direction, vertical (vertical) direction, and gradation direction of the display screen is held. Then, using these target correction amounts, a target correction amount at an arbitrary point (arbitrary pixel) is calculated by interpolation processing. In the example of FIG. 7, the target correction amounts held in the correction table are V (y) H (x), V (y) H (x + 1), and V (y + 1) H for the layer L (z). (X), V (y + 1) H (x + 1), and four layers L (z + 1), V (y) H (x), V (y) H (x + 1), V (y + 1) H (x ), V (y + 1) H (x + 1). Then, the interpolation results in the horizontal (horizontal) direction, the vertical (vertical) direction, and the gradation direction of the display screen are expressed as an H interpolation result, a V interpolation result, and an L interpolation result, respectively.

  FIG. 8 is an explanatory diagram showing an example of interpolation processing, and FIG. 9 is an explanatory diagram showing another example of interpolation processing. The three-dimensional interpolation process shown in FIG. 7 performs interpolation for each of the horizontal direction, vertical direction, and gradation direction of the display screen. As an example of interpolation, there is linear interpolation, which is a calculation method based on the bilinear method. Two points at both ends of the interpolation point (points corresponding to the correction table) are connected by a straight line, and the value on the straight line is the value of the interpolation point. Is what you want. As shown in FIG. 8, when there are points X (n) and X (n + 1) held in the correction table, the target correction amount of an arbitrary point X ′ (m) between the two points is X ′. (M) = {X (n) × D2 + X (n + 1) × D1} / D. Here, D1 + D2 = D, and D1 and D2 are pixel position differences or gradation level differences between X (n) and X ′ (m), and X (n + 1) and X ′ (m), respectively. It is a difference in pixel position or a difference in gradation level.

  Also, as shown in FIG. 9, when there are points X (n) and X (n + 1) held in the correction table, the target correction amount of any point X ′ (m) outside these two points is X ′ (m) = X (n) − {X (n + 1) −X (n)} × D1 / D2. Here, D1 and D2 are pixel position differences or gradation level differences between X (n) and X ′ (m), respectively, and pixel position differences or gradations between X (n) and X (n + 1). It is a difference in level.

  When the resolution of the display screen of the display device that reproduces the display unevenness is, for example, 800 × 600 pixels, the target correction amount can be held in the correction table corresponding to all pixels, but the storage capacity increases. For this reason, it is preferable that the target correction amount of only a part of all the pixels is held and the target correction amount is calculated by interpolation processing for the remaining pixels. Similarly, with respect to the gradation levels, the target correction amounts corresponding to all the gradation levels are not held in the correction table, but only the target correction amounts for some gradation levels are held, and the remaining gradation levels are retained. In contrast, the target correction amount can be obtained by interpolation processing. When the gradation level is maximum (255) and minimum (0), only two-dimensional interpolation may be performed without performing three-dimensional interpolation.

  The points in the correction table are not limited to those arranged at equal intervals over the entire display screen. For example, display unevenness such as brightness unevenness and color unevenness tends to concentrate particularly on the periphery of the display screen, so it corresponds to each pixel with a small interval at the periphery of the display screen and a large interval at the center. The target correction amount can also be held in the correction table. That is, when storing the specific correction amount for the intensity of the color component of the image signal in order to correct the display unevenness on its own display screen, the number of the specific correction amounts to be stored is set in the peripheral portion rather than the central portion of the display screen. Do more. Then, the target correction amount is calculated by adding the intensity of the color component representing the display unevenness on the display screen of the other display device to the stored inherent correction amount, thereby reducing the interpolation processing in the portion where the display unevenness is large. Thus, it is possible to accurately correct a portion with a large display unevenness.

  FIG. 10 is an explanatory diagram showing a specific example of the interpolation processing. FIG. 10 shows a part of the edge of the display screen, and each frame shows each pixel. The displayed numerical value is the target correction amount, and indicates, for example, the ratio of the luminance to the measured maximum luminance. That is, for example, “90” indicates that the target correction amount is 90% and the luminance of the input image signal is corrected to 90%. Further, symbols (N1, N2,...) In the frame indicate pixels for calculating a target correction amount by interpolation processing. In order to simplify the description, a two-dimensional interpolation example is shown.

  As the target correction amount for the pixel indicated by N1, the target correction amount 93.3 is calculated by interpolation processing using the target correction amounts of 90 and 95, respectively. Similarly, the target correction amount for the pixel indicated by N2 can be calculated as 91.7. The target correction amount for the pixel indicated by N7 can be an average value of the target correction amount calculated using N3 and N4 and the target correction amount calculated using N5 and N6.

  The correction processing unit 123 corrects the gradation of the input image signal based on the target correction amount calculated and held by the correction amount calculation unit 121 and the target correction amount calculated by the interpolation processing by the interpolation processing unit, The corrected image signal is output to the output unit 13.

  The output unit 13 outputs the image signal output from the display unevenness correction unit 12 to the display unit 14.

  The display unit 14 has a structure in which a pair of glass substrates are opposed to each other, and a liquid crystal layer that is a liquid crystal material is formed in a gap between the plurality of pixel electrodes. A common electrode is provided on the other glass substrate of the TFT connected to the drain. The gate and source of the TFT are sequentially connected to the output stages of the gate driver and source driver, respectively. The display unit 14 controls the on / off state of the TFT of each pixel by the gate signal input from the gate driver, and applies the output voltage input from the source driver to the TFT of each pixel during the on period, thereby providing a liquid crystal substance. The image is displayed in gradation by controlling the light transmittance determined by the electro-optical characteristics.

  The interface unit 15 accepts various operation signals from the outside such as USB (Universal Serial Bus), DDC-CI (Display Data Channel Command Interface), and outputs the accepted operation signals to the control unit 16. The operation signal is, for example, an operation start (lights up), operation stop (lights off) of the display device 100, parameters for reproducing display unevenness of the other display devices, an operation (lighting) elapsed time, temperature of the other display device. , Humidity, and information such as the tilt of the display screen of other display devices. Note that the tilt of the display screen is, for example, a tilt before or after the display screen is viewed from the front, or a tilt within the vertical and horizontal planes.

  The control unit 16 is configured by a CPU, an MPU, or the like, and controls each component in the display device 100.

  The storage unit 17 displays its own display unevenness correction data 171 as an inherent correction amount for correcting the display unevenness of the display device 100, and the display device A as the intensity of the color component representing the display unevenness of the other display devices A, B, and C. Display unevenness data 172, display device B display unevenness data 173, display device C display unevenness data 174, and the like. The other display devices are not limited to three of A to C.

  The display unevenness correction data 171 of the device itself and the display unevenness data 172, 173, and 174 of the display devices A, B, and C each have the number of data corresponding to each point in the correction table shown in FIG. The display unevenness correction data 171 and display unevenness data 172, 173, and 174 of the display devices A, B, and C can be obtained in advance and stored in the storage unit 17.

  FIG. 11 is an explanatory diagram showing how display unevenness of the display device 100 is corrected. FIG. 11A shows a state of the display screen before the display unevenness is corrected. As shown in FIG. 11A, island-shaped display unevenness (luminance unevenness and color unevenness) appears in the periphery of the display screen.

  FIG. 11B shows a distribution of correction levels (target correction amounts) unique to the display device 100 so as to eliminate the display unevenness shown in FIG. The island-shaped target correction amount in the peripheral portion of FIG. 11B is increased (for example, 100%), and the target correction amount in the central portion is a value corresponding to the distribution of display unevenness. As a result, the gradation value of the input image signal is set to 100% for the pixels in the peripheral island-shaped portion, and for example, 90% and 95% are corrected for the pixels in the central portion. The gradation value can be reduced by the amount, and the luminance and color unevenness can be made uniform over the entire display screen.

  FIG. 11C shows a state in which the display unevenness is canceled by correcting the gradation of the image signal input at a specific correction level, and the luminance and color unevenness of the entire display screen become uniform. As shown in FIG. 11C, the luminance decreases after the correction, but an offset process can be performed to increase the luminance of the entire display screen.

  12 and 13 are explanatory views showing a state in which display unevenness of another display device is reproduced on the display device 100. FIG. FIG. 12A and FIG. 12B correspond to FIG. 11A and FIG. 11B, respectively, and the display screen of the display device 100 and the display device 100 before the display unevenness is corrected. This indicates a specific correction level (specific correction amount).

  FIG. 12C schematically shows display unevenness on the display screen of another display device A. FIG. Note that when other display devices are relatively inexpensive, there are many devices that do not have a non-uniformity correction function and the like, and the state of display non-uniformity distribution becomes noticeable compared to the display device 100. Further, even if a function for correcting unevenness is provided, sufficient correction cannot be performed and display unevenness cannot often be eliminated. In the present embodiment, such display unevenness of other display devices can be accurately reproduced.

  FIG. 12D schematically shows display unevenness data indicating the distribution of display unevenness of another display device A. FIG.

  FIG. 13E is a combination of FIG. 12B and FIG. 12D, and the target correction amount as a result of adding the display unevenness data of the display device A to the inherent correction level of the display device 100. Is schematically shown. 12 (b) corresponds to FIG. 5 (a), FIG. 12 (d) corresponds to FIG. 5 (b), and FIG. 13 (e) corresponds to FIG. 5 (c). .

  FIG. 13F schematically shows a target correction level (target correction amount) obtained by offsetting each target correction amount at a constant ratio so that the largest value among the target correction amounts becomes 100%. . FIG. 13 (f) corresponds to FIG. 6 (b).

  FIG. 13G shows another display device A on the display screen of the display device 100 by correcting the input image signal using the target correction level (target correction amount) shown in FIG. This shows how the display unevenness is reproduced.

  The above-described display unevenness reproduction processing can be applied not only to luminance unevenness but also to color unevenness, and color unevenness can also be reproduced by performing the above-described processing on each of the R, G, and B color components. is there. Further, even when the size of the display screen of the display device 100 is different from the size of the display screen of another display device, it can be dealt with by performing processing such as thinning out in the interpolation processing or thinning out using the correction table. be able to. In the example of FIG. 13G, the display unevenness of the display screen of another display device is displayed on the entire display screen of the display device 100. However, the display unevenness display method is not limited to this. .

  FIG. 14 is an explanatory diagram illustrating an example of a method for reproducing display unevenness of a plurality of other display devices. As shown in FIG. 14, a plurality of desired display areas can be set on the display screen of the display device 100, and the display unevenness reproduction screens of the other display devices A, B, and C can be displayed in each display area. In the case of simultaneously reproducing display unevenness of a plurality of other display devices, a plurality of display unevenness correction units 12 may be provided in advance, and each display unevenness correction unit 12 may reproduce the display unevenness. Thereby, the reproduction process can be performed in parallel, display unevenness of various characteristics can be displayed on the same screen, and the display process can be speeded up. In addition, it is possible to simultaneously display a screen that reproduces display unevenness and a screen that does not reproduce display unevenness on one display device 100 to check the actual operation. Further, display unevenness data of other display devices can be transmitted from an external processing device or the like through a communication line.

  The effects obtained by this embodiment will be described by comparing a conventional display device and the display device 100 according to the present invention. FIG. 15 is an explanatory diagram showing a problem in the case of a conventional display device, and FIG. 16 is an explanatory diagram showing a case of the display device 100 according to the present invention that can solve the conventional problem. In general, when creating content (moving images, still images, etc.) to be displayed on a display device, a display device (for example, a maker developer's content creation monitor) used for creating the content and a display device that actually displays the content ( For example, there is a difference in the distribution of display unevenness due to a difference in characteristics with the display monitor of the end user). In such a case, there arises a problem that the content intended by the manufacturer developer cannot be faithfully reproduced on the display monitor of the end user.

  For example, as shown in FIG. 15A, when a manufacturer developer creates contents (images) with a conventional display device, the contents (images) are for display by the end user as shown in FIG. 15B. The display unevenness of the monitor is not taken into consideration. Then, as shown in FIG. 15C, when the created content is actually displayed on the display monitor of the end user, display unevenness specific to the display monitor occurs, which is intended by the manufacturer developer. The content (image) cannot be displayed on the display monitor.

  On the other hand, when the display device 100 according to the present invention is used, display unevenness of the display monitor (display device A) of the end user can be reproduced on the display device 100 as shown in FIG. Therefore, content can be created in a state where display unevenness is reproduced. And as shown in FIG.16 (b), the content which considered the display nonuniformity can be provided to an end user. As shown in FIG. 16C, the end-user display monitor can display the content (image) as intended by the manufacturer developer.

  Next, the operation of the display device 100 according to the present invention will be described. First, a method for obtaining display unevenness data (for example, brightness unevenness) of another display device will be described. FIG. 17 is a flowchart illustrating a procedure of display unevenness data calculation processing of another display device. By the operator's operation, the gradation level of the other display device is set to a specific gradation level (S10), and a white image based on the set gradation level is displayed on the entire display screen (S11).

  The brightness of the displayed image is measured with a luminance meter (for example, a two-dimensional color luminance meter) by the operation of the operator (S12), and the display unevenness data is calculated by taking the measured luminance into predetermined application software. (S13). It is determined whether or not there is another display device (different model or the same model) (S14), and if there is another display device (YES in S14), that is, if the display unevenness data is further calculated, the operator By the operation of, the process after step S10 is repeated.

  When there is no other display device (NO in S14), when display unevenness data of a plurality of display devices of the same type is calculated, an average value of the display unevenness data is calculated (S15), and the calculated display unevenness data is displayed on the display device. 100 in the storage unit 17 (S16), and the process ends. Thereby, display unevenness data of a desired display device can be stored in the storage unit 17 of the display device 100 in advance. The above operation may be performed in a manufacturing process before shipment of the display device 100, or may be performed by the end user himself.

  FIG. 18 is a flowchart showing a procedure of processing for reproducing display unevenness of another display device on the display device 100. Upon receiving a user operation from the interface unit 15, the control unit 16 sets a display area on the display screen to reproduce display unevenness of another display device (S30). The control unit 16 calculates target correction data (target correction amount) by adding display unevenness data of another display device to the specific correction data (specific correction amount) (S31), and uses the calculated target correction data. Interpolation processing is performed (S32). In step S31, the offset process shown in FIG.

  The control unit 16 corrects the input image signal based on the target correction data (S33), and displays the corrected image signal on the display unit 14 to display other display devices on its own display screen. Unevenness is displayed (S34), and the process ends. As long as the image signal continues to be input, the processing after step S31 is repeated.

  In addition, the display unevenness distribution also changes due to changes in parameters such as the operation (lighting) elapsed time of the display device, the ambient temperature and humidity, and the tilt of the display screen (tilt before and after and tilt in the vertical and horizontal planes). By using the display unevenness data taking into account the variation of each parameter, the display unevenness distribution can be reproduced with higher accuracy. Hereinafter, a case where the operation elapsed time of another display device is considered will be described.

  First, a method for obtaining display unevenness data (for example, brightness unevenness) in consideration of the operation elapsed time of another display device will be described. Note that the operation elapsed time (display elapsed time) includes not only the time elapsed indicating the time elapsed from the power-on but also the time-dependent changes such as the number of uses and the frequency of use. FIG. 19 is a flowchart showing a procedure of display unevenness data calculation processing taking into account the operation elapsed time of another display device. By the operator's operation, the gradation level of the other display device is set to a specific gradation level (S50), and a white image based on the set gradation level is displayed on the entire display screen (S51).

  The operation elapsed time is measured by the operator's operation (S52), the luminance of the displayed image is measured with a luminance meter (for example, a two-dimensional color luminance meter) (S53), and the measured luminance is converted into predetermined application software. By taking in, display unevenness data is calculated in association with the operation elapsed time (S54).

  It is determined whether or not the designated time has passed (S55). If the designated time has not passed (NO in S55), the processes in and after step S52 are repeated. If the specified time has elapsed (YES in S55), it is determined whether there is another display device (different model or the same model) (S56). When there is another display device (YES in S56), that is, when the display unevenness data is further calculated, the processing after step S50 is repeated by the operation of the operator.

  When there is no other display device (NO in S56), when the display unevenness data of the plurality of display devices of the same type is calculated, the average value of the display unevenness data is calculated in association with the operation elapsed time (S57). The elapsed time and the calculated display unevenness data are stored in the storage unit 17 of the display device 100 (S58), and the process ends. Accordingly, display unevenness data of a desired display device can be stored in advance in the storage unit 17 of the display device 100 in association with the operation elapsed time. The above operation may be performed in a manufacturing process before shipment of the display device 100, or may be performed by the end user himself.

  FIG. 20 is a flowchart showing a procedure of processing for reproducing display unevenness when the display device 100 takes into account the elapsed operation time of another display device. In accordance with an instruction from the interface unit 15, the control unit 16 sets a display area that reproduces display unevenness of another display device on the display screen (S70). The control unit 16 sets an operation elapsed time of another display device by accepting a user operation (S71).

  The control unit 16 acquires display unevenness data corresponding to the set operation elapsed time of the other display device from the storage unit 17 (S72), and adds the acquired display unevenness data to the specific correction data (specific correction amount). Then, target correction data (target correction amount) is calculated (S73), and interpolation processing is performed using the calculated target correction data (S74).

  The control unit 16 corrects the input image signal based on the target correction data (S75), and displays the corrected image signal on the display unit 14 to display other display devices on its own display screen. Unevenness is displayed (S76), and the process is terminated. As long as the image signal continues to be input, the processing after step S73 is repeated.

  Thereby, even when the display unevenness of the other display device changes with the display elapsed time, the target correction amount for the desired elapsed time can be calculated, so the display unevenness of the other display device can be reduced regardless of the elapsed time. Can be accurately reproduced. The temperature may be room temperature, or the temperature in the display device 100 or the panel temperature.

  In the examples of FIGS. 19 and 20, the example in which the operation elapsed time of the other display device is used as a parameter has been described. However, instead of the operation elapsed time, the temperature, the humidity, the inclination of the display screen of the other display device, and the like. Can be processed similarly. As a result, even when the display unevenness of the other display device changes according to the temperature, the target correction amount for the desired temperature can be calculated. Therefore, the display unevenness of the other display device can be accurately determined regardless of the temperature. Can be reproduced. In addition, even when the display unevenness of other display devices changes according to humidity, the target correction amount for the desired humidity can be calculated, so that the display unevenness of other display devices can be accurately reproduced regardless of the humidity. can do. In addition, display unevenness in any installation environment can be reproduced by adapting to temperature and humidity. Furthermore, even when the display unevenness changes due to the tilt of the display screen of another display device, the target correction amount for the desired tilt can be calculated, so that the display screen of the other display device can be installed in any state. The display unevenness of other display devices can be accurately reproduced. In addition to actually measuring unevenness data for each parameter such as the operation elapsed time, temperature, humidity, and inclination of the display screen of another display device, a theoretical value may be calculated from each characteristic.

Embodiment 2
FIG. 21 is a block diagram showing the configuration of the display device 200 according to the second embodiment of the present invention. The difference from the first embodiment is that the display unevenness correction unit 12 includes a difference calculation unit 120 and that the storage unit 17 stores its own display unevenness data 170 instead of its own display unevenness correction data 171. is there. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and the description thereof is omitted.

  The difference calculation unit 120 is the display component data 170 representing the intensity of the color component representing the display unevenness on its display screen, and the intensity of the color component representing the display unevenness on the display screen of the other display device A. The difference from the display unevenness data 172 of the display device A is calculated. The same applies to the other display devices B and C. That is, based on the display unevenness of the display screen of the display device 200, the intensity of the color component representing the display unevenness of the display screens of the other display devices A, B, and C can be obtained. Is canceled, and only the intensity of the color component representing the display unevenness of the display screens of the other display devices A, B, and C on the display screen of its own display device 200 is extracted. The target correction amount is calculated based on the calculated difference. Thereby, the display unevenness of the other display devices A, B, and C can be reproduced more faithfully on its own display screen without unevenness.

  FIG. 22 is a flowchart illustrating a processing procedure for reproducing display unevenness of another display device in the display device 200 according to the second embodiment. In response to the user's operation, the control unit 16 sets a display area on the display screen to reproduce the display unevenness of the other display device (S101). The control unit 16 calculates the difference between the display unevenness data 170 of its own display device 200 and the display unevenness data of another display device to calculate target correction data (target correction amount) (S102), and the calculated target Interpolation processing is performed using the correction data (S103).

  The control unit 16 corrects the input image signal based on the target correction data (S104), and displays the corrected image signal on the display unit 14 to display other display devices on its own display screen. Unevenness is displayed (S105), and the process ends. As long as the image signal continues to be input, the processing after step S102 is repeated. In the above-described embodiment, the display unevenness correction unit 12 and the storage unit 17 are built in the display device 200. However, the present invention is not limited to this, and either the display unevenness correction unit 12 or the storage unit 17 or Both or a part of the configuration may be provided in a device such as a personal computer that outputs an image signal. According to the second embodiment, the offset process performed in the first embodiment is not necessary.

  As described above, according to the present invention, display unevenness of another display device can be reproduced on its own display screen, and display quality can be improved.

  In addition, since the content (image) can be created in consideration of the display unevenness of other display devices in advance, the display unevenness can be offset even with a relatively inexpensive device that is prominent in the display unevenness of the other display device. Since the content can be displayed, it is possible to realize a display monitor without display unevenness while suppressing the unit price of other display devices. The present invention is not limited to the case where the other display device is a general-purpose monitor, and can also be applied to a non-general-purpose monitor. For example, a display provided in a device such as a game machine or a car navigation system It can be applied to a wide range of monitors. In addition, the present invention can be applied to a field that is required to display content faithful to an advertiser's request such as digital signage, and is a useful technique.

  In addition, when a manufacturer developer creates content (images) to be displayed on a display monitor used by an end user, all display monitors that can be used by the end user are prepared in the past. There was a need to create content using. In addition, when a display monitor is under development, it was necessary to prepare a prototype display monitor and development equipment. This is because when the content is created without using the display monitor, the content intended by the creator cannot be displayed on the display monitor due to the influence of display unevenness of the display monitor. However, according to the present invention, it is necessary to prepare many display monitors for content creation, to prepare prototypes of display monitors under development, and to create content using each display monitor. Therefore, development efficiency can be improved, many redundant efforts are not required, and display monitor development can proceed without depending on the quality of the display monitor, thereby shortening the development period.

  Furthermore, when the same content (image) is created by sharing work among a plurality of creators, it is created between individual creators by using the display device according to the present invention as a creation monitor for each creator. There is also an effect that content does not become inconsistent.

  The display unevenness correction unit 12 described above can be configured by a dedicated hardware circuit, for example, an ASIC (Application Specific Integrated Circuit), but records a computer program code that defines a predetermined processing procedure on a recording medium. It is also possible to cause the computer to perform the same function by reading out the computer program code recorded on the recording medium and executing it by the CPU.

DESCRIPTION OF SYMBOLS 10 Input part 11 Conversion part 12 Display nonuniformity correction part 120 Difference calculation part (difference calculation means)
121 Correction amount calculation unit (target correction amount calculation unit)
122 Interpolation processing unit (target correction amount calculation unit)
123 Correction processing unit (correction means)
13 Output unit 14 Display unit (display means)
15 Interface unit 16 Control unit 17 Storage unit 170 Display unevenness data (display intensity)
171 Display unevenness correction data (specific correction amount)
172 Display unevenness data of display device A (display intensity)
173 Display unevenness data of display device B (display intensity)
174 Display unevenness data of display device C (display intensity)

Claims (8)

A display unevenness reproduction method for reproducing display unevenness of another display device on the display screen using a display device that displays an image corresponding to the intensity of the input image signal on the display screen,
In order to correct the display unevenness on the display screen, a specific correction amount for the intensity of the image signal is stored in advance in the storage means,
Display intensity representing the display unevenness of the other display device in the inherent correction amount stored in the storage means so that the display intensity representing the display unevenness of the display screen is equal to the display intensity representing the display unevenness of the other display device. The target correction amount for the intensity of the input image signal is calculated by the target correction amount calculation means,
Based on the target correction amount calculated by the target correction amount calculation means, the intensity of the input image signal is corrected by the correction means,
A display unevenness reproduction method, wherein an image corresponding to the corrected intensity is displayed on the display screen to reproduce display unevenness.
A display unevenness reproduction method for reproducing display unevenness of another display device on the display screen using a display device that displays an image corresponding to the intensity of the input image signal on the display screen,
The difference calculation means calculates the difference between the display intensity representing the display unevenness on the display screen and the display intensity representing the display unevenness of the other display device,
The target correction amount for the intensity of the image signal input based on the difference calculated by the difference calculating means so that the display intensity representing the display unevenness of the display screen is equal to the display intensity representing the display unevenness of the other display device. Is calculated by the target correction amount calculation means,
Based on the target correction amount calculated by the target correction amount calculation means, the intensity of the input image signal is corrected by the correction means,
A method for reproducing display unevenness, wherein an image corresponding to the intensity corrected by the correcting means is displayed on the display screen to reproduce display unevenness.
In a display device that displays an image corresponding to the intensity of an input image signal on a display screen,
Storage means for storing a specific correction amount for the intensity of the image signal to correct display unevenness on the display screen;
The target correction amount for the intensity of the input image signal is set to the inherent correction amount stored in the storage means so that the display intensity indicating the display unevenness of the display screen is equal to the display intensity indicating the display unevenness of another display device. Correction amount calculation means for calculating by adding display intensity representing display unevenness of other display devices;
Correction means for correcting the intensity of the input image signal based on the target correction amount calculated by the correction amount calculation means;
And a display unit that displays an image corresponding to the intensity corrected by the correction unit.
In a display device that displays an image corresponding to the intensity of an input image signal on a display screen,
Difference calculating means for calculating a difference between display intensity representing display unevenness on the display screen and display intensity representing display unevenness of the other display device;
Based on the difference calculated by the difference calculation means, the target correction amount for the intensity of the input image signal so that the display intensity representing the display unevenness of the display screen is equal to the display intensity representing the display unevenness of the other display device. A correction amount calculation means for calculating; a correction means for correcting the intensity of the input image signal based on the target correction amount calculated by the correction amount calculation means;
And a display unit that displays an image corresponding to the intensity corrected by the correction unit.
Storage means for storing the display intensity representing the display unevenness of the other display device in association with the display elapsed time of the other display device;
A reception means for receiving the display elapsed time setting;
The correction amount calculating means includes
5. The display according to claim 3, wherein a target correction amount is calculated based on a display intensity corresponding to a display elapsed time received by the receiving unit. apparatus.
Storage means for storing display intensity representing display unevenness of the other display device in association with temperature;
A receiving means for receiving the temperature setting;
The correction amount calculating means includes
5. The display device according to claim 3, wherein a target correction amount is calculated based on a display intensity corresponding to a temperature received by the receiving unit. 6.
Storage means for storing display intensity representing display unevenness of the other display device in association with humidity;
It has a reception means for receiving the humidity setting,
The correction amount calculating means includes
5. The display device according to claim 3, wherein a target correction amount is calculated based on a display intensity corresponding to the humidity received by the receiving unit. 6.
Storage means for storing the display intensity representing the display unevenness of the other display device in association with the inclination of the display screen of the other display device;
Receiving means for receiving the setting of the tilt of the display screen of the other display device;
The correction amount calculating means includes
The display device according to claim 3, wherein a target correction amount is calculated based on a display intensity corresponding to the inclination received by the receiving unit.

Images