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WO2018070013A1 - Dispositif de commande et programme - Google Patents

Dispositif de commande et programme Download PDF

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Publication number
WO2018070013A1
WO2018070013A1 PCT/JP2016/080364 JP2016080364W WO2018070013A1 WO 2018070013 A1 WO2018070013 A1 WO 2018070013A1 JP 2016080364 W JP2016080364 W JP 2016080364W WO 2018070013 A1 WO2018070013 A1 WO 2018070013A1
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WO
WIPO (PCT)
Prior art keywords
gaze area
gradation
unit
area
light amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/080364
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English (en)
Japanese (ja)
Inventor
昭憲 林
裕介 伴場
貴文 川上
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Eizo Corp
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Eizo Corp
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Filing date
Publication date
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Priority to PCT/JP2016/080364 priority Critical patent/WO2018070013A1/fr
Publication of WO2018070013A1 publication Critical patent/WO2018070013A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • the present invention relates to a control device and a program capable of making the luminance observed from the outside of the display device constant.
  • a digital signal processing unit includes an input signal characteristic for each pixel in the display unit and The pixel value correction is performed by applying a correction coefficient calculated based on the difference from the input signal characteristic of the reference pixel, and the backlight control unit is configured to detect high luminance corresponding luminance unevenness when the high luminance signal is output to the display unit.
  • a method of executing backlight luminance control using a backlight luminance correction coefficient calculated using a measurement result of luminance unevenness corresponding to low luminance when a low luminance signal is output is disclosed.
  • the luminance unevenness of the display device can be reduced by digital signal processing and backlight control, it can be applied only to a display device capable of dividing and controlling the backlight.
  • the present invention has been made in view of such circumstances, and it is possible to maximize the gradation expression capability of a display device while reducing luminance unevenness perceived by a user without performing split control of the backlight.
  • a control device and a program are provided.
  • a light amount adjustment unit that adjusts the light amount of the backlight of the display device, and a gaze area determination unit that determines a user's gaze area in the display unit of the display device, the light amount adjustment unit, The amount of light of the backlight is adjusted in accordance with the movement of the gaze area so that the observation luminance observed from the outside in the gaze area when a predetermined gradation value is input to the gaze area is constant.
  • a control device configured to do is provided.
  • the amount of light of the backlight is adjusted with the movement of the gaze area, and the observation luminance observed from the outside in the gaze area when a predetermined gradation value is input is constant. Therefore, the observation luminance viewed by the user can be kept apparently constant. For this reason, luminance unevenness felt by the user is reduced.
  • the number of gradations that can be input to the display device for unevenness correction it is possible to maximize the gradation expression capability of the display device.
  • the light amount adjustment unit readjusts the light amount of the backlight when the gaze area moves.
  • the light amount adjustment unit has a target whose observation luminance observed from outside is predetermined when a predetermined gradation value is input to the gaze area based on unevenness information of the display unit.
  • the light amount of the backlight is adjusted so as to obtain the observation luminance.
  • the light amount adjusting unit adjusts the light amount of the backlight based on an adjustment coefficient calculated based on the unevenness information and the target observation luminance.
  • the adjustment coefficient is a luminance ratio between the unevenness information and the gaze area.
  • a gradation correction unit that corrects a gradation level of input image data input to the display device
  • the gradation correction unit is configured to perform gradation levels of other areas based on unevenness information of the gaze area.
  • a gradation correction unit that corrects a gradation level of input image data input to the display device
  • the gradation correction unit has a gradation resolution of the gaze area higher than that of other areas.
  • the gradation level of the other area is corrected so as to be higher.
  • an acquisition unit that acquires the unevenness information is provided, and the gradation correction unit changes the unevenness information so that a gradation correction value in the gaze area becomes zero.
  • the gradation correction unit corrects the gradation level when the gaze area moves.
  • the gradation correction unit corrects the gradation level based on the observation luminance of the gaze area and the observation luminance of other areas.
  • the unevenness information is a distribution of observation luminance on the display unit.
  • the gaze area determining unit determines the gaze area based on coordinate data representing a position of a user's line of sight.
  • the computer functions as a light amount adjustment unit that adjusts a light amount of a backlight of the display device, and a gaze area determination unit that determines a user's gaze area in the display unit of the display device, and the light amount adjustment unit includes The amount of light of the backlight is adjusted in accordance with the movement of the gaze area so that the observation luminance observed from the outside in the gaze area becomes constant when a predetermined gradation value is input to the gaze area.
  • a control program configured as described above is provided.
  • the control device 1 includes a processing unit 10, a storage unit 20, an operation unit 30, a display unit 40, a backlight 50, and a communication unit 60.
  • the processing unit 10 executes various arithmetic processes, and is configured by, for example, a CPU.
  • the storage unit 20 stores various data and programs, and includes, for example, a memory, a cache, an HDD, an SSD, or the like.
  • the program may be preinstalled at the time of shipment of the control device 1, may be downloaded as an application from a site on the Web, or may be transferred from another information processing device by wireless communication.
  • the operation unit 30 operates the control device 1 and includes, for example, a motion recognition device using an operation switch, a touch panel, a keyboard, a voice input unit, a camera, and the like.
  • the display unit 40 displays various images (including still images and moving images), and is composed of a liquid crystal panel, for example.
  • the backlight 50 emits light from the back surface of the display unit 40.
  • the backlight 50 is driven by a driver (not shown).
  • the backlight 50 does not need to be divided and controls the entire light amount collectively.
  • the communication unit 60 transmits / receives various data to / from other information processing apparatuses, and is configured by an arbitrary I / O.
  • the bus 100 is composed of a serial bus, a parallel bus, and the like, and electrically connects each part to enable transmission / reception of various data.
  • the control device 1 is realized by, for example, a program incorporated in a display device in addition to an information processing device such as a PC or a server.
  • the control apparatus 1 is comprised by the liquid crystal display device (liquid crystal display), for example.
  • the control device 1 includes an operation unit 30, a display unit 40, a backlight 50 and a communication unit 60, a processing unit 10, and a storage unit 20.
  • the processing unit 10 includes a line-of-sight detection unit 101, a gaze area determination unit 102, a light amount adjustment unit 103, and a gradation correction unit 104.
  • the storage unit 20 includes a non-uniformity table storage unit 201, a light amount adjustment table storage unit 202, and a gradation correction table storage unit 203.
  • the line-of-sight detection unit 101 detects coordinate data representing the position of the user's line of sight from the line-of-sight detection device.
  • the line-of-sight detection device may be an arbitrary device provided in the control device 1, or may be a type of device that is worn by the user and that transfers coordinate data representing the user's line of sight to the control device 1. Good.
  • the gaze area determination unit 102 determines a user's gaze area on the display unit 40 based on the coordinate data detected by the gaze detection unit 101.
  • the gaze area is an area on the display unit 40 that the user is viewing.
  • the display unit 40 is divided into 25 areas (5 ⁇ 5), and by determining which area the position represented by the coordinate data is included, one of the 25 areas Is determined to be a gaze area.
  • the division number of the display unit 40 is arbitrary, and the vertical and horizontal division numbers may be different.
  • the light amount adjusting unit 103 is configured to adjust the light amount of the backlight 50 as the gaze area is moved, and the observation luminance observed from the outside in the gaze area when a predetermined gradation is input is constant. It is what is done.
  • the observation luminance is the luminance that is actually displayed by the display unit 40 and that is observed by an external sensor.
  • the processing by the light amount adjustment unit 103 is performed based on unevenness information.
  • the unevenness information is a distribution of observation luminance on the display unit 40.
  • the unevenness information includes, for example, the display unit 40 divided into a plurality of areas, and information assigned to each area, specifically, the observation luminance of each area obtained by dividing the display unit 40 into a plurality of areas. And the observation luminance of a predetermined area.
  • the unevenness information is not limited to this, and can be information represented by a predetermined function.
  • the information represented by a predetermined function is represented by a function f (x, y) using a two-dimensional variable (x, y) that specifies coordinates on the display unit 40.
  • the area interpolation function is used. Uneven information can be used.
  • coordinate data representing the position of the user's line of sight is detected by the line-of-sight detection device and the line-of-sight detection unit 101
  • unevenness amount f (x, y)
  • the unevenness information is a ratio between the observation luminance of a specific area when the display unit 40 is displayed at a predetermined intensity and the observation luminance of another area with respect to the observation luminance.
  • the unevenness table T0 (which will be described later with reference to FIG. 4) is a collection of luminance correction coefficients obtained for each area as a ratio. Then, the light amount adjustment unit 103 adjusts the light amount of the backlight 50 based on the adjustment coefficient calculated based on the unevenness information included in the unevenness table T0 and the target observation luminance. Specific processing by the light amount adjusting unit 103 will be described later with reference to FIGS.
  • the gradation correction unit 104 corrects the gradation level of the input image data input to the control device 1.
  • the gradation correction unit 104 corrects the gradation levels of other areas based on the unevenness information of the gaze area. Specifically, the gradation correction unit 104 changes the unevenness information so that the gradation correction value in the gaze area becomes zero. Then, by changing the unevenness information in all areas, a new unevenness table T3 (see FIG. 6) is generated from the unevenness table T0. Thereby, in the gaze area, the maximum performance can be exhibited without causing gradation collapse. Then, the corrected input image data becomes output image data and is displayed on the display unit 40. Specific processing by the gradation correction unit 104 will be described later with reference to FIGS. In the present embodiment, the gradation is assumed to be in 256 levels from 0 (minimum gradation) to 255 (maximum gradation).
  • the gradation correction unit 104 corrects the gradation level of the other area so that the gradation resolution of the gaze area is higher than the gradation resolution of the other area.
  • the gradation resolution of an input video signal to a display device is reduced by unevenness correction.
  • the gradation resolution of “0 to 255” is provided at the time of input to the display device, while such unevenness correction is performed.
  • the gradation resolution is “0 to 230 (approximately 25 reduction in video signal conversion)” when output from the display device.
  • the control apparatus 1 according to the present invention does not operate the input video signal because the gradation correction unit 104 realizes unevenness correction of the gaze position by luminance adjustment. That is, an image can be displayed on the display unit 40 without reducing the gradation resolution of the gaze area.
  • the unevenness table storage unit 201 stores a table representing luminance unevenness in 25 areas. Specifically, as shown in the unevenness table T0 of FIG. 4, when the display unit 40 is displayed at a specific intensity, the ratio of the observation luminance of each area when the observation luminance of the central area is set to 100 It is a table that summarizes. This is because the luminance unevenness occurs in the display unit 40 due to the characteristics of the display unit 40 and light leakage from the backlight 50 even in the same display device. In the present embodiment, a value corresponding to each area in the unevenness table T0 is referred to as unevenness information.
  • the numbers 1 to 5 on the horizontal axis are combined with the numbers 1 to 5 on the vertical axis, and (x: y) Identify.
  • the central area is (3: 3)
  • the uppermost leftmost area is (1: 1).
  • the luminance of the area (1: 1) is 80% with respect to the luminance of the area (3: 3).
  • the reference area need not be (3: 3), and the luminance of an arbitrary area may be set to 100 depending on the situation.
  • the light amount adjustment table storage unit 202 stores a light amount adjustment table T1 (see FIG. 4) used for light amount adjustment processing in the light amount adjustment unit 103.
  • the light amount adjustment table T1 stores an adjustment coefficient calculated based on unevenness information, and is generated using the unevenness information and the luminance ratio of the gaze area.
  • the light amount adjustment table T1 is generated using the luminance ratio between each area and a predetermined area based on the unevenness table T0. A specific method for generating the light amount adjustment table T1 will be described later with reference to FIG.
  • the gradation correction table storage unit 203 stores a gradation correction table T3 (see FIG. 6) used for gradation correction processing in the gradation correction unit 104.
  • the gradation correction table T3 is generated using a luminance ratio between each area and a predetermined area based on the unevenness table T0. A specific method for generating the gradation correction table T3 will be described later with reference to FIG.
  • FIG. 3 is a diagram illustrating an example of a flowchart for performing image processing by the control device 1 according to an embodiment of the present invention.
  • the light amount adjustment unit 103 adjusts the light amount of the backlight 50
  • the gradation correction unit 104 corrects the gradation level of the input image data. Processing is executed in parallel.
  • the light amount adjustment process and the gradation correction process are independent of each other, and the invention is established for each.
  • the line-of-sight detection unit 101 detects coordinate data representing the position of the user's line of sight. Then, the line-of-sight detection unit 101 outputs the coordinate data to the gaze area determination unit 102.
  • the gaze area determination unit 102 determines the user's gaze area on the display unit 40 based on the coordinate data detected by the gaze detection unit 101. Specifically, it is determined which of the 25 areas in the display unit 40 includes the position of the user's line of sight. When the position of the user's line of sight is on the boundary between a plurality of areas, an area close to (3: 3) (center area) may be determined as the gaze area. Then, the gaze area determination unit 102 outputs data representing the determined gaze area to the light amount adjustment unit 103 and the gradation correction unit 104.
  • the light amount adjustment unit 103 performs back movement according to the movement of the gaze area so that the observation luminance observed from the outside in the gaze area when a predetermined gradation value is input to the gaze area is constant.
  • the light quantity of the light 50 is adjusted.
  • the light amount adjustment unit 103 refers to the light amount adjustment table T1 stored in the light amount adjustment table storage unit 202, and represents the light amount of the backlight 50 corresponding to the gaze area determined by the gaze area determination unit 102. To decide. Then, data representing the light amount of the backlight 50 is output to the backlight 50.
  • the predetermined gradation value means a gradation value input to the display device.
  • the predetermined gradation value can be an arbitrary gradation, and can be a maximum gradation, a minimum gradation, an intermediate gradation, or the like.
  • the backlight 50 emits light with the adjusted light quantity.
  • the observation luminance in the gaze area always becomes the visual luminance value.
  • Such light amount adjustment processing is executed every time the gaze area moves. Thereby, even if a gaze area moves because a user's eyes
  • the gradation correction unit 104 corrects gradation levels other than the gaze area based on the unevenness information of the gaze area. Specifically, the gradation correction unit 104 changes the unevenness information so that the gradation correction value in the gaze area becomes zero. And the nonuniformity table T3 is produced
  • the gradation correction unit 104 outputs the unevenness table T3 newly generated from the unevenness table T0 to the gradation correction table storage unit 203.
  • the gradation correction table storage unit 203 stores the unevenness table T3.
  • the display unit 40 displays an image based on the corrected gradation level.
  • the gradation level of the other area is corrected based on the gaze area (in other words, the gradation level of the other area is corrected so that the gradation resolution of the gaze area is higher than the gradation resolution of the other area). By doing so, it is possible to improve the luminance uniformity of the entire display unit 40.
  • the control device 1 executes the light amount adjustment process and the gradation correction process every time the gaze area moves.
  • an area (1: 1) indicated by a thick frame in each of the tables T0 to T2 in FIG. 4 represents a gaze area.
  • the light amount adjustment process is a process for keeping the observation luminance in the gaze area constant when a predetermined gradation value is input.
  • an arbitrary observation luminance is set as the target observation luminance, and the backlight 50 is adjusted so that the observation luminance in the gaze area becomes the target observation luminance even when the gaze area moves. Thereby, even if a gaze area moves, the observation brightness
  • the method of determining the target observation brightness is not particularly limited.
  • the observation brightness in the central area (3: 3) when there is no light amount adjustment by the backlight 50 is set as the target observation brightness or is arbitrarily set by the user.
  • the value may be the target observation luminance.
  • the observation luminance in the central area (3: 3) is set as the target observation luminance when there is no light amount adjustment by the backlight 50.
  • the light amount adjustment processing according to the present embodiment is not executed, for example, when the light amount setting value of the backlight 50 (256 gradations) is 128, the light amount of the backlight 50 is 600 cd / cm 2 . Suppose there is. Since this light is attenuated when passing through the liquid crystal, the observation luminance is smaller than the light amount of the backlight 50.
  • the transmittance of the liquid crystal may vary depending on the location of the display unit 40.
  • the light intensity output from the backlight 50 varies depending on the location. As described above, the observation luminance may be different between the gaze area (1: 1) and the central area (3: 3).
  • the observation luminance in the gaze area (1: 1) that is actually visually recognized by the user is a predetermined target monitoring luminance (observation luminance in the central area (3: 3)).
  • the observation luminance felt by the user can be kept apparently constant.
  • the light amount of the backlight 50 is proportional to the light amount setting value of the backlight 50
  • the amount of light of the backlight 50 is recalculated every time the gaze area moves.
  • the observation luminance in the gaze area always matches the target observation luminance, and the observation luminance in the gaze area becomes constant.
  • the unevenness table T0 is acquired from the unevenness table storage unit 201. That is, the light amount adjustment unit 103 functions as an acquisition unit that divides the display unit 40 into a plurality of areas and acquires the unevenness table T0 assigned to each area. The unevenness information is acquired by acquiring the unevenness table T0.
  • an adjustment coefficient is calculated based on the luminance ratio between each area and the central area (3: 3) to generate a light amount adjustment table T1.
  • “middle information of the central area / unevenness information of each area” is calculated, and the light amount adjustment table T1 is generated.
  • Such a value is an adjustment coefficient calculated based on the unevenness information (unevenness table T0). That is, the adjustment coefficient is a coefficient representing how many times the unevenness information of the gaze area becomes the unevenness information of a predetermined area (center area (3: 3)) from a plurality of areas in the unevenness table T0. .
  • the adjustment coefficient is a coefficient calculated based on the luminance ratio between the unevenness information and the gaze area. In the present embodiment, a value obtained by rounding down the third decimal place is shown.
  • target observation brightness is acquired.
  • the target observation luminance is “300 cd / cm 2 ”.
  • the light amount setting value of the backlight 50 is calculated.
  • the backlight 50 does not execute the division control and adjusts the entire light amount collectively, so the light amount setting value of the backlight 50 for the gaze area (1: 1) is “ In the case of “160”, the backlight 50 as a whole is irradiated with light at a light amount setting value of “160”.
  • the light amount setting value after adjustment of each area in the table T ⁇ b> 2 is illustrated, but actually, only the gaze area (1: 1) needs to be calculated. Then, the light amount setting value is output to the light amount adjustment unit 103.
  • FIG. 5A shows the various tables T0 to T2 and the observation luminance when the gaze area is (1: 1)
  • FIG. 5B shows the various tables T0 to T2 and the observation luminance when the gaze area is (1: 2).
  • the observation luminance of each area in the case of FIG. 5A is “600 ⁇ 0.5 ⁇ ⁇ (unevenness information at T0) / 100 ⁇ ⁇ ⁇ (light intensity setting value of area (1: 1) at T2.
  • the observation luminance of each area in the case of FIG. 5B is “600 ⁇ 0.5 ⁇ ⁇ (unevenness information at T0) / 100 ⁇ ⁇ ⁇ (the light amount setting value of the area (1: 2) at T2).
  • the light amount adjustment process is executed, and even when the gaze area moves, the display device can be controlled so that the observation luminance in the gaze area becomes constant.
  • the light quantity adjustment part 103 can adjust the light quantity of the backlight 50 with the movement of a gaze area, and can make observation brightness observed from the outside in a gaze area constant.
  • a gaze area is acquired.
  • an area (1: 1) indicated by a thick frame in each of the tables T0 and T3 to T7 in FIG. 6 represents a gaze area.
  • the unevenness table T0 is acquired from the unevenness table storage unit 201. That is, the gradation correction unit 104 functions as an acquisition unit that divides the display unit 40 into a plurality of areas and acquires the unevenness table T0 assigned to each area. The unevenness information is acquired by acquiring the unevenness table T0.
  • the input gradation is acquired.
  • the input gradation is a different value for each area in the display unit 40.
  • the input gradation is 128 in the gaze area (1: 1), and the input gradation is 255 in the center area (3: 3).
  • the input gradation is input to the control device 1 by an image data input device (not shown).
  • a table T4 represents the input gradation for each area.
  • the table T3 is generated so that the value of the gaze area (1: 1) is 1, the input floor corresponding to the gaze area (1: 1) as a result of the process in S66.
  • the tone value remains the input tone “128” acquired in S64.
  • the input gradation acquired in S64 is different from the input gradation recalculated in S66.
  • a new table T6 is generated based on the values calculated for each area. That is, in the gradation correction process, the gradation of other areas is corrected based on the gaze area (1: 1).
  • the gradation correction unit 104 corrects the gradation level of the other area so that the gradation resolution of the gaze area is higher than the gradation resolution of the other area.
  • the output gradation is calculated. Specifically, as a result of the calculation in S66, in areas (5: 1) and (5: 4), the gradation exceeds the maximum gradation of 255. However, since such gradation cannot actually be output, the gradation exceeding 255 is uniformly corrected to 255, and a table T7 representing the final output gradation is generated. Then, the output gradation is output to the display unit 40.
  • the gradation correction unit 104 corrects the gradation levels of other areas based on the unevenness information of the gaze area.
  • the unevenness information is information assigned to each area by dividing the display unit 40 into a plurality of areas, and is a part of the unevenness table T0.
  • the unevenness information is a ratio between the observation luminance of each area and the observation luminance of a predetermined area.
  • the unevenness table T3 is generated from the unevenness information (unevenness table T0) so that the gradation correction value in the gaze area becomes 0. Thereafter, in S64, the gradation level is corrected based on the observation luminance of the gaze area and the observation luminance of other areas.
  • the unevenness information is not limited to this, and may be an observation luminance distribution on the display unit 40 without being divided into areas.
  • the gradation correction unit 104 corrects the gradation level of the other area so that the gradation resolution of the gaze area is higher than the gradation resolution of the other area.
  • the gradation level of the other area is corrected based on the gaze area. Therefore, it is possible to eliminate gradation collapse in the gaze area. As a result, the gradation expression of the gaze area is maximized for the user, so that the visibility is improved.
  • the control device 1 can be provided as a set top box connected to a PC, cloud computing, or computer.
  • an ASIC application specific integrated circuit
  • an FPGA field-programmable gate array
  • a DRP dynamic reconfigurable processor
  • a program for realizing the function of the control device 1 can be distributed via the Internet or the like.
  • control device 1 when the control device 1 is provided separately from the display device, the display unit 40 and the backlight 50 are not included in the control device 1. Furthermore, it is good also as a structure which implement
  • information represented by a predetermined function may be used as unevenness information.
  • the amount of unevenness corresponding to the coordinate data representing the position of the user's line of sight may be used, or the average value of the amount of unevenness included in the gaze area may be used.
  • the gaze area may be determined using only coordinate data representing the position of the line of sight of a specific user. . Furthermore, the gaze area may be determined based on coordinate data representing the line of sight of a plurality of users. For example, an average value of coordinate data representing the position of the line of sight of each user may be obtained, and the gaze area may be determined based on the coordinate data.
  • the present invention may be applied to a display device that can control the backlight 50 in a divided manner. In this case, more precise brightness adjustment is possible.
  • control device 10 processing unit 20: storage unit 30: operation unit 40: display unit 50: backlight 60: communication unit 100: bus 101: gaze detection unit 102: gaze area determination unit 103: light amount adjustment unit 104: floor Tone correction unit 201: Unevenness table storage unit 202: Light amount adjustment table storage unit 203: Tone correction table storage unit

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Abstract

Le but de la présente invention est de fournir un dispositif de commande et un programme permettant de maximiser la capacité d'expression de gradation d'un dispositif d'affichage tout en réduisant l'inégalité de luminance telle que perçue par un utilisateur, sans commande séparée d'un rétroéclairage. La présente invention concerne un dispositif de commande comprenant : une unité de réglage de niveau de lumière qui règle le niveau de lumière d'un rétroéclairage d'un dispositif d'affichage ; et une unité de détermination de zone de regard qui détermine, dans une unité d'affichage du dispositif d'affichage, la zone de regard d'un utilisateur. L'unité de réglage de niveau de lumière est conçue de façon à régler le niveau de lumière du rétroéclairage en fonction du déplacement de la zone de regard, de telle sorte qu'une luminance observée est uniforme, une telle luminance étant observée à partir d'une partie extérieure de la zone de regard lors de l'entrée d'une valeur de gradation définie à l'avance pour la zone de regard.
PCT/JP2016/080364 2016-10-13 2016-10-13 Dispositif de commande et programme Ceased WO2018070013A1 (fr)

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