WO2018030760A1 - Appareil et procédé de commande de la luminance d'un dispositif d'affichage à oled - Google Patents

Appareil et procédé de commande de la luminance d'un dispositif d'affichage à oled Download PDF

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Publication number
WO2018030760A1
WO2018030760A1 PCT/KR2017/008567 KR2017008567W WO2018030760A1 WO 2018030760 A1 WO2018030760 A1 WO 2018030760A1 KR 2017008567 W KR2017008567 W KR 2017008567W WO 2018030760 A1 WO2018030760 A1 WO 2018030760A1
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WIPO (PCT)
Prior art keywords
display device
user
luminance
brightness
distance
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PCT/KR2017/008567
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English (en)
Korean (ko)
Inventor
나근식
권제영
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(주)코텍
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Publication of WO2018030760A1 publication Critical patent/WO2018030760A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Definitions

  • the present invention relates to a brightness control device and method of an LED display device, and more particularly, to extend the life of the OLED display device by adjusting the brightness according to the distance and concentration of the user and the OLED display device.
  • the present invention relates to a luminance control device and a method of an LED display device.
  • the OLED is capable of realizing a color close to natural color, and has a characteristic that the response speed is 1000 times faster than the conventional LCD (LCD: Liquid Crystal Display) and does not require a backlight. As a lot has been applied.
  • LCD Liquid Crystal Display
  • an OLED display device displays an image by emitting light instead of a backlight unit (BLU) due to the nature of OLED
  • BLU backlight unit
  • the present invention was created to solve the above problems, by adjusting the luminance according to the distance and the concentration of the user and the OLED display device (OLED Display Device), SUMMARY OF THE INVENTION
  • An object of the present invention is to provide an apparatus and method for controlling luminance of an LED display device, which can prolong the service life.
  • an apparatus for controlling a brightness of an LED display device includes: a sensor unit configured to detect a distance from an LED display device to a user in front and recognize a face of the user; And analyzing the face of the user detected by the sensor unit to recognize the concentration of the user according to whether the ODL display is directly viewed, and to determine the luminance of the OLED display based on the detected distance and the concentration information of the user. And a control unit for adjusting.
  • control unit adjusts the brightness according to the distance and the concentration information of the user based on the setting information of the smart standing mode (SSM) mode, the setting information of the SSM mode, SSM on / off settings, At least one or more of the SSM strong / medium / weak setting, the minimum detection distance setting, the maximum detection distance setting, the response time setting.
  • SSM smart standing mode
  • the sensor unit the camera sensor for detecting the user's face in front of the ODL display device, the distance sensor for detecting the distance from the ODL display device to the user, and the illumination to detect the ambient illuminance It characterized in that it comprises at least one or more of the sensors.
  • the controller photographs the front user by using the dual camera sensor in a three-dimensional image, the front by the depth (Depth) of the photographed three-dimensional image Computing the distance to the user in the characterized in that.
  • control unit recognizes the user's face photographed by the sensor unit, and the concentration is high if the user is looking directly at the ODL display device, and the concentration is low if the user is not facing the OLED display device. It is characterized by judging.
  • the controller detects an ambient illuminance through an illuminance sensor of the sensor unit, and when the detected ambient illuminance is brighter than a preset first reference, the luminance of the OLED display device is greater than a default value. If the peripheral ratio is darker than the second reference, the luminance of the OLED display device is lowered by a preset ratio from the default value, and the peripheral illuminance is adjusted to the first reference and the second reference. In the case of, the brightness of the OLED display device is adjusted to a default value.
  • the controller divides the distance into at least three sections, and when the user is in the first section, adjusts the luminance to a preset maximum value regardless of the concentration of the user on the ODL display device, If the user is in the second section, the brightness is adjusted to a preset default value according to the user's concentration and distance to the ODL display device, and if the user is in the third section, it is correlated to the user's concentration on the ODL display device. It is characterized in that the luminance is adjusted to a predetermined minimum value without.
  • control unit waits for a predetermined response time and executes brightness adjustment in order to prevent an undesired frequent brightness adjustment operation when adjusting the brightness according to the change in concentration.
  • control unit when adjusting the brightness according to the change in the concentration, the brightness corresponding to the brightness reduction amount set according to the user concentration in the Smart Standing Mode (SSM) mode at the default value for the brightness adjustment according to each section It is characterized by the downward adjustment.
  • SSM Smart Standing Mode
  • a method of controlling a brightness of an LED display device including: checking whether a smart standing mode (SSM) mode of the LED display device is set to ON; If it is determined that the SSM mode is set to ON, the control unit recognizes a user's face through a sensor unit and detects a distance from the ODL display device to the user; Determining a current section in which the user is located based on the result; And according to the determined current section, the controller adjusts the brightness of the LED display device to a default value set based on distance information, or additionally reflects the user's concentration information to the distance information of the LED display device. Adjusting the brightness; characterized in that it comprises a.
  • SSM smart standing mode
  • the controller adjusts the brightness of the ODL display device to a preset maximum value regardless of the concentration of the user's ODL display device. It is characterized by.
  • the controller determines the concentration of the user's OID display device, and if the concentration of the user is low, the brightness default value corresponding to the distance.
  • the luminance is adjusted downward in response to the " increased luminance reduction amount according to the strong / medium / weak mode of the SSM.
  • the controller is configured to adjust the brightness of the ODL display device to a predetermined minimum regardless of the concentration of the user's ODL display device. It features.
  • the smart standing mode (SSM) mode is a method of adjusting the brightness of the OLED display device according to whether or not the user is focused on the OLED display, and the user and the LED Combining the method of adjusting the brightness of the OLED display device according to the distance between the display devices, the mode for respectively adjusting the brightness for each preset section based on the distance to the OLED display device. It is characterized by.
  • the present invention is to adjust the brightness according to the distance and concentration of the user and the OLED display device, thereby extending the life of the OLED display device.
  • FIG. 1 is an exemplary view showing a schematic configuration of a luminance control device of an LED display device according to an embodiment of the present invention.
  • FIG. 2 is an exemplary view illustrating a graph for explaining a method for controlling luminance of an LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention
  • FIG. 3 is an exemplary view showing a table in which a ratio of decreasing luminance at a default value according to the concentration of a user when controlling the brightness of an LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention is shown. .
  • SSM smart standing mode
  • FIG. 4 is an exemplary diagram for describing a method of recognizing a distance and a concentration level from an ODL display device to a user in FIG. 1.
  • FIG. 5 is an exemplary view for explaining the determination of the concentration by analyzing the face of the user photographed using the camera sensor in FIG.
  • FIG. 6 is an exemplary view showing a basic information setting screen for adjusting the brightness of an LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention.
  • SSM smart standing mode
  • FIG. 7 is a flowchart illustrating a brightness control method of an LED display device according to an embodiment of the present invention.
  • FIG. 1 is an exemplary view showing a schematic configuration of a luminance control device of an LED display device according to an embodiment of the present invention.
  • the OLED display device 100 includes a sensor unit 110, a controller 120, a luminance driver 130, and an OLED display unit 140. It includes.
  • the sensor unit 110 detects a face of a user in front of the ODL display device 100 (for example, a camera sensor), a sensor for detecting a distance (for example, a distance sensor), and a peripheral illumination sensor. It includes at least one or more of the sensors (eg, illuminance sensor) (see Figure 4).
  • FIG. 4 is an exemplary diagram for describing a method of recognizing a distance and concentration from an ODL display device to a user in FIG. 1, and FIGS. 4A and 4C illustrate a user using a distance sensor. Recognizing the distance to and detecting the case of high concentration of the user (a) and the case of low concentration (c) from the image taken using the camera sensor, Figures 4 (b) and (d) Calculates the distance to the user based on the depth of the 3D image photographed using the dual camera sensor, and the user's concentration is high from the image photographed using the dual camera sensor (b) and the case where the concentration is low It is shown to detect (d).
  • the controller 120 recognizes the user's face by using the camera sensor to recognize whether the user is looking directly at (or facing the front) the ODL display device 100 according to the present embodiment.
  • the controller 120 may determine that the concentration is high when the user is facing the OID display device 100 and that the concentration is low when the user does not face the OID display device 100.
  • the camera sensor may be a dual camera sensor.
  • the controller 120 may detect a distance to the front user by the depth of the photographed 3D image. (See FIGS. 4B and 4D), the dual camera sensor may replace the distance sensor.
  • the illuminance sensor detects an ambient illuminance of the LED display device 100 according to the present embodiment.
  • the luminance driver 130 adjusts the luminance of the OLED display 140 under the control of the controller 120.
  • the control unit 120 may adjust the luminance of the OLED display unit 140 to a predetermined ratio upward from the default value. If it is darker than the second criterion, the luminance of the OLED display 140 may be adjusted down to a preset ratio from the default value. When the peripheral illuminance is between the first reference and the second reference, the luminance of the OLED display 140 may be adjusted to a default value.
  • control unit 120 adjusts the brightness of the OLED display unit 140 according to the distance from the ODL display device 100 according to the present embodiment to the user in front of the display device, and adjusts the distance by at least two.
  • User's inconvenience caused by the change in brightness by adjusting the brightness of OLED display unit 140 in different ways for each section by dividing into more than one section (for example, 1st section, 2nd section, 3rd section) (Or rejection) can be minimized and the life of the OLED display 140 can be extended (see FIG. 2).
  • the three sections for adjusting the brightness are merely divided sections for convenience of description. Therefore, according to an embodiment, it may be set to more sections or fewer sections.
  • the controller 120 analyzes the face of the user photographed using the camera sensor to recognize whether the user is facing the ODL display 100 (that is, focusing on the ODL display). 5, the brightness of the OLED display unit 140 may be adjusted according to whether the user is facing the ODL display device 100.
  • FIG. 5 is an exemplary diagram for explaining determination of concentration by analyzing a face of a user photographed using a camera sensor in FIG. 1.
  • the controller 120 adjusts the luminance of the OLD display unit 140 upward (or adjusts the default value). If the user is not facing (or focusing) the ODL display device 100, the controller 120 adjusts the luminance of the OLD display unit 140 downward (or lower than the default value).
  • the method of adjusting the brightness of the OLED display unit 140 may be performed alone or in accordance with whether the user is facing (or focusing) the ODL display device 100.
  • the display may be performed in combination with a method of adjusting the brightness of the OLED display unit 140.
  • the brightness of the OLED display unit 140 is adjusted according to whether or not the user is facing (or focusing) the OLED display device 100, and the distance may vary depending on the distance.
  • a method of adjusting the brightness of the OLED display unit 140 by combining a method of adjusting the brightness of the LED display unit 140 hereinafter, in the present embodiment, such a brightness control method is referred to as a smart standing Mode
  • FIG. 2 is an exemplary view illustrating a graph for explaining a method for controlling luminance of an LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention.
  • SSM smart standing mode
  • the ODL (regardless of whether the user faces the ODL display device 100 or not) is displayed.
  • OLED The brightness of the display unit 140 is adjusted to a preset maximum value (eg, preset 2), and in a second section (eg, a section between the first point and the second point), the user displays an ODL display device ( Directly viewing (or concentrating) 100 may adjust the luminance of the OLED display unit 140 to a default value according to distance, and if the user does not directly face (or concentrate) the ODL display device 100, The luminance of the OLED display 140 is lowered by a predetermined ratio from a default value according to the distance, and in a third section (for example, a section above the second point), the user controls the ODL display device 100. Whether you look straight (or focus) Is the five LED (OLED), a predetermined brightness of the display unit 140, the minimum value (for example, preset 1) is
  • the adjustment of the luminance according to the concentration may be immediately performed when the condition is satisfied (that is, the detection of the change in concentration), but to prevent unwanted frequent luminance adjustment operations.
  • the controller 120 waits for a predetermined response time (for example, 5 seconds) and then executes luminance adjustment.
  • the SSM (Smart Standing Mode) brightness control method is the default for the brightness control of the OLED display unit 140 according to the SSM mode setting (eg, strong, medium, weak) method.
  • the luminance reduction amount (or luminance reduction rate) may be set differently from the value (see FIG. 3).
  • FIG. 3 is an exemplary view showing a table in which a ratio of decreasing luminance at a default value according to the concentration of a user when controlling the brightness of an LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention is shown. to be.
  • the controller 120 defaults to the user's distance according to the user's distance. If the concentration of the user decreases while adjusting the brightness, the brightness may be adjusted downward by the amount of brightness reduction set in the table as shown in FIG. In this case, the controller 120 may adjust the luminance downward by the amount of luminance reduction set in the table as shown in FIG. 3B instead of the default value (eg, preset 1).
  • the luminance reduction amount in the second and third sections is described as an example, but the luminance reduction amount may also be applied to the first interval.
  • the luminance reduction amount described in FIG. 3 is described by way of example, the luminance reduction amount according to the strong, medium and weak modes of the smart standing mode (SSM) may be set to any other value.
  • FIG. 6 is an exemplary view showing a basic information setting screen for adjusting the brightness of the LED display device in a smart standing mode (SSM) method according to an embodiment of the present invention.
  • SSM smart standing mode
  • the user can apply the SSM method (whether SSM is ON or OFF), the amount of luminance reduction that can be set (eg, strong, medium, or weak) when the SSM method is applied (on), and the application of the SSM method
  • a first point minimum detection distance: 50 cm
  • a second point for classifying an application section of the SSM method
  • a response time for example, 5 seconds
  • each item set by the user eg, SSM on / off setting, SSM strong, medium, weak setting, minimum detection distance setting, maximum setting
  • the detection distance setting, the response time setting, etc. are set by way of example. Therefore, the value of each item may be set to different values according to embodiments.
  • FIG. 7 is a flowchart illustrating a brightness control method of an LED display device according to an exemplary embodiment of the present invention.
  • the controller 120 checks whether the smart standing mode (SSM) mode of the LED display device 100 according to the present exemplary embodiment is set to ON (S101).
  • SSM smart standing mode
  • the smart standing mode (SSM) mode is a method of adjusting the brightness of the OLED display unit 140 according to whether a user is facing (or focusing) the ODL display device 100, and The brightness of the OLED display 140 is adjusted by combining a method of adjusting the brightness of the OLED display 140 according to a distance between a user and the OLED display 100. Means mode.
  • the controller 120 recognizes the user's face through the sensor unit 110 and the OLED display device. The distance from 100 to the user is detected (S102).
  • the controller 120 determines whether the luminance control section (eg, the first section, the second section, and the third section) has been changed based on the distance information among the detected information (S103).
  • the luminance control section eg, the first section, the second section, and the third section
  • step S103 determines the changed section (ie, the current section) (S104).
  • the controller 120 waits according to a predetermined response time (for example, 5 seconds).
  • the luminance of the OLED display unit 140 is adjusted to a preset maximum value (eg, preset 2) regardless of whether the user looks directly at (or concentrates on) the ODL display device 100 (S106). .
  • the control unit 120 faces the user to the OID display device 100 (or concentrates). (S105). If the user is facing (or concentrating) the ODL display device 100 according to the result of the determination (S105) (YES in S105), the controller 120 may determine a predetermined response time (eg, 5 seconds). After waiting, the luminance of the OLED display 140 is adjusted to a default value according to the distance (S107).
  • a predetermined response time eg, 5 seconds
  • the controller 120 may advance in advance. After waiting according to the specified response time (for example, 5 seconds), the luminance is adjusted downward in response to the "luminosity default value corresponding to the distance-the amount of the luminance reduction according to the SSM intensity, medium and weak mode" (S108). .
  • the controller 120 waits according to a predetermined response time (for example, 5 seconds), and then the user Irrespective of whether the OLED display device 100 is directly facing (or focused) the luminance of the OLED display unit 140 is adjusted to a preset minimum value (eg, preset 1).
  • a predetermined response time for example, 5 seconds
  • the predetermined luminance reduction amount (or luminance reduction rate) is applied as described with reference to FIG. 3. can do.
  • the luminance of the LED display device 100 is set to a minimum value (for example, preset 1) without turning off the brightness of the LED display device 100% (dark power state) in the third section. It is recognized that 100) is operating normally.
  • the present embodiment adjusts the luminance according to the distance between the user and the OLED display device 100 and the concentration of the user, thereby minimizing the discomfort or rejection of the user due to the change in luminance, There is an effect to extend the life of the LED display unit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un appareil et un procédé de commande de la luminance d'un dispositif d'affichage à OLED, l'appareil comprenant: une unité de capteur pour détecter la distance depuis le dispositif d'affichage à OLED jusqu'à un utilisateur devant celui-ci, et reconnaître le visage de l'utilisateur; et une unité de commande pour analyser le visage de l'utilisateur détecté par l'intermédiaire de l'unité de capteur, reconnaître le degré de concentration de l'utilisateur en fonction du fait que l'utilisateur visualise directement ou non le dispositif d'affichage à OLED, et commander la luminance du dispositif d'affichage à OLED sur la base de la distance et des informations détectées sur le degré de concentration de l'utilisateur.
PCT/KR2017/008567 2016-08-12 2017-08-08 Appareil et procédé de commande de la luminance d'un dispositif d'affichage à oled WO2018030760A1 (fr)

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KR1020160103288A KR101853402B1 (ko) 2016-08-12 2016-08-12 오엘이디 표시 장치의 휘도 제어 장치와 방법
KR10-2016-0103288 2016-08-12

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KR20210017247A (ko) * 2019-08-07 2021-02-17 삼성전자주식회사 휘도를 조절하는 전자 장치 및 그 휘도 조절 방법

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JP2011203707A (ja) * 2010-03-24 2011-10-13 Samsung Electronics Co Ltd ディスプレイ装置及びディスプレイ装置の制御方法
KR101360471B1 (ko) * 2012-02-29 2014-02-11 한국과학기술원 사용자의 반응에 기반한 동적 콘텐츠 재생 제어 방법 및 장치
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