KR20100035028A - Apparatus of controlling luminance precisely along optical circumstance and method thereof - Google Patents

Apparatus of controlling luminance precisely along optical circumstance and method thereof Download PDF

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KR20100035028A
KR20100035028A KR1020080094317A KR20080094317A KR20100035028A KR 20100035028 A KR20100035028 A KR 20100035028A KR 1020080094317 A KR1020080094317 A KR 1020080094317A KR 20080094317 A KR20080094317 A KR 20080094317A KR 20100035028 A KR20100035028 A KR 20100035028A
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value
luminance
brightness
correction target
target value
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Korean (ko)
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KR100956860B1 (en
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한상일
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주식회사 한솔비전
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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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • 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

Abstract

PURPOSE: An apparatus of controlling luminance precisely according to ambient luminance are provided to control the luminance of an LED board by using a data related to peripheral conditions to control the luminance of the board. CONSTITUTION: In an apparatus of controlling luminance precisely according to ambient luminance, a measured value reads from a CdS sensor(S10). The average of the measured value excepting the maximum value and the minimum value is calculated(S20). The measured mean value is compared with the mean value which is measured at the previous time. If the measured mean value is changed over a reference level, the mean value is set as a correction target value of the display panel(S30-S40). The integration brightness adjustment is operates based on the correction target value(S50).

Description

주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절방법 및 장치{Apparatus of controlling luminance precisely along optical circumstance and method thereof}Apparatus of controlling luminance precisely along optical circumstance and method according to ambient brightness

본 발명은 주변 밝기에 따라 휘도의 정밀한 제어가 가능한 전광판용 휘도 조절방법 및 그 장치에 관한것으로서, 구체적으로는 다수의 황화카드뮴셀 센서(CDS)를 이용하여 주변의 일시적인 광학적 잡음을 제거하고 정확한 광학적 환경을 측정하여 이를 전광판의 휘도 조절에 이용하는 방법 및 장치에 관한 것이다.The present invention relates to a brightness control method and apparatus for an electric signboard that can precisely control the brightness according to the ambient brightness. Specifically, a plurality of cadmium sulfide cell sensors (CDS) are used to remove temporary optical noise in the vicinity and to accurately The present invention relates to a method and apparatus for measuring an environment and using the same to adjust brightness of an electric sign.

최근 LED전광판은 흔희 볼 수 있는 운동경기장 등에서 뿐만 아니라 자동차 도로 상의 교통량, 도로 상황 등을 표시하기 위한 교통정보 전광판이나, 일반 가게 등의 간판 등으로도 사용되고 있는 실정이며 각종 정보가 점차적으로 중요한 위치를 점해가고 있는 현 상황에서 그 쓰임새는 날로 다양해지고 양적으로도 폭발적으로 증가하고 있다.Recently, LED signboards are used not only in sports stadiums, which are commonly seen, but also as traffic signboards for displaying traffic volume and road conditions on automobile roads, and signs such as general shops. In the current situation, its use is diversified and exploding in quantity.

일반적으로 LED전광판은 실외에서 사용되는 경우 즉, 옥외용 중 광고용(경기장 전광판, 홍보용 포함)과 고속도로(국도포함)용 전광판 및 오염표출용 전광판 등은 주, 야간을 구분하여 2단계로 그 휘도를 조절하고 있다. 그러나 현실적으로는 대낮의 경우에도 밝기의 차이가 심하여 그 밝기의 차이에 의해 전광판에 나타나는 정보의 가독성이 현저하게 떨어지는 경우가 많으며, 반대로 심야에 주변이 심하게 어두운 경우에는 오히려 전광판의 빛으로 인하여 운전자 등의 시야를 방해하는 경우도 있었다.In general, LED signboards are used outdoors, that is, advertising signs (including stadium signboards and promotional signs), highway signs (including national roads), and pollution signboards are divided into two levels by dividing day and night. Doing. However, in reality, even in daylight, the difference in brightness is so severe that the readability of the information displayed on the signboard is often significantly reduced.In contrast, when the surroundings are very dark at night, rather than the driver's light due to the signboard's light. In some cases, the vision was obstructed.

특히 고속도로용 전광판의 경우에는 전광판 시스템 적으로 10단계를 조절할 수 있도록 되어있으나, 밝기의 변화에 따라 운영자가 각 전광판을 일일이 밝기 설정을 하지 못하여 단순히 전광판 내부에 있는 시스템에 의하여 주, 야간 2단계로만 운영되고 있는 실정이다.In particular, in the case of highway signboards, the ten levels can be adjusted by the signboard system.However, the operator cannot set the brightness of each signboard according to the change of brightness. It is operating.

실내에서 사용되는 LED전광판의 경우에는 이러한 2단계 휘도조절장치조차 부착하지 않고 납품하는 경우가 대부분이어서 전광판으로부터 특정 정보를 얻으려는 일반인들에게 주변의 상황에 맞는 알맞은 휘도의 밝기로 정보를 나타내기가 어려운 면이 있었다. 또한 과도한 휘도로 정보등을 LED 전광판에 표출하는 경우에는 보행자의 시야를 가릴수도 있으며, 경제적인 면에서도 필요이상의 전력을 사용하게 되는 문제점이 있었다.In the case of LED signboards used indoors, these two-stage brightness controllers are often supplied without attachment, making it difficult to display the information with the brightness of the appropriate brightness to the general public to obtain specific information from the signboard. There was a cotton. In addition, when the information light is displayed on the LED display with excessive brightness, it may obscure the view of the pedestrian, and there is a problem in that it uses more power than necessary in terms of economy.

한편 이러한 휘도 조절을 위하여 센서를 통해 빛의 밝기를 감지하고 이에 따라 LED전광판의 휘도를 조절하려는 제안이 있었다. 그러나 이러한 경우에도 현실적 으로는 자동차나 가로등의 불빛에 의하여 LED 전광판의 휘도 조절장치가 오작동하는 것을 방지하기 위하여 임시방편으로 테이프 등을 이용하여 센서의 일부를 가린 상태로 사용하고 있는 실정이다.On the other hand, there is a proposal to detect the brightness of the light through the sensor and to adjust the brightness of the LED sign according to the brightness control. However, even in such a case, in order to prevent the brightness control device of the LED signboard from malfunctioning by the light of a car or a street light, a part of the sensor is covered with a tape or the like as a temporary measure.

상기와 같은 문제점을 해결하기 위한 것으로서,As to solve the above problems,

본 발명의 과제는 주변의 광학적 환경을 보다 정밀하게 감지할 수 있는 수단을 제공하는데 있다.An object of the present invention is to provide a means for more accurately detecting the optical environment of the surroundings.

또한 본 발명의 과제는 감지된 광학적 환경에 대한 데이터를 이용하여 적절한 LED전광판의 휘도 조절을 하는 수단을 제공하는 데 있다.It is also an object of the present invention to provide a means for adjusting the brightness of the appropriate LED sign using data on the sensed optical environment.

상술한 기술적 과제를 달성하기 위하여,In order to achieve the above technical problem,

본 발명에 의한 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절방법은 아래와 같은 단계를 포함한다.According to the present invention, a brightness control method for a signboard capable of precise control of brightness according to ambient brightness includes the following steps.

(a) 단계에서는 일정시간 마다 CDS 센서로부터 측정치를 읽어들인다.In step (a), measurements are read from the CDS sensor at regular intervals.

(b) 단계에서는 읽어들인 측정값 중 최대치와 최소치를 제외한 나머지 값들의 평균을 산출한다.In the step (b), the average of the remaining values except for the maximum and minimum values is calculated.

(c) 단계에서는 직전의 평균값과 비교하여 상기 측정치 평균값이 기준치 이 상 변화했는지 여부를 판단하여 기준치 이하인 경우 상기 (a)단계로 회귀한다.In step (c), it is determined whether the measured value average value has changed by more than the reference value compared with the previous average value, and if it is less than the reference value, the process returns to step (a).

(d) 단계에서는 상기 평균값을 전광판 휘도 수정목표치로 설정한다.In the step (d), the average value is set as the luminance correction target value.

(e) 단계에서는 상기 수정목표치를 기준으로하여 적분휘도조절을 하고 상기 (a)단계로 회귀한다.In step (e), the integral luminance is adjusted based on the corrected target value, and the process returns to step (a).

또한 상기 (d)단계에서는,In the step (d),

(d1) 전광판 후면쪽에 설치된 센서의 평균 측정값이 전광판 전면쪽에 설치된 센서의 평균 측정값보다 기준치 이상 큰 경우 상기 휘도 수정목표치를 증가시킨다.(d1) If the average measured value of the sensor installed on the back side of the display board is larger than the reference value than the average measured value of the sensor installed on the front side of the billboard, the luminance correction target value is increased.

나아가 상기 (d1)단계 이전에, 휘도 수정목표치가 휘도제어가능범위를 벗어나는지를 판단하여 휘도제어가능범위를 벗어나는 경우에는 상기 (d1)단계를 생략할 수 있다.Furthermore, before the step (d1), if the brightness correction target value is out of the brightness controllable range, the step (d1) may be omitted if it is out of the brightness controllable range.

한편, LED 전광판에 있어서 본 발명에 의한 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절장치는 CDS센서, 제어부, 스캔컨트롤러를 포함한다.On the other hand, in the LED display board according to the present invention according to the ambient brightness, the brightness control device for the luminance can be controlled includes a CDS sensor, a control unit, a scan controller.

CDS센서는 일정시간마다 상기 LED 전광판 주변의 밝기를 감지한다.The CDS sensor detects the brightness around the LED display board at regular intervals.

제어부는 상기 CDS센서로부터 밝기 측정값을 전달받아 읽어들인 측정값 중 최대치와 최소치를 제외한 나머지 값들의 평균을 산출하고, 직전의 평균값과 비교하여 상기 측정치 평균값이 기준치 이상으로 변동된 경우 휘도 수정목표치를 변경 시킨다.The controller calculates an average of the remaining values except the maximum value and the minimum value among the measured values received by receiving the brightness measurement value from the CDS sensor, and compares the average value of the measured value when the average value of the measured value is changed by more than the reference value. Change it.

스캔컨트롤러는 상기 휘도 수정목표치를 이용하여 상기 LED 전광판의 휘도를 적분식으로 조절한다.The scan controller integrally adjusts the brightness of the LED display board using the brightness correction target value.

또한 상기 CDS 센서는 상기 LED 전광판의 전면과 후면에 배치하고, 상기 제어부는 전광판 전면쪽에 설치된 센서의 평균 측정값보다 기준치 이상 큰 경우 상기 휘도 수정목표치를 증가시킬 수 있다.In addition, the CDS sensor is disposed on the front and rear of the LED sign, the control unit may increase the brightness correction target value when the reference value is larger than the average measured value of the sensor installed on the front of the sign.

나아가 상기 제어부는 휘도 수정목표치를 휘도제어가능범위에서만 변경시킬 수 있다.Further, the controller may change the luminance correction target value only in the luminance controllable range.

상술한 본 발명의 구성상의 특징으로부터,From the structural features of the present invention described above,

본 발명에 의한 LED 전광판용 휘도조절 장치는 주변의 광학적 환경에 관한 데이터를 충분히 감지할 수 있도록 한다.The luminance control device for LED signboard according to the present invention allows to sufficiently detect data about the optical environment of the surroundings.

또한 본 발명은 감지한 광학적 데이터를 이용하여 주변의 광학적 잡음을 제거한 상태에서 주변 환경에 적합하도록 LED 전광판의 휘도를 제어할 수 있도록 한다.In addition, the present invention makes it possible to control the brightness of the LED display board to suit the surrounding environment in the state of removing the optical noise of the surroundings by using the sensed optical data.

이하 첨부된 도면을 참조하여 본 발명의 실시예를 설명한다.BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

본 실시예에 의한 전광판용 휘도 조절장치는 [도 1]에 도시된 바와 같이 크게 복수개의 CDS센서(60), 제어부(50), 스캔컨트롤러(20) 및 LED 패널(25)로 구성된다.As shown in FIG. 1, the luminance adjusting device for the electronic display board according to the present exemplary embodiment includes a plurality of CDS sensors 60, a controller 50, a scan controller 20, and an LED panel 25.

먼저 [도 1]을 참조하여 CDS센서(60)에 대하여 설명한다.First, the CDS sensor 60 will be described with reference to FIG. 1.

CDS센서(60; 황화카드뮴셀)는 전기저항을 이용하여 빛의 강약을 측정하는 센서이다. 본 실시예에서는 이러한 CDS센서(60)를 복수개를 구비하여 전광판의 앞면과 뒷면의 광량을 측정하게 된다. CDS센서(60)가 일정시간마다 빛의 세기를 측정하여 후술할 신호변환부(53)로 측정값을 넘겨준다.The CDS sensor 60 (cadmium sulfide cell) is a sensor for measuring the intensity of light using an electrical resistance. In this embodiment, the plurality of CDS sensors 60 are provided to measure the amount of light on the front and rear surfaces of the electronic display. The CDS sensor 60 measures the light intensity every predetermined time and passes the measured value to the signal converter 53 to be described later.

[도 1]을 참조하여 제어부(50)에 대하여 설명한다. 제어부(50)는 다시 전광판제어부(51; control module), 중앙처리부(52) 및 신호변환부(53)로 구성된다.With reference to FIG. 1, the control part 50 is demonstrated. The controller 50 is composed of an electronic board control unit 51, a central processing unit 52, and a signal conversion unit 53.

CDS 센서(60)에서 전달된 측정값은 신호변환부(53)에서 전달받아 디지털 데이터로 변환된다. 신호변환부(53)는 변환된 측정값을 중앙처리부(52)로 넘기게 된다.The measured value transmitted from the CDS sensor 60 is received by the signal converter 53 and converted into digital data. The signal converter 53 passes the converted measurement value to the central processing unit 52.

중앙처리부는 먼저 변환된 측정값을 전달받아 각 측정값 중 최대값과 최소값을 제외한 나머지 측정값들의 평균을 구한다. 다음으로 직전의 측정시에 산출했던 평균값과 비교하여 측정치 평균값이 기준치 이상으로 변동된 경우 휘도 수정목표치를 변경시킨다. 전광판 작동 초기에는 상술한 평균값을 수정목표치로 하게된다.The central processing unit first receives the converted measured values and averages the remaining measured values except the maximum and minimum values of each measured value. Next, the luminance correction target value is changed when the average value of the measured value is changed by more than the reference value compared with the average value calculated at the time of the previous measurement. In the initial stage of operation of the electronic display, the above-described average value is used as the correction target value.

본 실시예의 전광판은 주위 빛의 세기에 따라 휘도를 급격히 변동시키는 방식이 아니라 휘도 수정목표치를 두어 일정 주기마다 수정목표치에 가까워지도록 휘도를 단계적으로 변화시키는 적분휘도조절 방식을 취하고 있다. The display board according to the present embodiment uses an integrated luminance control method in which the luminance is gradually changed to approach the correction target value at regular intervals by placing the luminance correction target value instead of rapidly changing the luminance according to the ambient light intensity.

한편 선택적인 기능으로서 전광판 앞뒤의 밝기 차이를 고려하여 전광판의 휘도를 조절할 수 있다. 즉 전광판 앞면 뒷면에 각각 복수의 CDS 센서를(60) 배치한 상태에서 빛의 밝기를 측정하고 앞뒷면 각각의 평균 측정값을 비교하여 뒷면의 밝기가 관리자가 미리 설정해 둔 기준치 이상 큰 경우 휘도 수정목표치를 증가시킨다. 전광판의 뒷면이 밝은 경우에는 전광판의 휘도를 증가시켜야 전광판에 표출되는 정보의 가독성이 향상되기 때문이다.On the other hand, as an optional function, the brightness of the sign can be adjusted in consideration of the difference in brightness before and after the sign. In other words, the brightness of the light is measured when a plurality of CDS sensors (60) are arranged on the front and back of the front panel, and the average measured value of each of the front and back is compared. To increase. If the back of the sign is bright, the brightness of the sign should be increased to improve the readability of the information displayed on the sign.

또한 휘도 수정목표치는 휘도제어가능범위라는 밝기 조절의 한계치를 설정하여 그 범위내에서만 변동이 되도록 할 수도 있다.In addition, the brightness correction target value may be set so as to vary only within the range by setting a threshold of brightness adjustment called the brightness controllable range.

전광판제어부(51)와 스캔컨트롤러(20)는 중앙처리부(52)로부터 전광판의 휘도데이터를 전달받아 전광판의 휘도를 변동시키는 구성으로서 공지의 부분이므로 상세한 설명을 생략한다. 다만 전광판의 휘도를 한꺼번에 휘도 수정목표치로 변화시키는 것이 아니라 앞서 설명한 바와같이 적분휘도조절방식으로 조절하는 면에서 차이가 있다.The display board controller 51 and the scan controller 20 receive the luminance data of the display board from the central processing unit 52 and change the brightness of the display board. However, there is a difference in that the luminance of the display board is not changed at once to the luminance correction target value, but is adjusted in the integrated luminance control method as described above.

이하 [도 2]를 참조하여 본 실시예에 의한 작용을 설명한다.Hereinafter, the operation according to the present embodiment will be described with reference to FIG. 2.

먼저 앞서 설명한 바와 같이 일정시간 마다 CDS 센서로부터 측정치를 읽어들여서 제어부(50)로 측정값을 전달한다.(S10)First, as described above, the measured value is read from the CDS sensor at predetermined time intervals, and the measured value is transmitted to the controller 50 (S10).

다음으로 단계에서는 읽어들인 측정값 중 최대치와 최소치를 제외한 나머지 값들의 평균을 산출하고(S20) 직전의 평균값과 비교하여 상기 측정치 평균값이 기준치 이상 변화했는지 여부를 판단하게 된다.(S30) 이 때 기준치 이상의 변동으로 판단되는 경우에는 휘도 수정목표치를 조절함으로써 전광판의 휘도조절에 반영되도록 한다.Next, the average value of the remaining values except for the maximum value and the minimum value of the read values is calculated (S20), and the average value of the measured value is changed by more than the reference value by comparing with the average value immediately before the determination (S30). If it is determined that the above fluctuations, the brightness correction target value is adjusted to reflect the brightness of the electronic display.

선택에 따라 앞서 설명한 바와 같이 전광판 후면과 전면의 밝기차를 고려하여 휘도 수정목표치를 조절한다.(S40, S45) 이 후 휘도 수정목표치를 이용하여 적분휘도조절을 하게된다.(S50)According to the selection, the brightness correction target value is adjusted in consideration of the difference in brightness between the back and the front of the signboard as described above (S40, S45). The integrated brightness is then adjusted using the brightness correction target value (S50).

이상 본 발명의 바람직한 실시예에 대하여 설명하였으나, 본 발명의 기술적 사상이 상술한 바람직한 실시예에 한정되는 것은 아니며, 특허청구범위에 구체화된 본 발명의 기술적 사상을 벗어나지 않는 범주에서 다양한 LED 전광판용 휘도 조절 장치 및 방법으로 구현될 수 있다.Although the preferred embodiments of the present invention have been described above, the technical spirit of the present invention is not limited to the above-described preferred embodiments, and the brightness for various LED display boards is not limited to the technical spirit of the present invention specified in the claims. It can be implemented in a control device and method.

도 1은 본 발명에 의한 전광판용 휘도 조절장치의 구성을 나타내는 블록도이다.1 is a block diagram showing the configuration of a luminance adjusting device for an electronic display panel according to the present invention.

도 2는 본 발명에 의한 전광판용 휘도 조절방법을 나타내는 순서도이다.2 is a flow chart showing a brightness adjustment method for an electronic display panel according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

20: Scan Controller 25: LED 패널20: Scan Controller 25: LED Panel

50: 제어부 51: 전광판 제어부50: control unit 51: display control unit

52: 중앙처리부 53: 신호변환부52: central processing unit 53: signal conversion unit

60: CDS 센서60: CDS sensor

Claims (6)

(a) 일정시간 마다 CDS 센서로부터 측정치를 읽어들이는 단계;(a) reading measurements from the CDS sensor at regular intervals; (b) 읽어들인 측정값 중 최대치와 최소치를 제외한 나머지 값들의 평균을 산출하는 단계;(b) calculating an average of the remaining values except for the maximum value and the minimum value among the read values; (c) 직전의 평균값과 비교하여 상기 측정치 평균값이 기준치 이상 변화했는지 여부를 판단하여 기준치 이하인 경우 상기 (a)단계로 회귀하는 단계;(c) determining whether the measured mean value has changed by more than a reference value compared to the immediately before average value, and returning to step (a) when the mean value is less than the reference value; (d) 상기 평균값을 전광판 휘도 수정목표치로 설정하는 단계; 및(d) setting the average value as a score correction target value of the electronic sign; And (e) 상기 수정목표치를 기준으로하여 적분휘도조절을 하고 상기 (a)단계로 회귀하는 단계:를 포함하는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절방법.(e) adjusting the integrated luminance based on the corrected target value and returning to the step (a); 제1항에 있어서,The method of claim 1, 상기 (d)단계에서는,In the step (d), (d1) 전광판 후면쪽에 설치된 센서의 평균 측정값이 전광판 전면쪽에 설치된 센서의 평균 측정값보다 기준치 이상 큰 경우 상기 휘도 수정목표치를 증가시키는 단계를 더 포함하는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절방법.and (d1) increasing the luminance correction target value when the average measured value of the sensor installed at the rear side of the display is greater than the reference value of the sensor installed at the front side of the display. Brightness adjustment method. 제2항에 있어서,The method of claim 2, 상기 (d1)단계 이전에,Before step (d1), 휘도 수정목표치가 휘도제어가능범위를 벗어나는지를 판단하여 휘도제어가능범위를 벗어나는 경우에는 상기 (d1)단계를 생략하는 단계를 더 포함하는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절방법.And determining the luminance correction target value outside the luminance controllable range, and if the luminance correction target value is outside the luminance controllable range, omitting the step (d1). LED 전광판에 있어서,In the LED billboard, 일정시간마다 상기 LED 전광판 주변의 밝기를 감지하는 CDS센서;CDS sensor for detecting the brightness around the LED sign at a predetermined time; 상기 CDS센서로부터 밝기 측정값을 전달받아 읽어들인 측정값 중 최대치와 최소치를 제외한 나머지 값들의 평균을 산출하고, 직전의 평균값과 비교하여 상기 측정치 평균값이 기준치 이상으로 변동된 경우 휘도 수정목표치를 변경시키는 제어부; 및The brightness value is received from the CDS sensor, and the average value of the remaining values except for the maximum and minimum values is read. Control unit; And 상기 휘도 수정목표치를 이용하여 상기 LED 전광판의 휘도를 적분식으로 조절하는 스캔컨트롤러:를 포함하는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절장치.And a scan controller configured to integrally adjust the brightness of the LED display panel using the brightness correction target value. 제4항에 있어서,The method of claim 4, wherein 상기 CDS 센서는 상기 LED 전광판의 전면과 후면에 배치하고,The CDS sensor is disposed on the front and rear of the LED sign, 상기 제어부는 전광판 전면쪽에 설치된 센서의 평균 측정값보다 기준치 이상 큰 경우 상기 휘도 수정목표치를 증가시키는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절장치.And the control unit is capable of precise control of luminance according to the ambient brightness to increase the luminance correction target value when the reference value is larger than the average measured value of the sensor installed in the front of the display. 제5항에 있어서,The method of claim 5, 상기 제어부는 휘도 수정목표치를 휘도제어가능범위에서만 변경시키는 주변 밝기에 따라 휘도의 정밀제어가 가능한 전광판용 휘도 조절장치.And the control unit is capable of precisely controlling the luminance according to the surrounding brightness of changing the luminance correction target value only in the luminance controllable range.
KR1020080094317A 2008-09-25 2008-09-25 Apparatus of controlling luminance precisely along optical circumstance and method thereof KR100956860B1 (en)

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WO2022095176A1 (en) * 2020-11-09 2022-05-12 深圳市华星光电半导体显示技术有限公司 Brightness adjusting method and apparatus for display panel
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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KR100662980B1 (en) * 2004-07-23 2006-12-28 삼성에스디아이 주식회사 Light emitting display
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CN102369561A (en) * 2009-05-28 2012-03-07 森西比公司 Device and method for traffic surveillance
CN102369561B (en) * 2009-05-28 2014-03-26 森西比公司 Device and method for traffic surveillance
KR101455300B1 (en) * 2013-05-03 2014-10-31 박종현 Method for driving LED Electric Lighting Board
US9865231B2 (en) 2013-11-13 2018-01-09 Samsung Electronincs Co., Ltd. Adaptive image compensation methods and related apparatuses
WO2022095176A1 (en) * 2020-11-09 2022-05-12 深圳市华星光电半导体显示技术有限公司 Brightness adjusting method and apparatus for display panel
KR102346203B1 (en) 2021-10-02 2022-01-03 주식회사 에스에스라이트 Electronic Display Board With automatic brightness adjustment
KR102625622B1 (en) * 2023-06-29 2024-01-17 현대아이티에스전자(주) LED display board and method for controlling luminance thereof

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