KR200268748Y1 - LCD screen brightness automatic control device - Google Patents

LCD screen brightness automatic control device Download PDF

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Publication number
KR200268748Y1
KR200268748Y1 KR2019970012209U KR19970012209U KR200268748Y1 KR 200268748 Y1 KR200268748 Y1 KR 200268748Y1 KR 2019970012209 U KR2019970012209 U KR 2019970012209U KR 19970012209 U KR19970012209 U KR 19970012209U KR 200268748 Y1 KR200268748 Y1 KR 200268748Y1
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brightness
screen
voltage
user
lcd screen
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KR2019970012209U
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Korean (ko)
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KR19980067623U (en
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김덕현
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구자홍
엘지전자주식회사
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14Digital output to display device ; Cooperation and interconnection of the display device with other functional units

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)

Abstract

본 고안은 주변의 밝기를 센서를 통해 감지하여 최적의 화면 밝기로 자동으로 조절가능하도록 한 엘씨디(LCD)화면 밝기 자동조절장치에 관한 것으로, 종래 노트북 컴퓨터는 사용자가 손쉽게 휴대하고 다닐수 있으나 작업환경이 달라지므로 상기 사용자는 작업환경이 달라질 때 마다 화면의 밝기를 현재의 작업환경에 맞게 조절해야 하는 번거로운 문제점이 있었다.The present invention relates to an LCD screen brightness automatic control device that detects the surrounding brightness through a sensor and automatically adjusts to an optimal screen brightness. A conventional notebook computer can be easily carried by a user, but the work environment is Since the user is different, the user has a cumbersome problem of adjusting the brightness of the screen according to the current working environment whenever the working environment is changed.

본 고안은 이와 같은 종래의 문제점을 해결하기 위하여 노트북 컴퓨터에 주변의 밝기를 감지할 수 있는 센서를 부착하여 사용자가 노트북 컴퓨터를 조작할 경우 현재의 작업환경에 대한 주위의 밝기를 감지하여 자동으로 주위 환경의 변화에 맞게 LCD화면의 밝기를 자동으로 조절되도록 한 것으로 노트북 컴퓨터에 적용한다.In order to solve such a conventional problem, the present invention attaches a sensor to detect the brightness of the surroundings of the notebook computer. When the user operates the notebook computer, the present invention automatically senses the surrounding brightness of the current working environment. The brightness of the LCD screen is automatically adjusted according to the change of environment, and it is applied to notebook computers.

Description

엘씨디(LCD)화면 밝기 자동조절장치LCD screen brightness automatic control device

본 고안은 주변의 밝기를 센서를 통해 감지하여 최적의 화면 밝기로 자동으로 조절가능하도록 한 엘씨디(LCD)화면 밝기 자동조절장치에 관한 것이다.The present invention relates to an LCD (LCD) screen brightness automatic control device to detect the ambient brightness through the sensor to automatically adjust to the optimal screen brightness.

종래의 화면 밝기 조절장치는 도 1에 도시된 바와 같이, 화면밝기 기능키이신호를 입력하는 키보드기능키이(1)와, 키보드기능키이(1)에서 출력된 화면밝기 조절키이신호인 디지탈 신호를 입력받아 화면 밝기 조절을 위한 휘도신호를 출력하는 키보드제어부(2)와, 키보드제어부(2)에서 출력된 휘도신호를 입력받아 키보드의 키이가 눌리는 시간에 맞는 레벨로 펄스폭변조(PWM)신호를 출력하는 마이컴(3)과, 마이컴(3)에서 출력된 펄스폭변조신호를 입력받아 상기 입력된 펄스폭변조에 맞는 전압을 출력하는 LCD인버터(4)와, 상기 LCD인버터(4)에서 출력된 전압에 따라 화면 밝기가 조절되는 LCD백라이트(5)로 구성된 것이다.In the conventional screen brightness adjusting device, as shown in FIG. 1, a keyboard function key 1 for inputting a screen brightness function key signal and a digital signal which is a screen brightness control key signal output from the keyboard function key 1 are inputted. And a keyboard control unit 2 for outputting a luminance signal for adjusting the screen brightness, and outputs a pulse width modulation (PWM) signal at a level suitable for a time when a key of the keyboard is pressed by receiving the luminance signal output from the keyboard controller 2. An LCD inverter 4 for receiving a pulse width modulation signal output from the microcomputer 3, a microcomputer 3, and outputting a voltage corresponding to the input pulse width modulation, and a voltage output from the LCD inverter 4. According to the LCD backlight 5 is configured to adjust the brightness of the screen.

이와 같이 구성된 종래 화면 밝기 조절장치는 도 1에 도시된 바와 같이, 사용자가 노트북 컴퓨터를 휴대하고 다니면서 필요한 정보를 입출력할 경우 상기 노트북 컴퓨터는 작업환경에 따라 화면의 밝기가 변화되므로 사용자는 작업환경에 맞게 화면의 밝기를 조절해야 만 한다.As shown in FIG. 1, the conventional screen brightness adjusting device configured as described above, when the user carries input and output information necessary while carrying the notebook computer, the notebook computer changes the brightness of the screen according to the working environment. You need to adjust the brightness of the screen to fit.

따라서, 사용자가 화면의 밝기를 조절하기 위해서는 먼저 키보드기능키이(1)를 통하여 디지탈 신호를 수동으로 조절하게 되는 바, 상기 키보드기능키이(1)에서 출력된 디지탈 신호는 키보드제어부(2)에 입력되어 화면조절에 필요한 휘도신호를 마이컴(3)에 인가하게 된다.Accordingly, in order to adjust the brightness of the screen, the user first manually adjusts the digital signal through the keyboard function key 1, and the digital signal output from the keyboard function key 1 is input to the keyboard controller 2. Then, the luminance signal necessary for screen adjustment is applied to the microcomputer 3.

이때, 마이컴(3)은 키보드제어부(2)에서 출력된 휘도신호를 입력받아 키보드의 키이가 눌리는 시간에 맞는 레벨로 펄스폭변조신호를 출력하게 되면 LCD인버터(4)는 마이컴(3)에서 출력된 펄스폭변조신호에 의해 공급전원이 달라지도록 LCD백라이트(5)에 전압을 출력하므로서 상기 LCD백라이트(5)는 LCD인버터(4)에서 출력된 전압에 의해 화면의 밝기가 조절 된다.At this time, the microcomputer 3 receives the luminance signal output from the keyboard control unit 2 and outputs the pulse width modulation signal at a level suitable for the time when the key of the keyboard is pressed. The LCD inverter 4 outputs the microcomputer 3 from the microcomputer 3. The LCD backlight 5 adjusts the brightness of the screen by the voltage output from the LCD inverter 4 by outputting a voltage to the LCD backlight 5 so that the power supply varies according to the pulse width modulation signal.

그러나 종래 노트북 컴퓨터는 사용자가 손쉽게 휴대하고 다닐수 있으나 작업환경이 달라지므로 상기 사용자는 작업환경이 달라질 때 마다 화면의 밝기를 현재의 작업환경에 맞게 조절해야 하는 번거로운 문제점이 있었다.However, the conventional notebook computer can be easily carried by the user, but because the working environment is different, the user has a cumbersome problem of adjusting the brightness of the screen according to the current working environment whenever the working environment is changed.

본 고안은 이와 같은 종래의 문제점을 해결하기 위하여 노트북 컴퓨터에 주변의 밝기를 감지할 수 있는 센서를 부착하여 사용자가 노트북 컴퓨터를 조작할 경우 현재의 작업환경에 대한 주위의 밝기를 감지하여 자동으로 주위 환경의 변화에 맞게 LCD화면의 밝기를 자동으로 조절되도록 한 것으로 첨부된 도면에 의하여 본 고안의 구성 및 작용효과를 설명하면 다음과 같다.In order to solve such a conventional problem, the present invention attaches a sensor to detect the brightness of the surroundings of the notebook computer. When the user operates the notebook computer, the present invention automatically senses the surrounding brightness of the current working environment. When the brightness of the LCD screen is automatically adjusted according to the change of environment, the configuration and working effects of the present invention will be described with reference to the accompanying drawings.

도 1은 종래 엘씨디 화면 밝기 조절장치의 구조를 보인 블록도.1 is a block diagram showing the structure of a conventional LCD screen brightness control device.

도 2는 본 고안 엘씨디 화면 밝기 자동조절장치의 구조를 보인 블록도.Figure 2 is a block diagram showing the structure of the present invention LCD screen brightness automatic adjustment device.

도 3은 본 고안 빛의 강도와 충격계수의 폭 관계를 보인 도.Figure 3 is a view showing the relationship between the intensity of the light and the impact coefficient of the present invention.

먼저, 본 고안 LCD화면 밝기 자동조절장치는 도 2에 도시된 바와 같이, 주위환경의 밝기를 감지하고 상기 감지된 밝기의 강도에 따른 아날로그신호를 출력하는 밝기센서부(10)와, 상기 밝기센서부(10)에서 감지되어 출력된 아날로그신호를 입력받아 이를 디지탈신호로 변환시키고 동시에 입력된 아날로그신호의 강도에 따른 충격계수(Duty Cycle)인 펄스폭변조(PWM)의 폭 레벨을 구분하여 이를 프로그램한후 출력하는 키보드제어부(11)와, 상기 키보드제어부(11)에서 출력된 펄스폭변조신호를 입력받아 상기 펄스폭변조에 맞는 레벨의 전압을 출력하는 전압조절부(12)와, 상기 전압조절부(12)에서 출력된 전압에 따라 자동으로 화면의 밝기가 조절되는 백라이트(13)로 구성된 것이다.First, the present invention LCD screen brightness automatic adjustment device, as shown in Figure 2, the brightness sensor unit 10 for detecting the brightness of the surrounding environment and outputs an analog signal according to the intensity of the detected brightness, and the brightness sensor The analog signal sensed and output from the unit 10 is received and converted into a digital signal, and at the same time, the width level of the pulse width modulation (PWM), which is a duty cycle according to the intensity of the input analog signal, is divided and programmed. And a keyboard controller 11 for outputting the voltage, a voltage controller 12 for receiving a pulse width modulation signal output from the keyboard controller 11 and outputting a voltage having a level corresponding to the pulse width modulation, and the voltage adjustment. The backlight 12 is configured to automatically adjust the brightness of the screen according to the voltage output from the unit 12.

이와 같이 구성된 본 고안의 작용효과는 도 2에 도시된 바와 같이, 사용자가 노트북 컴퓨터를 실행하고자 할 경우 밝기센서부(10)는 현재 노트북 컴퓨너의 주위 환경의 밝기를 감지하여 상기 밝기의 강도에 따른 아날로그 신호를 출력되어 키보드제어부(11)의 입력단(A/D)에 인가되면 키보드제어부(11)는 입력된 아날로그 신호를 디지탈 신호로 변환시킨후 상기 입력된 아날로그 신호의 강도에 따른 충격계수인 펄스폭변조의 폭레벨을 구분하여 프로그램한후 이를 출력하게 된다.As illustrated in FIG. 2, the effect of the present invention configured as described above, when the user wants to execute the notebook computer, the brightness sensor unit 10 detects the brightness of the surrounding environment of the current notebook computer and according to the intensity of the brightness. When an analog signal is output and applied to the input terminal A / D of the keyboard control unit 11, the keyboard control unit 11 converts the input analog signal into a digital signal, and then pulses which are shock coefficients according to the strength of the input analog signal. The width level of width modulation is classified and programmed.

이와 같이 키보드제어부(11)에서 펄스폭변조신호가 출력될 때 전압조정부(12)는 펄스폭변조신호를 입력받아 펄스폭변조에 맞는 전압을 백라이트(13)에 출력하게 되는데 상기 키보드제어부(11)에서 출력된 충격계수인 펄스폭변조의 폭이 길어질 경우 전압조정부(12)에서 출력되는 전압은 크게 된다.When the pulse width modulation signal is output from the keyboard control unit 11 as described above, the voltage adjusting unit 12 receives the pulse width modulation signal and outputs a voltage suitable for the pulse width modulation to the backlight 13. When the width of the pulse width modulation, which is the impact coefficient outputted from, becomes long, the voltage output from the voltage adjusting unit 12 becomes large.

따라서, 백라이트(13)는 전압조정부(12)에서 출력된 전압에 따라 자동으로 화면의 밝기를 조절하게 된다.Therefore, the backlight 13 automatically adjusts the brightness of the screen according to the voltage output from the voltage adjuster 12.

즉, 백라이트(13)에서 출력되는 빛의 강도는 작업환경의 밝기에 따라 자동으로 조절되는 바, 도 3에 도시된 바와 같이 작업환경의 밝기의 강도가 "5"일 경우 백라이트(13)에 공급되는 전압은 "1"이 된다.That is, the intensity of the light output from the backlight 13 is automatically adjusted according to the brightness of the working environment, as shown in FIG. 3, when the intensity of the brightness of the working environment is "5", it is supplied to the backlight 13. The voltage becomes "1".

이상에서 설명한 바와 같이,사용자가 노트북컴퓨터를 사용할 경우 현재 작업환경의 밝기를 감지한후 이를 입력받아 감지된 밝기의 강도에 따른 충격계수인 펄스폭변조의 폭레벨을 구분하여 프로그램하므로서 자동으로 주위 환경의 밝기에 따라 화면의 밝기가 조절되므로서 제품의 신뢰성이 향상되는 효과가 있다.As described above, when a user uses a notebook computer, the user automatically detects the brightness of the current working environment and receives the input to automatically classify the width level of the pulse width modulation, which is an impact coefficient according to the detected intensity of the brightness. The brightness of the screen is adjusted according to the brightness of the product, thereby improving the reliability of the product.

Claims (1)

주위환경의 밝기를 감지하고 상기 감지된 밝기의 강도에 따른 신호를 출력하는 밝기센서부(10)와, 상기 밝기센서부(10)에서 감지되어 출력된 입력신호의 강도에 따라 레벨을 구분하고, 레벨에 따른 전압조정신호를 출력하는 키보드제어부(11)와, 상기 키보드제어부(11)에서 출력된 전압조정신호를 입력받아 신호에 맞는 레벨의 전압을 출력하는 전압조정부(12)와, 상기 전압조정부(12)에서 출력된 전압에 따라 자동으로 화면의 밝기가 조절되는 백라이트(13)로 구성된 엘씨디(LCD)화면 밝기 자동조절장치.The brightness sensor unit 10 for detecting the brightness of the surrounding environment and outputs a signal according to the intensity of the detected brightness, and the level according to the intensity of the input signal detected and output from the brightness sensor unit 10, A keyboard control unit 11 for outputting a voltage adjustment signal according to a level, a voltage adjusting unit 12 for receiving a voltage adjustment signal output from the keyboard control unit 11 and outputting a voltage having a level corresponding to the signal, and the voltage adjusting unit LCD screen brightness automatic control device consisting of a backlight (13) that automatically adjusts the brightness of the screen according to the voltage output from (12).
KR2019970012209U 1997-05-28 1997-05-28 LCD screen brightness automatic control device KR200268748Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990055686A (en) * 1997-12-27 1999-07-15 김영환 LCD monitor auto brightness

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990056741A (en) * 1997-12-29 1999-07-15 김영환 Inverter Circuit for Backlight Drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990055686A (en) * 1997-12-27 1999-07-15 김영환 LCD monitor auto brightness

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