KR200217320Y1 - A device for automatically controlling brightness of monitor - Google Patents

Abstract

The present invention relates to an automatic screen brightness adjusting device for reducing eye strain to a user by automatically adjusting the brightness of an image displayed on a monitor according to the illuminance of a computer main body or a monitor. A key input unit having at least a manual / auto switching key and an illuminance level setting key to generate a key command and an illuminance level setting key command for an automatic mode or a manual mode, and an illuminance sensor to detect illuminance and thereby generate an electric signal Determination of the manual mode or the automatic mode by detecting the illuminance detection unit for converting and generating, a display unit for selectively turning on the LED to correspond to the detected illuminance provided with a plurality of LEDs, the key input input from the key input unit, At the same time, an illuminance level set value is set, and an illuminance value is set by detecting an input signal from the illuminance sensor. And a microcomputer that outputs an LED lighting signal according to the detected illuminance to the display unit and outputs a video brightness control signal according to the set illuminance, and a video signal applied from the PC to the monitor according to the video brightness control signal of the microcomputer. It includes a brightness control to control the brightness of the light.

Description

A DEVICE FOR AUTOMATICALLY CONTROLLING BRIGHTNESS OF MONITOR}

The present invention relates to adjusting the brightness of a monitor, and more particularly, to automatically adjust the brightness of an image displayed on the monitor according to the illuminance of the computer main body or the monitor surroundings. It relates to an automatic screen brightness adjusting device of a monitor which is designed to reduce the number of screens.

Computers (hereinafter referred to as "PCs") are now becoming a universal necessity for life. PCs are becoming an important medium in offices and at home, and they have been using PCs for a long time.

In using such a PC, the monitor is a very important accessory that is directly related to the eyestrain of the user.

However, since the illumination of day and night or sunny day and cloudy day is different, the brightness of the image displayed on the monitor and the surrounding brightness are different from each other, which causes great fatigue to the eyes of the user.

Of course, the monitor itself is also provided with a switch for adjusting the brightness of the video signal displayed, it is very cumbersome to use it by adjusting it according to the illuminance around the monitor.

As a result, if the brightness of the monitor image is always kept constant, continuous use in a place where ambient illuminance changes may cause eye fatigue as well as deterioration of vision.

The present invention was devised to solve the above problems, and the object of the present invention is to automatically adjust the brightness of the image displayed on the monitor according to the illuminance of the computer body or the monitor surroundings, but the image displayed when the surrounding illumination is high It is to provide an automatic screen brightness control device for increasing the brightness of the monitor and lowering the brightness of the displayed image when the ambient light is low.

The present invention for achieving the above object comprises a key input unit for generating a key command and an illumination level setting key command for an automatic mode or a manual mode with at least a manual / automatic switching key and an illumination level setting key, and an illumination sensor It is provided with an illumination sensing unit for detecting the illumination and converting it into an electrical signal according to the generation, a display unit for selectively lighting the LED corresponding to the detected illumination with a plurality of LEDs, and detects the key input input from the key input unit Determine the manual mode or the automatic mode, and at the same time set the illumination level setting value, detect the input signal from the illumination detection unit, set the illumination value, and output the LED lighting signal according to the detected illumination to the display unit And a microcomputer for outputting a video brightness control signal according to the set illuminance, and from the PC according to the video brightness control signal of the microcomputer. And a brightness controller for controlling the brightness of the video signal applied to the monitor.

1 is a circuit block diagram of the automatic screen brightness adjustment apparatus of the monitor according to the present invention,

Figure 2a, 2b, 2c is a block diagram showing embodiments to which the present invention is applied,

3 is a control flowchart showing an operating state of the automatic screen brightness adjustment apparatus of the monitor according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: key input unit 20: roughness detection unit

30: display unit 40: microcomputer

50: brightness control unit 100: PC

200: monitor

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit block diagram of the automatic screen brightness adjustment apparatus of the monitor according to the present invention.

As shown in the drawing, the present invention includes a manual / automatic switching key 11 for selecting and switching a manual mode or an automatic mode, and an illuminance level setting key 12 for arbitrarily setting the illuminance level. It is provided with a key input unit 10 for generating and inputting to the microcomputer 40, and an illumination sensor 20 for detecting the degree of light amount to detect the illumination of the attention and input the signal accordingly to the microcomputer 40 A display unit which includes an illuminance detecting unit 20 and a plurality of light emitting diodes (hereinafter referred to as “LEDs”) 31 to selectively illuminate the LEDs 31 to correspond to the illuminance detected according to the output of the microcomputer 40. 30 and detects a key input input from the key input unit 10 to determine a manual mode or an automatic mode, and at the same time set an illumination level setting value, and input an input signal from the illuminance detection unit 20. Detect and set the illuminance value And a microcomputer 40 for outputting a control signal according to the set illuminance to the display unit 30 and a brightness control unit 50 and an amplifier circuit 51. And a brightness controller 50 for controlling the brightness of the video signal RGB applied from the PC to the monitor according to the control signal of 40).

Figure 2a, 2b, 2c is a configuration diagram showing embodiments to which the present invention is applied, the set device (S) according to the present invention is connected between the cable connected to the monitor 200 in the PC 100 as in Figure 2a It may be interposed in, the illumination sensor 21 is installed around the monitor 200 to detect the illumination.

In addition, as shown in FIG. 2B, the set device S may be installed inside the main body of the PC 100, and an illuminance sensor 21 may be installed around the PC 100 to detect illuminance.

Also, as shown in FIG. 2C, the set device S may be installed inside the main body of the monitor 200, and the illumination sensor 21 may be installed around the monitor 200 to detect illumination.

The operation of the present invention configured as described above will be described with reference to the control flowchart of FIG. 3.

First, when power is applied to the apparatus through a power circuit not shown, the microcomputer 40 controls the apparatus in a predetermined procedure by a predetermined program recorded in the built-in memory means.

First, when power is applied, the microcomputer 40 detects a key command input from the key input unit 10. By detecting the on (eg, automatic) and off (eg, manual) signals of the manual / auto switching key 11 of the key input unit 10, it is determined whether the current mode is the automatic mode or the manual mode (step S1). If it is determined that the manual mode, the process proceeds to the manual mode (S2 step). The manual mode refers to a mode in which the user can arbitrarily adjust the brightness control key provided in the monitor 200 itself.

If it is determined that the automatic mode in the determination step (S1), the microcomputer 40 detects the input of the illuminance level setting key 12 of the key input unit 10 (step S3). The illuminance level is an illuminance level arbitrarily adjusted by the user, and the user himself arbitrarily sets a reference level of illuminance according to the illuminance around the monitor or the PC.

Therefore, when a predetermined illuminance level adjusted by the user is detected, the microcomputer 40 sets this value as a reference value of illuminance detection (step S4). Then, the illuminance around the monitor 200 or the PC 100 input through the illuminance detecting unit 20 is detected (step S5).

The illuminance is detected by the illuminance sensor 21 installed around the monitor 200 or the PC 100, and the illuminance sensor 21 is a conventional optical sensor that converts light into an electrical signal.

The micom 40 sets this value according to the illuminance detected by the illuminance sensor 21 and the illuminance detecting unit 20 (step S6), and then displays the set illuminance to the display unit 30. An LED 31 lighting signal is output (step S7). For example, if there are 10 LEDs 31 indicating the illuminance amount up to 10 stages, and the current illuminance amount is slightly bright corresponding to 7 stages (5 stages is the intermediate illuminance), All of the numbered LEDs 31 are turned on. Therefore, the user can recognize the current illuminance through this.

At the same time as the LED 31 is turned on, the microcomputer 40 sets a video brightness control signal according to the set illuminance (step S8). Then, the set video brightness control signal is applied to the brightness controller 50 (step S9).

The brightness controller 50 receiving the video brightness control signal from the microcomputer 40 adjusts the level of the video signal RGB applied from the PC 100 to the monitor 200 by using the built-in amplifier 51. Change. Accordingly, the level of the video signal RGB applied to the monitor 200 is first changed, and the changed video signal RGB is amplified back to a predetermined level through a preamplifier and a main amplifier provided in the monitor, and thus the cathode ray It is displayed on the CRT screen.

As a result, when the illuminance around the monitor 200 or the PC 100 is low, that is, when it is dark, the brightness of the image signal displayed on the CRT is darkened, and when the illuminance around the monitor 200 or the PC 100 is high, that is, the brightness is bright. In this case, the brightness of the image signal displayed on the CRT is brightened, which greatly reduces the eyestrain of the user.

As described above, the present invention detects illuminance around the PC or around the monitor and automatically adjusts the brightness of the image displayed on the monitor accordingly, thereby significantly reducing eye fatigue. Of course, there is an effect that can greatly improve the reliability of the PC product employing the device.

Claims (2)

A key input unit including at least a manual / auto switching key and an illumination level setting key to generate a key command and an illumination level setting key command for an automatic mode or a manual mode; An illuminance sensor having an illuminance sensor to detect illuminance and convert the illuminance into an electrical signal according to the illuminance sensor; A display unit including a plurality of LEDs to selectively light the LEDs to correspond to the detected illuminance; Detects a key input input from the key input unit to determine a manual mode or an automatic mode, simultaneously sets an illuminance level set value, detects an input signal from the illuminance sensor, sets an illuminance value, and detects the illuminance detected. A microcomputer for outputting a video brightness control signal according to a set illuminance while simultaneously outputting an LED lighting signal according to the display unit; And A brightness controller for controlling the brightness of the video signal applied from the PC to the monitor according to the video brightness control signal of the microcomputer; Screen brightness automatic adjustment device characterized in that it comprises a. The method of claim 1, The illuminance sensor of the illuminance detection unit is installed around the monitor and the PC, and the remaining circuit sets except for the illuminance sensor are embedded in the PC or the monitor or interposed between the video cable between the PC and the monitor. Automatic screen brightness control.