KR101854989B1 - Display device using multi angle contrast detection - Google Patents

Abstract

An object of the present invention is to provide a display device using multi-angle light and dark detection for detecting light and dark information at various angles using a VR camera and outputting a change in display environment based on the detected light / dark information. To this end, the present invention comprises a peripheral information detecting unit for detecting intensity information in a 360-degree direction around an arbitrary reference point; A signal converter for converting the light / dark information detected by the peripheral information detector into a predetermined communication signal and outputting the signal; A control unit for analyzing the converted signal outputted from the signal converting unit and comparing the converted signal with preset reference information and outputting a dimming control signal of a predetermined backlight according to the comparison result; And a backlight whose brightness output is controlled in accordance with a dimming control signal output from the control unit. Therefore, the present invention is advantageous in that the VR camera detects the contrast information at various angles, and changes the display environment based on the detected contrast information, thereby providing an optimal viewing environment to the viewer.

Description

DISPLAY DEVICE USING MULTI ANGLE CONTRAST DETECTION [0002]

The present invention relates to a display device using multi-angle light and dark detection, and more particularly, to a multi-angle light and dark detection that detects light and dark information at various angles using a VR camera and changes the display environment based on the detected light / And a display device using the same.

Since the liquid crystal display does not self-emit light, information is displayed by reflecting external light transmitted through a liquid crystal display panel (LCD panel), or a separate light source, that is, a backlight assembly is installed on the back surface of the liquid crystal display panel to display information .

Here, the backlight assembly includes a lamp unit for emitting light, a light guide plate for guiding light emitted from the lamp unit toward the liquid crystal display panel, and optical sheets for diffusing and condensing the light guided by the light guide plate to improve light efficiency do.

An inverter (also referred to as a backlight control circuit) supplies a high voltage current so that the backlight assembly can operate, and also receives a control signal from the microcontroller to adjust the brightness of the lamp unit.

The microcontroller adjusts the brightness of the backlight by changing the high voltage current by the analog dimming method.

In this case, since the luminance variable range is narrow when the luminance is extremely low, the brightness of the backlight is adjusted by varying the on / off duty of the high voltage switching frequency by a burst dimming method.

For example, when the user lowers the luminance, when the luminance is lowered by decreasing the current by using the analog dimming method when the luminance is shifted from the high luminance to the low luminance, when the luminance is not lowered further, the on- .

The control process of the backlight is to control the backlight according to the ambient illumination (image mode: Eye Q Green) according to the image mode set by the user, or to control the backlight according to the input image (image mode: clear) , Or to set the brightness of the backlight (image mode: standard).

A video output mode set by the user is confirmed when the video signal is inputted, and it is determined whether the video mode is the control mode or the standard mode according to the input video or the video output mode according to the surrounding illuminance, Collect the data.

Accordingly, the control value for controlling the backlight is calculated according to the collected data, and the image is displayed in the video output mode selected by the user.

This has the problem that it is difficult to provide an optimum power saving effect while maintaining an optimal picture quality because the backlight is controlled for the set viewing mode without considering all the conditions for the viewing environment such as the viewing environment and the input image.

Korean Patent Laid-Open Publication No. 10-2011-0037705 (entitled "Backlight Control Apparatus and Method in Video Display Device)

In order to solve such problems, it is an object of the present invention to provide a display device using multi-angle light and dark detection for detecting light and dark information at various angles using a VR camera and outputting a changed display environment based on the detected light / dark information .

According to an aspect of the present invention, there is provided an image processing apparatus including: a peripheral information detecting unit for detecting intensity information in a 360-degree direction around an arbitrary reference point; A signal converter for converting the light / dark information detected by the peripheral information detector into a predetermined communication signal and outputting the signal; A controller for analyzing the light and dark information transmitted through the signal converter and comparing the light and dark information with preset reference information and outputting a preset dimming control signal in accordance with the comparison result; And a backlight whose brightness output is controlled in accordance with a dimming control signal output from the control unit.

In addition, the display apparatus according to the present invention may further include an acoustical output unit whose acoustical output is controlled in accordance with the dimming control signal of the control unit.

Further, the peripheral information detecting unit according to the present invention is a VR camera.

The peripheral information detecting unit and the signal converting unit according to the present invention may be integrated with a display device or may be detachable and external.

Further, the external signal converter according to the present invention is characterized by using any one of a USB communication format, a Bluetooth communication format, and a direct format communication format.

The present invention is advantageous in that a VR camera is used to detect light and dark information at various angles and to output a display environment change based on the detected light / dark information to provide an optimal viewing environment to a viewer.

1 is a block diagram showing a configuration of a display device using multi-angle light and dark detection according to the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display apparatus and a display apparatus.
3 is a view illustrating an operation process of a display device using multi-angle light and dark detection according to the present invention.
4 is a flowchart illustrating an operation process of a display device using multi-angle light and dark detection according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a display device using multi-angle light and dark detection according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a configuration of a display device using multi-angle light and dark detection according to the present invention, and FIG. 2 is a diagram illustrating a configuration of a peripheral information detection unit of a display device using multi-angle light and dark detection according to the present invention.

1 and 2, a display device 100 using multi-angle light and dark detection according to the present invention includes a peripheral information detecting unit 110, a signal converting unit 120, a control unit 130, a backlight 140 And an audio output unit 150, and is preferably a television receiver having an image output unit (not shown) such as an LED for outputting an image signal as an image.

The peripheral information detecting unit 110 detects the lightness and darkness information in the 360 degree direction around the center of the television receiver around the center reference point and detects the lightness and darkness information of the surrounding space installed in the upper center of the television receiver and viewed by the viewer .

The peripheral information detecting unit 110 may be a virtual reality camera, and may detect intensity information at various angles using the VR camera.

That is, a plurality of cameras 111 are arranged at predetermined angular ranges (for example, 45 degrees) around the reference point, and the surrounding light and dark information is measured through the camera 111 arranged.

In the present embodiment, a configuration in which a plurality of cameras 111 are arranged in a 360-degree direction is described as an example. However, the present invention is not limited to this, and at least two cameras provided with a wide-angle lens such as a fisheye lens having a 180- Or the like.

The signal converting unit 120 converts the contrast information detected by the surrounding information detecting unit 110 into a preset communication signal and outputs the communication signal.

The signal converting unit 120 may be integrated with the peripheral information detecting unit 110 or may be configured to be detachable from the television receiver.

That is, the peripheral information detecting unit 110 and the signal converting unit 120 may be integrated with the display device 100 to detect ambient light intensity information, and may be configured as an external device detachably installed on one side of the display device 100 So that the surrounding darkness information can be detected.

When the peripheral information detecting unit 110 and the signal converting unit 120 are configured externally, the signal converting unit 120 converts the signal into a digital signal using a communication format such as a USB communication format, a Bluetooth communication format, ), And preferably uses the USB communication format.

The controller 130 analyzes lightness information transmitted through the signal converter 120 and compares the lightness information with preset reference information and outputs a dimming control signal of the backlight 140 according to the comparison result.

3, the controller 130 calculates the brightness information of the optimal backlight 140 from the surrounding brightness information detected by the surrounding information detector 110 in the viewer space 200, and controls the brightness.

This is done not by controlling the brightness information of the backlight 140 according to the light and dark information detected in any one space but by controlling the brightness of the same viewer space such as the first space 210, the second space 220 and the third space 230 The brightness of the backlight 140 is adjusted by combining the brightness and darkness information detected in the first to third spaces 210, 220, and 230, respectively, in accordance with the presence or absence of the window, And calculates the optimum brightness control information to be controlled, i.e., the dimming control signal value.

Also, the controller 130 outputs a sound control signal for controlling the output size of the sound signal according to the calculated dimming control signal value.

For example, as a result of analyzing the surrounding information, it is possible to provide an optimal brightness and sound environment by allowing the output size of the sound signal to be controlled together with the control of the backlight in the nighttime environment.

The backlight 140 is configured such that a predetermined amount of light is output to an image output unit such as an LED, and a screen in which the output of brightness is controlled according to the dimming control signal output from the control unit 130 is displayed through the image output unit do.

The sound output unit 150 outputs sound such as sound according to the received sound signal when the sound output whose sound output is controlled according to the dimming control signal of the controller 130 is output, .

The operation of the display device using the multi-angle light and dark detection according to the present invention will now be described with reference to FIGS. 1, 3 and 4. FIG.

The peripheral information detecting unit 110 of the display device 100 installed at one side of the viewer space 200 detects the lightness and darkness information in the 360 degree direction (S100).

That is, the first space 210 in the center, and the second and third spaces 220 and 230 on the left and right sides

The peripheral brightness information detected by the peripheral information detection unit 110 is received by the control unit 130, and compared with a predetermined reference value for backlight control, and the backlight control information according to the comparison result is calculated (S110).

That is, in step S110, the controller 130 displays contrast information differently detected depending on the presence or absence of a window, the presence of a lighting device, and the like in the first to third spaces 210, 220, and 230, The stored backlight control value is compared with the stored backlight control value, and the stored backlight control value is calculated according to the comparison result.

The backlight control information calculated in step S120 is output to the backlight 140 through the controller 130 so that the backlight 140 can provide an optimal screen in response to the surrounding brightness information do.

Accordingly, the contrast information is detected at various angles, and the display environment is changed based on the detected contrast information, thereby providing an optimum viewing environment to the viewer.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. It can be understood that

In the course of the description of the embodiments of the present invention, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, , Which may vary depending on the intentions or customs of the user, the operator, and the interpretation of such terms should be based on the contents throughout this specification.

100: display device
110: peripheral information detecting unit
111: camera
120: Signal conversion section
130:
140: Backlight
150:
200: audience space
210: First space
220: Second space
230: Third space

Claims (5)

A peripheral information detecting unit 110 for detecting intensity information in a 360-degree direction around an arbitrary reference point;
A signal converting unit 120 for converting the lightness and darkness information detected by the surrounding information detecting unit 110 into a predetermined communication signal and outputting the signal;
A controller 130 for analyzing the light and dark information transmitted through the signal converter 120 and comparing the light and dark information with preset reference information and outputting a predetermined dimming control signal of the backlight 140 according to the comparison result; And
And a backlight 140 whose brightness output is controlled in accordance with a dimming control signal output from the controller 130,
The peripheral information detecting unit 110 and the signal converting unit 120 may be integrated or detachable,
Wherein the external signal conversion unit (120) uses one of a USB communication format, a Bluetooth communication format, and a direct format communication format.
The method according to claim 1,
Wherein the display device further comprises an acoustical output unit (150) whose acoustical output is controlled according to a dimming control signal of the controller (130).
3. The method of claim 2,
Wherein the peripheral information detecting unit (110) is a VR camera.
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