KR20100043418A - Brightness control apparatus of television having luminary and method thereof - Google Patents
Brightness control apparatus of television having luminary and method thereof Download PDFInfo
- Publication number
- KR20100043418A KR20100043418A KR1020080102447A KR20080102447A KR20100043418A KR 20100043418 A KR20100043418 A KR 20100043418A KR 1020080102447 A KR1020080102447 A KR 1020080102447A KR 20080102447 A KR20080102447 A KR 20080102447A KR 20100043418 A KR20100043418 A KR 20100043418A
- Authority
- KR
- South Korea
- Prior art keywords
- brightness
- screen brightness
- screen
- television
- light emitting
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
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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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
- H04N5/58—Control of contrast or brightness in dependence upon ambient light
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Television Receiver Circuits (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
The present invention relates to a brightness adjusting apparatus for a television having a light emitting unit and a control method thereof, and more particularly, when the channel is changed or when viewing a program, the illuminance of the screen output through the display unit is sharp compared to that of the space in which the television is installed. The present invention relates to a brightness control apparatus for a television and a method of adjusting the brightness of the television when the difference is achieved.
A television typically receives a broadcast signal transmitted from a broadcasting station, outputs a video signal through a screen, and outputs an audio signal through a speaker. As an analog broadcast is recently converted into digital broadcast, digital television takes up most of the time. As digital television is becoming more popular due to the transition to digital broadcasting, viewers are able to select channels while receiving dozens and hundreds of broadcasts through terrestrial, satellite, cable and IP (Internet) broadcasting.
As the number of channels increases, a recently provided television detects a synchronization signal of a received composite video signal and automatically searches for available channel information to form a channel map. According to the stored order at the time of key input, the channel without the broadcast signal is not displayed, and only the broadcast channel stored in the channel memory is displayed on the display unit. The television is provided with various colors, illuminance, brightness, contrast, etc. according to the user's manipulation of the screen provided on the display unit.
On the other hand, viewers who watch television often watch with dark illumination of the space where the television is installed so that they can see the screen of the television better.
The conventional television as described above has a problem in that a glare phenomenon occurs when the screen is changed through a channel change or the illuminance of the screen is suddenly changed in a dark environment.
SUMMARY OF THE INVENTION The present invention has been made to improve the above-mentioned conventional problems. When the channel is changed or when the illuminance of the screen output through the display unit is suddenly changed from a dark background to a bright background while watching a program, the peripheral illumination of the television is changed. It is an object of the present invention to provide a brightness control device and a control method of the television for maintaining a constant brightness.
Brightness adjusting device of a television having a light emitting unit according to an aspect of the present invention includes an illumination sensor for detecting the ambient brightness of the television; Light emitting unit for emitting light; A luminance sensor for detecting screen brightness of an image; And a controller configured to control the illuminance of the light emitting unit according to the screen brightness of the image detected by the luminance sensor if the ambient brightness of the television detected by the illuminance sensor is less than or equal to a predetermined value.
The light emitting unit may include a plurality of LEDs (LEDs) provided at a predetermined interval on the outer frame; And an LED driver for controlling a driving current applied to the LED so that the illumination of the LED is controlled.
The apparatus may further include an illuminance setting unit configured to set a screen brightness reference value so that the light emitting unit is turned on according to the screen brightness of the image.
The controller may compare the screen brightness value of the image provided to the display unit with the screen brightness reference value to turn off the light emitting unit if the screen brightness of the image is greater than or equal to the screen brightness reference value, and the screen brightness of the image may be set to the screen brightness. If it is less than the reference value, the light emitting unit is turned on.
The controller may control the illuminance of the light emitting unit according to the brightness of the video screen so that the peripheral brightness of the television becomes the screen brightness reference value when the video screen brightness is less than the screen brightness reference value.
According to another aspect of the present invention, a method of adjusting a brightness of a television having a light emitting unit includes: detecting ambient brightness of the television; Detecting screen brightness of an image; And controlling the illuminance of the light emitter according to the screen brightness of the image sensed by the luminance sensor if the ambient brightness of the television is less than or equal to a predetermined value.
The method may further include an illuminance setting step of setting a screen brightness reference value so that the light emitter is turned on according to the screen brightness of the image provided to the display unit.
Further, when the screen brightness reference value is set in the illuminance setting step, the screen brightness of the current image is compared with the screen brightness reference value, and when the screen brightness of the current image is equal to or greater than the screen brightness reference value, the light emitting unit is turned off, and the current image The light emitting unit is turned on when the screen brightness is less than the screen brightness reference value.
The illumination of the light emitting unit may be controlled according to the brightness of the current video screen such that the ambient brightness of the television becomes the screen brightness reference value when the screen brightness of the current video is equal to or less than the screen brightness reference value.
According to the brightness control apparatus of a television having a light emitting unit and a brightness adjustment method of a television having a light emitting unit according to the present invention as described above, the channel is changed in a dark environment or the illuminance of the screen output through the display unit while the program is suddenly changed. When the ambient brightness of the television is maintained at a constant brightness by the light emitting unit, there is an effect that can minimize the glare phenomenon.
Specific embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.
Hereinafter, a brightness adjusting apparatus for a television having a light emitting unit and a brightness adjusting method for a television having a light emitting unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is a front view showing the appearance of a television having a light emitting unit according to an embodiment of the present invention, Figure 2 is a block diagram showing the configuration of a brightness control apparatus of a television having a light emitting unit according to an embodiment of the present invention.
1 and 2, the television according to the embodiment of the present invention, the
The
The
The
The
As such, when the ambient brightness of the television is controlled by the
That is, since the
In addition, when the channel change signal is input through the remote controller (not shown) or the key input unit (not shown), the
Meanwhile, the
In addition, the
Meanwhile, the
Next, a method of adjusting brightness of a television having a light emitting unit according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.
3 is a flowchart illustrating a brightness control method of a television having a light emitting unit according to an exemplary embodiment of the present invention.
1 to 3, the brightness control method of a television having a light emitting unit according to the present embodiment detects illuminance around the television through the illuminance sensor 105 (S10) when the illuminance around the television is below a predetermined illuminance. It is determined whether the screen brightness reference value of the
First, if the screen brightness reference value is set in step S11, the screen brightness reference value is compared with the screen brightness of the current image provided to the display 103 (S13). When the screen brightness of the current image provided to the
Meanwhile, when the screen brightness of the current image provided to the
In addition, if the screen brightness reference value is not set in step S11, screen brightness of an image provided to the
After the step S20, according to the screen brightness of the current image provided to the
In addition, as a result of comparing the screen brightness of the current video frame with the screen brightness of the next video frame (S23), the screen brightness of the next video frame has a screen brightness darker than a predetermined luminance value compared to the screen brightness of the current video frame. In operation S25, the luminance of the
The brightness control method of the television as described above darkens the periphery of the television at night, while the screen provided through the
In addition, even when the channel of the television is changed through the operation of the remote controller (not shown) or the key input unit (not shown), the
As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and various modifications and equivalent other embodiments of the present invention may be made by those skilled in the art. I understand that it is possible. Therefore, the true technical protection scope of the present invention will be defined by the claims below.
1 is a front view showing the appearance of a television having a light emitting unit according to an embodiment of the present invention.
2 is a block diagram showing the configuration of a brightness control apparatus of a television having a light emitting unit according to an embodiment of the present invention.
3 is a flowchart illustrating a brightness control method of a television having a light emitting unit according to an exemplary embodiment of the present invention.
♠ Code description for the main part of the drawing ♠
100: brightness control device 101: outer frame
103: display unit 110: image signal processing unit
120: luminance detection unit 130: light emitting unit
131: LED 133: LED drive unit
140: control unit 150: memory unit
160: illuminance setting unit
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080102447A KR20100043418A (en) | 2008-10-20 | 2008-10-20 | Brightness control apparatus of television having luminary and method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080102447A KR20100043418A (en) | 2008-10-20 | 2008-10-20 | Brightness control apparatus of television having luminary and method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20100043418A true KR20100043418A (en) | 2010-04-29 |
Family
ID=42218401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020080102447A KR20100043418A (en) | 2008-10-20 | 2008-10-20 | Brightness control apparatus of television having luminary and method thereof |
Country Status (1)
Country | Link |
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KR (1) | KR20100043418A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180133307A (en) * | 2017-04-19 | 2018-12-14 | 선전 구딕스 테크놀로지 컴퍼니, 리미티드 | light intensity detection method, device and SMART terminal |
US10204593B2 (en) | 2015-04-21 | 2019-02-12 | Samsung Electronics Co., Ltd. | Display apparatus and method for controlling the same |
US11122235B2 (en) | 2014-12-30 | 2021-09-14 | Samsung Electronics Co., Ltd. | Display device and control method therefor |
-
2008
- 2008-10-20 KR KR1020080102447A patent/KR20100043418A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11122235B2 (en) | 2014-12-30 | 2021-09-14 | Samsung Electronics Co., Ltd. | Display device and control method therefor |
US10204593B2 (en) | 2015-04-21 | 2019-02-12 | Samsung Electronics Co., Ltd. | Display apparatus and method for controlling the same |
KR20180133307A (en) * | 2017-04-19 | 2018-12-14 | 선전 구딕스 테크놀로지 컴퍼니, 리미티드 | light intensity detection method, device and SMART terminal |
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